Wind Tunnel Hardware-in-the-loop Simulation Techniques for Flight Control System Evaluation

In order to make up the shortages of traditional hardware-in-the-loop simulation (HILS) for flight control system (FCS) evaluation and farther reduce the risks of flight tests, wind tunnel hardware-in-the-loop simulation (WT-HILS) should be used to evaluate the FCS after the HILS evaluation and before the flight test evaluation. In this paper, a preliminary research towards the WT-HILS techniques for FCS evaluation was performed to solve several basic problems: what WT-HILS is, what FCS performances WT-HILS can evaluate, and how WTHILS will evaluate FCS. Firstly, to know what WT-HILS is, the concept, the general history and the features of WT-HILS were introduced. After that, the evaluation abilities of WT-HILS were analyzed in order to show what FCS performances WT-HILS can evaluate. Lastly, a WT-HILS evaluation method towards a classic pitching control system was designed in order to show how WTHILS will evaluate FCS. Keywords-flight control system evaluation; hardware-in-theloop simulation; wind-tunnel hardware-in-the-loop simulation; flight test; virtual flight testing

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