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Innovations in fluid power
Book Reviews Modelling and Simulation Sixth Bath International Fluid Power Workshop Burrows C.R., Edge, K.A. (eds.) Research Studies Press Ltd., Taunton 1994 ISBN O-86380-162-5,299 + xii pages The University of Bath Fluid Power Centre regularly hosts the annual series of Bath International Fluid Power Workshops. The workshops concentrate on new developments and special topics in fluid power dynamics. The sixth workshop in 1993 focused on research and development on the topic of modelling and simulation in fluid power. These Proceedings Volume contains 19 sections corresponding to the papers presented at the Workshop. The range of application contributions covers modelling and simulation of/for: electromagnetic characteristics of valves, high speed hydraulic motors, axial piston pumps, triple pumps control, human interaction with underwater breathing equipment, adaptive control of solenoid valve, controlling pneumatic servos, adaptive pressure regulation, control of hydraulic force actuators. Furthermore modelling methods and software tools are presented: SSP - a simulation program for pneumatics, BGSP - Bond graph simulation program knowledge-based programming for dynamic response of hydraulic systems, expert - simulation software package for electro- hydraulic control, fuzzy reasoning for stabilisation of control systems, adaptive control schemes, application of neural networks. The contributions show an interesting mixture between classical modelling and simulation in fluid power applications and the introduction of new methods in this area. Innovations in Fluid Power Seventh Bath Int. Fluid Power Workshop Burrows C.R., Edge, K.A. (eds.) Research Studies Press Ltd., Taunton 1995 ISBN O-86380-170-6,368 + xiv pages This Seventh Bath International Fluid Power Workshop, held in 1994, concentrated on innovations in fluid power. These Proceedings consist of 23 contributed papers focusing on innovations concerning this topic. The editors arrange papers of similar content in eight sections which reflect innovative areas: neural networks, energy saving, simulation, features of controlling, pneumatics, noise, measurement and testing, pumps and transmissions. Although a separate section is devoted to simulation, modelling and simulation can be found also in the other sections. Again this workshop follows an interesting tradition, which gives insight into special aspects of the topics presented: in case of dis-
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cussions subsequent to the presentation of the paper, the contributions to the discussions including the authors’ responses are printed as addendum to the paper. Design and Performance Eighth Bath International Fluid Power Workshop C.R. Burrows, K.A. Edge (eds.) Research Studies Press Ltd., Taunton, 1996 ISSN O-86380-187-0,368 + xiv pages These Proceedings of the Eighth Bath Fluid Power Workshop (held in September 1995 and concentrating on design and performance) contain the 23 contributions to this workshop. The editors have grouped them into six categories. In the first category Control we find three papers presenting control strategies for robots, vibrators and engines. The next category Circuits and Components concentrates mostly on modelling and simulation and also on the improvement of simulation tools. For example, the authors discuss the use of neural networks for modelling fluid power components. In order to be more cost-effective, they replace detailed mathematical models by “data-based” models. The success of this approach is shown in several examples. The papers in the category Pumps cover amongst other topics the generation of pressure pulsation and also noise reduction, an increasingly important matter in order to meet legislation requirements. Three papers are subsumed under Simulation. Two of them show different approaches and modelling techniques. The third presents a software package, DSHplus developed at the RWTH Aachen, Germany. In the fifth category Pneumatics, the papers cover very different topics: from pneumatic positioning systems to pneumatic servo systems. Contamination and Materials, the last category, discusses themes characterised by the request for higher efficiency and reliability. After a paper on wear particle code systems we ‘rind a contribution on the application of new materials for wear reduction, and finally a paper on effective contamination control is presented, involving artificial intelligence techniques. The reader can find in all these Proceedings a large variety of new developments and approaches on a high standard which are mostly illustrated with powerful examples. Consequently, these Proceedings can be recommended not only to specialists in fluid power but also to modelling & simulation people. F. Breitenecker, M. Holzinger, J. Plank, Dept. Simulation Technique, TV Vienna, Email: Felix.Breitenecker @tuwien.ac.at, {mholz,jplank)@argesim. tuwien.ac.at
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19, March 1997
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- Simulation
News Europe
cussions subsequent to the presentation of the paper, the contributions to the discussions including the authors’ responses are printed as addendum to the paper. Design and Performance Eighth Bath International Fluid Power Workshop C.R. Burrows, K.A. Edge (eds.) Research Studies Press Ltd., Taunton, 1996 ISSN O-86380-187-0,368 + xiv pages These Proceedings of the Eighth Bath Fluid Power Workshop (held in September 1995 and concentrating on design and performance) contain the 23 contributions to this workshop. The editors have grouped them into six categories. In the first category Control we find three papers presenting control strategies for robots, vibrators and engines. The next category Circuits and Components concentrates mostly on modelling and simulation and also on the improvement of simulation tools. For example, the authors discuss the use of neural networks for modelling fluid power components. In order to be more cost-effective, they replace detailed mathematical models by “data-based” models. The success of this approach is shown in several examples. The papers in the category Pumps cover amongst other topics the generation of pressure pulsation and also noise reduction, an increasingly important matter in order to meet legislation requirements. Three papers are subsumed under Simulation. Two of them show different approaches and modelling techniques. The third presents a software package, DSHplus developed at the RWTH Aachen, Germany. In the fifth category Pneumatics, the papers cover very different topics: from pneumatic positioning systems to pneumatic servo systems. Contamination and Materials, the last category, discusses themes characterised by the request for higher efficiency and reliability. After a paper on wear particle code systems we ‘rind a contribution on the application of new materials for wear reduction, and finally a paper on effective contamination control is presented, involving artificial intelligence techniques. The reader can find in all these Proceedings a large variety of new developments and approaches on a high standard which are mostly illustrated with powerful examples. Consequently, these Proceedings can be recommended not only to specialists in fluid power but also to modelling & simulation people. F. Breitenecker, M. Holzinger, J. Plank, Dept. Simulation Technique, TV Vienna, Email: Felix.Breitenecker @tuwien.ac.at, {mholz,jplank)@argesim. tuwien.ac.at
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19, March 1997