Double fuzzy control system for tea carding machine
FU Jie, ZHAO Zhang feng, ZHONG Jiang, QIAO Xin
(College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: Aiming at the color yellow, darker or burnt problems generated in tea carding, by the analysis of tea carding technology, temperature control, fuzzy algorithm and fuzzy PID control technology, fuzzy algorithm and fuzzy PID control technology was applied in tea carding machine control system. A design of tea carding machine double fuzzy control system based on fuzzy algorithm, fuzzy PID control technology, and STM32 ARM Cortex M3 microcontroller was presented. Simulations about traditional PID control system and double fuzzy control system were made in Matlab, and also the experiments about the both systems on 6CLZ 60 tea carding machine were done. The results indicate that the parameters which output by this control system are ideal of tea carding, the temperature departure is less then 1 ℃. The double fuzzy control system for tea carding machine can reduce the human factors in the process of tea making, improve the quality or tea carding and the intelligent level of the machine for tea making.

Key words: fuzzy control; fuzzy PID; tea carding machine; temperature control; Matlab