NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A synthesis theory for self-oscillating adaptive systems /SOAS/A quantitative synthesis theory is presented for the Self-Oscillating Adaptive System (SOAS), whose nonlinear element has a static, odd character with hard saturation. The synthesis theory is based upon the quasilinear properties of the SOAS to forced inputs, which permits the extension of quantitative linear feedback theory to the SOAS. A reasonable definition of optimum design is shown to be the minimization of the limit cycle frequency. The great advantages of the SOAS is its zero sensitivity to pure gain changes. However, quasilinearity and control of the limit cycle amplitude at the system output, impose additional constraints which partially or completely cancel this advantage, depending on the numerical values of the design parameters. By means of narrow-band filtering, an additional factor is introduced which permits trade-off between filter complexity and limit cycle frequency minimization.
Document ID
19740062967
Document Type
Reprint (Version printed in journal)
Authors
Horowitz, I. (Weizmann Institute of Science, Rehovot Israel; Colorado, University Boulder, Colo., United States)
Smay, J. (Hughes Aircraft Co., Space and Communication Group, El Segundo Calif., United States)
Shapiro, A. (MBT /Israel Aircraft Industries, Ltd./ Lod Airport, Israel)
Date Acquired
August 7, 2013
Publication Date
July 1, 1974
Publication Information
Publication: Automatica
Volume: 10
Subject Category
ELECTRONICS
Funding Number(s)
CONTRACT_GRANT: NGR-06-003-083
CONTRACT_GRANT: AF-AFOSR-73-2549
CONTRACT_GRANT: NSF GK-33485
Distribution Limits
Public
Copyright
Other