CAJ | 학술논문

针对电机控制中采用的PI调节器对电机参数变化及外加干扰时鲁棒差和无位置传感器控制实现困难等问题,在研究常规永磁同步电机矢量控制策略的基础上,将滑模变结构控制(VSSMC)和无迹卡尔曼滤波(UKF)引入该策略中,用VSSMC分别替代策略中速度PI控制器和2个PI电流控制器,同时利用UKF对电机定子直轴电流、交轴电流、负载转矩、转子位置和转速进行实时估计,提出了一种新颖的基于VSSMC和UKF的永磁同步电机无传感器矢量控制方案.仿真结果验证了新方案的正确性,所设计的VSSMC能有效调节转速和电流,其调节效果优于常规PI控制器,所设计的UKF观测器能准确估计系统状态,而且两者对系统参数摄动、外干扰、测量误差以及测量噪声都具有极强鲁棒性,系统的动、静态性能明显增强.
침대전궤공제중채용적PI조절기대전궤삼수변화급외가간우시로봉차화무위치전감기공제실현곤난등문제,재연구상규영자동보전궤시량공제책략적기출상,장활모변결구공제(VSSMC)화무적잡이만려파(UKF)인입해책략중,용VSSMC분별체대책략중속도PI공제기화2개PI전류공제기,동시이용UKF대전궤정자직축전류、교축전류、부재전구、전자위치화전속진행실시고계,제출료일충신영적기우VSSMC화UKF적영자동보전궤무전감기시량공제방안.방진결과험증료신방안적정학성,소설계적VSSMC능유효조절전속화전류,기조절효과우우상규PI공제기,소설계적UKF관측기능준학고계계통상태,이차량자대계통삼수섭동、외간우、측량오차이급측량조성도구유겁강로봉성,계통적동、정태성능명현증강.
Aim. To solve the problems that sensorless vector control is difficult to implement and that the parameters of normal PI (proportional integral) control cannot be adjusted on-line in the conventional motor control, we propose a novel control method. Sections 2 and 3 of the full paper explain in some detail our novel control method. Its core consists of: (1) we design a variable structure sliding-mode speed controller and a variable structure sliding-mode current controller to replace the traditional speed PI controller and two current PI controllers; (2) we design the unscented Kalman filter (UKF) observer to estimate direct-axis current, quadrature-axis current, load torque, rotor position and speed simultaneously. Section 4 presents simulation results and their analysis. The simulation results, given in Figs. 3 through 5, and their analysis show preliminarily that: (1) the variable structure sliding-mode controllers designed by us can effectively regulate the rotational speed and the current of the IPMSM; (2) the UKF observer we designed can accurately estimate motor states and is robust against perturbation, exterior disturbance and measurement error.