摘要
提出了一种闭环辨识的新方法。通过时域法得到的闭环传递函数与假定过程模型所得的闭环传递函数在相角为 90°和 1 80°两个点上的模和相角的关系 ,从而辨识出假定模型中的未知参数 ,仿真实验的结果表明 ,该方法是可行的 ,并且有较好的精度。
A new method of closed-loop identification was proposed. Transfer function of closed-loop can be gotten through time-domain method or from proposed process model,then unknown parameters are identified in proposed model through relation of gain and phase shift at two points(one phase shift is 90° ,the other is 180°) in closed-loop transfer function.Simulation results reveal that this new method is feasible and can get a good accuracy.
出处
《控制工程》
CSCD
2002年第6期82-83,96,共3页
Control Engineering of China
