The investigation of open loop performance of electro-pneumatic control actuator system with air intake Hava alıklı elektro-pnömatik kontrol tahrik sisteminin açık çevrim performansının incelenmesi

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Ercis O. F., KELEŞ Ö.

Journal of the Faculty of Engineering and Architecture of Gazi University, vol.39, no.4, pp.2329-2342, 2024 (SCI-Expanded) identifier


In this study, an electro-pneumatic control actuator system is simulated and its open loop performance is evaluated with tests. In the open loop electro-pneumatic system, the gas entering from the air intake is filled into two isolated chambers. The fin movement of the ammunition is provided by creating the pressure difference between the air chambers with the help of solenoids. The pressure difference created by the solenoids acts on a rotary vane and provides the rotation of the aerodynamic fins. Firstly, the step responses of simulation and tests are compared and it is seen that the results are close to each other. In frequency response test, the simulation and tests are conducted until 35 Hz. According to the responses, 90° phase difference is occurred at 7.15 Hz in the tests and at 8.33 Hz in the simulations. Besides, 5 Hz is chosen as target operating frequency in the simulation and test studies. The fin angle follows the command signal with a 63.9° phase difference at 5 Hz in Amesim simulations. In the tests, the fin also follows the command with 59.5° phase shift at the target frequency without losing the angle amplitude. In addition, the bandwidth of the system can be increased with increasing inlet mass flowrate. As a result, the performance of an inexpensive and simple electro-pneumatic control actuator system has been obtained through simulations and tests.