身管振动主动控制中传感/作动器的位置优化

针对复合材料身管振动主动控制中离散分布的压电传感 /传动器位置优化问题 ,首先构造一种新型退化层合壳单元对全系统进行了有限元建模 ,然后提出了优化配置的最优控制性能指标 ,以此作为适应度函数 ,运用遗传算法进行了全局寻优 ,最后求解了一个模拟身管算例 ,得到了最优、次优解 ,验证了本文的方法是实用、有效的

OPTIMAL PLACEMENT OF PIEZOELECTRIC SENSORS AND ACTUATORS FOR ACTIVE VIBRATION CONTROL OF A BARREL USING GENETIC ALGORITHMS

In this paper optimal placement of distributed piezoelectric sensors and actuators for active vibration control of a composite material barrel is investigated. First, a new kind of coupled mechanical/ electrical degenerated shell element is constructed for FE modeling of the whole active control system, then optimal control performance index is presented which is used for fittness function. On this basis, All scope optimal search is conducted using genetic algorithm. Finally, an example of simulated piezo coupled barrel is considered, whose results show that this method is an effective and practical technique.