基于IMM/EA的卫星姿态控制系统重构容错控制  

IMM/EA-based on-orbit reconfigurable fault-tolerant control for satellite attitude control system

作　　者：陈雪芹[1] 张迎春[1] 耿云海[1] 李化义[1] 

机构地区：[1]哈尔滨工业大学卫星技术研究所,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2007年第5期774-777,共4页Systems Engineering and Electronics

摘　　要：研究了在轨卫星姿态控制系统发生可修复性故障状况下的系统重构容错控制。对于处于稳态的三轴稳定卫星,当姿态发生突变时,启动故障检测与诊断(FDD)子系统,采用交互式多模型(IMM)算法得到故障发生的位置以及故障模型,同时利用故障模型中的动力学系统进行特征结构配置(EA),生成重构控制器对原系统进行补偿控制。将FDD过程与重构控制器的设计过程结合,避免了单独设计FDD子系统然后再进行系统重构带来的计算量和时间延迟。最后通过数值仿真验证了该算法的有效性。This paper investigates the reconfiguration fault-tolerant control method of the on-orbit satellite attitude control system with recovered faults. For a three-axis stability satellite in steady phase, starting the fault detection and diagnosis （FDD） subsystem when the attitude changes suddenly. In the FDD subsystem, an interacting multiple model （IMM） algorithm is developed to estimate the location and model of the fault system, the dynamic part of this model is used in eigenstrueture assignment （EA）. Then a reeonfiguration fault-tolerant controller is carried out to compensate the primary controller. The FDD process and the reeonfiguration controller design are combined to avoid the large amount of computation and delay while design the FDD subsystem and reeonfiguration controller separately. In the last, mathematical simulation validats the solution in a satellite closed-loop attitude control system.

关 键 词：故障检测与诊断 补偿 容错控制 卫星姿态控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]