Abstract
A cross coupling control strategy based on second-order global fast terminal sliding mode control(2-GFTSMC) is proposed in this paper aiming to improve the synchronization accuracy of dual-motor under external load and disturbance. Firstly, the global fast terminal sliding mode controller is designed to improve the starting performance and dynamic performance of single motor and eliminate chattering phenomenon. Secondly, in order to improve the synchronization accuracy, enhance the stability of the dual-motor system and shorten the response time, a second-order global fast terminal sliding mode controller is designed by combining the global fast terminal sliding mode control with the cross-coupling control strategy. Finally, an experimental platform of dual-motor synchronous control is built, and the effectiveness of the proposed synchronization control strategy is verified by experiments.
Highlights
In recent decades, permanent magnet synchronous motor (PMSM) has been widely applied to be the drive unit of aircraft, electric vehicles and other industrial field due to its high power density, simple structure and high efficiency [1]
Aiming at the above problems, a new cross coupling control strategy based on second-order global fast terminal sliding mode control(2-global fast Terminal sliding mode control (GFTSMC)) is proposed in this paper in order to design a dual-motor speed synchronous system with good dynamic performance, high speed synchronization accuracy, and without chattering phenomenon, and its major contributions are as following: 1) A GFTSMC is applied to speed control of the single motor, which improves the antiinterference ability and dynamic performance of the single motor system
2) A 2-GFTSMC strategy is proposed by applying global fast terminal sliding mode to the dualmotor speed synchronization control system, and the response speed for dual motor system is improved
Summary
Permanent magnet synchronous motor (PMSM) has been widely applied to be the drive unit of aircraft, electric vehicles and other industrial field due to its high power density, simple structure and high efficiency [1]. The global fast Terminal sliding mode control (GFTSMC) was applied to the PMSM servo system in [14], which improves the response speed and dynamic performance of the motor. Aiming at the above problems, a new cross coupling control strategy based on second-order global fast terminal sliding mode control(2-GFTSMC) is proposed in this paper in order to design a dual-motor speed synchronous system with good dynamic performance, high speed synchronization accuracy, and without chattering phenomenon, and its major contributions are as following: 1) A GFTSMC is applied to speed control of the single motor, which improves the antiinterference ability and dynamic performance of the single motor system. 2) A 2-GFTSMC strategy is proposed by applying global fast terminal sliding mode to the dualmotor speed synchronization control system, and the response speed for dual motor system is improved.
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