吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (2): 335-342.doi: 10.13229/j.cnki.jdxbgxb201402010

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Monitoring technology for vehicle loading status reflecting suspension vibration characteristics

LI Shi-wu, YAO Xue-ping, SUN Wen-cai, WANG Lin-hong, LAI Xiang-xiang, WANG De-qiang   

  1. College of Transportation, Jinlin University, Changchun 130022, China
  • Received:2012-12-20 Online:2014-02-01 Published:2014-02-01

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Abstract:

A two-degree of freedom 1/2 vehicle vibration model of axle suspension was built. Using random vibration theory, the differential equation of vehicle vibration was derived with the road roughness model as the input excitation. The vehicle suspension characteristics under different working condition were simulated and analyzed using Simulink software. Based on the analysis of the suspension characteristics, a suspension load monitoring device with overload protection function was designed, and a method to monitor the vehicle load status was proposed. Furthermore, a vehicle load status monitoring platform for FSAW truck was developed. The program of sensor signal processing and vehicle load identification was written. The system was tested by load status detecting trial and centre-of-mass position monitoring trial. The results show that the relative measurement error is less than 5%, and the horizontal centre-of-mass of the vehicle was positioned accurately. This research provides technical support for the real-time monitoring and warning of vehicle in-transit risk status.

Key words: engineering of communications and transportation, pavement roughness, suspension characteristics, loading status monitoring, empirical mode decomposition

CLC Number: 

  • U467.1

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