State Feedback H∞ Semi Active Control of Fighter Jet Seat

Yıl 2019, Cilt: 60 Sayı: 694, 32 - 49, 19.03.2019

Rahmi Güçlü , Ömer Faruk Sancak

Öz

This paper deals with the design of a Linear Matrix Inequalities (LMI) based state feedback H∞ controller for a semi active vibration mitigation problem of fighter jet seats. Ten degrees of freedom detailed full aircraft mathematical model having semi active seats are controlled and analyzed seat vibrations caused by runway excitations during taxiing. For this purpose a Magneto-Rheological (MR) damper is used instead of a passive damper as semi active seats. The MR damper has non-linear characteristics and its damping force varies by voltage which is applied to electromagnetic coil. The performance of seats with the MR damper is controled via LMI based state feedback H∞ controller. The control method is compared with the passive case (MR 0 V).   

Anahtar Kelimeler

Aircraft landing gear, seated human model

Savaş Uçağı Koltuğunun Durum Geri Beslemeli H∞ Yarı Aktif Kontrolü

Öz

Bu çalışmada savaş uçağı koltuklarının yarı aktif titreşim azaltma problemi için Doğrusal Matris Eşitsizlikleri (DME) tabanlı durum geri beslemeli H∞ kontrolcü tasarlanması gerçekleştirilmiştir. Uçağın pistteki taksi hareketi esnasında yoldan gelen uyarıların sebep olduğu, on serbestlik dereceli yarı aktif koltuklara sahip tam uçağın matematiksel modelinin koltuk titreşimlerinin kontrolü ve analizi yapılmıştır. Bu amaçla, yarı aktif koltuklar olarak pasif sönümleyici yerine Manyeto-Reolojik (MR) sönümleyici kullanılmıştır. MR sönümleyici doğrusal olmayan karaktere sahiptir ve sönümleme kuvveti elektromanyetik sargılara uygulanan gerilim ile değişir. MR sönümleyicili koltukların performansı DME tabanlı durum geri beslemeli H∞ kontrolcü ile sağlanmıştır. Kontrol yöntemi sistemin pasif hali (MR 0 V) ile karşılaştırılmıştır.

Anahtar Kelimeler

Uçak iniş takımları, koltuklu insan modeli

Kaynakça

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