Computer control for IGBT based heat load system with rapid response and large heat flux

This paper mainly deals with the development and computer control for heat load system with rapid response and large heat flux. Firstly, the structure and working principle of the IGBT based heat load system are analyzed, and the design method for major parts is discussed. Secondly, a mathematical model to describe the dynamic characteristics is established, and conventional PID and Fuzzy PID control algorithms for the controlled plant are designed. Furthermore, simulations and experimental investigations focused on the developed heat load system and its control strategies are carried out. The simulation and experiment results show that to achieve the same heat flux density, the developed heat load system is five times faster than the traditional heat load system. So it can acquire the satisfactory performance, what is more, the heat load system combined with fuzzy PID control strategy is the more reliable than open loop case and one with conventional PID strategy.