A Fuzzy Heater Control System Stimulating Thermal Cycling of Flight Hardware for a Thermal Environmental Test

Details A Fuzzy Heater Control System Stimulating Thermal Cycling of Flight Hardware for a Thermal Environmental Test A Fuzzy Heater Control System Stimulating Thermal Cycling of Flight Hardware for a Thermal Environmental Test

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.558..489c&link_type=abstract

Proceedings of the 5th International Symposium on Environmental Testing for Space Programmes Noordwijk, The Netherlands (ESA SP-

Mathematics

Logic

1

Scientific paper

The flight hardware suffers thermal cycling in space environment. The temperature range of the hardware is controlled between -45 C and 85 C for the space-flight test environment in a thermal vacuum chamber on ground. A Heater Control System (HCS) provides thirty heating points to simulate the thermal status of flight hardware. The control is configured in traditional PD algorithm and implemented in a workstation of a control room. Since the thermal mass is different for the different articles, the pre-determined parameters of PD control cannot fit all articles. The fuzzy logics are then proposed to be adaptive to the different articles. The fuzzy control is implemented with LabVIEW in a PXI industrial computer. The remote GPIB instruments of hibay are interfaced to PXI computer via Ethernet communication. In summary, the overall system takes advantages of GPIB standardized component, increasing capabilities, adaptive control with a fuzzy algorithm, and distributed control architecture.

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