Automated means to control the spacecraft assembly operations based on a strain-gauge sensor systems

Increased requirements are being submitted to quality in spacecraft manufacture. Deviations in the spacecraft characteristics from those calculated due to inaccuracies in parts manufacture or their assembly are critically impacting its performance. Precision in positioning the assembled product components is one of the quality indicators in the assembly process. The paper considers a diagram of a weighing installation to control position of the center of gravity points of components during the assembly process. A technique for such control is proposed based on introduction of the strain-gauge sensor system. Sample data from the analog strain-gauge signals were analyzed as part of the weighing platform. Hypotheses were tested on the form of the distribution law and significance of the correlation coefficients. Based on the results of testing such hypotheses, quality of the weighing installation design could be assessed. Results of the full-scale experiment were processed, and they confirmed the technique efficiency. Significance of difference between theoretical and experimental data was tested. Confidence intervals of the coordinates of the center of gravity point of the assembly object were estimated.

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