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:
Dec. 24, 2019
Filed:
Dec. 18, 2017
Continental Automotive France, Toulouse, FR;
Continental Automotive Gmbh, Hannover, DE;
Angelo Pasqualetto, Toulouse, FR;
Continental Automotive France, Toulouse, FR;
Continental Automotive GmbH, Hannover, DE;
Abstract
A method for detecting a reverse current in a switching structure supplying power to an inductive load, having at least one switch and linked to an electric power source and to a ground for a control phase in which the current from the source supplies power to the load in accordance with a given duty cycle and a freewheeling phase in which the induced current from the load is decreasing, the reverse current being liable to be created during a freewheeling phase following a high duty cycle in a previous control phase creating a counter-electromotive force (cemf). The cemf is approximated proportionally to the integration of the duty cycle (integ[Dut cycl]) as a function of time (t), the reverse current either being calculated as a function of the estimated cemf or a reversal of the current criterion being established.