Application of \(H_{2}/H_\infty\) technique to aircraft landing control. (English) Zbl 1338.93294
Summary: The paper describes the automatic control of an aircraft in the longitudinal plane during landing, taking into account sensor errors and disturbances. Aircraft auto-landing is achieved by combining \(H_{2}\) and \(H_\infty\) control techniques, thereby obtaining a robust \(H_{2}/H_\infty\) controller. It provides good precision tracking and robust stability with respect to the uncertainties caused by different disturbances and noise-type signals. The weights of the \(H_{2}\) and \(H_\infty\) control techniques within the robust \(H_{2}/H_\infty\) controller are adjusted so that the aircraft accurately tracks the desired trajectory during the two main stages of the landing process. The theoretical results are validated by numerical simulations for the landing of a Boeing; the results are very good (Federal Aviation Administration accuracy requirements for Category III are met) and prove the robustness of the new auto-landing system even in the presence of disturbances and sensor errors.
MSC:
| 93D09 | Robust stability |
| 93B35 | Sensitivity (robustness) |
| 93B36 | \(H^\infty\)-control |
| 93C95 | Application models in control theory |
| 93C15 | Control/observation systems governed by ordinary differential equations |
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