- Email: [email protected]
Watch on the rhine
Automatica, Vol. 5, pp. 417-419. Pergamon Press, 1969. Printed in Great Britain.
Watch on the Rhine* The IFAC Symposium on Multivariable Control Systems, Diisseldorf, Germany, 7-8 October 1968 P. C. PARKS, Associate Editor Although Eastern Europe was quite well represented, it turned out that in some cases the necessary entry visas, exit visas and passports had been received by participants only one or two days before the meeting. The Organising Committee deserves high praise for the smooth running of the meeting, including first class simultaneous translations in English, French and German. The Committee had also distributed the preprints commendably early. The informal evening discussions in various restaurants in the city were much enjoyed by the delegates. The 111 papers received were divided into twelve sections. The theory headings included linear (21 papers), non-linear (10), discrete and relay (8) and optimal (continuous and discrete, 9 + 6) systems as well as computer procedures for optimisation (5) and filter theory (9). Applications sections were formed as the process industries (12 papers), power plants (17), computer procedures (3), aerospace (4) and miscellaneous (7). In the linear theory section there was emphasis on canonical forms (Gauvrit, Gueguen, Fossard, Menahem, Singer, Frost) using work of Kalman, Luenberger and Rosenbrock. Liapunov methods for stability analysis were featured strongly in the non-linear papers, including Liapunov functionals for systems with time delays (Kitamura, Hirai, Nishimura) and a Popov-type theorem for nonlinear functions of several state variables (Partovi and Nahi). The Tsypkin method for predicting self or forced oscillations was extended to multivariable relay systems in a paper from Canada (Nugent and Kavanagh). Optimal control of distributed parameter systems is a growing topic and was represented by one of the Japanese papers (Shimemura): another important topic, Kalman filtering, was considered by several authors (Jaswinski; Wishner, Tabaezynski, Athans; Bona). A very wide range of applications was reported, including some unusual ones such as control of flue gases (Kruidering), naptha reforming (Sk~tkala), granulated urea production (~utek, Kneppo), reactor neutron flux (Suda, Okamoto) and oscillators in p.e.m, telephone systems (Parks, Miller).
A SYMPOSIUM on multivariable control systems, sponsored by the IFAC Technical Committees on Theory and Applications and organised by the VDI/VDE--Fachgruppe Regelungstechnik of the Verein Deutscher Ingenieure and the Verband Deutsche Elektrotechniker, was held in the Robert Schumann hall of the Ehrenhof exhibition buildings in Diisseldorf on October 7th and 8th, 1968.One hundred and eleven papers were submitted and there were some 420 delegates from 24 countries at the meeting. The meeting was run in a new experimental way. The papers were not formally presented by the authors, but the session vice-chairman took some 5 or 10 rain to introduce all the papers in that session, pointing out any common or special features. The remaining hour or more was spent in discussions which had been submitted first in writing to the chairman. Some ten papers were considered in each session. Although the preprints and discussion forms had been sent out well in advance of the meeting it appeared that many people had not done their homework so that few discussions had been prepared well in advance. Most of the discussions were at short notice from the floor, and were often merely requests to clarify points in the written paper. On the second day the chairmen were short of questions and let the authors present their papers briefly. This seemed to be more satisfactory, but was impossible in the earlier sessions on account of the large number of papers in the meeting. It turned out that the Organising Committee had accepted all the papers submitted--this surely was a mistake. A number of papers could be rejected immediately as not strictly meeting the IFAC multivariable systems definition printed on the call for papers. This read as follows: "Systems with more than one controlled variable and more than one manipulated variable, when at least one manipulated variable influences more than one controlled variable." A number of authors failed to appear at the meeting--no Russian author was present, and a number of American authors were absent too. * Received 18 November 1968. 417
418
W a t c h o n the R h i n e
S e l e c t e d p a p e r s will a p p e a r in A u l o m a t i c a , s o m e a r e in this issue, a n d t h e p r e p r i n t s are a v a i l a b l e . * The
Proceedings, including the
being
produced
by
the
discussions, are
VDI/VDE
Fachgruppe
Regelungstechnik, Dtisseldorf.t PART 1 (TOME 1)
I. General theory--Linear systems M. H. GAUVRII, C. GUEGUENand A. FOSSARO: Effective
construction of" irreducible realizations. C. GUEGUEN, A. FOSSARD and M. GAUVRIT: An inter-
mediate representation for multivariable systems. V. K. JA1N and R. D. GUPTA: Grammian approach to mode extraction: exact identification of linear systems. W. KRAEMER: Systematic btvestigations of uncompensated linear two-variable control systems, A. I. KUKHTENKO and V. V. UDILOV: A groups them3' application while designing symmetrical dynamic systems. A. G. J. MACFARLANE: Mappings of the state space into the complex plane. M. MENAHEIVI: Notes on the theory of multivariable ~ystems--the Jactorization of polynomial matrices. I. MINCHEV: Synthesis of non-interacting multivariable systems for automatic control and subnon-blteracting duties with a change of the plant parameters (Russian). V. MOROZOVSKY: On decomposition of multicoupled automatic control systems Of the same class' (English and Russian). W. MUCKLI: Dynamic behavior and controller setting of
non-autonomized dual control systems. A. PHAOOUAP~: Tetransfer control functions. G. ROSENAU: Higher root loci for multivariable systems. F. SCHNEIDER; Autonomization of multivariable control systems. D. SHEN and S. CmNc;: Pm'tial ordering in linear multivariable control systems. R. SINGERand P. FROST: New canonical forms of general multivariable linear systems with application to esthnation and control. O. S. SOBOLEV: Applied methods of multivariable control system study. J. SPONER: On designing multivariable controls' by means o[ the Bode diagram technique. R. STARKERMANNand E. VOGL-FERNHEIM: lm,estigations on the stability o[' control loop chains. A. STRASZAK: Structure transJbrmatkms.for large-scale multivariable control systems. 2. General theor.v--Non-hnear systems L. M. BOICHUK: Method of structure synthesis" of nonlinear multivariable control systems on given transients. F. J. EVANS and J. O. FLOWER: The physical basis" of multivariable system anal.vsis. A. FOSSARD, M. GAUVRIT and C. GUEGUF.N: The influence of structure and representation on the determination of limit cycles of non-linear multivariable systems. S. KITAMURA,K. HIRAI and M. NISHIMURA" Stability of non-linear multivariable control systems with time lags by Liapunov's direct method. V. KUNTSEVICH: The analysis of stability of multivariable control systems with pulse frequency modulation by the Liapunov direct method. M. PANET, F. LAURENT and C. MAIZI~RES: On the stability and the unicity of the response of non-linear multivariable systems--application to electrical networks. S. PARTOVIand N. E. NAHI : Absolute stability of dynamic systems containing non-linear functions of several state variables. * Full length papers included in The Preprint Volumes, Part I, Part II, and a supplementary volume are listed below to indicate the scope of the symposium. t For sale at DM 120 ($30.0), mailing costs included from VDI-Verlag GmbH, Postfach 1139, D-4000 Diisseldorf, Germany.
K. H. SCHEEL: The representation of non-hnear contiumm~ multivariable systems. N. VISWANADHAMand B. L. DEEKSHATULU: I"orced atut free oscillations in non-linear nmltivariable sampled data 3ystems. V. VURCFELD: Multivariable general-order non-linear control and development of i t s control algorithm. 3. General theory
Discrete and relay ,Wstams and various
subjects. E. F. ANTIPOFF and D. A. BRASEAVSKY: Designing of adaptive systems with majority voting elements (English and Russian). E. BIONDI, L. DIViET/and R. SCHMID: Structural analysis
and synthesis o['multivariable linear sampled-data systems. J. K-C. CHUNG and D. P. ATHERTON: Analytical design of multivariable relay control systems for non-hTteraction in the mean. M. D. MESAROV16, O. MACKO and Y. TAKA:~ARA:
Structuring of multilevel systems. R. MOHLERand R. RINK : Mldtivariable bilineor system control. S T. NUGENT and R. J. KAVANAGH: Sell" and forced oscillations in multivariable relay control systems. M. ~ALAMON: A synthesis of multivariab[e time-optimal discrete control s),stems. J. I. SOUMAN and A. K. KEVORKIAN: Stabi#o, and sensitivity analysis of nndtivariable sampled-data s),~tems with time delays. 4. Optimization theotT Continuous' systems R. BROCKHAUS" m method for the stepw&e design of
linear multivariable control systems. E. HOFER: Optimal systems coupled by parameters. K. ICHIKAWA and K. TAMURA: Opthnization problem ~tith bounded state variable. O. KOLBE and P. SAGIROW: The optimization of linear multivariable systems with parameters. A. MAHALANABISand H. KANG: Synthesis of non-linear multivariable control systems. M. V. MEEROV: Some featm'es of multivariable control systems and techniques fi~r their optimisation (Russian). H. SEBESTA: On control of multivariable processes with thne lags and constraints. W. SEtFERT: Synthesis (~f two-variable systems. E. SHIMEMURA: Optimal problem in system with timedelay. 5. Optimization theory--Discrete systems J. ACKERMANN: Minhnum-time multivariable sampled-
data control systems. J. BANAS and A. VACROOX: Discrete opthnal control of
multivariable systems with transport lags. G. GUARDABASSI and S. RINALDI: Optimization 0[ discrete ©,stems with pure time delays. G. LUDYK: Time-optimal multiple input sampled data systems with bounded inputs. P. MOLLER: Equations for switching times of thneoptimal control for time-htvariant linear dynamical systems. H. R. WEISCHEDEL: Min#num ¢~ffbrt controls fi~r discrete multivariable systems. 6. Optimization theory--Computer procedures belonging to
optimization D. GRAUPE: A learning procedure for optimizing non-
linear multivariable processes. I. HARTMANN" A sub-time-optimal procedure for linear time-invariant discrete systems on multivariable constraint inputs. A. I. KUKHTENKOand V. L. VOLKOVICH" A compromise control in the hierarchical structure controlled members. LE LETTY: Two methods of computation of time-optimal control of multivariable linear ,systems and application to a concrete system. P. LORIQUET: Quadratic optimization of a discrete linear system.
Watch on the Rhine PART II (TOME 2)
7. Signal and filter theory J. A. CHANG; Identification of multivariable control systems using ternary pseudo random sequences. K. DUNIFACE and J. MARTIN: Optimization of multidimensional control systems having cross-correlated signals. N. HAYASHI: Notes on a method of correlation analysis for multivariate systems. A. JAZWlNSKI: Adaptive filtering. LOH, PATRICK and CRoss: Feedback signal design by optimum control and dynamic programming technique. M. V. MEEROVand R. T. YANUSHnVSKI: Some problems of synthesis of multivariable control systems (English and Russian). Y. 1. PARAEV: On optimal control of stochastic systems
with unknown characteristics of noises. I. H. ROWE: A statistical model for the identification of multivariable stochastic systems. R. P. WISHNER, J. A. TABACZYNSKI and M. ATHANS:
On the estimation of the state of noisy non-linear multivariable systems. 8. Applications--Process industries M. FJELD, J. KJORSTAD and T. STEPHANSEN: Optimal control of multivariable periodic processes. B. FRANKOVIC: Practical application of the maximum principle in time-optimal control. H. S. HUANG and W. J. YANG: Minimum time control of heat exchangers having internal heat sources. K. KAFFKAand G. BtR6: Control engineering investigation of the new three-body double effect evaporator of the "Machine Factory Lang". L. B. KovAcs and M. K/)TI~L: Indefinite quadratic programming by gradient projection method and its application to optimal control of a chemical plant. B.-C. KRUIDERING: Radiant-cellpressure-control systems for the central flue gas system at Pernis refinery. O. LEGAT" Some methods for the control of multivarible batch-processes and theh" application in oxygen-furnaceshops. M. J. SHAH and A. J. WEISENFELDER: Control and optimization of a large ammonia plant with a digital computer. O. S1NGER and T. KOLTAI: On a new method of investigating large technological systems. J. SK~tKALA; Mathematical description and optimal control philosophy of naptha reforming process. O. SOLHEIM and A. SAETHRE" Optimal control o f continuous and discrete multivariable systems by feedforward and feedback. L. ~UTEK and 1. KNEPPO: Model and control of the process of producing granulated urea. 9. Applications--Power plants
419
W. LATZEL: Aspects on the behaviour of frequencypower-control of steam turbines. A. REINHARDT and G. PREUSCHE: Control of a single cycle bwr. ST. SCHUY, R. GENSER and P. WACH: Superimposed voltage reactive power control in interconnected power systems. R. STARKERMANN: Graphical verification of the autonomising inversion matrix of the controlled process of u triple control system for the case of a turbo-set. N. SUDA and H. OKAMOTO: Optimal control of neutron flux distribution in nuclear reactors. H. UNBEHAUEN" The load dependence of the stability and optimal controlled settings of the multivariable steam temperature control system in a boiler. L. VARCOP; On the feedwater supply and fuel flow control in once-through boilers. 1. ZAPRIANOV: Structural synthesis of an invariant multivariable system for multimachine power station automatic control with high static accuracy (Russian). 10. General and special computer procedures F. HOCK: Multivariable and feedforward control by
means of self adapting models. F.-L. N-NAGY and O. BAR: Application of operational array techniques for analysis of multivariable control systems by digital computer. H. OHNO; An analyzing method of linear multivariable control system using digital computer. II. Applications--Aerospace B. E. BONA; Applications of" observers and optimum
filters to inertial systems. H. K6NIG: Problems in multivariable flight control systems for hypersonic flight vehicles. H. SCHUMACHERand G. SCHWEIZER: The application of perturbation theory in the investigation of multivariable control systems. R. CHEN and D. SHEN: Computer-aided design of multivariable control systems with applications to VTOL aircraft stab;lity augmentat.on. 12. Appfications-- Various technical fields R. BAKKE" Maintaining operational continuity in multi-
variable industrial process computer control installations. J. D. GIFFORD and J. R. LEIGH" The design of a control
system for a medium-width hot strip mill. J. KORN and C. R. WEBB; Interactions in an electrohydraulic transmission. P. C. PARKS and M. R. MILLER: Stability and performance studies of P.C.M. network synchronisation systems. H. W. SMITH: Dynamic control of a two-stand cold mill. O. STROLL; Practical synthesis of multivariable control systems illustrated by a reversing mill. 1. TIROSHI and J. BEN URI : Digital speed-ratio control of electrical motors.
A. ALESSANDRINI, P. GIORDANO and G. PETERLONGO:
Preliminary design of the integrated control system for a direct cycle nuclear power plant. M. BARZACCm,P. GIORDANOand G. SANTESE: Synthesis of a non-interacting control system for a nuclear power plant. V. BERLEMONT, J. DEBELLE; Some aspects of the automatic control of the start up o f a drum boiler. E. J. DAVlSONand R. W. GOLDBERG: Optimum variable measurement in multivariable control systems. M. A. R. GHONAIMY and M. A. HASSAN: Optimum controllers for multivariable systems with changing parameters and application to nuclear reactors. P. GODIN and G. DAvotJsr: Identification of multivariable linear systems from input-output data R. ISERMANN; The steam temperature control of the multivarible system "steam boiler". K. D. KOFER: Investigations into the dynamics o f a nuclear plant with closed-cycle gas turbine and hightemperature reactor.
PART Ill (SUPPLEMENT)
1. General theory--Linear systems I. MINCHEV: Synthesis of non-interacting multivariable systems for automatic control and sub non-interacting duties with a change of the plant parameters (English) (Russian, see Tome 1). H. PRALLE; On structural properties and stability of
linear time-invariant multivariable systems. H. WEINGARTEN; Simplification of synthesis by system
representation in canonical form. 9. Applications--Power plants E. WELFONDER: Analysis of the disturbance-signals at an industrial multivariable control system. I. ZAPRIANOV: Structural synthesls of an invariant multivariable system for multimachine power station automatic control with high static accuracy (English) (Russian, see Tome 2).
Watch on the Rhine* The IFAC Symposium on Multivariable Control Systems, Diisseldorf, Germany, 7-8 October 1968 P. C. PARKS, Associate Editor Although Eastern Europe was quite well represented, it turned out that in some cases the necessary entry visas, exit visas and passports had been received by participants only one or two days before the meeting. The Organising Committee deserves high praise for the smooth running of the meeting, including first class simultaneous translations in English, French and German. The Committee had also distributed the preprints commendably early. The informal evening discussions in various restaurants in the city were much enjoyed by the delegates. The 111 papers received were divided into twelve sections. The theory headings included linear (21 papers), non-linear (10), discrete and relay (8) and optimal (continuous and discrete, 9 + 6) systems as well as computer procedures for optimisation (5) and filter theory (9). Applications sections were formed as the process industries (12 papers), power plants (17), computer procedures (3), aerospace (4) and miscellaneous (7). In the linear theory section there was emphasis on canonical forms (Gauvrit, Gueguen, Fossard, Menahem, Singer, Frost) using work of Kalman, Luenberger and Rosenbrock. Liapunov methods for stability analysis were featured strongly in the non-linear papers, including Liapunov functionals for systems with time delays (Kitamura, Hirai, Nishimura) and a Popov-type theorem for nonlinear functions of several state variables (Partovi and Nahi). The Tsypkin method for predicting self or forced oscillations was extended to multivariable relay systems in a paper from Canada (Nugent and Kavanagh). Optimal control of distributed parameter systems is a growing topic and was represented by one of the Japanese papers (Shimemura): another important topic, Kalman filtering, was considered by several authors (Jaswinski; Wishner, Tabaezynski, Athans; Bona). A very wide range of applications was reported, including some unusual ones such as control of flue gases (Kruidering), naptha reforming (Sk~tkala), granulated urea production (~utek, Kneppo), reactor neutron flux (Suda, Okamoto) and oscillators in p.e.m, telephone systems (Parks, Miller).
A SYMPOSIUM on multivariable control systems, sponsored by the IFAC Technical Committees on Theory and Applications and organised by the VDI/VDE--Fachgruppe Regelungstechnik of the Verein Deutscher Ingenieure and the Verband Deutsche Elektrotechniker, was held in the Robert Schumann hall of the Ehrenhof exhibition buildings in Diisseldorf on October 7th and 8th, 1968.One hundred and eleven papers were submitted and there were some 420 delegates from 24 countries at the meeting. The meeting was run in a new experimental way. The papers were not formally presented by the authors, but the session vice-chairman took some 5 or 10 rain to introduce all the papers in that session, pointing out any common or special features. The remaining hour or more was spent in discussions which had been submitted first in writing to the chairman. Some ten papers were considered in each session. Although the preprints and discussion forms had been sent out well in advance of the meeting it appeared that many people had not done their homework so that few discussions had been prepared well in advance. Most of the discussions were at short notice from the floor, and were often merely requests to clarify points in the written paper. On the second day the chairmen were short of questions and let the authors present their papers briefly. This seemed to be more satisfactory, but was impossible in the earlier sessions on account of the large number of papers in the meeting. It turned out that the Organising Committee had accepted all the papers submitted--this surely was a mistake. A number of papers could be rejected immediately as not strictly meeting the IFAC multivariable systems definition printed on the call for papers. This read as follows: "Systems with more than one controlled variable and more than one manipulated variable, when at least one manipulated variable influences more than one controlled variable." A number of authors failed to appear at the meeting--no Russian author was present, and a number of American authors were absent too. * Received 18 November 1968. 417
418
W a t c h o n the R h i n e
S e l e c t e d p a p e r s will a p p e a r in A u l o m a t i c a , s o m e a r e in this issue, a n d t h e p r e p r i n t s are a v a i l a b l e . * The
Proceedings, including the
being
produced
by
the
discussions, are
VDI/VDE
Fachgruppe
Regelungstechnik, Dtisseldorf.t PART 1 (TOME 1)
I. General theory--Linear systems M. H. GAUVRII, C. GUEGUENand A. FOSSARO: Effective
construction of" irreducible realizations. C. GUEGUEN, A. FOSSARD and M. GAUVRIT: An inter-
mediate representation for multivariable systems. V. K. JA1N and R. D. GUPTA: Grammian approach to mode extraction: exact identification of linear systems. W. KRAEMER: Systematic btvestigations of uncompensated linear two-variable control systems, A. I. KUKHTENKO and V. V. UDILOV: A groups them3' application while designing symmetrical dynamic systems. A. G. J. MACFARLANE: Mappings of the state space into the complex plane. M. MENAHEIVI: Notes on the theory of multivariable ~ystems--the Jactorization of polynomial matrices. I. MINCHEV: Synthesis of non-interacting multivariable systems for automatic control and subnon-blteracting duties with a change of the plant parameters (Russian). V. MOROZOVSKY: On decomposition of multicoupled automatic control systems Of the same class' (English and Russian). W. MUCKLI: Dynamic behavior and controller setting of
non-autonomized dual control systems. A. PHAOOUAP~: Tetransfer control functions. G. ROSENAU: Higher root loci for multivariable systems. F. SCHNEIDER; Autonomization of multivariable control systems. D. SHEN and S. CmNc;: Pm'tial ordering in linear multivariable control systems. R. SINGERand P. FROST: New canonical forms of general multivariable linear systems with application to esthnation and control. O. S. SOBOLEV: Applied methods of multivariable control system study. J. SPONER: On designing multivariable controls' by means o[ the Bode diagram technique. R. STARKERMANNand E. VOGL-FERNHEIM: lm,estigations on the stability o[' control loop chains. A. STRASZAK: Structure transJbrmatkms.for large-scale multivariable control systems. 2. General theor.v--Non-hnear systems L. M. BOICHUK: Method of structure synthesis" of nonlinear multivariable control systems on given transients. F. J. EVANS and J. O. FLOWER: The physical basis" of multivariable system anal.vsis. A. FOSSARD, M. GAUVRIT and C. GUEGUF.N: The influence of structure and representation on the determination of limit cycles of non-linear multivariable systems. S. KITAMURA,K. HIRAI and M. NISHIMURA" Stability of non-linear multivariable control systems with time lags by Liapunov's direct method. V. KUNTSEVICH: The analysis of stability of multivariable control systems with pulse frequency modulation by the Liapunov direct method. M. PANET, F. LAURENT and C. MAIZI~RES: On the stability and the unicity of the response of non-linear multivariable systems--application to electrical networks. S. PARTOVIand N. E. NAHI : Absolute stability of dynamic systems containing non-linear functions of several state variables. * Full length papers included in The Preprint Volumes, Part I, Part II, and a supplementary volume are listed below to indicate the scope of the symposium. t For sale at DM 120 ($30.0), mailing costs included from VDI-Verlag GmbH, Postfach 1139, D-4000 Diisseldorf, Germany.
K. H. SCHEEL: The representation of non-hnear contiumm~ multivariable systems. N. VISWANADHAMand B. L. DEEKSHATULU: I"orced atut free oscillations in non-linear nmltivariable sampled data 3ystems. V. VURCFELD: Multivariable general-order non-linear control and development of i t s control algorithm. 3. General theory
Discrete and relay ,Wstams and various
subjects. E. F. ANTIPOFF and D. A. BRASEAVSKY: Designing of adaptive systems with majority voting elements (English and Russian). E. BIONDI, L. DIViET/and R. SCHMID: Structural analysis
and synthesis o['multivariable linear sampled-data systems. J. K-C. CHUNG and D. P. ATHERTON: Analytical design of multivariable relay control systems for non-hTteraction in the mean. M. D. MESAROV16, O. MACKO and Y. TAKA:~ARA:
Structuring of multilevel systems. R. MOHLERand R. RINK : Mldtivariable bilineor system control. S T. NUGENT and R. J. KAVANAGH: Sell" and forced oscillations in multivariable relay control systems. M. ~ALAMON: A synthesis of multivariab[e time-optimal discrete control s),stems. J. I. SOUMAN and A. K. KEVORKIAN: Stabi#o, and sensitivity analysis of nndtivariable sampled-data s),~tems with time delays. 4. Optimization theotT Continuous' systems R. BROCKHAUS" m method for the stepw&e design of
linear multivariable control systems. E. HOFER: Optimal systems coupled by parameters. K. ICHIKAWA and K. TAMURA: Opthnization problem ~tith bounded state variable. O. KOLBE and P. SAGIROW: The optimization of linear multivariable systems with parameters. A. MAHALANABISand H. KANG: Synthesis of non-linear multivariable control systems. M. V. MEEROV: Some featm'es of multivariable control systems and techniques fi~r their optimisation (Russian). H. SEBESTA: On control of multivariable processes with thne lags and constraints. W. SEtFERT: Synthesis (~f two-variable systems. E. SHIMEMURA: Optimal problem in system with timedelay. 5. Optimization theory--Discrete systems J. ACKERMANN: Minhnum-time multivariable sampled-
data control systems. J. BANAS and A. VACROOX: Discrete opthnal control of
multivariable systems with transport lags. G. GUARDABASSI and S. RINALDI: Optimization 0[ discrete ©,stems with pure time delays. G. LUDYK: Time-optimal multiple input sampled data systems with bounded inputs. P. MOLLER: Equations for switching times of thneoptimal control for time-htvariant linear dynamical systems. H. R. WEISCHEDEL: Min#num ¢~ffbrt controls fi~r discrete multivariable systems. 6. Optimization theory--Computer procedures belonging to
optimization D. GRAUPE: A learning procedure for optimizing non-
linear multivariable processes. I. HARTMANN" A sub-time-optimal procedure for linear time-invariant discrete systems on multivariable constraint inputs. A. I. KUKHTENKOand V. L. VOLKOVICH" A compromise control in the hierarchical structure controlled members. LE LETTY: Two methods of computation of time-optimal control of multivariable linear ,systems and application to a concrete system. P. LORIQUET: Quadratic optimization of a discrete linear system.
Watch on the Rhine PART II (TOME 2)
7. Signal and filter theory J. A. CHANG; Identification of multivariable control systems using ternary pseudo random sequences. K. DUNIFACE and J. MARTIN: Optimization of multidimensional control systems having cross-correlated signals. N. HAYASHI: Notes on a method of correlation analysis for multivariate systems. A. JAZWlNSKI: Adaptive filtering. LOH, PATRICK and CRoss: Feedback signal design by optimum control and dynamic programming technique. M. V. MEEROVand R. T. YANUSHnVSKI: Some problems of synthesis of multivariable control systems (English and Russian). Y. 1. PARAEV: On optimal control of stochastic systems
with unknown characteristics of noises. I. H. ROWE: A statistical model for the identification of multivariable stochastic systems. R. P. WISHNER, J. A. TABACZYNSKI and M. ATHANS:
On the estimation of the state of noisy non-linear multivariable systems. 8. Applications--Process industries M. FJELD, J. KJORSTAD and T. STEPHANSEN: Optimal control of multivariable periodic processes. B. FRANKOVIC: Practical application of the maximum principle in time-optimal control. H. S. HUANG and W. J. YANG: Minimum time control of heat exchangers having internal heat sources. K. KAFFKAand G. BtR6: Control engineering investigation of the new three-body double effect evaporator of the "Machine Factory Lang". L. B. KovAcs and M. K/)TI~L: Indefinite quadratic programming by gradient projection method and its application to optimal control of a chemical plant. B.-C. KRUIDERING: Radiant-cellpressure-control systems for the central flue gas system at Pernis refinery. O. LEGAT" Some methods for the control of multivarible batch-processes and theh" application in oxygen-furnaceshops. M. J. SHAH and A. J. WEISENFELDER: Control and optimization of a large ammonia plant with a digital computer. O. S1NGER and T. KOLTAI: On a new method of investigating large technological systems. J. SK~tKALA; Mathematical description and optimal control philosophy of naptha reforming process. O. SOLHEIM and A. SAETHRE" Optimal control o f continuous and discrete multivariable systems by feedforward and feedback. L. ~UTEK and 1. KNEPPO: Model and control of the process of producing granulated urea. 9. Applications--Power plants
419
W. LATZEL: Aspects on the behaviour of frequencypower-control of steam turbines. A. REINHARDT and G. PREUSCHE: Control of a single cycle bwr. ST. SCHUY, R. GENSER and P. WACH: Superimposed voltage reactive power control in interconnected power systems. R. STARKERMANN: Graphical verification of the autonomising inversion matrix of the controlled process of u triple control system for the case of a turbo-set. N. SUDA and H. OKAMOTO: Optimal control of neutron flux distribution in nuclear reactors. H. UNBEHAUEN" The load dependence of the stability and optimal controlled settings of the multivariable steam temperature control system in a boiler. L. VARCOP; On the feedwater supply and fuel flow control in once-through boilers. 1. ZAPRIANOV: Structural synthesis of an invariant multivariable system for multimachine power station automatic control with high static accuracy (Russian). 10. General and special computer procedures F. HOCK: Multivariable and feedforward control by
means of self adapting models. F.-L. N-NAGY and O. BAR: Application of operational array techniques for analysis of multivariable control systems by digital computer. H. OHNO; An analyzing method of linear multivariable control system using digital computer. II. Applications--Aerospace B. E. BONA; Applications of" observers and optimum
filters to inertial systems. H. K6NIG: Problems in multivariable flight control systems for hypersonic flight vehicles. H. SCHUMACHERand G. SCHWEIZER: The application of perturbation theory in the investigation of multivariable control systems. R. CHEN and D. SHEN: Computer-aided design of multivariable control systems with applications to VTOL aircraft stab;lity augmentat.on. 12. Appfications-- Various technical fields R. BAKKE" Maintaining operational continuity in multi-
variable industrial process computer control installations. J. D. GIFFORD and J. R. LEIGH" The design of a control
system for a medium-width hot strip mill. J. KORN and C. R. WEBB; Interactions in an electrohydraulic transmission. P. C. PARKS and M. R. MILLER: Stability and performance studies of P.C.M. network synchronisation systems. H. W. SMITH: Dynamic control of a two-stand cold mill. O. STROLL; Practical synthesis of multivariable control systems illustrated by a reversing mill. 1. TIROSHI and J. BEN URI : Digital speed-ratio control of electrical motors.
A. ALESSANDRINI, P. GIORDANO and G. PETERLONGO:
Preliminary design of the integrated control system for a direct cycle nuclear power plant. M. BARZACCm,P. GIORDANOand G. SANTESE: Synthesis of a non-interacting control system for a nuclear power plant. V. BERLEMONT, J. DEBELLE; Some aspects of the automatic control of the start up o f a drum boiler. E. J. DAVlSONand R. W. GOLDBERG: Optimum variable measurement in multivariable control systems. M. A. R. GHONAIMY and M. A. HASSAN: Optimum controllers for multivariable systems with changing parameters and application to nuclear reactors. P. GODIN and G. DAvotJsr: Identification of multivariable linear systems from input-output data R. ISERMANN; The steam temperature control of the multivarible system "steam boiler". K. D. KOFER: Investigations into the dynamics o f a nuclear plant with closed-cycle gas turbine and hightemperature reactor.
PART Ill (SUPPLEMENT)
1. General theory--Linear systems I. MINCHEV: Synthesis of non-interacting multivariable systems for automatic control and sub non-interacting duties with a change of the plant parameters (English) (Russian, see Tome 1). H. PRALLE; On structural properties and stability of
linear time-invariant multivariable systems. H. WEINGARTEN; Simplification of synthesis by system
representation in canonical form. 9. Applications--Power plants E. WELFONDER: Analysis of the disturbance-signals at an industrial multivariable control system. I. ZAPRIANOV: Structural synthesls of an invariant multivariable system for multimachine power station automatic control with high static accuracy (English) (Russian, see Tome 2).