【摘要】 针对板壳型自适应结构 ,研究了使用压电材料的层合板结构的静力变形控制 .基于有限元法 ,计算出结构位移的灵敏度矩阵 ;利用该矩阵 ,建立位移控制方程组 .当作动器数量与控制位移相同时 ,可解线性方程组 ,求出控制电压 ;当作动器数少时 ,采用优化方法求解 ,由此计算各作动器的控制电压 ,对自适应结构的静力变形 ,进行最优控制 .算例比较了不同的控制情况更多还原

【Abstract】 The static shape control of composite plate adaptive structure was studied. Using the piezoelectric composite laminated plated element, the displacement sensitivity matrix was established. Then,the optimal control equations were derived from the sensitivity matrix. If there were same number of controlled displacements and actuators,the voltage of actuators could be obtained precisely by calculating linear equations. When the number of actuators was less,optimal methods were used,and the equations could be solved to achieve the optimal shape control of adaptive structure. Numerical example were given to compare the different control situations, and the results showed the efficiency of the method and the importance of actuators placement.更多还原