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International audienceThis article aims to design a kind of gripping-beltspeed automatic tracking system of traditional Chinese herbal harvesterby AT89C52 single-chip micro computer as a core combined with fuzzy PIDcontrol algorithm. The system can adjust the gripping-belt speed inaccordance with the variation of the machine's operation, so there is aperfect matching between the machine operation speed and thegripping-belt speed. The harvesting performance of the machine can beimproved greatly. System design includes hardware andsoftware

The Design of the Automatic Control System of the Gripping-Belt Speed in Long-Rootstalk Traditional Chinese Herbal Harvester