A mathematical model of the mechanical subsystem of the trailer brake axle is described, which consists of a brake actuator, an application device and a drum brake. In the differential equation of motion, the total force from the mechanical subsystem reduced to the piston is described with a two-range linear-exponential model. The parameters of this model were determined using numerical identifi cation, based on experimental, quasi-static curves of pressure in the air brake chamber as a function of pushrod displacement. An example of use of the mechanical subsystem mathematical model to simulate the dynamics of a single-axle agricultural trailer's dual-line braking system with the Matlab- Simulink software is provided. The obtained results confi rmed that the developed model is useful for testing transient processes in the air braking systems of tractor and truck trailers. The proposed experimental force curve determination method can also be used in the diagnostics of brake adjustment.
Experimental and numerical studies of mechanical subsystem for simulation of agricultural trailer air braking systems
International Journal of Heavy Vehicle Systems (IJHVS) (Internet) ; 20 , 4 ; 289-311
2013
23 Seiten, 13 Bilder, 1 Tabelle, 40 Quellen
Aufsatz (Zeitschrift)
Englisch
The Braking of Agricultural Tractor/Trailer Combinations
NTIS | 1979
|The braking of agricultural tractor/trailer combination
Tema Archiv | 1979
|Braking Performance for Different Weight Ratios of Agricultural Tractor-Trailer Systems
British Library Conference Proceedings | 1990
|