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:
May. 21, 2019
Filed:
May. 16, 2014
Raytheon Company, Waltham, MA (US);
Lawrence E. Savage, II, Murphy, TX (US);
Patrick J. Sigler, McKinney, TX (US);
James Robarge, Allen, TX (US);
Gary R. Herrington, Rowlett, TX (US);
Mark Gohlke, Van Alstyne, TX (US);
Steven Palomino, McKinney, TX (US);
Raytheon Company, Waltham, MA (US);
Abstract
A system includes a plurality of actuators configured to provide forces to an actuatable member to actuate the member between a first position and a second position during an actuation mode. The actuators are also configured to return the member from the second position to the first position during a retrace mode. The system also includes a controller configured to control the actuators. The controller is configured to identify a back electromotive force (BEMF) of each of the actuators during the retrace mode. The controller is also configured to responsively provide control signals to drive the actuators such that the forces provided by the actuators to the member during the actuation mode are substantially equal.