智能桁架结构最速自抗扰振动控制研究  

Time Optimal Active Disturbances Rejection Vibration Controller for Intelligent Truss Structures

作　　者：陈文英[1,2] 褚福磊[1] 阎绍泽[1] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084 [2]北京特种车辆研究所,北京100072

出　　处：《力学季刊》2009年第1期121-126,共6页Chinese Quarterly of Mechanics

基　　金：国家杰出青年科学基金项目(50425516);国家自然科学基金重点项目(10732060)

摘　　要：研究新型实用的非线性自抗扰控制技术,在大型空间智能桁架结构主动振动控制中的应用。自抗扰控制技术的主要特性是采用扩张状态观测器对系统建模、未建模动态和外扰进行实时估计,并在控制信号中补偿掉,实现非线性不确定对象的动态补偿线性化。首先,基于动态补偿线性化的思想,对多变量耦合的非线性智能桁架结构的数学模型进行解耦;然后,采用扩张状态观测器和离散最速控制综合函数提出了一种新颖的最速自抗扰振动控制器。最后,对空间102杆压电智能桁架结构进行了最速自抗扰振动控制仿真研究。结果表明:本文提出的最速自抗扰振动控制器较好地解决了振动控制的准确性和快速性之间的矛盾,可有效地用于大型空间智能桁架结构的主动振动控制。This paper studied how to use the new nonlinear active disturbances rejection control（ADRC） technique for active vibration control of large space intelligent truss structures. The key element of ADRC is extended state observer （ESO）. The real-time dynamic linearization was implemented by disturbance estimation via ESO and disturbance compensation by the control law. Based on the real-time dynamic linearization theory, the multivariable coupled nonlinear mathematical model of intelligent truss structure was uncoupled. By using the extended state observer and the discrete time optimal control function, a novel time optimal active disturbances rejection vibration controller （TOADRVC） was initially proposed. Finally, the TOADRVC was used for active vibration control of the 102-bar space piezoelectric intelligent truss structure. The simulation results demonstrate that the TOADRVC successfully solves the contradiction between accuracy and rapidity, which can effectively be used for the vibration suppression of large space intelligent truss structures.

关 键 词：智能桁架结构 自抗扰控制技术 主动振动控制 

分 类 号：TB535[理学—物理] TP273[理学—声学]