Boundary conditions of active steering control of independent rotating wheelset based on hub motor and wheel rotating speed difference feedback |
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Authors: | Yuanjin Ji Jinsong Zhou |
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Affiliation: | Rail Transit Institute of Tongji University, Shanghai, People’s Republic of China |
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Abstract: | The source of torque ripple in a permanent-magnet synchronous motor was analysed. Based on the feedback of the rotating speed difference between the left and right wheels, the error value of torque ripple in an in-wheel motor was calculated. Next, a simulation model of active steering control of an independently rotating wheel (IRW) in an in-wheel motor was developed to investigate effects of torque ripple. The relationship between the accuracy of active steering control of an IRW in an in-wheel motor and wheel/rail profile was derived, and then the boundary conditions of active steering control were obtained. Finally, a method was proposed to improve the active steering control of an IRW by optimising the tread. |
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Keywords: | Independently rotating wheel in-wheel motor active control |
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