제어로봇시스템학회:학술대회논문집
- 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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- Pages.161-164
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- 1996
Identification of saturation-type nonlinear feedback control systems
- Yeping, Sun (Faculty of Engineering, Kumamoto University) ;
- Kasiwagi, Hiroshi (Faculty of Engineering, Kumamoto University)
- 발행 : 1996.10.01
초록
The authors have recently proposed a new method for identifying Volterra kernels of nonlinear control systems by use of M-sequence and correlation technique. A specially chosen M-sequence is added to the nonlinear system to be identified, and the crosscorrelation function between the input and output is calculated. Then every crosssection of Volterra kernels up to 3rd order appears at a specified delay time point in the crosscorrelation. This method is applied to a saturation-type nonlinear feedback control system of mechanical-electrical servo system having torque saturation nonlinearity. Simulation experiments show that we can obtain Volterra kernels of saturation-type nonlinear system, and a good agreement is observed between the observed output and the calculated one from the measured Volterra kernels.