This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Software Allowing Interactive SERVO Design and Measurement with a Dual-Channel FFT Analyzer
Annotation ability available
Sector:
Language:
English
Abstract
Like in most technical disciplines, there seems to have been a gap in SERVO between the theoretical design and the reality of a system, as it can be measured.
This software is intended to bridge the gap: by allowing combination of measured data, transferred from a two channel FFT analyzer, with further calculation of the open-loop function, and synthesis of other elements in the forward path (like a phase compensator), it is possible to improve the results measured on a prototype until they fulfill the requirements.
Excitation signals available for measurement of a Frequency Response Function include Swept Sine, Random and Burst Random Noise, and impulse. Synthesis capabilities include pole, zero, integration, differentation, 2nd order system, phase lead and lag, and open and closed-loop calculation.
Authors
Citation
Collot, G., "A Software Allowing Interactive SERVO Design and Measurement with a Dual-Channel FFT Analyzer," SAE Technical Paper 870881, 1987, https://doi.org/10.4271/870881.Also In
References
- Herlufsen, H. “Dual Channel FFT Analysis” B & K Technical Review 1 & 2 1984
- Bendat, J.S. Piersol, G.G. “Engineering Applications of Correlation and Spectral Analysis” John Wiley & Sons N.Y., USA 1980
- Mitchell, L.D. “Improved Methods for the FFT Calculation of the Frequency Response Function” Journal of Mechanical Design April 1982
- Cawley, P. “The Reduction Bias Error in Transfer Function Estimates Using FFT Based Analyzers” MSA-Session, ASME Conference Dearborn, MI Sept. 1983
- Collot, G. “Servo Evaluation Using Dual Channel FFT Techniques” B & K Application Brief
- Hollingbery, P. “Practical Measurement Techniques for Servo and Control System Development” B & K Application Note