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Implementation of a Network Sensor Validation System for a Segmented Reflector Testbed

A large order flexible space structure, such as a segmented reflector space telescope, requires a high degree of precision and accuracy in order to maintain its nominal shape – the most critical aspect of forming clear images. The control of such a large complex multiple-input multiple-output (MIMO) system requires that its sensors be regularly checked against their calibration curves to detect deviations from the desired linear operating range. The Segmented Space Telescope Testbed at the Structures, Propulsion, and Control Engineering (SPACE) Laboratory at California State University, Los Angeles, utilizes a segmented primary mirror and a network of 42 sensors to mimic a parabolic mirror shape to high accuracy and precision. Regular validation of sensor linearity is crucial to system performance in order to achieve a high degree of precision. Individual verification of a larger number of sensors is both time consuming and prone to human error. Thus, a method for the rapid and autonomous validation of sensor linearity is being developed utilizing the Testbed’s shaping controller and LabVIEW virtual instruments (VI) for sensor monitoring and hand calibration verification.