电磁自热器温度控制系统的研究

In this paper, the structure and mechanism of temperature control system of electromagnetic heater is presented firstly. Secondly，the dynamic model of heat dissipation in heat supplying rooms and the heating model of electromagnetic heater are studied. Aiming to the characteristic of temperature control system such as high inertia; time lag and nonlinearity, the control strategy of indoor temperature of constant water temperature and variable flow and the control algorithm of fuzzy self- adapt PI control which has the function of online adjustment are employed. Then the hardware circuit is completed by using an ARM microprocessor named STM32F103ZET6 based on the analysis of control system. The design of software is completed based on the control strategy and algorithm. At last the experimental research is made.