Repetitive Control for Systems with Time-Delays and Application to Robotic Servo Motor
In many industrial robotic applications there is a need to track periodic reference signals and/or reject periodic disturbances. This paper presents a novel repetitive control design for systems with constant time-delays in both forward and feedback control channels. An additional delay is introduced together with plant delays to construct an internal model for periodic signals, and a simple proportional control is utilized to stabilize the closed-loop system. Sufficient stability conditions of the closed-loop system and the robustness analysis under modeling uncertainties are studied. Experimental results are included to evaluate the validity and effectiveness of the proposed method.
KeywordsTime-delay systems repetitive control periodic signals
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- 13.Watanabe, K., Yamada, K.: Repetitive control of time-delay systems. In: Proc. of the 29th IEEE Conference on Decision and Control, pp. 1685–1690 (1990)Google Scholar
- 17.Na, J., Costa-Castelló, R., Griñó, R., Ren, X.: Discrete-time repetitive controller for time-delay systems with disturbance observer. Asian Journal of Control (2011) (pages Accepted for publication), http://dx.doi.org/10.1002/asjc.428
- 19.Yamamoto, Y.: Learning control and related problems in infinite-dimensional systems. In: Proc. of the 2nd European Control Conference, pp. 191–222 (1993)Google Scholar
- 20.Khalil, H.: Nonlinear systems, 3rd edn. Prentice Hall (2001)Google Scholar