Control device, rotation rate sensor and method of operating a control device with harmonic set point signal
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United States of America Patent
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Dec 13, 2016
Grant Date -
Jul 30, 2015
app pub date -
Oct 15, 2012
filing date -
Dec 1, 2011
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Abstract
A control device comprises a sensor unit, which outputs a measurement signal, which reflects a deviation of an oscillator along a direction of excitation. A controller main unit derives a control signal for an actuator unit from the measurement signal and a harmonic set point signal such that the actuator unit counteracts a deviation of the deflection of the oscillator from a set amplitude of a harmonic resonance oscillation. A controller extension unit estimates actual-phase and actual-amplitude of a residual oscillation of the oscillator and synchronizes the harmonic set point signal with the residual oscillation at a deactivated actuator unit. The residual energy contained in the residual oscillation is used, in order to arrive faster at a defined operation state of the oscillator.
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