摘要
为研究牵引工况下电力机车永磁同步电机(PMSM)的转速控制精度,建立机车PMSM在d-q坐标系下的数学模型;考虑轮轨接触面不平顺在轮对径向产生的未知时变扰动,设计Super-Twisting观测器(STO)对其实际值进行估计,对估计误差采用自适应模糊逻辑系统进行逼近以削弱时变扰动对系统的影响;结合系统控制量存在饱和的实际工况,引入饱和辅助控制系统;依据Lyapunov稳定性理论,构造基于STO的自适应模糊滑模控制器.仿真结果表明,对于外部扰动作用下的机车PMSM转速闭环控制系统,跟踪误差一致有界,扰动观测误差收敛于0。
For the study of speed control precision of permanent magnetic synchronous motor(PMSM)on electric locomotive during traction,a mathematical model of PMSM was established in d⁃q coordinate system after considering unknown radially time⁃varying disturbance of wheelset generated by wheel rail contact irregularity.Super⁃Twisting Observer(STO)was designed to estimate the actual value of the time⁃varying perturbation with the observation error approached by adaptive fuzzy logic system to weaken the perturbation.Auxiliary control system was brought in for the control variables saturation.According to the Lyapunov stability theory,adaptive fuzzy sliding mode controller with STO was constructed.Simulation results demonstrate that the PMSM speed control system on electric locomotive has uniform error boundness with interference observation error constricted to 0.
作者
林辉
刘芳璇
王晓琴
王桂荣
LIN Hui;LIU Fang⁃xuan;WANG Xiao⁃qin;WANG Gui-rong(Department of Railway Power Traction,Xi’an Railway Vocational and Technical Institute,Xi’an 710026,China;College of Mechanical and Electrical Engineering,China Metrology University,Hangzhou 310018,China)
出处
《电子设计工程》
2020年第14期108-112,共5页
Electronic Design Engineering
基金
国家自然科学基金资助项目(51505373,61640314)
陕西省教育厅自然科学研究项目(17JK1081)
西安铁路职业技术学院2019年度立项课题(XTZY19G09)。
