Open-loop start-up method for a resonating device

Details Open-loop start-up method for a resonating device Open-loop start-up method for a resonating device

2007-03-13

2007-03-13

Chang, Joseph (Department: 2817)

Oscillators

Electromechanical resonator

With optical, piezoelectric or acoustic coupling means

C331S1160FE, C331S154000, C073S514320

Reexamination Certificate

active

10855204

ABSTRACT:
A system employing a resonating device and a controller implements a method involving an establishment by the controller of open-loop oscillations of the resonating device at a resonating frequency of the resonating device, and an establishment by the controller of closed-loop oscillations of the resonating device based on the open-loop oscillations of the resonating device at the resonating frequency. To this end, the controller controls an application and a tuning of a first open-loop drive signal to the resonating device based on a design-drive standard resonating frequency range whereby the controller can measure and designate a frequency of a resonating output signal from the resonating device as a calibration resonant frequency, and controls an application and a tuning of a second open-loop drive signal to the resonating device based on the calibration resonant frequency whereby the controller can subsequently apply a closed-loop drive signal to the resonating device.

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patent: WO 02/10678 (2002-02-01), None
patent: WO 02/087083 (2002-10-01), None

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