空间智能桁架模糊振动控制研究

研究了模糊控制应用于多输入、多输出的空间智能桁架系统的振动控制.首先建立空间智能桁架的有限元方程,在此基础上,设计了一个标准的模糊控制器,并通过选择合适的量化因子将该标准模糊控制器应用于每一对同位布置的作动器/传感器,各个控制器之间独立工作.这样就避免了设计MIMO模糊控制器带来的复杂问题.最后针对空间智能桁架进行仿真,结果表明,设计的模糊控制器可以有效抑制桁架的振动,并且具有结构简单、鲁棒性强、抑制控制溢出的优点.

Fuzzy Logic Vibration Control of Space Intelligent Truss

The use of fuzzy logic control to suppress the vibration of a multi-input,multi-output(MIMO) space intelligent truss system is studied in this paper.Firstly,theoretical modeling of the vibration of space intelligent truss with piezoelectric active bar is presented.Then a standard fuzzy logic controller is designed to avoid the complexity of designing an MIMO fuzzy logic controller.It can be used for every actuator/sensor pairs by selecting appropriate scaling factors.Every controller works independently.Finally,the simulation of fuzzy control of a space intelligent truss is carried out.The result shows that the fuzzy logic controller designed in this paper can successfully suppress the vibration of the truss.It also has the advantages of simple structure,strong robustness and suppressing control spillover.