SIMULATION AND EXPERIMENTAL STUDY OF A NEW ELECTROMECHANICAL BRAKE WITH AUTOMATIC WEAR ADJUSTMENT FUNCTION |
Yun Feng Fu1, Xin Hua Hu1, Wei Rui Wang2, Zheng Ge3 |
1Jinhua Polytechnic 2Zhejiang University 3Zhejiang Sci-Tech University |
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ABSTRACT |
This paper presents a novel electromechanical brake (EMB) with automatic wear adjustment function, which has been ignored in most previous studies. With the aim of investigating the parameter characteristics of the EMB system and analyzing the proposed function, the mathematical models of the DC motor, motor friction, worm drive, ball screw and load are established in MATLAB/Simulink. The differences between the simulation and the experiment under step, triangular wave, square wave and sinusoidal input signals are discussed. The parameter characteristics of clamping force-motor current and clamping force-ball screw displacement are obtained, which also verifies that the established model is correct. The results demonstrate that the automatic wear adjustment function of the new EMB could guarantee that the brake stroke and response time remain consistent across each braking manoeuvre. |
Key Words:
Brake-by-wire, Electromechanical brake, Parameter characteristics, Automatic wear adjustment, Experimental verification |
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