Research of Subway Electro-Pneumatic Brake Force Distribution Strategies

2014 ◽  
Vol 680 ◽  
pp. 347-353
Author(s):  
Meng Ling Wu ◽  
Lei Zhi Wu ◽  
Yun Feng Li ◽  
Chun Tian
Keyword(s):  
System Simulation ◽  
Force Distribution ◽  
Simulation Platform ◽  
Brake Shoe ◽  
Braking System ◽  
Brake Force ◽  
Pros And Cons ◽  
Brake Force Distribution

Through the investigation of some problems of subway, that is, abnormal wheel tread wear and excessive brake shoe abrasion, caused by applying irrational electro-pneumatic brake force distribution strategies in the quotidian operation subway lines, a braking system simulation platform based on AMESim is established in order to point out the pros and cons of various distribution strategies, such as diverse converting points of electric and pneumatic braking, assorted pneumatic brake force distribution methods; the indexes include brake shoe pressure and imposed time of pneumatic braking; service brake and emergency brake are regarded.

Study of the Antilock Braking System with Electric Brake Force Distribution

2010 ◽  
Vol 29-32 ◽  
pp. 1985-1990 ◽  
Author(s):  
Ju Wei Li ◽  
Jian Wang
Keyword(s):  
Control Method ◽  
Sliding Mode ◽  
Force Distribution ◽  
Standard Equipment ◽  
Braking System ◽  
Antilock Braking System ◽  
Asphalt Road ◽  
Brake Force ◽  
Antilock Braking ◽  
Brake Force Distribution

Antilock braking system (ABS) is a standard equipment for passenger car, it can prevent automobile wheels from locking-up and improve braking performance. Electronic brake force distribution (EBD) can prevent the rear wheels from locking prior to the front wheels, it can automatically adjust the braking force distribution scale among the wheels. In this paper, a vehicle model and tire model are developed, a sliding mode controller is designed for ABS system and a fuzzy controller is designed for EBD system. Dry asphalt road and wet asphalt road are used to simulate the performance of ABS/EBD system. The simulation results show that the control method can make full use of the respective advantages of ABS and EBD systems.

Collaborative control of a dual electro-hydraulic regenerative brake system for a rear-wheel-drive electric vehicle

2018 ◽  
Vol 233 (4) ◽  
pp. 1035-1046 ◽  
Author(s):  
Jonathan Nadeau ◽  
Philippe Micheau ◽  
Maxime Boisvert
Keyword(s):  
Electric Vehicle ◽  
Energy Recovery ◽  
Rear Wheel ◽  
Brake System ◽  
Force Distribution ◽  
Hydraulic Brake ◽  
Brake Pressure ◽  
Wheel Drive ◽  
Brake Force ◽  
Brake Force Distribution

Within the field of electric vehicles, the cooperative control of a dual electro-hydraulic regenerative brake system using the foot brake pedal as the sole input of driver brake requests is a challenging control problem, especially when the electro-hydraulic brake system features on/off solenoid valves which are widely used in the automotive industry. This type of hydraulic actuator is hard to use to perform a fine brake pressure regulation. Thus, this paper focuses on the implementation of a novel controller design for a dual electro-hydraulic regenerative brake system featuring on/off solenoid valves which track an “ideal” brake force distribution. As an improvement to a standard brake force distribution, it can provide the reach of the maximum braking adherence and can improve the energy recovery of a rear-wheel-drive electric vehicle. This improvement in energy recovery is possible with the complete substitution of the rear hydraulic brake force with a regenerative brake force until the reach of the electric powertrain constraints. It is done by performing a proper brake pressure fine regulation through the proposed variable structure control of the on/off solenoid valves provided by the hydraulic platform of the vehicle stability system. Through road tests, the tracking feasibility of the proposed brake force distribution with the mechatronic system developed is validated.

Sign in / Sign up

Export Citation Format

Share Document