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Actuator-to-Vehicle Joint Estimation of Clamping Force for Sensorless Control of the Electro-Mechanical Brake System School of Automotive Studies, Tongji University
- Format:
- Book
- Conference/Event
- Author/Creator:
- Xing, Yipu, author.
- Conference Name:
- Brake Colloquium & Exhibition - 43rd Annual (2025-09-21 : Grand Rapids, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2025
- Summary:
- The electro-mechanical brake (EMB) is a promising brake actuating system for electrified vehicle. To enhance the system function safety while saving space from redundancy sensors, this paper studied sensorless climbing force control for the EMB where a new climbing force estimator is proposed by fusing the information from vehicle dynamics and EMB states. The work was done with three contributions: 1) The priori clamping force characteristics were implemented to build the estimator with two parallel models, one of which was derived from the actuator rigid-body dynamics while the other was derived from vehicle longitudinal dynamics model; 2) a proportional-integral (PI) observer utilizing wheel speed residual signals was developed to correct the initial estimates iteratively; 3) a fuzzy control controller was proposed to optimize the key parameters of the PI observer. Comparative study was conducted on a co-simulation platform and the results showed that the actuator-to-vehicle joint estimation method can reduce more than 28% root mean square error (RMSE) compared with the conventional actuator model-based estimation method by utilizing PI observer. After the optimization of key parameters, the optimal ratio can reach 32%. Robustness analysis demonstrated that the climbing force estimations accuracy across the studied distinct braking scenarios were consistency
- Notes:
- Vendor supplied data
- Publisher Number:
- 2025-01-0338
- Access Restriction:
- Restricted for use by site license
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