A steady-state and dynamic response model for working characteristics prediction of the electromechanical transmission system including eddy-current magnetic coupler
Affiliations: [a] School of Mechanical Engineering, Jiangsu University, Zhenjiang, China
Correspondence:
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Corresponding author: Chaojun Yang, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China. E-mail: [email protected]
Abstract: In this paper, a steady-state and dynamic response model is proposed to predict the working characteristics of the electromechanical transmission system including eddy-current magnetic couplers. Considering the influence of mechanical characteristics of motor and load device on the performance of eddy-current magnetic couplers, the system is divided into input and output for kinematic analysis. The expressions of electromagnetic torque versus speed are obtained through layer analysis of the eddy-current magnetic coupler during steady-state and then, the dynamic response model of the system is established by combining the kinematic analysis with the motor, the eddy-current magnetic coupler and three typical loads (constant torque load, quadratic rate load and constant power load). The dynamic characteristics during starting and speed-regulation of the system under constant torque loads are analyzed using the proposed model. The variations of the torque and speed with time of input and output are calculated by numerical integration. Finally, the speed and torque during starting and speed-regulation computed with the dynamic response model are compared with those obtained from the experimental results. The result shows a good agreement.
Keywords: Electromechanical transmission system, eddy-current magnetic couplers, a steady-state and dynamic response, working characteristics, mechanical characteristic, kinematic analysis
