基于ESO的PMSM系统自抗扰FCS-MPC策略（英文）

为了提高三相永磁同步电机(PMSM)系统的控制性能,以反双曲正弦函数为基础,通过改进的扩张状态观测器(ESO)获取转速和反电动势项高精度估值,以自抗扰控制作为转速控制调节器,提出了基于ESO的自抗扰有限控制集模型预测控制(FCS-MPC)策略,以减小电磁转矩脉动,降低算法的复杂性和计算量。与基于PI的FCS-MPC策略相比,新的控制策略能够保证PMSM系统稳定运行,具有良好的转速跟踪性、抗干扰性和鲁棒性。     

矩阵变换器驱动永磁同步电机的模型预测转矩控制（英文）

针对三相永磁同步电机(PMSM)系统,采用矩阵变换器(MC)驱动方式,设计了模型预测转矩控制(MPTC)的策略。采用MC驱动替换常规交-直-交变换器,以提高系统输入侧的功率因数(PF),而MPTC预测电压空间矢量保证了系统有良好的转矩和磁链控制效果。在建立MC驱动PMSM系统的数学模型的基础上,给出了MC驱动PMSM的MPTC设计方法。MPTC策略不仅使MC驱动的PMSM系统稳定运行,具有较好的转矩和磁链控制效果,而且输入侧PF能够达到1。与直接转矩控制(DTC)策略相比较,该策略具有更强的抗负载干扰能力和跟踪给定转速变化的能力。最后,通过仿真实验验证了该方法的正确性和有效性。     

基于模糊自抗扰控制在电动汽车PMSM位置驱动系统研究

为实现电动汽车用PMSM转速快速响应和强鲁棒性,本文提出一种基于模糊自抗扰的电动汽车PMSM驱动控制系统,将模糊控制与自抗扰控制结合,将位置反馈作为控制器反馈信号,结合自抗扰控制器中状态变量估计和微分之间的误差,建立误差的模糊规则控制表,进行去模糊化之后得到误差精准的控制量,并通过对非线性误差状态反馈控制率的误差比例系数、微分系数、积分系数进行自适应调节,实现对扰动量的补偿控制,增强电动汽车PMSM驱动系统的抗扰动能力。     

一种提高转矩控制系统性能的新型控制器

在传统异步电机转矩控制策略的基础上,将自抗扰控制器 (ADRC) 的核心环节--扩张的状态观测器 (ESO)引入速度环调节器,构造了一种基于ESO的新型控制器.建立了常规转矩控制系统和采用新型控制器转矩控制系统的仿真模型,并对仿真结果进行分析比较.仿真结果表明,采用新型控制器能有效改善直接转矩控制系统的性能,提高了系统运行的可靠性.新型控制器结构简单,易于实现.     

电动机自抗扰控制技术研究综述

本文介绍了自抗扰控制技术在电机驱动中的应用,自抗扰控制技术解决了电机实时控制中具有不确定参数难以整定的问题,基于自抗扰控制器(ADRC)的原理,估计补偿电机控制中总的扰动项(包括内扰和外扰),提高了控制系统的鲁棒性和动态性能.     

基于ESO及NTD的PMSM无机械传感器位置控制

在分析永磁同步电机(PMSM)系统模型的基础上,提出了一种基于扩张状态观测器(ESO)及非线性跟踪微分器(NTD)的PMSM无机械传感器位置控制系统。控制系统通过基于ESO及NTD的观测器实时观测出电机转子位置及转速,在此基础上实现PMSM无机械传感器位置控制。仿真和实验结果表明该系统结构简单,控制快速、准确、无超调,对于外界干扰具有较强的鲁棒性。     

基于双ESO无电流传感器的永磁同步电机 驱动系统磁场定向控制

针对无任何相电流传感器的三相永磁同步电机(PMSM)驱动系统,提出了一种新颖的基于双扩张状态观测器(ESO)无电流传感器的磁场定向控制(FOC)策略。一般需要两个相电流传感器以进行电流反馈实现高精度控制,为此创建了两个ESO来替代实际电流传感器。第一个ESO用于提供q轴定子电流基准值;考虑到定子电阻和电感变化,第二个ESO用于估计实时d轴和q轴定子电流。所创建的双ESO能够快速和精确地估计实际定子三相电流,所设计的基于双ESO无电流传感器的FOC策略能够使PMSM驱动系统具有良好的控制性能和较强的鲁棒性。仿真实验验证了所提方法的可行性和有效性。     

轧机液压APC系统自抗扰控制器设计

考虑到液压自动位置控制(APC)系统存在不确定外部干扰的特点,首先建立了液压APC系统的模型,然后根据对象的输入输出信息,利用扩张状态观测器(ESO)对扰动项进行了观测和补偿,并基于自抗扰控制技术设计了一个不依赖于对象模型的控制器.仿真结果表明:该控制器不仅有效地抑制了不确定外部干扰对系统的影响,同时对受控对象模型参数的变化也具有较强的鲁棒性.     

基于改进的前馈补偿自抗扰控制伺服系统转速特性研究

针对永磁同步电机转速性能差和转矩脉动的问题,对PMSM的转速启动响应特性、系统输出转矩、转矩脉动对系统的稳态特性的影响等方面进行了研究。为了提高系统响应时间和转速运行的平稳性,采用了基于改进的前馈补偿自抗扰控制策略,建立了伺服系统数学模型和运动方程,设计了速度环和电流环控制策略;利用扩张状态观测器(ESO)对转速和系统扰动进行了实时估计,并对其参数进行了修正;采用加速度前馈补偿对PMSM的扰动进行了补偿,运用专家控制思想,对比例和积分系数进行了调节;利用Matlab对理论分析进行了仿真,在测控机上对改进前后转速响应时间、转矩输出以及抗扰动性进行了测试。研究结果表明:改进后的控制策略能够实现转速快速响应和更好的稳态精度,系统输出转矩稳定、抗扰动性强。     

液压机械传动装置泵-马达系统模糊自抗扰控制

针对液压机械传动装置(Hydraulic Mechanical Continuously Variable Transmission, HMCVT)在阶跃负载扰动、变速器输入转速扰动的影响下所引起的输出转速波动问题,以分矩汇速式液压机械传动装置中的泵-马达系统为研究对象,以系统稳速输出为控制目标,提出一种基于扰动补偿的模糊自抗扰控制(Active Disturbance Rejection Control, ADRC)方法。该方法采用模糊控制理论对自抗扰控制中的非线性误差反馈系数进行在线整定,利用扩张状态观测器(Extended State Observer, ESO)对系统总扰动进行实时观测,并通过前馈控制调节电-液比例阀阀芯位移来补偿变量泵斜盘摆角,最终实现HMCVT稳速控制。仿真结果表明,相比于传统PID控制,采用模糊自抗扰控制的液压机械传动装置在外负载和输入转速突变时,变量泵斜盘抖振幅度更小,系统稳速输出响应时间更短,抗扰动能力更强。     

Anti-disturbance speed control of low-speed high-torque PMSM based on second-order non-singular terminal sliding mode load observer

This paper presents an anti-disturbance speed control of low-speed high-torque permanent magnet synchronous motor (PMSM) based on the second-order non-singular terminal sliding mode load observer. According to the coordinate transformation theory, the mathematical model of PMSM is established. Subsequently, the second-order non-singular terminal sliding mode observer (SNTSMO) is designed to observe the changes of load disturbance in the PMSM system. The SNTSMO combines the advantages of both high-order sliding mode and non-singular terminal sliding mode to achieve the fast convergence and no chattering. Next, the sliding mode controller (SMC) is designed to achieve speed loop control of PMSM. Then, the anti-disturbance compound speed controller is established on the basis of SMC and SNTSMO, wherein the feed-forward compensation is used to reduce the disturbance from the load. Finally, the numerical simulations and experiments are presented according to the schematic diagram of the designed compound speed controller of PMSM. The results demonstrate that the designed SNTSMO can precisely estimate the load disturbance and suppress the effects of buffeting in the traditional sliding mode observer (SMO). Additionally, the designed compound speed controller of PMSM can achieve smooth speed control in the presence of load disturbance, achieve the purpose of anti-disturbance speed control and further improve the robustness of the control system.     

带ESO的ANFTSMC控制PMSM的新型MPTC无传感器控制策略

针对电动汽车中永磁同步电机传统控制策略对电机控制性能差的问题,提出了一种新型的自适应非奇异快速终端滑模模型预测转矩控制策略.设计了新型自适应指数趋近率,用性质更佳的双曲正切函数tanh()替换传统的切换函数sgn(),并构造了带ESO扰动观测的新型ANFTSMC作为系统转速控制器,消弱了抖振,提高了系统鲁棒性.为实现调速系统的无传感器控制,构造了基于tanh(Fal)的ESO转速观测器.与传统基于Fal函数的ESO相比,观测误差较小,观测精度较高.同时,针对预测转矩控制策略,提出了新型的目标函数构造方法,避免了权重系数的设计,并对传统电压矢量选择方法进行了改进与优化,减少了算法的计算量,结合所设计的新型控制器可有效提高系统的快速性,增加算法的实用性.     

Adaptive sliding mode current control with sliding mode disturbance observer for PMSM drives

This paper focuses on the current control of a permanent magnet synchronous motor (PMSM) for electric drives with model uncertainties and external disturbances. To improve the performance of the PMSM current loop in terms of the speed of response, tracking accuracy, and robustness, a hybrid control strategy is proposed by combining the adaptive sliding mode control and sliding mode disturbance observer (SMDO). An adaptive law is introduced in the sliding mode current controller to improve the dynamic response speed of the current loop and robustness of the PMSM drive system to the existing parameter variations. The SMDO is used as a compensator to restrain the external disturbances and reduce the sliding mode control gains. Experiments results demonstrate that the proposed control strategy can guarantee strong anti-disturbance capability of the PMSM drive system with improved current and speed-tracking performance.     

Composite disturbance rejection control based on generalized extended state observer

Traditional extended state observer (ESO) design method does not focus on analysis of system reconstruction strategy. The prior information of the controlled system cannot be used for ESO implementation to improve the control accuracy. In this paper, composite disturbance rejection control strategy is proposed based on generalized ESO. First, the disturbance rejection performance of traditional ESO is analyzed to show the essence of the reconstruction strategy. Then, the system is reconstructed based on the equivalent disturbance model. The generalized ESO is proposed based on the reconstructed model, while convergence of the proposed ESO is analyzed along with the outer loop feedback controller. Simulation results on a second order mechanical system show that the proposed generalized ESO can deal with the external disturbance with known model successfully. Experiment of attitude tracking task on an aircraft is also carried out to show the effectiveness of the proposed method.     

基于等价输入干扰估计器的永磁同步电机无速度传感器控制

提出了一种新型的采用等价输入干扰估计器的永磁同步电机控制系统结构,其控制器采用PI控制方法,估计器采用状态观测器与低通滤波器的组合,在此结构下控制器与估计器的设计满足分离原理.为实时估计电机转速,根据定子侧测量的电压、电流值,基于扩展卡尔曼滤波方法(EKF)设计了电机的转速估计器.仿真结果表明在较宽的速度给定范围内,估计器有较高的估算精度,控制器能很好地抑制未知干扰,提高了永磁同步电机的性能.最后通过dSPACE实验验证了该方法的有效性.     

基于DRNN动态整定PMSM的SVPWM控制

为解决传统的永磁同步电机控制系统中存在的低速转矩脉动大以及由此引起的高频噪声、动态响应慢等问题,提出了一种基于对角神经网络动态自整定的永磁同步电机矢量控制系统的实施方案.给出了基于对角递归神经网络的PID动态自整定控制器的结构,以及PID参数动态自整定的学习控制算法,并将这种综合控制策略引入永磁同步电机空间电压矢量PWM控制中.仿真结果表明,系统低速性能好,转矩脉动小,谐波含量少,当电机参数改变或者受到外部扰动时,系统具有良好的动态特性.     

Robust current control-based generalized predictive control with sliding mode disturbance compensation for PMSM drives

This paper addresses the current control of permanent magnet synchronous motor (PMSM) for electric drives with model uncertainties and disturbances. A generalized predictive current control method combined with sliding mode disturbance compensation is proposed to satisfy the requirement of fast response and strong robustness. Firstly, according to the generalized predictive control (GPC) theory based on the continuous time model, a predictive current control method is presented without considering the disturbance, which is convenient to be realized in the digital controller. In fact, it's difficult to derive the exact motor model and parameters in the practical system. Thus, a sliding mode disturbance compensation controller is studied to improve the adaptiveness and robustness of the control system. The designed controller attempts to combine the merits of both predictive control and sliding mode control, meanwhile, the controller parameters are easy to be adjusted. Lastly, the proposed controller is tested on an interior PMSM by simulation and experiment, and the results indicate that it has good performance in both current tracking and disturbance rejection.     

High accuracy motion control of linear motor drive wire-EDM machines

This paper aims to develop and investigate a permanent magnet linear-motor-driven table system for a wire-EDM machine. A dynamic model and system identification of `the linear motor system have been derived and analyzed. The linear motor drive system has nonlinear and time-varying behaviors because of the effect of irregular friction of the sliding surface and cogging force. Therefore, a conventional digital controller may not suffice to provide a high contouring accuracy as well as adequate disturbance rejection and parameter variation robustness. An indirect adaptive controller (IAC), combined with a neural network-based feedforward controller (NNBFC) is proposed to improve the contouring performance of the linear motor system. Experimental results not only indicate that the proposed control scheme can achieve a high contouring accuracy of ± 0.3 μm, they also demonstrate that the developed linear motor drive wire-EDM machine can meet the requirement for micro machining. The maximum contour error of circular trajectory at a feed-rate of 0.1 mm/min was significantly reduced from 8 μm to 0.5 μm in comparison with proportional-integral-derivative (PID) controller.     

基于DSP的永磁同步电动机矢量控制系统

为了实现对永磁同步电动机的最优控制,设计了一种基于TMS320F2812的永磁同步电动机矢量控制系统。该系统选用TMS320F2812数字信号处理器（DSP）芯片为主控制器;根据磁场定向控制器的控制原理,实现了电机的位置、速度和电流三闭环矢量控制策略;给出了基于磁场定向控制原理而设计的控制器的硬件组成结构及软件设计流程;最后,完成了系统仿真。仿真结果表明：该控制方案合理可行。     

基于延迟补偿的永磁同步电机并行自抗扰控制

为了解决永磁同步电机在多工况下转速易受到内外扰动的影响,提出一种基于延迟补偿的并行线性自抗扰控制策略。 针对永磁同步电机可能受到信号处理、逆变器响应等因素从而引入的外部时滞效应的问题,引入 Smith 预估器与自抗扰控制相 结合,使控制系统更加精确、快速地响应内部参数变化和外部扰动。 同时,针对线性自抗扰控制器(LADRC)在有限带宽内其抗 扰性能较差的问题,设计了并行线性自抗扰控制器,在保持其带宽不变与参数易于整定的同时,有效提高其抗扰动能力。 最后, 对自抗扰控制器的稳定性进行了分析,并在此基础上进行了参数设计与扰动性能分析。 仿真与实验结果表明,所提算法相比 LADRC 在电机受到速度阶跃、负载扰动与内部参数变化时,在调整时间上分别提升了 52. 5% 、49. 5% 与 42. 4% ,从而验证了该 控制策略能有效增强永磁同步电机在多工况下抗内外扰动与速度跟踪能力。