基于混沌同步的永磁同步电机控制

　　本文首先介绍了永磁同步电机与混沌Lorenz系统在数学模型上的相似之处。永磁同步电机本身是不会呈现混沌特性的，但是随着电机外部力矩的变化及q轴电压的变化，就有可能产生混沌现象。传统的PI控制器在抑制混沌上作用又不是很明显。由此引入了非线性反馈控制，该控制器能够使非线性的电机系统转化为普通的一阶系统，从而可以通过线性系统的零极点配置达到期望的响应特性。考虑到实际系统的某些变量可能无法测量，在非线性反馈的基础之上，引入了基于混沌降阶同步的状态观测器，用估计值代替某些不可测量的变量，进而构成非线性反馈，实现了电机系统的控制。同时通过Lyapunov直接法证明了观测器的稳定性。仿真结果也证明了该控制器的有效性。
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