Design and analysis of discrete lateral autopilots for coordinated bank-to-turn missiles.
Karadimas, Christos I.
Collins, Daniel J.
Titus, Harold A.
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This thesis addresses the design and analysis of discrete lateral autopilots for application to BTT missiles. The first part reviewed the classical design and analysis of the continuous uncoupled yaw and roll channels as developed in [Ref. 6]. Then, applying analog-to-digital conversion, the corresponding discrete autopilots were designed and analyzed in terms of their transient responses. The second part utilized modern control design techniques for the single-input discrete lateral autopilots. At first, assuming availability of all states for feedback purposes, a discrete state-feedback autopilot was obtained. Next, since the state vector is not always available to direct measurement, as estimator was introduced to implement control. The state-feedback and estimator designs were analyzed for both lateral channels and found to have satisfactory time responses. Finally, coupling the discrete pitch and roll channel autopilots, a state-feedback and estimator were designed and found to be robust.
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