Driving device and driving system

Details Driving device and driving system Driving device and driving system

2006-07-26

2009-10-27

Budd, Mark (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S316020, C310S323020

Reexamination Certificate

active

07608979

ABSTRACT:
Drive technology is provided which makes suitable low velocity driving and smooth changing of driving velocity possible and achieves reduced power consumption. In the driving device, the drive unit is driven which engages with drive shaft which moves back and forth in tandem with extension and contraction of the piezoelectric element. In this driving device, when the output cycle for cycle Te is repeated such that the voltages applied to the piezoelectric element11are the maximum value (+Vp), the minimum value (−Vp), and the middle value (0V), the movement velocity of the drive unit13can be changed by thinning the output cycle at cycle Tf. As a result, suitable low velocity driving can be carried out and power consumption can be reduced in the drive unit.

REFERENCES:
patent: 6803699 (2004-10-01), Yuasa et al.
patent: 7190104 (2007-03-01), Yuasa
patent: 7271522 (2007-09-01), Yuasa et al.
patent: 2004-80964 (2004-03-01), None

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