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基于积分状态预测的Anti-WindupPID控制器设计

, PP. 145-152

Keywords: Anti-Windup策略,调节器饱和,永磁同步电机,积分状态预测

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Abstract:

目前有多种方式用来抑制调速系统中调节器饱和引起的Windup现象。其中跟踪反计算控制策略,由于其采用线性反馈作用原理来减小调节器饱和时的积分累加值,因此对于这种策略的研究和应用较多。但由于在设计调节器参数时,没有考虑速度指令和负载的变化,固定的反计算参数一般难以在大范围内保证系统响应的一致性。为了在不同速度指令和负载转矩条件下,保证系统响应的一致性,本文提出了积分状态预测Anti-Windup策略来减小系统由于饱和现象而引起的性能下降,根据速度指令和负载转矩的变化,在调节器饱和时计算出积分器在系统稳态积分终值,并将其作为调节器进入线性段的积分初始值,当系统参数精确时使得系统呈现出最优的速度响应曲线。本文在相同的电流环和速度环调节器PI参数的条件下,进行了仿真实验,比较了上述AW策略与传统方法的速度响应性能。实验结果验证了理论分析及仿真波形的正确性。

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