Abstract

This paper presents a computer-aided engineering (CAE) environment for input/output characterization of highly nonlinear systems. The approach is based on obtaining the sinusoidal-input describing function (SIDF) models of the nonlinear plant. These models are obtained by exciting the plant with a sinusoid of known amplitude and frequency, integrating the dynamic equations of motion to obtain system output, and finally evaluating Fourier integrals when system output is at steady-state. A software utility based on this technique is developed and outlined. The software is written in standard FORmula TRANslation (FORTRAN) 77, and it is developed on a Harris-800 super-minicomputer and a Tektronix 4115B high resolution, raster, and color graphics terminal. At present, the characterization approach and the associated software is limited to single-input single-output, nonlinear, time-invariant, deterministic, and stable systems.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.