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:
Nov. 06, 2007
Filed:
Apr. 02, 2004
Jim Vogeley, Yorktown, VA (US);
Jim Blount, Newport News, VA (US);
Sanford Jones, Virginia Beach, VA (US);
Jim Vogeley, Yorktown, VA (US);
Jim Blount, Newport News, VA (US);
Sanford Jones, Virginia Beach, VA (US);
AdaptivEnergy LLC, Hampton, VA (US);
Abstract
A drive circuit () produces a drive signal having a waveform of a predetermined waveform shape for a device () having a piezoelectric actuator (). The drive circuit () includes a memory () which stores waveform shape data which is utilized by the drive circuit in producing the drive signal. The drive circuit utilizes the waveform shape data so that, for each of plural points comprising a period of the waveform, the drive signal has an appropriate amplitude for the predetermined waveform shape. The waveform shape data has preferably been prepared to optimize one or more operational parameter(s) of the device. Preferably the waveform shape data has been prepared by solving a waveform equation, the waveform equation having coefficients determined to optimize at least one operational parameter of the device.