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US 2003/0111933 A1Published application
Method and apparatus for exciting a piezoelectric material
AssigneeCaterpillar Inc.
InventorChristopher F. Gallmeyer
Life of this patent
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Abstract
Apparatus and methods for exciting a piezoelectric device. A control device receives a first control signal excites the piezoelectric device at about at least one predetermined electrical resonant frequency of the piezoelectric device as a function of the first control signal.
Claims26
An apparatus for exciting a piezoelectric device, comprising:
- a control device operable to receive a first control signal and to excite the piezoelectric device at about at least one predetermined electrical resonant frequency of the piezoelectric device as a function of the first control signal.
A method for exciting a piezoelectric device, comprising:
- determining a first condition;
- and
- exciting the piezoelectric device at about at least one predetermined electrical resonant frequency of the piezoelectric device as a function of the first condition.
A method for exciting a piezoelectric device, comprising:
- receiving at least one of a first excitation signal indicative of a desired excitation of the piezoelectric device and a temperature signal indicative of a temperature of the piezoelectric device;
- and
- exciting the piezoelectric device at about at least one predetermined electrical resonant frequency of the piezoelectric device as a function of at least one of the first excitation signal and the temperature signal.
A method for exciting a piezoelectric device, comprising:
- receiving an excitation signal indicative of a desired excitation of the piezoelectric device;
- determining a first value indicative of a temperature of the piezoelectric device;
- and
- exciting the piezoelectric device at about at least one predetermined electrical resonant frequency of the piezoelectric device as a function of the excitation signal and the first value.
1 more element
Dependencies are inferred from the claim text.