基于模态应变能理论的作动器优化布置

Optimal Actuator Layout Based on Modal Strain Energy Theory

定义了高层结构的模态应变能,针对单阶模态应变能准则存在的不足,提出一种不依赖于具体控制算法的且能考虑不同模态振型影响的综合模态应变能准则。利用改进的遗传算法进行优化问题的求解,得到最优作动器位置。对20层钢结构振动控制的仿真结果表明,经优化布置的作动器对结构的振动控制取得良好的效果,验证了优化准则的有效性。

The modal strain energy of high-rise building is defined.To overcome the disadvantage of the single-order modal strain energy criterion,a comprehensive modal strain energy criterion is proposed,which does not depend on control algorithm,and can consider the effects of different modes.The improved genetic algorithm is used to solve the optimization problem,and the optimal actuator position is obtained.The simulation results of vibration control for 20-storey steel structure show that the optimized actuators have good effect on vibration control of the structure,and the validity of the optimization criterion is verified.