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. 29, 2007
Filed:
Oct. 04, 2004
Eugenio Faggioli, Turin, IT;
Renato Zenzon, Orbassano, IT;
Eugenio Faggioli, Turin, IT;
Renato Zenzon, Orbassano, IT;
C.R.F. Societa Consortile per Azioni, Orbassano (Turin), IT;
Abstract
A control circuit that drives an electronic actuator. The control circuit includes a direct voltage source, a chopper circuit arranged between the source and an electric actuator, and an electronic control circuit designed to apply to the chopper circuit a command signal of the PWM type, with a predefined ON/OFF switching period and a predetermined duty cycle, for a predefined activation time, to produce a flow, within the electric actuator, of a correspondingly switched current having a nominal duration corresponding to the activation time. The control circuit detects the last whole or complete switching period included within the activation time, splits, in accordance with a predefined duty cycle, the final interval including the last complete switching period and any subsequent fraction of a switching period included within the activation time, and drives the chopper circuit in this final interval.