Open AccessBuilt-In Test Equipment (BITE) on the Garrett Model GTCP331 APU Digital Electronic Control Unit
Author(s) -
Stephen R. LaCroix,
Richard Stokes
Publication year - 1983
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1115/83-gt-186
Subject(s) - troubleshooting , control (management) , test (biology) , control unit , digital control , microprocessor , unit (ring theory) , engineering , computer science , reliability engineering , electrical engineering , operating system , artificial intelligence , paleontology , mathematics education , mathematics , biology
The advent of digital microprocessor electronic controls with decision making capabilities and airline interest in improved maintenance has resulted in the incorporation of powerful Built-In-Test-Equipment (BITE) in the latest Garrett gas turbine auxiliary power unit electronic control. BITE has been designed into the control to help isolate defective components and display this information. Garrett historical background and troubleshooting experience was combined with that of the Boeing Company, Messerschimitt-Bolkow-Blohm (MMB), and United Airlines (UAL) to obtain an effective system. Discussion includes BITE design philosophy, how the system functions, and how the information is displayed.