Speed control of drive-train incorporating magnetic coupling

Liao, Xiaowen, Bingham, Chris, Zolotas, Argyrios , Zhang, Qinghua and Smith, Tim (2020) Speed control of drive-train incorporating magnetic coupling. In: 2020 International Conference on Electrical Machines.

Full content URL: https://doi.org/10.1109/ICEM49940.2020.9270948

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Item Type:Conference or Workshop contribution (Paper)
Item Status:Live Archive


The paper presents a two-degree-of-freedom control method that exploits the spring dynamics of a magnetic coupling for electromechanical torque transfer. Initially, through analysis of a dynamic model and linearisation, it is shown that control parameters designed by previous reported methods can be too aggressive, and that a broader performance envelope can be obtained by linearising at around 75% of pull-out torque. Secondly, the paper presents a method of identifying the spring dynamics without measuring the load-side position of the coupling. Finally, input shaping and the identified parameters are employed to provide a new methodology. The internal model principle is used along with the proposed linearisation scheme to construct a feed-forward/feedback control scheme whose parameters are calculated to provide a desired tracking and disturbance rejection characteristics. Experimental results show excellent reference tracking and load torque disturbance rejection performance, whilst reducing the possibility of poles-lipping due to aggressive control action.

Keywords:Magnetic coupling, speed control, spring dynamics, analytic design, two-degree-of-freedom PID
Subjects:H Engineering > H620 Electrical Engineering
H Engineering > H660 Control Systems
Divisions:College of Science > School of Engineering
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ID Code:46464
Deposited On:10 Nov 2021 11:12

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