2016年6
月
V01．31
Jun．
No．12
2016
电工技术学报
第31卷第12期TRANSACTIONSOFCHINA ELECTROTECHNICAL SOCIETY
基于滑模观测器与滑模控制器的
永磁同步电机无位置传感器控制
2
陈思溢1 皮佑国
广州 510640
510640)
(1．华南理工大学自主系统与网络控制教育部重点实验室
2．华南理工大学自动化科学与工程学院 广州
摘要 针对无位置传感器永磁同步电机控制系统中转子位置与转速无法直接测量的问题，提
出基于滑模观测器的转子位置间接检测方法。通过研究低速时滑模观测器的估算误差较大的特点，
分析无位置传感器控制方式下电机存在无法零速起动的问题，利用变压变频控制策略进行他控起
动。依据滑模观测器的电流跟随特性和滑模控制器的转速跟随特性，同时引入时变项，在提高滑
模面收敛速度的基础上实现了调速系统由他控方式向自控方式的平滑过渡。仿真和实验证明，提
出的算法不仅解决了滑模观测器在零速及附近的低速范围内所存在的预测死区问题，而且削弱了
两种控制方式切换过程中产生的抖振。
关键词：永磁同步电机 无位置传感器 滑模观测器 滑模控制器 变压变频控制
中图分类号：TP273
for
Position Sensorless Control
Permanent
Motor
Magnet Synchronous
Basedon Sliding Mode Observer and Sliding Mode Controller
ChenSiyil Pi
Yougu02
ofAutonomous
and NetworkControl
ofEducation
(1．KeyLaboratory
Systems
Ministry
South China
of
5 1 0640 China
University
Technology Guangzhou
2．School ofAutomation Scienceand
South China
Engineering
University ofTechnology
5 1 0640 China)
Guangzhou
on
Abstract In this
for the
scheme of sensorless detection based
mode observer is
sliding
paper，a
sensorless control
in
permanent
synchronous motor(PMSM)
proposed
position
system
sliding
magnet
the estimation errors existed in
mode observer at low
lead to
speed that
By analyzing
starting
failure under sensorless control strategy，a method for PMSMrunning with constant
volt／hertz(V／F)is
the
of current and motor
proposed．Considering
following performance
speed in sliding mode observer
item is introduced．It can
mode
(SMO)and sliding
controller(SMC)respectively，a time—varying
the
from
V／F method to self-controlled method in
control
speed
achieve
smooth transition
constant
also can
improve
the
rate of the
mode surface．Simulations and
solve the dead—zone of SMOat
only
system，and
experiments
convergence
control
sliding
demonstrate that the
cannot
proposed
strategy
and low
also reduce the
in the between the two
switching process
standstill
speed，but
chattering
control methods．
mode
observer，
Keywords：Permanent magnet synchronous motor，position sensorless，sliding
and variable control
sliding mode
controller,variable
voltage
frequency
收稿日期2014-05．22 改稿日期2015-04-13
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