## Abstract

A non-smooth optimization approach for designing constant output-feedback controllers for linear time-invariant systems with lightly damped poles is considered. The design requirements combine H_{∞} performance requirements with regional pole constraints excluding high frequency lightly damped poles. In contrast to the usual (full) pole-placement (FPP) problem, the problem dealt here is one of Selective Pole Placement (SPP). The latter design problem is frequently encountered in the control of aircraft with non-negligible aeroelastic modes which are too fast to be handled by the control surface actuators. As in the FPP case, the pole constraints are embedded in the design criterion using a transformation on the system model which modifies the H _{∞}-norm. of the closed-loop system via a barrier function that is related to the closed-loop poles damping. In The SPP case, however, numerical calculations of the gradient of the cost function are needed rather than a closed form solution derived for the FPP. The method is applied to a flight control example of a flexible aircraft.

Original language | English |
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Title of host publication | 53rd Israel Annual Conference on Aerospace Sciences 2013 |

Pages | 545-564 |

Number of pages | 20 |

State | Published - 2013 |

Event | 53rd Israel Annual Conference on Aerospace Sciences 2013 - Tel-Aviv and Haifa, Israel Duration: 6 Mar 2013 → 7 Mar 2013 |

### Publication series

Name | 53rd Israel Annual Conference on Aerospace Sciences 2013 |
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Volume | 1 |

### Conference

Conference | 53rd Israel Annual Conference on Aerospace Sciences 2013 |
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Country/Territory | Israel |

City | Tel-Aviv and Haifa |

Period | 6/03/13 → 7/03/13 |

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