压电定位系统的自耦PID控制

针对一类存在非线性迟滞特性的纳米定位压电驱动器的控制问题,使用了一种与被控系统无关的自耦比例积分微分(ACPID)控制方法。该方法将系统内部所有复杂因素及外部扰动定义为一个总扰动,建立了以总扰动为激励的受控误差系统,进而设计了基于ACPID控制理论的压电定位控制系统。理论分析了ACPID控制系统的鲁棒稳定性和抗扰动鲁棒性。仿真结果表明,ACPID控制系统的有效性不仅具有更快的响应速度、更高的控制精度,且具有良好的抗扰动鲁棒性,在压电定位系统控制领域具有较大应用价值。

AutoCoupling PID Control for Piezoelectric Positioning System

Aiming at the control problem of a kind of nano positioning piezoelectric actuator with nonlinear hysteresis, an autocoupling proportionalintegraldifferential(ACPID) control method independent of the controlled system is used. In this method, all the internal complex factors of the system and external disturbances are defined as a total disturbance, and a controlled error system with the total disturbance as the excitation is established, and then a piezoelectric positioning control system based on ACPID control theory is designed. The robust stability and antidisturbance robustness of ACPID control system are analyzed theoretically. The simulation results show that the ACPID control system is effective. It not only has faster response speed, higher control accuracy, but also has good antidisturbance robustness. It has great application value in the field of piezoelectric positioning control system.