摘要
为了实现永磁同步电机的无传感器控制,提出了一种改进型super-twisting滑模观测器算法。该super-twisting滑模观测器通过引入连续函数削弱了系统抖振,进而得到了扩展反电动势的估计值,并根据Lyapunov稳定性理论判断观测器的收敛特性,最后通过相位补偿方法得到了转子位置和速度信息。与传统滑模观测器相比,改进型super-twisting滑模观测器提高了转子位置和转速的估计精度和稳定性,削弱了系统抖振,提高了系统鲁棒性和动态响应能力。最后以仿真和实验结果验证了该方法的有效性和可靠性。
In order to realize the sensorless control of permanent magnet synchronous motors,an improved super-twisting sliding mode observer algorithm was proposed.The super-twisting sliding mode observer reduced the system chattering by introducing a continuous function,and then obtained the estimated value of the extended back EMF,and judged the convergence characteristics of the observer according to the Lyapunov stability theory,and finally obtained the rotor position and speed information by the phase compensation method.Compared with the traditional sliding mode observer,the improved super-twisting sliding mode observer improved the estimation accuracy and stability of the rotor position and speed,weakened the system chattering,and improved the system’s robustness and dynamic response capability.Finally,the effectiveness and reliability of the method were verified by simulation experiment results.
作者
彭健琴
李昕涛
PENG Jianqin;LI Xintao(School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024,China;Engineering Research Center of Heavy Machinery Ministry of Education, Taiyuan University of Science and Technology,Taiyuan 030024,China)
出处
《微电机》
2021年第4期62-68,共7页
Micromotors
基金
山西省重点研发项目(201803D121123)
重型机械装备省部共建协同创新中心专项资助(2020-3-11-17)
太原科技大学校教改项目(JG201910)。
