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Gyro bias

May 21, 2019

The zero bias refers to the output of the gyroscope in the zero input state, which is expressed by the equivalent value of the output of the longer time output as the input angular rate, that is, the degree of dispersion of the observed value around the zero offset, for example, 0.005 degree/sec means The second will float 0.005 degree. The long-term steady-state output in the zero-input state is a stationary stochastic process, that is, the steady-state output will revolve around the mean (zero-bias) fluctuations and fluctuations, which is customarily expressed by the mean square error, which is defined as a zero-bias stability. The initial zero offset error can be understood as a static error, it does not fluctuate over time, and software calibration can be used.