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Research on Direct Torque Control of Permanent Magnet Synchronous Motor for New Energy Vehicles 被引量:1
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作者 Zhenzhou Niu Xiaopeng Li 《Modern Electronic Technology》 2021年第2期1-6,共6页
This article introduces the control principle,technical status and two commonly used motor control schemes of permanent magnet synchronous motors for new energy vehicles.Direct torque control is selected as the resear... This article introduces the control principle,technical status and two commonly used motor control schemes of permanent magnet synchronous motors for new energy vehicles.Direct torque control is selected as the research object,and its advantages and disadvantages with vector control are analyzed.A Simulink simulation model was established according to the control principle. 展开更多
关键词 motor control strategy control principle Direct torque control
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A novel two-degree-of-freedom spherical ultrasonic motor using three travelling-wave type annular stators 被引量:6
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作者 王剑 胡锡幸 +1 位作者 王班 郭吉丰 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第4期1298-1306,共9页
In order to promote the tolerance and controllability of the multi-degree-of-freedom(M-DOF) ultrasonic motor, a novel two-degree-of-freedom(2-DOF) spherical ultrasonic motor using three traveling-wave type annular sta... In order to promote the tolerance and controllability of the multi-degree-of-freedom(M-DOF) ultrasonic motor, a novel two-degree-of-freedom(2-DOF) spherical ultrasonic motor using three traveling-wave type annular stators was put forward. Firstly,the structure and working principle of this motor were introduced, especially a spiral spring as the preload applied component was designed for adaptive adjustment. Then, the friction drive model of 2-DOF spherical motor was built up from spatial geometric relation between three annular stators and the spherical rotor which was used to analyze the mechanical characteristics of the motor.The optimal control strategy for minimum norm solution of three stators' angular velocity was proposed, using Moore-Penrose generalized inverse matrix. Finally, a 2-DOF prototype was fabricated and tested, which ran stably and controllably. The maximum no-load velocity and stall torque are 92 r/min and 90 m N·m, respectively. The 2-DOF spherical ultrasonic motor has compact structure, easy assembly, good performance and stable operation. 展开更多
关键词 two-degree-of-freedom ultrasonic motor spherical rotor friction drive model optimal control strategy
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