Difference measurement method for MEMS gyroscopes
A differential measurement, gyroscope technology, applied in the gyro effect for speed measurement, measuring device, speed/acceleration/shock measurement, etc.
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[0087] The MEMS gyroscope in the first embodiment of the present invention takes the silicon MEMS gyroscope CRS03 as an example.
[0088] First, take a batch of silicon MEMS gyroscopes CRS03, 20 in this embodiment, and conduct test experiments according to the commonly used gyroscope test standards. Test and calibrate each important parameter of MEMS gyroscope, including various deterministic error items and their coefficients, usually including zero bias, zero bias stability, zero bias repeatability, scale factor, scale factor asymmetry, scale Factor repeatability, maximum input angular velocity, threshold, resolution, random walk coefficient, input axis misalignment angle, frequency bandwidth and other parameters.
[0089] Secondly, divide this batch of MEMS gyroscopes CRS03 into two groups, 10 in each group. Turntable tests were performed using a uniaxial rate turntable. Fix the sensitive axis of one group of MEMS gyroscopes parallel to the rotation axis of the turntable ...
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