This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Improved Methods for Digital Measurement of Torsional Vibration
Annotation ability available
Sector:
Language:
English
Abstract
An overview of analog and digital torsional vibration measurement methods is presented. Significant sources of digital measurement error are discussed in detail. Methods to minimize measurement errors are explored. A method to use multi-bit A/D data acquisition of a magnetic pickup signal to accurately measure tooth passing frequency with low sample rates is proposed. A frequency domain correction window is proposed which improves the frequency response of the standard digital demodulation technique. The proposed improvements enable accurate torsional vibration measurement with inexpensive A/D data acquisition equipment.
Recommended Content
Authors
Topic
Citation
Williams, J., "Improved Methods for Digital Measurement of Torsional Vibration," SAE Technical Paper 962204, 1996, https://doi.org/10.4271/962204.Also In
Issues in Commercial Vehicle Powertrain Design and Development
Number: SP-1203; Published: 1996-10-01
Number: SP-1203; Published: 1996-10-01
References
- Bruel and Kjaer Instruments Inc. Torsional Vibration Meter Type 2523 Instruction Manual Marlborough, MA 1991
- Seidlitz S. “Engine Torsional Transducer Comparison” SAE paper no. 920066 1992
- Morris J. E. Chen. T.C. “PLL sensing for engine diagnostics and control” SAE paper 850494 1985
- Rizzoni G. “A Passenger Vehicle On-Board Computer System for Engine Fault Diagnosis, Performance, Measurement and Control” Proc. Of 37 th IEEE Veh. Technol. Conf. 450 457 Tampa, FL June 1987
- Dong Y. Rizzoni G. Ribbens W. B. “Crankshaft Position Measurement with Application to Ignition Timing, Diagnostics and Performance Measurement” SAE paper 871914 SAE Passenger Car Meeting and Exposition Dearborn, MI Oct 12-19 1987
- Connolly F. Rizzoni G. Ribbens W. Dong W. Olin P. “An IBM PS/2 Based General Purpose Engine Analyzer” Proc. 40 th IEEE Veh. Tech. Conf. 128 134 Orlando, FL May 1990
- Williams J. “An Iterative Technique for Digital Measurement of Torsional Vibration” Int'l. Modal Analysis Conference XV Orlando FL Feb 3-6 1997