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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。对于非线性结构试验,采用比例-微分(PD)控制器的等效力控制方法会使等效力响应产生稳态误差。该文用比例-积分(PI)控制器代替PD控制器以解决此问题。分析与模拟的结果都表明,对于非线性体系的等效力控制方法试验,PI控制优于PD控制。
Equivalence Control Method Nonlinear Equation Solving Real - time Substructure Test Implicit Stepwise Integration Method by Using Feedback Control instead of Mathematical Iteration Process. For nonlinear structural tests, equivalent force control using Proportional-Derivative (PD) controllers produces steady-state errors for equivalent response. This paper uses proportional-integral (PI) controller instead of PD controller to solve this problem. The results of analysis and simulation show that PI control is superior to PD control for the equivalence control method test of nonlinear system.