用附加输入信号改变非线性环节传递特性

Using Additional Input to Change the Transform Property of Nonlinear Function

用双输入描述函数法研究了附加输入对非线性控制系统性能的影响,推导了双输入描述函数的简化计算公式,针对死区、滞环和继电非线性进行了具体分析。

This paper studies the effect of additional input on the performance of nonlinear control system through DIDF method(Double Inputs Descriptive Function),deduces the simplified formulas for DIDF calculation,and analyses the effects of vibra-tion signal on the nonlinear functions of dead band,gear clearance and relay.