Model and Dynamic Characteristics of Electromagnetic Split Clutch for Hydraulic Power Steering Application

Abstract:

In order to improve bus drivers’ high-speed road feel and reduce parasitic loss of hydraulic power steering system (HPS), a novel power steering system is proposed, which is characterized by an electromagnetic slip clutch (ESC) which regulates discharge flow of steering pump to realize variable assist characteristics as well as uniquely transfers on-demand power from ICE to steering pump. The mathematic model of ESC including flux linkage equations, voltage equations, electromagnetic torque equation and kinematic equations under synchronous rotating coordinate system (d-q coordinate) is constructed. Dynamic characteristic, mechanical characteristic, input-output characteristic and excited current-output speed characteristic of ESC are simulated. Finally, the experiment of ESC is implemented. The consistence of simulation results and experiment results indicate correctness and precision of the model.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 759-762
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.759
• Online since: September 2014
• Authors: Bin Tang*, Hao Bin Jiang, Guo Qing Geng
• Keywords: Bench Test, Dynamic Characteristic, Electromagnetic Slip Clutch, HPS, Modeling

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