High-speed Transient Parameters Of Aviation Flight Test System Developed

In the flight test of avionics systems, capturing the transient signal and analysis of their characteristic parameters become increasingly important. In the time domain, Continuous sampling and storage will inevitably produce vast amounts of data, which are difficult to deal with. However, the characteristic parameters of the signal can reflect the magnitude of signal fluctuation. Therefore, the calculation of the signal parameters can be used to analyze and determine whether the transients occurred.The main work of this thesis is:Firstly, the existing test technologies are studied, and a new PXA avionics test system is proposed for capturing the transient signal and analysis of their characteristic parameters.Secondly, the front circuits of the PXA avionics test system are designed, and their logic functions are implemented.Thirdly, the circuits of the parameter computing card are designed, and the parallel algorithm is studied and realized.Finally, the Airworthiness of PXA test system is proved, and the test system is used in the parameter testing of aircraft's power supply.