Nonlinear feedback control is used to control chaos in pmsm . the objective of this method is more suitable for the real application , and this method is robust against model error and measurement noise . simulation results show the effecti 這些研究大部分針對(duì)實(shí)際工程對(duì)象,討論了初始條件的限制,模型誤差和噪聲的影響,控制目標(biāo)的要求,控制的魯棒性,不確定模型的處理等問題。