Robust Internal Model Control for Motor Systems Based on Sliding Mode Technique and Extended State Observer.
IROS(2020)
摘要
Electric motors have been widely used as the actuators of robot and automation systems. This paper aims at achieving the high-precision position control of motor drive systems. For this purpose, a robust control scheme is presented by combining the internal model principle, the sliding mode technique and the extended state observer (ESO). The PID-type controller is firstly designed by using the internal model control (IMC) rules. Since the analysis of the IMC system is performed via a sliding surface, a robust sliding mode control (SMC) law is then synthesized to enhance the control ability of the system to uncertainties. However, this robust solution should make a trade-off between the chattering attenuation and the control accuracy. To handle this drawback, a linear ESO is employed to compensate the modeling errors for a higher control accuracy. The stability analysis is provided via a Lyapunov-based method, and the superiority of the proposed approach was validated by comparative experiments on a motor drive platform.
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关键词
robust internal model control,motor systems,sliding mode technique,extended state observer,electric motors,robot,automation systems,high-precision position control,motor drive systems,robust control scheme,internal model principle,PID-type controller,internal model control rules,IMC system,sliding surface,robust sliding mode control law,control ability,modeling errors,higher control accuracy,Lyapunov-based method,motor drive platform
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