非线性汽门控制器的自适应鲁棒逆推设计

针对带有内部及外部扰动的汽轮机调速系统，使用自适应逆推方法构造出调速系统的存贮函数，进而同时获得非线性L2增益干扰抑制控制器及参数替换律。该控制器在内部扰动中重点考虑了输电线路参数的不确定性，因此不仅能够抑制干扰对系统输出的影响，而且对系统参数变化也具有很强的鲁棒性。同时，基于该方法的设计过程系统、简明，易为工程人员所接受。仿真结果表明该自适应逆推方法设计的控制器拥有优越的性能。

ADAPTIVE ROBUST BACKSTEPPING DESIGN FOR NONLINEAR STEAM VALVE CONTROLLER

In view of internal and external disturbances to turbine speed governor system , storage functions of the control system are constructed based on adaptive backstepping method, then a nonlinear L2 gain disturbance attenuation controller and parameter updating law are obtained simultaneously. The controller can not only attenuate the influences of external disturbances on system output, but also has strong robustness for system parameters variation, which is because of the transmission line uncertainty being considered in internal disturbances. The design procedure based on the adaptive backstepping method is systematic and concise, it is believed that this method can be accepted with a considerable ease by engineers. The simulation result demonstrates that the controller designed by adaptive backstepping possesses superior performances.