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:
Sep. 04, 2001
Filed:
May. 22, 2000
Christopher F. Gallmeyer, Peoria, IL (US);
Larry G. Waterfield, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A control system for controlling position and velocity of a piezoelectric device. The control system includes a position control circuit that is operable to receive a control signal corresponding to a desired position of the piezoelectric device, and to compare the control signal to an estimated position of the piezoelectric device. The position control circuit generates a position error control signal that is adapted to drive the piezoelectric device to the desired position. The control system may further include a velocity control circuit that is operable to receive the position error control signal and generate a control signal that is adapted to drive the piezoelectric device to the desired position and at the desired velocity according to a predetermined velocity profile.