System Identification Of Electronic Wedge Brake (EWB)

D. Ravisankar, Devarajee (2012) System Identification Of Electronic Wedge Brake (EWB). Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This study deals with the use of Electronic Wedge Brake(EWB) in improving driving quality and solving common problems in current vehicle braking systems. This new electronic brake concept is based on an electric powered controlled friction brake with high self-reinforcement capability which has performance advantages over conventional brake systems. The main content of this study is the development of System Identification of EWB. Modeling is done to study the brake behavior on a real vehicle through MA TLAB SIMULINK. software. Detail design of EWB mechanism with CATIA is done followed by test rig which consist of one unit linear variable displacement transducer (L VDT), one unit load cell, one unit rotation encoder, data acquisition (DAQ) and EWB actuator. Experimental result are then used to develop the System Identification of EWB and followed by the EWB modeling. Common problems in hydraulic braking system vary from few sources such as air in the brake line, brake fluid leakage, sticking pistons and more. The ideal solution for these problems is the development and implementation of EWB system in modern vehicles. EWB system are said to be the perfect system to replace existing hydraulic braking system in vehicles because of its dominant advantages. This EWB system results low power consumption, totally silent with no vibration during braking, able to react more quickly and hence shortening the stopping distance. However this EWB system may fail if power supply to be this system is disrupted. To take care of this, EWB is to be connected to a main and a backup power supply. The development of EWB system brings the technology further advance and providing the perfect platform for X-by-wire technologies. In future, brakeby- wire is predicted to be replaced by wireless braking system .

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