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. 31, 1993
Filed:
Oct. 01, 1992
Applicant:
Inventors:
Franco Salerno, Alpignano, IT;
Pietro De Filippis, Milan, IT;
Assignee:
Industrie Magneti Marelli, Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318254 ; 318138 ;
Abstract
The circuit comprises synchronisation devices operable to provide, for a motor having n phases, n square wave control signals phase displaced from one another by 360/n electrical degrees, with a frequency proportional to the speed of the rotor of the motor, and linear feedback pilot circuit devices operable to provide at their output, cyclically to each of the power transistors, which pilot the phases, a respective pilot signal variable as a function of a reference signal and the voltage on the corresponding phases of the motor.