控制与决策
控製與決策
공제여결책
CONTROL AND DECISION
2013年
2期
201-204
,共4页
航天器%姿态控制%鲁棒控制%高阶滑模控制%振颤现象
航天器%姿態控製%魯棒控製%高階滑模控製%振顫現象
항천기%자태공제%로봉공제%고계활모공제%진전현상
spacecraft%attitude control%robust control%higher order sliding mode control%chattering phenomenon
针对大型空间飞行器的大角度姿态控制问题,考虑航天器惯量矩阵中的不确定性和外部扰动力矩,应用高阶滑模控制方法设计了姿态跟踪控制律.采用的二阶滑模控制方法改善了系统针对不确定性及外部扰动的鲁棒性,并减弱了振颤现象.针对所设计的控制器进行了仿真验证,并与一阶滑模控制进行了对比,仿真结果表明了所提出方法的有效性.
針對大型空間飛行器的大角度姿態控製問題,攷慮航天器慣量矩陣中的不確定性和外部擾動力矩,應用高階滑模控製方法設計瞭姿態跟蹤控製律.採用的二階滑模控製方法改善瞭繫統針對不確定性及外部擾動的魯棒性,併減弱瞭振顫現象.針對所設計的控製器進行瞭倣真驗證,併與一階滑模控製進行瞭對比,倣真結果錶明瞭所提齣方法的有效性.
침대대형공간비행기적대각도자태공제문제,고필항천기관량구진중적불학정성화외부우동력구,응용고계활모공제방법설계료자태근종공제률.채용적이계활모공제방법개선료계통침대불학정성급외부우동적로봉성,병감약료진전현상.침대소설계적공제기진행료방진험증,병여일계활모공제진행료대비,방진결과표명료소제출방법적유효성.
For the large angle attitude control of large-scale spacecraft with uncertainties in the inertial matrices of spacecraft and the external disturbance torques, attitude tracking control laws are designed based on the higher-order sliding mode control technique. With the second-order sliding mode control used in the design, the robustness of the system with respect to uncertainties and external disturbances is improved, and the chattering phenomena are attenuated. For the designed controllers, numerical simulations are carried out, and compared with first-order sliding mode controllers. The simulation results show the effectiveness of the proposed method.
