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Time-varying factors are extremely important in both dual-axis servo turntable and Electrostatically Supported Gyro (ESG) by affecting the testing of ESG's drift model. In this paper, we model four time-varying factors, gyro case mis-alignment angle, installation error between gyro and inner ring platform, turntable base fluctuation, and null position drift of turntable's angle sensor, as a polynomial...
Case rotational auto-compensation is an effective technique to enhance the accuracy of Electrostatically Supported Gyro (ESG). However, the usage of such technique will introduce additional case rotational signal in the measured readout when ESG is tested on servo turntable. To accurately identify the constant and random drift coefficients of ESG, it is necessary to smooth the measured readout by...
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