Measuring and testing – Speed – velocity – or acceleration – Vibration control or antistick means for reading structure
Patent
1995-01-10
1997-01-14
Williams, Hezron E.
Measuring and testing
Speed, velocity, or acceleration
Vibration control or antistick means for reading structure
7350412, 310316, G01P 904, H01L 4108
Patent
active
055941680
ABSTRACT:
A vibration control apparatus that can impart self-induced vibration by stabilizing the vibrator at a frequency in near agreement with its mechanical resonance frequency vibration f.sub.s is provided. A vibrator has a pair of piezo-electric elements on the side surface of vibration member having a resonance point. A drive apparatus has signal output terminal that outputs the drive signal of vibrator. First and second feedback amplifiers each have feedback input terminals. A third feedback amplifier has a feedback input terminal and a signal input terminal. The feedback input terminals of the first and second feedback amplifiers are connected to one electrode of each of the piezo-electric elements. The feedback input terminal of the third feedback amplifier is connected to the other electrodes of the pair of piezo-electric elements. The signal input terminal is connected to signal output terminal of drive apparatus. A signal based on the output signal of third feedback amplifier is fed back to the drive apparatus to impart self-induced vibration to the vibrator.
REFERENCES:
patent: 5197331 (1993-03-01), Oikawa
patent: 5270607 (1993-12-01), Terajima
patent: 5349857 (1994-09-01), Kasanami et al.
patent: 5434467 (1995-07-01), Abe et al.
Akai Electric Co.
Kwok Helen C.
Williams Hezron E.
LandOfFree
Vibration control apparatus having oscillation frequency regulat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vibration control apparatus having oscillation frequency regulat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibration control apparatus having oscillation frequency regulat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1389598