Stability Analysis of Combined Braking System of Tractor-Semitrailer Based on Phase-Plane Method

An analysis method for the stability of combined braking system of tractor-semitrailer based on phase-plane is investigated. Based on a 9 degree of freedom model, considering longitudinal load transfer, nonlinear model of tire and other factors, the braking stability of tractor-semitrailer is analyz...

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Bibliographic Details
Published in:SAE International journal of commercial vehicles 2018-06, Vol.11 (2), p.151-160, Article 02-11-02-0012
Main Authors: He, Ren, Jing, Zhecheng, Shen, Xiaomin
Format: Article
Language:English
Subjects:
Analysis
Brakes
Combined braking system
Design and construction
Equipment and supplies
Farm trailers
Measurement
Mechanical properties
Methods
Phase-plane method
Stability
Stability (Physics)
Tractor-semitrailer
Tractors
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Summary:An analysis method for the stability of combined braking system of tractor-semitrailer based on phase-plane is investigated. Based on a 9 degree of freedom model, considering longitudinal load transfer, nonlinear model of tire and other factors, the braking stability of tractor-semitrailer is analyzed graphically on the phase plane. The stability of both tractor and semitrailer with different retarder gear is validated with the energy plane, β plane, yaw angle plane and hinged angle plane. The result indicates that in the long downhill with curve condition, both tractor and semitrailer show good stability when retarder is working at 1st and 2nd gear, and when it is at 3rd gear, the tractor is close to be unstable while semitrailer is unstable already. Besides, tractor and semitrailer both lose stability when retarder is working at the 4th gear.
ISSN:1946-391X
1946-3928
1946-3928
DOI:10.4271/02-11-02-0012