CAJ | 학술논문

设计了一种新型滑模控制方法，该方法不但能对已有的控制律进行鲁棒性改进，而且能有效抑制抖振现象。在该方法的设计过程中，首先基于已有的控制律和标称系统，设计了一种新型的动态滑模面，然后对超扭曲算法进行改进，得出了一种快速、连续且有限时间收敛的算法，并首次将其作为新型趋近律，该趋近律与滑模面相结合能够大大增强现有控制律的鲁棒性，而且滑模的切换律是连续的，因此大大降低了系统的抖振。将以上方法应用于再入飞行器的姿态跟踪控制中，有效增强了已有控制律的鲁棒性，实现了大干扰情况下对姿态系统的稳定控制。通过仿真，验证了该方法在提高系统鲁棒性和降低抖振方面的有效性。
설계료일충신형활모공제방법，해방법불단능대이유적공제률진행로봉성개진，이차능유효억제두진현상。재해방법적설계과정중，수선기우이유적공제률화표칭계통，설계료일충신형적동태활모면，연후대초뉴곡산법진행개진，득출료일충쾌속、련속차유한시간수렴적산법，병수차장기작위신형추근률，해추근률여활모면상결합능구대대증강현유공제률적로봉성，이차활모적절환률시련속적，인차대대강저료계통적두진。장이상방법응용우재입비행기적자태근종공제중，유효증강료이유공제률적로봉성，실현료대간우정황하대자태계통적은정공제。통과방진，험증료해방법재제고계통로봉성화강저두진방면적유효성。
A novel sliding mode control method was proposed in this paper,which is not only capable of improving the robust?ness of the existing control law,but can also effectively attenuate chattering.In the design process,a novel dynamic sliding mode sur?face was designed firstly based on the nominal system and the existing control law.Then the super?twisted algorithm was improved.A fast continuous and finite time convergence algorithm was obtained,which was adopted as the novel reaching law for the first time. The reaching law combined with the sliding mode surface can greatly enhance the robustness of the existing control law.In addition, since the sliding mode switching law is continuous,the chattering was greatly attenuated. The proposed method was then applied to attitude tracking control of reentry vehicle and the robustness of the existing control law was effectively enhanced under large dis?turbance.Finally,the effectiveness of the method was demonstrated through simulation.