Condition Monitoring of Rail Vehicle Suspension System by Model-Based Assessment

  • Liu, X. (Speaker)
  • Stefano Bruni (Speaker)

Activity: Talk or presentation typesOral presentation


One simple model-based condition monitoring approach for the rail vehicle suspension system is proposed in this paper. This method is based on recursive least-square (RLS) algorithm regarding a deterministic model. RLS is able to identify the unknown parameters of an ‘input-output’ system by using the correlation properties of variables. In a vehicle dynamic system, the identification of suspension parameter is achieved by utilizing the relationship between the excitation and response. One fault detection method for the vertical suspension system is discussed as an example of this condition monitoring scheme. In order to validate the feasibility of this approach, simulation results from the vehicle dynamics software ‘ADTreS’ are employed as ‘virtual measurements’ considering a trailer car of Italian ETR500 high-speed train. The identification results indicate that the suspension parameter estimates are consistent with the reference values, thereby supporting this fault diagnosis technique to be applied in the future vehicle-based condition monitoring system.
Period11 Jul 2017
Event titleFirst International Conference on Rail Transportation
Event typeConference
Conference number1
LocationChengdu, ChinaShow on map
Degree of RecognitionInternational