移动质心自旋再入飞行器的建模与解耦控制  

Modeling and Decoupling Control of Spinning Reentry Vehicle with a Moving Mass

作　　者：孙卫华[1] 李高风[1] 王小虎[1] 

机构地区：[1]北京控制与电子技术研究所,北京100038

出　　处：《计算机仿真》2008年第11期72-75,共4页Computer Simulation

摘　　要：对移动质心控制自旋再入飞行器进行了概念研究。以所建立的移动质心自旋再入飞行器的姿态动力学模型为基础,分析其控制耦合特性,借鉴工程中易于实现的逆奈奎斯特阵列法,对被控对象进行预补偿,使其传递函数矩阵成为具有对角优势来削弱被控对象各回路间的耦合,然后再运用单变量系统的频域设计方法对每个回路单独设计,从而将复杂的多变量设计问题转化为单变量设计问题,解决较强耦合下自旋再入飞行器姿态稳定性问题。仿真分析表明,对被控对象进行预补偿设计后,系统达到了较好的解耦效果。Conceptional study of spinning reentry vehicle with a moving mass is presented. Characteristic of control coupling was analyzed based on the model of attitude dynamics for spinning reentry vehicle with a moving mass. The method of Inverse Nyquist array was adopted and pre - compensation was conducted for controlled plant. Transfer function matrix has pseudo - diagonalisation advantage to weaken the coupling of controlled plant loop. Then frequency design of single variable was implemented for every separated loop, so frequency design of multi - variables was transformed into frequency design of single variable. Attitude stability was settled for spinning reentry vehicle with a moving mass. Simulation shows that the system was decoupled effectively after the controlled plant was pre - compensated.

关 键 词：移动质心控制 自旋再入飞行器 逆奈奎斯特阵列 解耦 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]