In order to improve the calibration accuracy of orthogonal dual accelerometers on low-precision indexing tables,a two-sequence integrated calibration method is designed to fuse the out-puts of the same accelerometer in the two sequences,and the least square method is used to sepa-rate the angular position errors of the indexing table from the errors of the accelerometer,which ultimately eliminates the effect of the angular position errors of the indexing table on the calibra-tion accuracy of the accelerometer.Experiments are designed and carried out on the±10"low-pre-cision indexing table,after data fusion of two-sequence outputs,the uncertainties of the error model coefficients of the dual accelerometers are within 10-6～10-7,which verifies that the cali-bration accuracy is improved by an order of magnitude compared with the conventional method without separating the angular position error.The method can be extended to and applied to the calibration of multiple accelerometers,which can simultaneously improve the calibration accuracy and efficiency of accelerometers on the indexing table.
维普
万方数据
