网状天线反射面形状精度控制智能结构作动器的位置优化

Study on the optimal placements of the actuator in the shape precision control intelligent structures of the mesh shape antenna reflector

就网状天线反射面振动控制智能结构的作动器位置优化进行了讨论;把模态分析和能量作用原理相结合,提出了一个网状天线反射面振动控制智能结构的作动器位置优化的新方法;求每个候选单元的位置评价准则TC(所有模态的模态可控度之和),TC大的候选单元就是作动器的最佳位置.并用算例验证了该方法的正确性.

The shape precision control of the large diameter and high precision mesh shape antenna reflector in the orbit has become one of the major developing trends of modern space techniques. In this paper, a new way for the optimal placements of the actuator in the shape precision control intelligent structures of the mesh shape antenna reflector with the characteristics of large size and flexibility is used: mode analysis technology is applied to optimize placements of the actuator. The modal importance factor is defined, and then by weighting the candidate active members strain energy in each mode by the corresponding modal importance factors, the criterion TC of optimal placements of the actuator is obtained. The results of simulation shows that the control method is very effective.