Multi-model internal model control applied in temperature reduction system

For a complex system with the working point range changing, large delay and other characteristics, it has a certain degree of difficulty to be controlled. The usage of multi-model to deal with this kind of control system issues is effective. In this paper, we focus on proposing the different conditions using different models and multi-model internal model control method. According to different local models design corresponding local controllers, it can be obtained by weighting the membership functions to achieve a global multi-model and a global controller. Multiple system simulation results of temperature reduction system show that the proposed control method has better control performance, and it is a viable method for dealing with such problems.