Research On A Portable Integrated Test System For Aero Engine

As the heart of the aircraft, aero-engine is the power source of aircraft. The performance of engine will directly affect the safety, reliability and benefit of an airplane and is also an important reflection of the National Defense Science and Technology. Therefore, various parameters of engine must be detected regularly in order to avoid security risks and accidents. However, aero-engine system is very huge and complex. As the harsh environment of the engine working condition, it is impossible to evaluate all situations that may be encountered in the practical operation of engine system and it can’t help the maintenance staff for accurately analysis the states of the engine. Therefore, a portable integrated test equipment is necessary to satisfy the requirements of the field test.In this paper, the portable aero-engine integrated testing system is designed using CompactRIO 9068 embedded controller, which is developed by National Instrument Company and equipped with an integrated chassis embedded a high-performance reconfigurable I/O FPGA. Together with the 7 pieces of high precision data acquisition card, the hardware kernel part of the test system is established. This paper chooses appropriate aviation plug, communication bus, and power supply, etc.. The signal wiring and power supply circuit are designed to complete the chassis design of test system. The notebook computer is chosen as the host computer. LabVIEW FPGA is used to develop the FPGA module underlying the CompactRIO while implementing the control and management of data acquisition module. The LabVIEW RTOS are used to develop the Linux based real-time data acquisition and management module. The module is download into the CompactRIO for the purpose of the organization, collection and management the testing data besides the communication with the host-computer. Finally, LabVIEW are used to develop the host software in order to implement the real-time display, storage and review of the acquisition data. Finally, a completed set of portable online aero-engine test system is established.Experimental results show that this system has such advantages as high level automation, high integration, good stability, convention, strong ability of adapting to environment, expansion and low cost. It can response in real time and store various state parameters of engine and provide information for discovering the potential failure of the engine and diagnosing the fault early.