Design and simulation of airship pressure control system based on fuzzy reasoning

Airship is a kind of aerostat, which is lighter than air. The ascending lift is provided by buoyancy of low-density gas in the envelope. For the secure flight of airship, it is important to control the internal pressure to keep the pressure difference in a safe range. The traditional control rate can only make the pressure difference at a fixed value which relates to the initial states. The thought of fuzzy control is introduced to the traditional control rate. According to the error of pressure difference, the area of vent is changed. In the simulation environment, solar radiation and heat conduction are added on the basis of pressure control and atmosphere environment model. The results show that the pressure difference can track the set value well.