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. 04, 2023
Filed:
Apr. 09, 2019
Moving Magnet Technologies, Besançon, FR;
Geoffroy Petrement, Besancon, FR;
Guillaume Callerant, Chavannes-sur-l'Etang, FR;
Moving Magnet Technologies, Besancon, FR;
Abstract
A method for controlling a polyphase actuator includes supplying each phase with a periodically varying voltage having a periodic sequence of steps Pthat have a constant duration and an amplitude A, where n corresponds to the rank of the phase and i to the rank of the step. The method further includes determining a target position PCof a rotor of the actuator, in order to define a sinusoidal voltage envelope. The actuator further includes a movable member, a stator equipped with electrical coils and a sensor detecting the mechanical position of the movable member with respect to the stator, as well as a microcontroller. The microcontroller determines, at times T, a mechanical position of a mechanical member, the microcontroller calculates, at each of the times T, a difference between the mechanical position and a target position PCcorresponding to the step Pand the microcontroller calculates a coefficient k as a function of the difference. The microcontroller also weights the amplitude of a power supply applied to the phases by a coefficient k in order to supply the phases with weighted amplitude voltages A*k.