采用滑动模态控制器的等效力控制方法

Equivalent Force Control Method with Sliding Mode Controller

等效力控制方法用反馈控制代替数学迭代过程求解实时子结构试验隐式逐步积分方法的非线性方程。滑动模态控制是一种非线性控制器,适合于进行线性和非线性系统的控制。对于非线性结构实时子结构试验的等效力控制方法,采用滑动模态控制器代替PID控制器。线性弹簧试件实时子结构试验的数值模拟和试验验证了这种控制方法的可行性。防屈曲支撑试件数值模拟和试验的结果表明:对非线性系统的等效力控制方法试验,滑动模态控制有较好的控制效果。

Equivalent force control method use the feedback control to replace the mathematics iteration to solve the nonlinear equation of real-time substructure test with implicit integrate method. The sliding mode controller is a nonlinear controller. For nonlinear structural real-time substructure test, it was used to replace the PID controller of the equivalent force control method. The simulation and real-time substructure experimental results of linear stiffness specimen prove the feasibility of this control method. And the simulation and experimental results of buckling-restrained brace （BRB） specimen demonstrate that the sliding mode control has good control effect for equivalent force control test of nonlinear system.