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系統在數學(xué)模型上的相似之處。永磁同步電機本身是不會(huì )呈現混沌特性的，但是隨著(zhù)電機外部力矩的變化及q軸電壓的變化，就有可能產(chǎn)生混沌現象。傳統的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(xiàn)性反饋控制，該控制器能夠使非線(xiàn)性的電機系統轉化為普通的一階系統，從而可以通過(guò)線(xiàn)性系統的零極點(diǎn)配置達到期望的響應特性?？紤]到實(shí)際系統的某些變量可能無(wú)法測量，在非線(xiàn)性反饋的基礎之上，引入了基于混沌降階同步的狀態(tài)觀(guān)測器，用估計值代替某些不可測量的變量，進(jìn)而構成非線(xiàn)性反饋，實(shí)現了電機系統的控制。同時(shí)通過(guò)Lyapunov直接法證明了觀(guān)測器的穩定性。仿真結果也證明了該控制器的有效性。
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