论文部分内容阅读
针对自适应压电桁架结构振动控制,建立了作动器/传感器优化配置数学模型,并提出一种优化配置的新方法。为了减少结构分析次数,该方法将近似概念、对偶法和遗传算法相结合,首先采用多点近似技术建立原问题的序列近似问题,再对近似问题中的作动器/传感器位置离散变量和控制增益连续变量采用遗传算法和对偶方法分别寻优的分层优化策略。为了提高近似问题对原问题的逼近程度,本文提出一种适于离散变量结构优化的分段多点近似函数。算例表明本文方法能够以很少的结构分析次数得到最优解。
Aiming at the vibration control of adaptive piezoelectric truss structure, a mathematical model of actuator / sensor optimization configuration is established and a new method of optimal configuration is proposed. In order to reduce the number of structural analysis, this method combines the approximate concept, the dual method and the genetic algorithm. Firstly, the multi-point approximation technique is used to establish the sequence approximation of the original problem. Then the actuator / sensor position discrete variables and control Stratified Optimization Strategy for Gain Continuous Variables Using Genetic Algorithm and Dual Method, respectively. In order to improve the approximation degree of approximation to the original problem, this paper proposes a piecewise multi-point approximation function which is suitable for structural optimization of discrete variables. The example shows that this method can get the optimal solution with few structural analysis times.