HJI robust control method based on disturbance observer

• Main Authors: ZHAO YUNJIE, ZHANG LINGJUN, LI TIANRUI, DING WEIHONG, SUN RUI, JI XIAOLONG
• Format: Patent
• Language: Chinese; English
• Published: 31.10.2023
• Subjects: CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

The invention relates to the technical field of inverter control, and provides an HJI inverter robust control method based on a disturbance observer. According to the method, the second-order system can be effectively controlled under the conditions of external disturbance, uncertainty and unknown interference. In order to eliminate the time lag influence on output feedback caused by remote signals during transmission, external disturbance is recognized through a second-order disturbance observer, in addition, an SMC control law is designed according to the HJI theory to improve the robustness of the system, and the stability of the system is analyzed through a Lyapunov second method. Compared with the prior art, the method can effectively improve the control of the second-order system, and verifies the feasibility of the theory on the auxiliary power supply inverter. 本发明涉及逆变器控制技术领域，提出一种基于扰动观测器的HJI逆变器鲁棒控制方法。该方法可以在具有外界扰动、不确定性、未知干扰的情况下，对二阶系统进行有效的控制。为了消除远方信号在传输时给输出反馈造成的时滞影响，通过二阶扰动观测器识别外部扰动此外，还根据HJI理论设计了SMC控制律来提升