两种基于测量噪声的PID控制整定方法

摘要

测量噪声能够产生非期望的控制行为,这些行为能够降低执行机构的损坏程度和系统性能.噪声的影响可以通过滤波测量信号来降低.控制设计是一个复杂的问题,它需要一个在性能和鲁棒性之间的折衷的方法.反馈的缺点是将测量噪声带入到系统中,噪声产生的非期望控制行为可以用滤波器来减少.在控制设计中必须考虑滤波器产生的额外动态.主要讨论两种降低测量信号滤波对由噪声引起的非期望控制行为以及负载扰动响应和过程不确定性鲁棒性的影响的方法.%Measurement noise generates undesired control activity that results in wear of actuators and reduces system performance.The effects of measurement noise can be alleviated by filtering the measurement signal.Control design is a complex issue that requires a compromise between performance and robustness.The disadvantage of feedback is that the measurement noise is taken into the system,but the undesired control behavior of noise can be reduced by a filter.The additional dynamic of filter must be considered in the control design.Two methods to reduce the influences of filtering of the measured signal on the undesirable control actions generated by measurement noise,and the load disturbance response and the process uncertainty robustness,are explored.