考虑粘贴效应和测量噪声的压电作动器/传感器优化配置

针对柔性结构振动主动控制中的作动器/传感器配置问题,提出了一种在考虑粘贴效应和测量噪声情况下的优化配置方法.首先,在一定条件下,把配置位置有限化;然后利用卡尔曼分离原理,先进行作动器配置,在此基础上进行传感器配置,而不必同时进行优化配置,从而减少了优化计算量,并给出在测量噪声情况下的最优配置结果.柔性梁数值仿真结果表明该方法的有效性和快速性,也同时给出了非同位配置结果,与以往配置结果相比尤其是传感器位置有一定的改变.

Optimal Placement of PZT Actuator/Sensor Considering Stick Effect and Measuring Noise

The goal of this study is to present a methodology for obtaining optimal placement of PZT actuator/sensor considering stick effect and measuring noise in active vibration control of a flexible structure.Firstly,the candidate positions are supposed to be finite,and Karlman separate principle is used to obtain the actuator location.Based on the actuator location,the sensor location is found.This methodology does not need to find the optimal placement at the same time.The procedure is greatly simplified,it reduces the optimal numerical computations and gives the optimal placement result when there exists measuring noise.Numerical example of a flexible beam is presented to show that the methodology is efficient and fast,and an uncollated placement result is given,it is different from the common result and the sensor position changes more.