Title:
VIBRATION-TYPE DRIVE DEVICE, VIBRATION-TYPE ACTUATOR CONTROL DEVICE, AND EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2023/095545
Kind Code:
A1
Abstract:
A vibration-type drive device 10 comprises a vibration-type actuator 200 and a control device 100. The vibration-type actuator 200 has: a vibration body 210 that is obtained by bonding an elastic body 212 and a piezoelectric element 211; and a contact body 220 that contacts the elastic body 212. The control device 100 has: a drive unit 120 that has a transformer 1222 which converts an input signal into an AC voltage to be applied to the piezoelectric element 211; and a control unit 110 that controls the frequency, phase, and voltage of the input signal. If f1 is the frequency at which a primary-side current of the transformer 1222 is minimized, and fu is the resonance frequency of unwanted vibrations, the relationship of 0.79 ≤ f1/fu ≤ 1.21 is satisfied.
Inventors:
WATANABE TAKAYUKI (JP)
UEBAYASHI AKIRA (JP)
SUMIOKA JUN (JP)
UEBAYASHI AKIRA (JP)
SUMIOKA JUN (JP)
Application Number:
PCT/JP2022/040382
Publication Date:
June 01, 2023
Filing Date:
October 28, 2022
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
H02N2/06; G02B7/04; G03B17/56; G03G21/00; G03G21/16
Foreign References:
| JP2017041950A | 2017-02-23 |
Attorney, Agent or Firm:
ABE Takuma et al. (JP)
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