Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Error sensitivity analysis of the turntable gyro flywheel calibration system
| DOI: | 10.11809/bqzbgcxb2023.01.025 |
| Keywords: | gyrowheel; turntable; multi position calibration; error propagation; error sensitivity |
| Abstract: | A gyrowheel is an innovative attitude control and determination instrument for micro and small spacecrafts. Conducting multi position calibration tests through a turntable is a main way to improve its measurement performance. In an effort to ensure the calibration accuracy, the influences of various error factors are comprehensively analyzed from the calibration principle of gyrowheels and the source of calibration errors, including positioning error, wobble error, orthogonality error, intersection error, and installation error between the turntable and the gyrowheel. Taking into account the interaction of these error factors, the error propagation model of the calibration system is established based on the multi body theory. Then, the global error sensitivity analysis is conducted by utilizing Sobol’s method, and the key error tracing is realized through a quantitative description of the degree of influence of all error factors on the calibration data. The analysis results contribute to a theoretical basis for the determination of the key error indices and the optimal design of the calibration tests. |
| Published: | 2023-01-28 |
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