The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1995
Filed:
Jun. 23, 1993
Ira B Schwartz, Bethesda, MD (US);
Ioana Triandaf, Alexandria, VA (US);
Thomas L Carroll, Alexandria, VA (US);
Louis M Pecora, Alexandria, VA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A control system for tracking the operation of a nonlinear system has two parts: a tracking subsystem and a controlling subsystem. The tracking subsystem generates a parametric signal and the controlling subsystem controls and stabilizes the nonlinear system operating under operating conditions corresponding to that parametric signal. The controlling subsystem includes a modulator responsive to the parametric signal and to a feedback signal for producing and applying an input signal to the nonlinear system to cause the nonlinear system to produce an output signal. The controlling subsystem also includes means responsive to the output signal for producing the feedback signal. The controlling subsystem also includes correcting means, operable when the time average of the feedback signal is substantially nonzero, for bringing the time average of the feedback signal from a substantially nonzero value to a substantially zero value, and maintaining means, operable when the time average of the feedback signal is substantially zero, for maintaining the time average of the feedback signal over the selected period of time at a substantially zero value.