DRIVING CIRCUIT DEVICE OF ULTRASONIC MOTOR
PROBLEM TO BE SOLVED: To solve the problem of a secondary side voltage fluctuation due to a pulse width and ET product of a primary side high frequency input voltage which cannot be controlled by a primary side control circuit in a driving circuit device of an ultrasonic motor.SOLUTION: The driving...
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| creator | MASUDA TSUTOMU HIROHASHI TORU SAKAMOTO MAMORU |
| description | PROBLEM TO BE SOLVED: To solve the problem of a secondary side voltage fluctuation due to a pulse width and ET product of a primary side high frequency input voltage which cannot be controlled by a primary side control circuit in a driving circuit device of an ultrasonic motor.SOLUTION: The driving circuit device of an ultrasonic motor includes an oscillating circuit which generates a signal having a reference frequency exciting a piezoelectric vibrator, a driving signal generating circuit which modulates a pulse width by the signal having the reference frequency and a detection signal, a driver circuit, a switching circuit, and a leakage transformer which power-amplifies a primary side controlled input voltage. A resonance circuit is composed, on the secondary side, of a leakage inductor Lk and a damping capacitance Co of the piezoelectric vibrator to form a driving voltage output circuit which excites the piezoelectric vibrator. |
| format | Patent |
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A resonance circuit is composed, on the secondary side, of a leakage inductor Lk and a damping capacitance Co of the piezoelectric vibrator to form a driving voltage output circuit which excites the piezoelectric vibrator.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR ELECTRICITY FOR PERFORMING MECHANICAL WORK IN GENERAL GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL GENERATION METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY PERFORMING OPERATIONS TRANSPORTING |
| title | DRIVING CIRCUIT DEVICE OF ULTRASONIC MOTOR |
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