Study On Control Technology For Carrier Aircraft Landing

The automatic guide and control system of carrier-based airplane approach and landing is the key technology of modern carrier/carrier-based airplane system. It is also the important part of compatibility of aircraft carrier and carrier-based airplane. The ACLS (Automatic Carrier Landing System) is the presentation of carrier-based airplane automatic approach and landing technology. ACLS can guide and control carrier-based aircraft to safe land on the moving deck of aircraft carrier under all whether and sea state. In this paper, Attitude control system, Approaching power compensation system, H-DOT ACLS and the deck motion prediction technique was researched deeply. Carrier aircraft landing procession with the deck motion information was also simulated.Carrier-based airplane math model is the basic of the controller designing. At first, as a reference to the speed coordinates, building the longitudinal force figure, using the flight mechanics knowledge received the normal, tangential equatin and torque equation and linearization. According to the collective information about J8 aircraft, complete the state space model.After building the model, helping with the PID control method designed the Automatic Carrier control system and simulated it. At first, introduce the relation between the Attitude control system and Approaching power compensation system. Then designed the Attitude control law and Approaching power compensation control law. The cross feedback between attitude and throttle control loop was used so that the angle of attack can be stabilized more quickly.On the basic of the integrated Flight/Throttle control system, introduced vertical rate feedback, formed the vertical rate directive automatic control system, adjust the control law parameter, accelerate the response time.Deck movement is the main danger of the carrier-based airplane landing safely. Whether Automatic carrier landing system can accurately track deck movement or not is the main problem. At last, giving the AR and neural net system recognize method build the prediction model, predict the deck motion information. using the data from the prediction, we add it into the vertical rate directive automatic landing system and simulate it, minish and eliminate the error from the lag.