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Robust Controller Design and Analysis of a 2-DOF Mechanism

机译:二自由度机构的鲁棒控制器设计与分析

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For piezo-driven compliant mechanisms,the modeling uncertainties,external disturbances,and the measurement noise greatly affect the performance of the closed-loop system.This paper presents a compound robust controller design of a 2-DOF compliant mechanism.During the controller design,the modeling uncertainties are derived and analytically represented based on the experimental observations.A robust controller through the μ synthesis is established to stabilize the closed-loop system in the presence of uncertainties,external disturbances,and the measurement noise.In addition,a Proportional-Integral controller is also integrated to the robust controller so as to eliminate the steady state tracking error.The compound controller achieves high robustness performance margin,and thus is capable of improving the tracking performance of the closed-loop system.The computational analyses reveal that the compound controller is feasible in piezo-driven applications.
机译:对于压电驱动的顺从机构,建模不确定性,外部干扰和测量噪声会极大地影响闭环系统的性能。本文提出了一种2自由度顺从机构的复合鲁棒控制器设计。在控制器设计过程中,在实验的基础上,推导并分析了模型的不确定性。建立了一种通过μ综合的鲁棒控制器,以在存在不确定性,外部干扰和测量噪声的情况下稳定闭环系统。集成控制器也被集成到鲁棒控​​制器中,以消除稳态跟踪误差。该复合控制器具有很高的鲁棒性性能裕度,因此能够改善闭环系统的跟踪性能。复合控制器在压电驱动的应用中是可行的。

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