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:
Feb. 05, 1985
Filed:
Sep. 22, 1983
Saeid M Razavi, St. Paul, MN (US);
Electro-Craft Corporation, Hopkins, MN (US);
Abstract
A motor compensation network for use with a two-degree of freedom velocity servo controller includes first and second compensation means. The first compensation means receives a signal representing a difference between a velocity command signal and a velocity feedback signal and provides a modified output signal. The second compensation means receives the velocity feedback signal and provides a modified output signal. Bandwidth adjustment means are coupled to the first and second compensation means. Damping factor adjustment means are coupled to the second compensation means. The transfer function of the first compensation means has characteristics of an integrator. The transfer function of the second compensation means has a first and a second component. The first component has characteristics of a differentiator, while the second component has characteristics of a proportionality or a gain constant. The bandwidth adjustment means varies the gain or scale factor of the integrator of the first compensation means and the gain or scale factor of the differentiator of the second compensation means according to a predetermined relationship. The damping factor adjustment means varies the gain of the proportionality constant of the second compensation means. The gain of the differentiator is maintained equal to a reciprocal of the gain of the integrator as bandwidth is adjusted, thereby keeping the bandwidth adjustment and damping factor adjustments independent from one another.