Application of H infinity method to modern fighter configuration
Collins, Daniel J.
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H„ optimal control theory, based on singular value loop shaping, is used to synthesize a controller for the statically unstable longitudinal dynamics of X-29 aircraft. Two design cases are studied: 2-input 2-output; and 3-input 3-output cases. H„ theory provides a direct, effective procedure for synthesizing control laws satisfying specified performance objectives and robustness specifications. The 2 I/O case has better performance, a faster response and is more robust, than the 3 I/O case. Discussion and comparison of results are given.