Abstract
In this paper, the longitudinal control of automatic carrier landing is studied. First, the carrier landing control problem is transformed into an optimal control problem of trajectory tracking. Considering the constraints of the control variables and the rate of change of control variables in the realistic landing process, the original linear small disturbance model is expanded. Based on the symplectic pseudospectral method and the adaptive regression prediction technology, a fast receding horizon carrier landing control technology with a variable reference trajectory is developed. Finally, the effectiveness of the control algorithm is verified by simulations at different sea states, initial deviations, and reference trajectory selection strategies. The simulation results demonstrate that the introduction of deck motion prediction can greatly reduce the phase delay of the control system and enhance the tracking ability of the carrier-based aircraft and improve the control effectiveness significantly. The proposed algorithm can precisely control the carrier landing trajectory under initial deviations, the external continuous wind disturbances, and random error of the state variables. Additionally, the calculation efficiency of the present control algorithm is sufficient for real-time online tracking.
Highlights
As the main combat weapon system of aircraft carrier formations, carrier-based aircraft greatly enhance the mastery of the seas, air superiority, and integrated attack-defense capabilities because of the high mobility
Owing to the good numerical characteristic of symplectic pseudospectral methods, together with the idea of receding horizon control, a fast receding horizon carrier landing control technology with the variable reference trajectory based on the glide rate information is designed in this paper
The carrier landing control problem of aircraft was transformed into an optimal control problem of trajectory tracking
Summary
As the main combat weapon system of aircraft carrier formations, carrier-based aircraft greatly enhance the mastery of the seas, air superiority, and integrated attack-defense capabilities because of the high mobility. K. Cui et al.: Receding Horizon Longitudinal Control Technology for Automatic Carrier Landing ever, it is difficult to track the randomly changing reference glide path under the disturbances of deck motion [5]. Owing to the good numerical characteristic of symplectic pseudospectral methods, together with the idea of receding horizon control, a fast receding horizon carrier landing control technology with the variable reference trajectory based on the glide rate information is designed in this paper. In actual flight control systems, there are some limits on the range and rate of change of the rudder deflection and throttle control angle These limits result in the following limitations on the control variables in the carrier landing control model: δHmin. A symplectic pseudospectral algorithm based on the second kind of generating function [28] is used to solve the optimal control problem in the receding time window. A detailed derivation process of the symplectic pseudospectral algorithm based on the second kind of generating function, as well as the meaning and specific expressions of the variables involved in Eq (13)-(16), can be found in the Reference [28], [36]
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