An Hinfinity -based control system design procedure is developed to produce a controller in which the closed-loop system is designed, using Hinfinity controller in which the closed-loop system is designed, using Hinfinity methods similar to those of H. Kwakernaak (1986), to be robust with respect to both disturbance rejection and insensitivity to parameter variations. The Hinfinity design approach is coupled with multicriterion optimization to design a pitch-axis controller for the F-14 aircraft, (a version of a benchmark problem). The authors design a discrete-time controller even though the benchmark is in continuous time. The benchmark, while specifying gain and phase margins, does not specify the expected ranges for the parameters of the plant. Estimates have been obtained of the reasonable ranges of parameter variations, which are checked against the design. The precompensator is used to shape the output response so as to cause the entire system to achieve the desired performance. The robustness of the angle-of-attack response under large parameter variations is examined. A satisfactory design has not yet been obtained. However, these intermediate results are thought to be of value in demonstrating the difficulty of the problem and the thought processes involved in trying to use Hinfinity methods to solve a realistic design problem.
Digital controller design for the pitch axis of the F-14 using an Hinfinity method
Entwicklung eines Digitalreglers für die Querachse des F-14
Proceedings of the 28th IEEE Conference on Decision and Control ; 3 ; 2325-2330
1989
6 Seiten, 15 Quellen
Conference paper
English
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