Drive control device and drive control method that enable stable output to be obtained from vibration type actuator, vibration type drive device including vibration type actuator, and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 2023
Grant Date -
Jul 29, 2021
app pub date -
Apr 15, 2021
filing date -
Oct 15, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drive control device 100, which controls driving of a vibration type actuator 200 including a vibrator 214 that includes a piezoelectric element 203, and a rotor 207, includes amplifier circuits 11 and 12 amplifying a power supply voltage to generate a drive voltage to be applied to the piezoelectric element 203, and a microcomputer unit 1. The microcomputer unit 1 performs a control to increase the amplitude of the drive voltage to perform acceleration from when the vibration type actuator 200 is started to when a target speed of the rotor 207 is reached, decrease the frequency of the drive voltage without changing the amplitude of the drive voltage when power supplied to the piezoelectric element 203 exceeds a first power limit P-Lim1, and increase the amplitude of the drive voltage when the power falls below a second power limit P-Lim2 during an operation of decreasing the frequency.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2021 Application Filing Year
- H02N Class
- 325 Applications Filed
- 174 Patents Issued To-Date
- 53.54 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H02N Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
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| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 30, 2026 |
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