Silent stick-slip piezo motor
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United States of America Patent
Stats
-
Feb 21, 2023
Grant Date -
Dec 24, 2020
app pub date -
Jun 22, 2019
filing date -
Jun 22, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A stick-slip piezo motor. At least one voltage source is connected to a piezo motor. The piezo motor has at least one oscillating piezo element and at least one moving friction element connected to the oscillating piezo element. The moving friction element moves in a desired travel direction. A computer is programmed to control the voltage source to deliver voltage to the piezo motor at a predetermined frequency and amplitude to control the speed of the piezo motor. The computer is programmed to hold the frequency constant while varying the amplitude to adjust the speed of the piezo motor. In a preferred embodiment the computer is programmed to hold the frequency constant at an ultrasonic frequency. In another preferred embodiment the computer is programmed to hold the frequency constant at a value of 15 kHz or higher.
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