Author:
Liu Haichao,Wei Lingtao,Liu Hongqi,Wu Jinjun,Li Liang
Abstract
The integrated braking control system (IBC) has become one of the most popular brake-by-wire (BBW) solutions due to its compactness and versatility. Accurate monitoring of wheel cylinder pressure in real time is the basis for brake pressure control, and pressure estimation is a low-cost and reliable method. However, the IBC is an electromechanical hydraulic coupling system that has significant nonlinear behaviors; moreover, vehicle dynamics also have a critical impact on the accuracy of pressure estimation. To solve this problem, this paper proposes a novel adaptive extended Kalman filter (EKF) approach that combines a hydraulic model and a single-wheel model. This novel strategy has better estimation than the hydraulic model when the pressure is accurately estimated by the single-wheel model, while when the single-wheel model is not accurate, the EKF degrades to the hydraulic model. Finally, vehicle experimental data under high- and low-mu braking are collected. The pressure estimation error of the EKF is within 0.4 MPa in the low-mu road and 2 MPa in the high-mu road. It is proven that the proposed pressure estimation strategy is highly effective.
Subject
Control and Optimization,Control and Systems Engineering
Reference28 articles.
1. Optimization of Hydraulic Pressure Control System of Integrated Electro-Hydraulic Brake System Based on Chatter-Compensation;Chin. J. Mech. Eng.,2016
2. Technologies of control-by-wire and dynamic domain control for automotive chassis;J. Automot. Saf. Energy,2020
3. Yang, X., Li, J., Miao, H., and Shi, Z.T. (2017, January 24–27). Hydraulic Pressure Control and Parameter Optimization of Integrated Electro-Hydraulic Brake System. Proceedings of the 35th of SAE 2017 Brake Colloquium, Orlando, FL, USA.
4. Li, J., Yang, X., Miao, H., and Shi, Z.T. (2016, January 21–23). Co-simulation research of integrated electro-hydraulic braking system. Proceedings of the SAE 2016 World Congress, Detroit, MI, USA.
5. Nonlinear pressure control for BBW systems via dead-zone and antiwindup compensation;IEEE Trans. Control Syst. Technol.,2015
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献