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:
Jul. 27, 2010
Filed:
Feb. 14, 2008
Alain Kirchhofer, Salon de Provence, FR;
Olivier Honnorat, Aix en Provence, FR;
Alain Kirchhofer, Salon de Provence, FR;
Olivier Honnorat, Aix en Provence, FR;
Eurocopter, Marignane, FR;
Abstract
The invention relates to an actuator () comprising a rotary electric motor () a screw Old) driven in rotation by the motor, a mechanical member () driven in translation by the screw, a first position sensor () sensitive to a position of the electric motor and/or of the screw, a second position sensor () sensitive to a position of the mechanical member, and a servo-control circuit (11) connected to both of the position sensors and to the motor, this circuit delivering a power supply signal to the motor that varies as a function of a position setpoint signal () and as a function of signals delivered by the two position sensors; the second position sensor presents a resolution that is at least equivalent to the resolution of the first position sensor, and the servo-control circuit includes redundant modules () for calculating the position of the mechanical member as a function of the signals/data delivered by the two sensors, together with at least two modules () for mutual surveillance of the results delivered by the calculation modules.