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:
Apr. 26, 2022
Filed:
Dec. 16, 2016
Trw Limited, Solihull, GB;
Trw Automotive Us Llc, Livonia, MI (US);
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Christopher David Dixon, Coventry, GB;
Connel Brett Williams, Leamington Spa, GB;
Prerit Terway, Rochester Hills, MI (US);
Abraham Ghafari, Rochester Hills, MI (US);
Hassan Lamsahel, Friedrichshafen, DE;
Mesut Er, Friedrichshafen, DE;
ZF Active Safety and Electronics US LLC, Livonia, MI (US);
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A control system for an electric motor comprises a controller which receives as an input a demanded motor current and produces at an output an intermediate voltage demand signal, a voltage demand signal correction means arranged to generate a voltage demand correction signal, and a combining means arranged to combine the intermediate voltage demand signal and the voltage demand correction signal to produce an actual voltage demand signal that is applied to the motor by pulse width modulation of the switches of a motor bridge driver. The correction signal compensates for unwanted non-linearities caused by interlock delays in the switching of the motor bridge switches.