结构振动控制参数多目标满意优化方法

通过引入满意度,把结构振动控制的参数优化归结为多目标决策,用非线性规划进行求解,为结构振动控制参数多目标优化提供了一种有效算法。从结构振动控制一般方程、复特征值求解出发,以多目标优化广义满意度为基础,讨论了结构振动控制参数多目标优化的参数选取,给出了独立满意度函数和多目标加权满意度的表达式。以斜拉桥拉索减振为例,对长索油阻尼器系统阻尼值进行了以加权满意度为基础的参数优化分析,给出了总体满意度高、各阶模态减振均有一定满意度的结果。

Multiple objective satisfaction optimization for structural vibration control

The optimization of structural vibration control was analyzed as a multiple objective decision-making problem using a satisfaction degree parameter with non-linear programming. The governing equations for vibrations with controlling forces were written as an eigenvalue problem with multiple-objective optimization. Expressions are given for the independent satisfaction degree and the weighted satisfaction degree of the vibration control. The method is used to optimize vibration control of a long cable in a cable-stayed bridge with an oil damper. The results show that the method is applicable with a certain satisfaction degree obtained for vibration mitigation.