Design and clamping force modelling of electronic wedge brake system for automotive application
by Muhammad Luqman Hakim Abd. Rahman; Khisbullah Hudha; Fauzi Ahmad; Hishamuddin Jamaluddin
International Journal of Vehicle Systems Modelling and Testing (IJVSMT), Vol. 8, No. 2, 2013

Abstract: Most automotive vehicles utilise hydraulic system for actuating braking mechanism producing brake torque to wheels. Besides being disadvantageous on weight, space and system, hydraulic brake requires high energy to flow brake fluid for pushing piston. Leakage and vaporisation of hydraulic fluid are main problems that degrade braking performance of hydraulic brake system. A new design of electronic wedge brake system is presented to replace and to overcome the shortcomings of hydraulic brake system. The proposed electronic wedge brake system consists of piston, wedge mechanism, worm gear and an electric motor. Rotational motion of worm gear driven by electric motor will activate wedge mechanism causing piston to displace linearly. Displacement of piston will generate clamping force between pads and disk thus producing brake torque. The proposed electronic wedge brake system is developed and its behaviour is investigated using brake test rig. The proposed electronic wedge brake system is modelled mathematically. Parameters for model were obtained experimentally. The model was validated by comparing response of the model with experimental rig.

Online publication date: Sat, 19-Jul-2014

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