제어로봇시스템학회:학술대회논문집
- 제어로봇시스템학회 1993년도 한국자동제어학술회의논문집(국제학술편); Seoul National University, Seoul; 20-22 Oct. 1993
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- Pages.1-6
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- 1993
Identification of continuous time-delay systems using the genetic algorithm
- Hachino, Tomohiro (Department of Electrical Engineering, Kyushu Institutej of Technology) ;
- Yang, Zi-Jiang (Department of Electrical Engineering, Kyushu Institutej of Technology) ;
- Tsuji, Teruo (Department of Electrical Engineering, Kyushu Institutej of Technology)
- 발행 : 1993.10.01
초록
This report proposes a novel method of identification of continuous time-delay systems from sampled input-output data. By the aid of a digital pre-filter, an approximated discrete-time estimation model is first derived, in which the system parameters remain in their original form and the time delay need not be an integral multiple of th sampling period. Then an identification method combining the common linear least squares(LS) method or the instrumental variable(IV) method with the genetic algorithm(GA) is proposed. That is, the time-delay is selected by the GA, and the system parameters are estimated by the LS or IV method. Furthermore, the proposed method is extended to the case of multi-input multi-output systems where the time-delays in the individual input channels may differ each other. Simulation resutls show that our method yields consistent estimates even in the presence of high measurement noises.
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