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. 01, 2019
Filed:
Mar. 27, 2018
Valeo Systèmes D'essuyage, Le Mesnil Saint Denis, FR;
Jose-Luis Herrada, Le Mesnil Saint Denis, FR;
Valeo Systèmes d'Essuyage, Le Mesnil Saint Denis, FR;
Abstract
A brushless direct current electric motor for a wiping system. The brushless direct current electric motor includes a rotor, a stator, a Hall effect sensor to detect control magnet angular position of the rotor, and a control unit to determine rotor angular positions in relation to the stator from the signals Hall effect sensor signals and to generate control signals to electromagnetic excitation coils of the rotor as a function of the determined angular position of the rotor. The control unit includes a clock configured to: estimate the angular position of the rotor at predetermined instants lying between two changes of state of the Hall effect sensor, determine values of the control voltages associated with the angular positions of the rotor estimated for the predetermined instants, and generate a substantially sinusoidal control signal from the determined voltage values.