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:
May. 01, 1984
Filed:
Dec. 11, 1981
Applicant:
Inventor:
Hubert Song, Sunnyvale, CA (US);
Assignee:
Verbatim Corporation, Sunyvale, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318696 ; 318807 ;
Abstract
An optimum acceleration deceleration circuit for stepper motors wherein an error signal is fed to a rate limiter circuit which generates a speed output voltage. The speed output voltage is fed back to the rate limiter circuit through a non-linear gain amplifier and summing amps.