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电励磁同步电机无源性控制系统研究

     

摘要

Passivity-based control is a kind of energy based control strategy with global definition and global stability.As a nature of nonlinear control,it enhance the robustness of the system and is insensitive to the change of parameters and disturbance.The mathematical model in Euler-Lagrange equation of synchronous motor is established in this paper.The key point of passivity-based control is to identify the workless force,which has no effect on the energy balance equation of the close loop.The passivity-based controller is designed based on the workless force.This controller is not only simple and without any singular points,but also unnecessary to have the rotor damping component observer.The simulation shows that the controller can implement the expected goals and effectively demonstrate the strategy.%无源性控制是基于能量观点的一种全局定义且全局稳定的控制策略,对参数变化及外来扰动有较强的鲁棒性,是一种本质上的非线性控制.本文建立了同步电动机基于欧拉—拉格朗日方程的机电统一数学模型,在模型中分离出不影响稳定性的无功力,并在此基础上设计无源性控制器.这种控制器不仅形式简单、无奇异点,而且无需转子阻尼绕组电流观测器.仿真和实验验证了无源性控制器能够很好地实现期望的跟踪控制目标,证明了该控制策略的有效性.

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