Piezoelectric driving device having a detection element at the center of a vibrating portion
Abstract:
A piezoelectric driving device includes a vibrating portion including a piezoelectric element for driving and a piezoelectric element for detection and vibrating by driving of the piezoelectric element for driving, a drive circuit that generates a drive signal for driving the piezoelectric element for driving, and a detection circuit that detects vibration of the vibrating portion based on a detection signal output from the piezoelectric element for detection with the vibration of the vibrating portion, wherein the piezoelectric element for detection is placed in an area containing a center of the vibrating portion.
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