Angular acceleration sensing means based on oscillation

摘要

An angular acceleration sensing means to oscillation base has a vibrator (30), which contains a vibrating element, which is arranged in such a manner that it oscillates along a first direction, wherein said element further is arranged in such a way that it runs along a second direction perpendicular to the first direction, if it is of an angular acceleration and / or oscillation is exposed to along a third direction perpendicular to the first and second directions is. The vibrating element is for this purpose, along the first direction with a predetermined frequency to oscillate. A said vibration detector generates a voltage which, vibrations of the vibrating element along the reproduces the second direction. A first synchronous detector is detected in synchronism with a first frequency component of the vibration generated with the use of clock pulses of the previously determined frequency, in order to generate an output signal. A second synchronous detector detects an odd-numbered harmonic synchronously or even-numbered harmonic of the generated voltage with the use of clock pulses of the odd-numbered harmonic frequency. A remaining odd-numbered harmonic component, which in the output signal of the first synchronous detector, is eliminated with the detected odd-numbered harmonic.