Modeling and control of temperature of heat-calibration wind tunnel

Abstract

This paper investigates the temperature control of the heat air-flow wind tunnel for sensor temperature-calibration and heat strength experiment. Firstly, a mathematical model was established to describe the dynamic characteristics of the fuel supplying system based on a variable frequency driving pump. Then, based on the classical cascade control, an improved control law with the Smith predictive estimate 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

Thermo-plastic finite element analysis for metal honeycomb structure

“…A lot of researches had been made on metal honeycomb structure, but researches on its thermoplasticity is rare and preliminary, among which thermo-elastic analysis [1], impact damage [2,3] and elastoplastic analysis [4][5][6][7] of metal honeycomb structure have been studied extensively, and mathematical models for thermal systems are also available in open literature [8,9]. Figure 1 is a plate with considered composite material structure to withstand heat shock.…”