Study of variable structure control technology on stratospheric airship attitude

Aim at autonomous control of stratosphere airship, the paper addresses one attitude controller design approach based on the small disturbance model of airship. The controller was designed based on the theory of output feedback variable structure control, the variable plane is designed by solving a set of bilinear matrix inequality transformation and a set of linear matrix inequalities iterative. Base on high improved gain method, it availably reduce shake used to adding a little and positive quantization in the denominator of control law. Then the control system made up of output feedback variable structure controller is simulated, the simulation results show that this method has excellent control effect.