Title:
超音波トランスデューサを駆動するシステム及び方法
Document Type and Number:
Japanese Patent JP5475793
Kind Code:
B2
Abstract:
A transducer is optimally driven at or near its resonant frequency by a driver system that adapts to variations and/or changes to the resonant frequency of the transducer due to variations in piezo materials, manufacturing, assembly, component tolerances, and/or operational conditions. The system may include an output controller, a phase track controller, a frequency generator, a drive, circuitry to determine a phase angle between the transducer voltage and transducer current, and circuitry to obtain transducer admittance from the transducer voltage and transducer current.
Inventors:
David Hoffman
Bull Baker, David
Bull Baker, David
Application Number:
JP2011533394A
Publication Date:
April 16, 2014
Filing Date:
October 23, 2009
Export Citation:
Assignee:
Versatile Power Inc.
International Classes:
H04R3/00
Domestic Patent References:
| JP2001212514A | ||||
| JP1305699A | ||||
| JP6343200A | ||||
| JP2008148288A | ||||
| JP2250410A | ||||
| JP2007049614A | ||||
| JP2008506527A | ||||
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| JP2007532285A | ||||
| JP5014997A | ||||
| JP2008155115A | ||||
| JP10150325A | ||||
| JP2003199333A | ||||
| JP2000315116A |
Attorney, Agent or Firm:
Ikeda adult
Kazuhiro Yamaguchi
Masakazu Noda
Kazuhiro Yamaguchi
Masakazu Noda