An Intelligent CAD System for Development of Controllers of Active Magnetic Bearings

  • Jang, Seung-Ho (College of Mechanical and Industrial System Engineering, Kyung Hee University) ;
  • Kim, Chang-Woo (School of Electronic and Information Engineering, Kyung Hee University)
  • Published : 2001.08.01

Abstract

The purpose of this study is to establish a CAD (Computer Aided Design) system for research and development(R&D) of a new product. In the R&D process of a new product, the design objects are frequently redesigned based on the experimental results obtained with prototypes. The CAD/CAE systems (which is based on computer simulation of physical phenomena) are effective in reducing the number of useless prototypes of a new product. These kinds of conventional CAD/CAE systems do not provide a function to reflect the experimental results to the redesign process, however. This paper proposes a methodology to establish the CAD system, which possesses the engineering model of a designed object in the model database, and refines the model on the basis of experimental results of prototype. The blackboard inference model has been applied to infer model refinement and redesign counterplan by using insufficient knowledge of R&D process of new products.

Keywords

References

  1. Brown, D. C., 1985, 'Failure Handling in a Design Expert System,' Computer Aided Design, Vol. 17, No. 9, pp. 436-443 https://doi.org/10.1016/0010-4485(85)90291-X
  2. Brown, D. C. and Chandrasekaran B., 1986, 'Knowledge and Control for a Mechanical Design Expert System,' IEEE Computer, Vol. 19, No. 7, pp. 92-101 https://doi.org/10.1109/MC.1986.1663283
  3. Erman, L. D., Hayes-Roth F., Lesser, V. R. and Reddy D. R., 1980, 'The Hearsay-2 Speech-Understanding System: Integrating Knowledge to Resolve Uncertainty,' Computing Surveys, Vol. 12, No.12, pp. 213-221
  4. Matsumura, H.O., Kido, K., Tanaka, Y. M. and Takeda, T. H., 1983, 'Relations between the Design Method for Active Magnetic Bearing and the Obtained Experimental Characteristics,' The Transaction of Institute of the Electrical Engineering of Japan(in Japanese), Vol. 103, No. 6, C, pp. 145-152
  5. Silverman, B. G. and Chang, J. S., 1989, 'Blackboard System Generator(BSG) : An Alternative Distributed Problem-Solving Paradigm,' IEEE Transactions on Systems, Man and Cybernetics, Vol. 19, No. 2, pp. 334-341 https://doi.org/10.1109/21.31037
  6. Ha, T. W. and Lee, A. S., 2000, 'A Rotordynamic Analysis of Circumferentially Grooved Pump Seals Based on a Three-Control-Volume Theory,' KSME Internatiomal Journal, Vol. 14, No. 3, pp. 261-271
  7. Youn I., 2000, 'Optimal Design of Discrete Time Preview Controllers for Semi-Active and Active Suspension Systems,' KSME International Journal, Vol. 14, No. 8, pp. 807-815