基于模糊全阶滑模观测器的PMSM无传感器控制  

Sensorless Control of PMSM Based on Fuzzy Full⁃order Sliding Mode Observer

作　　者：于辉 周士贵 马飞鸿 张可程 YU Hui;ZHOU Shigui;MA Feihong;ZHANG Kecheng(College of Engineering,Qufu Normal University,Rizhao 276800,Shandong,China;Rizhao Oriental Motor Limited Company,Rizhao 276800,Shandong,China)

机构地区：[1]曲阜师范大学工学院,山东日照276800 [2]日照东方电机有限公司,山东日照276800

出　　处：《电气传动》2024年第7期3-10,共8页Electric Drive

基　　金：山东省自然科学基金面上项目(ZR2021ME017);科技型中小企业创新能力提升工程(2021TSGC1429)。

摘　　要：为解决传统滑模观测器采用固定滑模增益在永磁同步电机转子位置检测低速抖振严重的问题,提出了旨在提高宽调速范围滑模抖振抑制性能的模糊自适应调节滑模增益的全阶滑模观测器。首先,以定子电流与扩展反电动势为观测对象构建全阶滑模观测器,采用定子电流实际值与观测值的误差和误差变化率为输入量构建模糊控制规则,并根据实时观测的电机转速,实现在不同转速时的滑模增益自适应调节。然后,采用双曲正切函数代替传统的符号开关函数实现软开关切换的连续滑模控制,并且为消除转速造成的影响,采用归一化正交锁相环获得扩展反电动势中准确的转子位置信息。最后,搭建了永磁同步电机驱动试验平台,在低速与中高速范围内分别进行实验验证。实验结果表明,相比于传统滑模观测器,所提算法在宽调速范围时控制性能更具有优势。Permanent magnet synchronous machines(PMSM)has serious chattering problem when traditional sliding mode observer(SMO)is applied to low-speed operation with fixed sliding mode gain.To solve this problem,a full-order sliding mode observer(FSMO)with fuzzy adaptive adjustment of sliding mode gain was proposed,which can improve the chattering suppression performance in a wide speed range.First,a FSMO was constructed with stator current and extended back-EMF as observation objects.In addition,the fuzzy control rules were constructed by using the error and error change-rate of the actual and observed values of the stator current as the input,and the adaptive adjustment of the sliding mode gain was realized according to the different speed of the motor.Then,the soft switching continuous sliding mode control was realized by using hyperbolic tangent function instead of traditional sign function.Moreover,in order to eliminate the influence of variable speed,the normalized orthogonal phase-locked loop was used to obtain the accurate rotor position from the extended back-EMF.Finally,the PMSM drive test platform was built,and the performance of low speed and medium-high speed was tested.The experimental results show that the proposed algorithm has significant advantages in wide speed range over traditional algorithms.

关 键 词：永磁同步电机 全阶滑模观测器 模糊自适应控制 无传感器控制 双曲正切函数 

分 类 号：TM351[电气工程—电机]