摘要
同步电动机的高性能控制研究始终是非线性控制领域中的一个重要研究方向,无源性控制(PBC)方法的提出为同步电动机控制系统的非线性设计带来了全新的思路。利用本质上是非线性反馈控制的PBC方法,与自适应控制相结合,实现负载转矩时变未知情形下磁链、转速的渐近跟踪,并可有效抑制由转子电阻变化引起的跟踪误差。该方法从能量角度分析电机控制系统,设计全局定义的控制律,具有形式简单、无奇异点、鲁棒性好等特点。基于dSPACE的实验结果证明了该控制策略的有效性。
Due to the potential value in applications and theory, nonlinear control strategies of synchronous motors, especially passivity-based control（PBC） methods, have been a focus in the literature. The main purpose of this paper is to develop a control algorithm that forces the synchronous motor to track flux and speed trajectories with time-varying load torque. To achieve this, an adaptive PBC method is developed. The key point with this method is the identification of terms, known as workless forces, which appear in the dynamic equations of synchronous motor but do not have any effect on the energy balance equation of the closed loop. PBC combined with adaptive control scheme not only reserves the advantages of PBC such as nonexistence of singularity, but also represses the flux and speed tracking error caused by rotor resistance variation. This leads to a simple control structure and enhances the robustness of the control system. The reasonability and validity are testified by the experimental results based on dSPACE.
出处
《电工技术学报》
EI
CSCD
北大核心
2009年第10期33-39,共7页
Transactions of China Electrotechnical Society
基金
973(2005CB221505)
高等学校博士学科点专项科研基金(20050248058)资助项目
