A coordinated control of hydraulic hub-motor auxiliary system for heavy truck

•A hydraulic hub-motor auxiliary system (HHMAS) is used in the traditional trucks.•Based on the HHMAS, a coordinated control algorithm is designed.•The designed pump displacement control method is real-time in real vehicle test.•HHMAS has a good effect on the control strategy presented in this paper...

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Bibliographic Details
Published in:Measurement : journal of the International Measurement Confederation 2021-04, Vol.175, p.109087, Article 109087
Main Authors: Song, D.F., Yang, D.P., Zeng, X.H., Zhang, X.M., Gao, F.W.
Format: Article
Language:English
Subjects:
Control methods
Control systems
Coordinated control strategy
Efficiency
Feedforward and feedback controller
Heavy duty trucks
Hydraulic hub-motor auxiliary system
Hydraulics
Pumps
Roads
Slip efficiency
Studies
Transmission efficiency
Truck drivers
Trucks
Variable pump
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Summary:•A hydraulic hub-motor auxiliary system (HHMAS) is used in the traditional trucks.•Based on the HHMAS, a coordinated control algorithm is designed.•The designed pump displacement control method is real-time in real vehicle test.•HHMAS has a good effect on the control strategy presented in this paper. To solve the contradiction between the trafficability and the power of traditional heavy trucks, the study proposes a coordinated control of hydraulic hub-motor auxiliary system for heavy truck to make full use of the coefficient of ground aadhesion and engine power. With hydraulic hub-motor auxiliary system (HHMAS) in the non-drive front wheels, the front wheels drive the truck on bad roads to ensure the trucks tractive capacity and exit on good roads to achieve better transmission efficiency. Based on the HHMAS, a wheel speed coordinated control strategy that considers slip efficiency to make system work effectively is designed. The pump displacement composite control method in the real vehicle is tested, the steady-state error is basically within 0.03. Experimental results show that HHMAS has a good effect on the control strategy presented. Hence, the study on HHMAS is a valuable to hydraulic hybrid application.
ISSN:0263-2241
1873-412X
DOI:10.1016/j.measurement.2021.109087