Integrated-electro-hydraulic brake system (I-EHB) fulfills the requirements of the intellectualization and electronization of brake system, so I-EHB is the trend of brake system. In order to overcome oscillation and low-speed creeping problems caused by friction in hydraulic pressure control of integrated electro-hydraulic brake system, chatter-compensation method is adopted. The experimental results shows that by using chatter-compensation the control accuracy rate is high and the tracking performance is increased. When I-EHB tracks sinusoidal wave, the RMS (root mean square) of error of control system with chatter-compensation is 79.7 % lower then that of control system without chatter-compenstion. Based on the analysis of different kinds of chatter signals, the chatter signal is optimized in different working conditions such as high-frequency signal and low-frequency signal. The experimental results show that chatter-compensation can mitigate the oscillation and low-speed creeping problems caused by friction. Furthermore the optimized chatter-compensation can improve the control of hydraulic pressure further.
XIONG Lu
,
XU Songyun
,
YU Zhuoping
. Optimization of Hydraulic Pressure Control System of Integrated Electro-hydraulic Brake System Based on Chatter-compensation[J]. Journal of Mechanical Engineering, 2016
, 52(12)
: 100
-106
.
DOI: 10.3901/JME.2016.12.100
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