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In this paper, the differences between decoupled and coupled control of bank-to-turn(BTT) missiles have been studied in detail from three aspects: stabilizability, linear quadratic regulator(LQR) control and tracking control. It is found that for some parameters the BTT missile can be controlled by a decoupled way,especially for stabilizability and LQR control. However, for some others, the BTT missile cannot be decoupled and a coupled control method is needed. Therefore, for a practical flight control system, the decouplability should be studied before giving a decoupled control method. In addition, in order to avoid the disadvantages of LQR control method, an improved H∞controller design method is given. Combined with tracking control problem, a new H∞control method is established for trajectory tracking.
In this paper, the differences between decoupled and coupled control of bank-to-turn (BTT) missiles have been studied in detail from three aspects: stabilizability, linear quadratic regulator (LQR) control and tracking control. It is found that for some parameters the BTT missile can be controlled by a decoupled way, especially for stabilizability and LQR control. However, for some others, the BTT missile can not be decoupled and a coupled control method needed. Thus, for a practical flight control system, the decouplability should In addition, in order to avoid the disadvantages of the LQR control method, an improved H∞controller design method is given. Combined with tracking control problem, a new H∞control method is established for trajectory tracking .