摘要
矢量控制永磁同步电机的dq轴电流采用PI控制时,参数变化和负载扰动会影响电流环的动静态性能。为了提高电流环对这些不确定性的适应能力,结合模型参考自适应控制(MRAC)和PI控制,设计了一种自适应复合控制方法。PI控制简化了MRAC的控制对象,基于平衡点稳定理论设计的MRAC弥补了PI控制在克服参数变化和干扰影响方面的不足。仿真和实验结果表明,自适应复合控制方法改进了电流环的跟随性能,提高了系统的速度响应和抗负载扰动的能力。
When the dq axis currents of permanent magnet synchronous motor （PMSM） that decoupled by vector control are controlled by PI controller, the parameter changes and the load disturbance affect the static and dynamic performance. In order to improve the adaptability of these uncertainties, an adaptive hybrid control method was proposed, which was achieved by a model reference adaptive controller （MRAC） combined with PI controller. The current loop adjusted by PI controller could simplify the design of the adaptive controller. The adaptive controller designed using equilibrium-point-stability theory made up the deficiency of PI controller by overcoming the interference of the parameters changes and the disturbance. The results of simulation and experiment show that the performance of current-loop is improved using adaptive hybrid control method. The speed response and the immunity of disturbance are also improved by this method.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第22期7199-7204,共6页
Journal of System Simulation
基金
国家杰出青年科学基金(60525314)
国家863计划(2004AA424313)
