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Engineering Information Abstracts (Part I)
Abstract: In this paper, we describe the development and experimentation of a visual tracking system for moving target on two-dimensional plane, using the sequence of images from a CCD camera, mounted on mechanical equipment, its line of sight ŽLOS. has two rotational degrees of freedom Žpitching and yawing.. We develop this system with a personal computer ŽPC. including peripheral component interconnect ŽPCI. bus. The problems of this system are uncertainty of camera parameters, nonlinearity of target motion and mechanical assembly, and also time-varying transformation of perspective projection. A self tuning regulator ŽSTR. adjusts automatically the parameters of the controller for absorbing variation of the system characteristics without identifying the system parameters. Thus, to overcome the problems, STR is applied to visual tracking system so as to enhance the robustness to those. To reduce the processing time of generating the control input, the minimum variance control as the law of STR is adopted, and the controller parameters are directly on-line adjusted by adaptive algorithm. From the experimental results, it is confirmed that the problems are compensated by adaptive law and yields tracking performance even in the face of poor prior knowledge of the circumstance. Two experimental results of real-time tracking during sufficient fast sampling time Ž0.13 wsecx sampling rate. are shown. In English ŽAuthor abstract . EI Order Number: 98034105078 Keywords: Computer vision; Pattern recognition systems; Cameras; Self tuning control systems; Feedback control; Interfaces Žcomputer.; Adaptive algorithms; Personal computers; Charge coupled devices
Title: ANALYSIS OF CLOCK-JITTER ON AN ANALOGTO-DIGITAL CONVERTER USING THE SIGNAL PROCESSING WORKSYSTEM (SPW) ENVIRONMENT Author(s): Williams, Shonda L. Source: Proceedings of the 1997 ASEE Annual Conference Jun 15-18 1997 Milwaukee, WI, USA. ASEE Washington DC USA. 5p ISSN: 0190-1052 CODEN: ACOPDW Publication Year: 1997 Abstract: A sound fundamental understanding of electronic circuits and devices can be used as a basis to formulate an understanding of ADC computer interface devices. However, secondary effects such as offset, drift, clock-jitter, etc. may represent critical characteristics that must be understood and dealt with. The author presents an analysis of an Analog-toDigital Converter ŽADC. simulation that includes the jitter present in real ADC clock-circuitry. The paper exemplifies the in-depth analysis needed to understand some of the secondary nonlinear physical properties of electronic devices as they relate to ADC devices. In English ŽAuthor abstract . EI Order Number: 98034100671 Keywords: Analog to digital conversion; Digital signal processing; User interfaces; Mathematical models; Computer simulation
Title: IMPLEMENTATION OF A LABORATORY LEARNING MODULE FOR PROCESS MONITORING AND CONTROL Author(s): Aldana, Carlos; Erevelles, Winston F. Source: Proceedings of the 1997 ASEE Annual Conference Jun 15-18 1997 Milwaukee, WI, USA. ASEE Washington DC USA. 8p ISSN: 0190-1052 CODEN: ACOPDW Publication Year: 1997 Abstract: This paper describes the development of a laboratory module in automation that presents students with an experience in sensors, data collection and system control. The module features an Allen Bradley Programmable Logic Controller ŽPLC., a pick and place device with two degrees of freedom and two set point control modules mounted on the gripper and the rotary axis of the pick and place device, a chute and escapement for accurate part feeding and sensors for part-size detection, and the detection of the limits of travel of the pick and place device. The system is designed to distinguish between and recirculate steel balls of three different sizes Ž7r32 inches, 1r4 inches, 9r32 inches.. Inputs and outputs of the system were examined and the appropriate ladder logic was developed. This ladder logic acts as the main control for the system, however the PLC features a data highway which was used to interface our pick and place device to a supervisory control and data acquisition ŽSCADA. software and develop a man-machine interface ŽMMI.. During the development of this module, students were exposed to a series of different fields, from the mechanical design of the system, wiring of the set-up, implementation of the ladder logic and development of the man-machine interface. In English ŽAuthor abstract . EI Order Number: 98034100718 Keywords: Engineering education; Mechanical engineering; Laboratories; Automation; SCADA systems; Programmable logic controllers; Grippers; Sensors; Ladder networks; Interfaces Žcomputer.; Computer software; Man machine systems; Process control
Title: DO AND UNDERSTAND APPROACH TO A NETWORKING COURSE Author(s): Molina, Domingo III Source: Proceedings of the 1997 ASEE Annual Conference Jun 15-18 1997 Milwaukee, WI, USA. ASEE Washington DC USA. 6p ISSN: 0190-1052 CODEN: ACOPDW Publication Year: 1997 Abstract: The nuts and bolts of how a senior level computer science networking course is being successfully taught to students without requiring them to have any prior experience in networking, are presented. The networking course requires the students to complete rigorous lab sessions leading to thorough understanding of the seven layers of IOS OSI model. Students are exposed to the practical aspects of networking. After learning how to set-up a network, students learn to install a network operating system, setup user accounts, pro-
Engineering Information Abstracts (Part I) vide access to different software packages, provide security, perform other administrative tasks, and troubleshoot the network at the hardware and software levels. In English EI Order Number: 98034101002 Keywords: Engineering education; Computer science; Computer networks; Interfaces Žcomputer. Title: INDUSTRIAL AUTOMATION USING OLE Author(s): Segee, B. E.; LeBlanc, Kevin S. Source: Proceedings of the 1997 ASEE Annual Conference Jun 15-18 1997 Milwaukee, WI, USA. ASEE Washington DC USA. 5p ISSN: 0190-1052 CODEN: ACOPDW Publication Year: 1997 Abstract: Object-linking and Embedding ŽOLE. is a mechanism that allows two software modules to connect and communicate with each other on the same machine. OLE controls can be easily customized to external hardware and utilized in software. Furthermore, OLE is a great educational tool which modularizes the application at hand, allowing a number of students of differing skill levels to take part in program development. In English Ei Order Number 98034101020 Keywords: Computer aided software engineering; Computer architecture; User interfaces; Data reduction; C Žprogramming language.; Engineering education; Computer aided instruction; Factory automation Title: ’DISTANCE EDUCATION’ SIMULATED ELECTRONICS LABORATORY Author(s): Cooley, Wils L. Source: Proceedings of the 1997 ASEE Annual Conference Jun 15-18 1997 Milwaukee, WI, USA. ASEE Washington DC USA. 6p ISSN: 0190-1052 CODEN: ACOPDW Publication Year: 1997 Abstract: The Department of Electrical and Computer Engineering, state college and university system, West Virginia, has developed a quality electronics laboratory experience for place-bound and equipment-poor students. The Digital Electronics Laboratory meets once a week for a semester. It is designed to accompany a 3-credit lecture course covering p-n diode-based, bipolar junction transistor ŽBJT., and metal oxide semiconductor field effect transistor ŽMOSFET. logic gates implementations, along with registers, counters, converters,
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memory, and microprocessors. Particular attention is paid to the relation between internal device characteristics and terminal behavior of integrated circuits. In English Ei Order Number 98034101141 Keywords: Computer aided instruction; Electronic equipment manufacture; Engineering education; Microprocessor chips; Bipolar transistors; MOSFET devices; Logic gates; Semiconductor diodes; Data storage equipment; Interfaces Žcomputer.; Computer simulation Title: MULTIPURPOSE PROCESS SIMULATOR FOR AUTOMATION ENGINEERING LABORATORY Author(s): Palma, Joao; Lacerda, Luis; Antunes, Jose; Simoes, Filomena Source: Proceedings of the 1997 IEEE International Symposium on Industrial Electronics, ISIE. Part 3 Žof 3. Jul 7-11 1997 v 3 Guimaraes, Portugal. Sponsored by: IEEE Piscataway NJ USA. p 931-935 CODEN: 85PTAR Publication Year: 1997 Abstract: A simple electronic system is described which can be associated with a personal computer ŽPC. and used to simulate a wide class of real processes. The unit consists of an electronic circuit with one 8-bit microcontroller and several discrete and analogue IrO ports and a serial interface for communication with a PC. The IrO ports reproduce the real system interface, while the PC runs the chosen simulation program and shows the pseudo-system’s behaviour in a graphical environment. This simulator is a low cost, compact and versatile solution developed for training on PLC programming and testing. A great number of different simulated processes can be created on the PC by using a high level language Že.g. C or Pascal.. Two examples of such simulated systems are shown: a simple one using basically discrete IrO and another one devoted to analogue closed loop control with the PID functions. In English ŽAuthor abstract . 7 Refs. Ei Order Number 98034101936 Keywords: Digital control systems; Research laboratories; Computer simulation; Real time systems; Computer terminals; Computer graphics; Programmable logic controllers; High level languages; Three term control systems; Closed loop control systems; Data communication systems; Interfaces Žcomputer.