Abstract:
Aiming at the poor matching of the existing semi-trailer air suspension system, such as vehicle roll, airbag
leakage and airbag response time after single airbag failure, the semi-trailer electronic control air suspension
system is designed. The three-dimensional model and simulation model of semi-trailer electronic suspension
system are established by using Creo and Simulink simulation software. The existing air suspension electronic
control logic (ECAS), system layout and configuration are optimized to improve the turning stability, airbag
response speed, static air tightness and NVH of semi-trailer air suspension. Through Simulink and
ADAMS/car simulation analysis and vehicle carrying test, the simulation results and test data are analyzed,
and finally the closed-loop control logic with a supercharger is determined to adapt the novel control logic and
system layout. The simulation and test results show that when the air compressor opening time is 3.5 s, the
solenoid valve frequency is 22 kHz and the air pressure difference is 5.6 bar, the system response is the fastest
and the energy consumption is the lowest. |
