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:
Oct. 05, 1982
Filed:
Dec. 01, 1976
Applicant:
Inventor:
Edward F Burke, Jr, Reading, MA (US);
Assignee:
M.F.E. Corporation, Salem, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318331 ; 318616 ; 318617 ;
Abstract
A velocity-compensation circuit for a limited-displacement motor comprises a bridge circuit incorporating the control winding of the motor in a first arm. An adjacent bridge arm includes both an inductance and a resistance whose ratio is the same as that of the first bridge arm. The bridge is balanced to eliminate from its output the effect of current through the control winding. The bridge output in normal operation is therefore solely a function of motor velocity and this signal is fed back to provide velocity compensation for the motor.