Abstract:  Reaction kettle is a key equipment in process of chemical production. It is an effective way of improving the quality and quantity of chemical products, and realizing high quality, stability and energy saving production by control temperature in reaction kettle accurately. In this paper, a fuzzy controller of reaction kettle temperature is designed based on fuzzy control theory. The input and output of the controller, fuzzy method of accurate quantity, design of fuzzy control rules, fuzzy judgment of output and method of fuzzy control based on rules modified adaptively are researched. At last, the hardware system of temperature control for reaction kettle based on single-chip microcomputer is realized. It takes single-chip microcomputer STM32F103RB as the core hardware platform and uses the chip DSl8B20 digital thermometer sensor to acquisition multi-point temperature in reaction kettle.

Key words: reaction kettle, temperature control, fuzzy-control theory, single-chip microcomputer