Cascade sliding mode control based on extended state observer method for a DC-DC buck converter
作者单位：School of ElectricalEnergy and Power EngineeringYangzhou University
会议名称：《第40届中国控制会议》
会议日期：2021年
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0802[工学-机械工程] 0835[工学-软件工程] 080201[工学-机械制造及其自动化]
关 键 词：DC-DC buck converter cascade sliding mode control (CSMC) extended state observer (ESO) disturbance rejection
摘 要：A cascade sliding mode control（CSMC） based on extended state observer（ESO） is proposed for a pulse width modulation based DC-DC buck converter system subject to disturbances in this ***,a novel tracking error state space model is introduced to define the matched and mismatched disturbances as a uniform matched ***,an extended state observer is designed to estimate the system states and total disturbances,including load disturbances and input voltage ***,the novel cascade sliding mode controller is constructed for the DC-DC buck converter based on the estimate *** addition,the detailed theoretical stability analysis of the proposed controller is analyzed by a Lyapunov stability ***,compared with traditional sliding mode control based on ESO（SMC-ESO） method,simulation results show that the CSMC-ESO method not only has the advantage of easy parameter tuning,but also performs a better disturbance rejection ability.