本文将直升机的自转着陆过程定义为一个非线性的最优控制问题。
The landing of a helicopter in autorotation is formulated as a nonlinear optimal control problem.
而在真空退火的生产过程中，退火工件温度的精确控制是一个典型的非线性、大时滞、强耦合的复杂控制问题。
The accurate control of the work pieces temperature in vacuum annealing furnace is a typical nonlinear large time delay and cross coupling complicated problem.
系统利用重复控制抑制非线性负载下的电压畸变，利用瞬时值反馈控制加快负载突变时的动态响应过程。
Repetitive control is used to reduce voltage distortion under nonlinear loads and instantaneous feedback control is designed to quicken the dynamic response process under abrupt load variation.
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