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Control of Electro-Hydraulic Shaker by Digital Iteration Techniques
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English
Abstract
The paper presents the results of a feasibility and conceptual study for on-line transient waveform control of nonlinear electrohydraulic test systems. The control concept is based on digital computing algorithms and the reciprocal properties of the fast Fourier transform used in the time-invariant vibratory system approach. In order to reproduce a specified time history at the test specimen, digital iteration techniques, which compensate the frequency coupling and the effects of nonlinearities on the electrical and mechanical components of the vibratory system, were used to define the test system transfer function. Successful control of prototype test systems are presented and discussed.
Authors
Citation
Kao, G. and Chang, K., "Control of Electro-Hydraulic Shaker by Digital Iteration Techniques," SAE Technical Paper 720823, 1972, https://doi.org/10.4271/720823.Also In
References
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- Cooley J. W. Tukey J. W. “An Algorithm for the Machine Calculation of Complex Fourier Series.” Mathematics and Computation 19 90 1965 297 301
- Kunz K. S. “Numerical Analysis.” New York McGraw-Hill Book Co., Inc. 1957
- Hannan E. J. “Time Series Analysis.” New York John Wiley & Sons, Inc. 1960