Linear Electro-Magnetic Valve Characteristic Analysis and Precise Pressure Control of the Electro-Hydraulic Brake System

2016 ◽  
Author(s):  
Haizhen Liu ◽  
Rui He ◽  
Jian Wu ◽  
Wenlong Sun ◽  
Bing Zhu
Keyword(s):  
Pressure Control ◽  
Brake System ◽  
Characteristic Analysis ◽  
Hydraulic Brake ◽  
Magnetic Valve ◽  
Electro Magnetic

Research on a Novel Electro-Hydraulic Brake System and Pressure Control Strategy

2018 ◽  
Author(s):  
Haizhen Liu ◽  
Rui He ◽  
Weiwen Deng ◽  
Shun Yang ◽  
Jian Wu ◽  
...  
Keyword(s):  
Control Strategy ◽  
Pressure Control ◽  
Brake System ◽  
Hydraulic Brake

A novel pressure control strategy of an electro-hydraulic brake system via fusion of control signals

2019 ◽  
Vol 233 (13) ◽  
pp. 3342-3357 ◽  
Author(s):  
Wei Han ◽  
Lu Xiong ◽  
Zhuoping Yu
Keyword(s):  
Control Strategy ◽  
Sliding Mode ◽  
Pressure Control ◽  
Tracking Performance ◽  
Brake System ◽  
Automotive Application ◽  
Friction Compensation ◽  
Hydraulic Brake ◽  
Model Based ◽  
Control Signals

With the development of electro-hydraulic brake system in the automotive application, pressure control is at the top of a brake system engineer’s agenda. This work focuses on the development of a pressure-loop controller for a motor-type electro-hydraulic brake system, which is composed of an electro-mechanical actuator and a hydraulic link. The pressure control issue of motor-type electro-hydraulic brake system is influenced intensely by the nonlinearities (i.e. friction) and uncertainties (e.g. temperature variation, brake pad wear, and so on) of the system and by the very demanding performance specifications (i.e. supporting cooperative work with hydraulic control unit of anti-lock brake system). The pressure control of motor-type electro-hydraulic brake system is investigated, and a novel pressure–based control strategy via fusion of control signals is proposed to improve the pressure tracking performance. The control strategy comprises online model–based friction compensation, online dither–based friction compensation, and feedback control. Four original contributions make this work distinctive from the existing relevant literature. Selecting the Coulomb+viscous friction model can maximize to reduce difficulty of parameter identification and Stribeck effects detection based on maintaining the pressure tracking accuracy. Thanks to the model-based friction compensation torque, the signal magnitude of dither-based friction compensation torque can be decreased so that the vehicle comfort can be improved. The compensation parameters of both the model-based and dither-based friction compensation can be online modified according to the operating point of system. The robustness of the fusion controller is enhanced by employing the sliding mode control algorithm with conditional integrator. The performance of the proposed control strategy is evaluated by hardware-in-the-loop-simulation and vehicle experiment in typical braking situations. The experimental results with fusion control show improved pressure tracking performance in comparison with that without fusion control.

A Research on Modeling and Pressure Control of Integrated Electro-Hydraulic Brake System

2021 ◽  
Author(s):  
Bing Wang ◽  
Minghui Wang ◽  
Yongfeng Jiang ◽  
Wen-Bin Shangguan
Keyword(s):  
Pressure Control ◽  
Brake System ◽  
Hydraulic Brake
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