Test Equipment Development Of Integrated Instrument For Civil Aircraft Engine

As China's growing civil aviation market, civil aircraft rapid increases, so aircraft engine becomes increasingly complex, be monitored by several to dozens of parameters. Both require maintenance inspection, air testing equipment is therefore essential for aircraft ground support equipment, which provides aircraft maintenance or attachment means to the instrument.Modern aircraft engines are equipped with comprehensive instrumentation engine, it is the work of real-time acquisition state of aircraft engines, by the previous separation of instruments can not meet the modern aircraft engine performance monitoring requirements. The comprehensive instrument of foreign corresponding engine test equipment, high cost, so we need to develop and design our own test equipment.In this dissertation, for an integrated instrument for civil aircraft engine test equipment, through the system function indices were analyzed by the test equipment design. System uses the bus approach and modular design, with strong versatility and scalability. Under this scheme, is proposed based on the engine temperature cold junction compensation EGT exhaust gas temperature to achieve high-precision analog method; of the high-resolution, high-precision engine speed N1, N2 signal simulation and calibration techniques; discusses bus-based aviation technology for communication with the combination of instruments embedded control technology; Proposed design method of analog fuel flow module. Give a detailed theory, Hardware design ideas and Software design process.The results show that the test equipment in the man-machine interface, precision and reliability and real-time systems in terms of both achieved the intended design requirements.