基于制造誤差的伺服電機轉(zhuǎn)矩脈動穩(wěn)健性設(shè)計

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Robust design of servo motor torque pulsation based on manufacturing error

LIU Kai1，2， ，WANG Yi1， JIANG Weizhi2， WANG Hong'， WU Xuanqin2（1.School of Electromechanical Engineering and Automation，Harbin Institute of Technology（Shenzhen），Shenzhen 518055，China； 2.Suzhou INVT Power Electronics Corporation，Suzhou 215153，China）

Abstract： Aiming at the torque ripple of servo motor，the influence of manufacturing error on the torque ripple of motor was studied and analyzed，and a robust design method of motor was put forward based on Taguchi method.Firstly，the electromagnetic model of the motor was established based on the actual manufacturing error of three-coordinate measurement. Secondly，the specific influence of manufacturing error on torque ripple was analyzed by electromagnetic finite element simulation. Then，the key design parameters of the motor were selected as control factors through sensitivity analysis，and the stator ellpticity and rotor static eccentricity were regarded as noise factors. The design parameters of the motor were optimized through orthogonal test，thus improving the robustness of motor torque ripple.The experimental results show that the simulation results of the motor model considering the actual manufacturing error are in good agreement with the measured data，and the torque ripple variance is effectively reduced by 71.66% by adopting the robust design scheme.

Keywords： torque ripple; cogging torque; manufacturing error; robust design; taguchi method

0引言

在現(xiàn)代工業(yè)自動化和精密控制領(lǐng)域，永磁伺服電機因其高效率、高功率密度、寬調(diào)速范圍以及良好的動態(tài)響應(yīng)特性，已經(jīng)成為各種伺服系統(tǒng)中的核心部件[1-3]。（剩余10287字）