Test signal generator flutter FOR TEST AIRCRAFT

摘要

The invention relates to the field of research and flight test aircraft, namely, to the means of excitation of the aircraft structure elements of aircraft in flight flutter tests. Test signal generator comprises a microcontroller; connected to the microcontroller port with a USB interface, remote control, the source of the test signal, digital-to-analog converter; lowpass filter. As a source of the test signal is used the nonvolatile memory with the pre-flight program with excitation signals and control signals, provides a signal to generate a randomly varying frequency, shape, amplitude and duration corresponding to the type of test on the aircraft flutter and type of tests, the controller is configured with only two button setup operator number of the flight program and run the program to ensure the minimization of pilot actions or operator Processes test. Additionally introduced scaling amplifier for any change in the amplitude signal in accordance with the flight program associated with the microcontroller, digital-to-analog converter and a low pass filter, to set different levels of signal restriction stopper for the respective aircraft types and to prevent emergency situations by automatically disconnecting the generator when an malfunction associated with the microcontroller and low-pass filter, and associated digital-Conversion ovatelem former single commands, the outputs of which are the outputs of single generator of commands applied to the inputs enable the control surfaces of complex aircraft control system (CCS), which provides a generator docking with KSU and flight safety by eliminating the influence of pilot error or operator occur during manual closing of participating in excitation control surfaces. The technical result to achieve is directed proposed model, it is to increase opportunities for the experimenter when preparing flutter experiment by using any signal excitation oscillation control aircraft surfaces, to simplify the control system of excitation by minimizing pilot manipulations in preparation and conduct flutter experiment by using preformed excitation flight program and automatic tracking generated with ignalom in order to reduce flutter tests, increasing the accuracy of processing the experimental results, reducing the probability of erroneous actions of the pilot and increase safety during flutter experiment.