Modeling and control of temperature of heat-calibration wind tunnel

This paper investigates the temperature control of the heat air-flow wind tunnel for sensor temperature-calibration and heat strength experiment. Firstly, a mathemati-cal model was established to describe the dynamic characteristics of the fuel sup-plying system based on a variable frequency driving pump. Then, based on the classical cascade control, an improved control law with the Smith predictive esti-mate and the fuzzy proportional-integral-derivative was proposed. The simulation result shows that the control effect of the proposed control strategy is better than the ordinary proportional-integral-derivative cascade control strategy.