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根据变结构系统(VSS)理论对某飞行器伺服回路进行了变结构设计,给出了控制器设计的详尽步骤,设计方法几何意义直观,在IBM4341机上通过了数字仿真,给出了仿真框图;与原伺服回路的控制性能进行了比较。仿真表明,VSS比传统普通控制系统具有以下几个突出的优点:(1)快速、无超调、无稳态误差;(2)对系统参数交化具有鲁棒性;(3)对外界干扰具有鲁棒性。
According to the variable structure system (VSS) theory, the variable structure design of an aircraft servo loop is given, and the detailed steps of the controller design are given. The geometric meaning of the design method is intuitive, digital simulation is carried out on the IBM4341, and the simulation block diagram is given. The control performance of the original servo loop were compared. The simulation shows that VSS has the following outstanding advantages over the conventional control system: (1) fast, no overshoot, no steady-state error; (2) robustness to the system parameters; (3) Robust.