Transfer Case Clutch Modeling and EKF-UIO Based Torque Estimation Method for On-Demand 4WD Vehicles

On-demand four-wheel-drive vehicles have apparent advantages in power performance, stability, and manufacturing costs. The transfer case clutch is the core component of on-demand four-wheel-drive vehicles. The torque of the transfer case clutch is significant for control while not easy to measure or...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2023-01, Vol.72 (1), p.458-468
Main Authors: Huang, Changyao, Xu, Zhan, Xue, Zhongjin, Zhang, Zhihuang, Liu, Zhenyu, Wang, Xiangyu, Li, Liang
Format: Article
Language:English
Subjects:
Axles
Clutches
Extended Kalman filter
Force
Four wheel drive
Friction
Observers
Presses
Production costs
Shafts
Torque
torque estimation
transfer case clutch
unkown input observer
vehicle experiment
Vehicles
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Summary:On-demand four-wheel-drive vehicles have apparent advantages in power performance, stability, and manufacturing costs. The transfer case clutch is the core component of on-demand four-wheel-drive vehicles. The torque of the transfer case clutch is significant for control while not easy to measure or calculate. Thus, this aticle aims to estimate the transfer case clutch torque. First, this aticle constructs a model of transfer case clutch and vehicle model for simulation. Second, the system longitudinal model is established and an extended Kalman filter based unknown input observer is designed. Third, the effectiveness is validated by the simulation and vehicle experiments. The results show that the method has good performance compared to the friction-based method, and the accumulated relative error is less than 10%.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2022.3206216