The Design of Flight Controller Based on the H_2 of LMI

According to the relative stability of flight s ta te during aircraft cruising,an efficient way was introduced to design H 2 stati c output feedback controller based on LMI for longitudinal model. The simulation result shows that the aircraft can hold stable flight under the disturbance and the uncertainty to some extent.So the design was proved possible and efficient, which provides a direction for civil aircraft flight controller design during cr uising.