基于混沌同步的永磁同步電機控制

　　本文首先介紹了永磁同步電機與混沌Lorenz系統(tǒng)在數學模型上的相似之處。永磁同步電機本身是不會呈現混沌特性的，但是隨著電機外部力矩的變化及q軸電壓的變化，就有可能產生混沌現象。傳統(tǒng)的PI控制器在抑制混沌上作用又不是很明顯。由此引入了非線性反饋控制，該控制器能夠使非線性的電機系統(tǒng)轉化為普通的一階系統(tǒng)，從而可以通過線性系統(tǒng)的零極點配置達到期望的響應特性?？紤]到實際系統(tǒng)的某些變量可能無法測量，在非線性反饋的基礎之上，引入了基于混沌降階同步的狀態(tài)觀測器，用估計值代替某些不可測量的變量，進而構成非線性反饋，實現了電機系統(tǒng)的控制。同時通過Lyapunov直接法證明了觀測器的穩(wěn)定性。仿真結果也證明了該控制器的有效性。
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