Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지
DOI QR코드

DOI QR Code

System Identification of In-situ Vehicle Output Torque Measurement System

차량 출력 토크 측정 시스템의 시스템 식별

  • Kim, Gi-Woo (School of Automotive Engineering, Kyungpook National University)
  • 김기우 (경북대학교 자동차공학부)
  • Received : 2011.07.14
  • Accepted : 2011.08.26
  • Published : 2012.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a study on the system identification of the in-situ output shaft torque measurement system using a non-contacting magneto-elastic torque transducer installed in a vehicle drivline. The frequency response (transfer) function (FRF) analysis is conducted to interpret the dynamic interaction between the output shaft torque and road side excitation due to the road roughness. In order to identify the frequency response function of vehicle driveline system, two power spectral density (PSD) functions of two random signals: the road roughness profile synthesized from the road roughness index equation and the stationary noise torque extracted from the original torque signal, are first estimated. System identification results show that the output torque signal can be affected by the dynamic characteristics of vehicle driveline systems, as well as the road roughness.

Keywords

References

  1. Y. Shim, S. K. Kauh and K. P. Ha, "Evaluation of Idle Stability Through In-situ Torque Measurement in Automatic Transmission Vehicles," Int. J. Automotive Technology, Vol.12, No.3, pp.315-320, 2011. https://doi.org/10.1007/s12239-011-0037-5
  2. W. J. Fleming, "New automotive Sensors-A Review," IEEE Sensors Journal, Vol.8, No.11, pp.1900-1921, 2008. https://doi.org/10.1109/JSEN.2008.2006452
  3. I. J. Garshelis, J. A. Alexsonis, C. A. Jones and R. M. Rotay, "Development of a Magnetoelastic Torque Transducer for Automotive Transmission Applications," SAE 970605, 1997.
  4. Y. Fujii, R. Hogirala and T. Greene, "Magnetoelastic Torque Sensor for Automotive Transmissions," Proceedings of CTI Transmission Symposium, Ann Arbor, MI, 2010.
  5. G.-W. Kim, J. Kucharski, G. Pietron, D. Yanakiev, Y. Fujii and K. W. Wang, "Effect of Road Excitation on Driveline Output Torque Measurements," SAE 2011 Noise and Vibration Conference and Exhibition, Paper No.2011-01-15, 2011.
  6. A. Gonzalez, E. J. O'Brien, Y. Y. Li and K. Cashell, "The Use of Vehicle Acceleration Measurements to Estimate Road Roughness," Vehicle System Dynamics, Vol.46, No.6, pp.483-499, June, 2008. https://doi.org/10.1080/00423110701485050
  7. S. J. Kawale, Implication of Terrain Topology Modelling on Ground Vehicle Reliability, Master's Thesis, Virginia Polytechnic Institute and State University, 2011.
  8. ISO8608, Mechanical Vibration - Road Surface profiles-Reporting of Measured Data, International Standards Organization, 1995.
  9. J. S. Bendat and A. G. Piersol, Random Data: Analysis and Measurement Procedures, John Wiley, 3rd Edn., 2000.