直升机纵向系统鲁棒滑模控制律设计

在建立系统全包线T-S模糊模型的基础上,基于系统品质要求和可测状态约束条件,采用参数鲁棒设计方法,确定反馈控制参数的可用集合,实现等效控制律,相应确定系统的滑模面参数,给出了直升机纵向控制系统的全包线滑模控制律设计结果。仿真结果显示,系统具有较强的抗外界干扰能力,动态品质满足指标要求,表明文中提出的设计方法可行且有效。

A New and Effective Design of Robust Sliding Mode Control Law for Longitudinal Model of Helicopter

Sections 1 through 4 of the full paper explain our design method mentioned in the title,which we believe is new and more effective than previous ones.Their core consists of:(1) we establish the T-S fuzzy model of a helicopter in its whole envelope;(2) we use the parameter robust design method to determine the sets of available feedback control parameters;(3) we implement the equivalent control law in accordance with the requirements of the performance of the helicopter and the constraints of measurable states;(4) we determine the sliding mode surface parameters of the helicopter and design the sliding mode control law for its longitudinal model in the whole envelope.Section 5 simulates the sliding mode control law thus designed;the simulation results,given in Figs.8 and 9,and their analysis show preliminarily that our sliding mode control law has strong interference-suppression capability and satisfies the dynamic performance requirements for the helicopter,indicating that our design method is indeed feasible and effective.