This article aims to design a kind of gripping-belt speed automatic tracking system of traditional Chinese herbal harvester by AT89C52 single-chip micro computer as a core combined with fuzzy PID control algorithm. The system can adjust the gripping-belt speed in accordance with the variation of the machine’s operation, so there is a perfect matching between the machine operation speed and the ...

A core concept of the Semantic Web 1 is to enrich Web documents with machine-readable metadata (i. e. data describing the resources). Such metadata and the corresponding documents are already provided by a growing number of digital libraries on the Web. The Open Archives Initiative Protocol for Metadata Harvesting ([VdSL01]) provides a standard for harvesting metadata from any digital library t...

Spatial variability of yield is very important in precision farming. With a yield monitor system installed on combine harvester, the yield data can be collected automatically while harvesting. In this paper, the component and the working theory of the yield monitor system were introduced. Performance of main sensors and the method improving GPS position accuracy were analyzed. Based on the anal...

Arguments are presented favouring the step-wise introduction of mechanisation into cane harvesting. The multi-pass "McConnel" system of whole stick harvesting offers such a phased introduction. Three machines are introduced in the following order as labour becomes scarcer a versatile loader, a reaping aid which leaves the cane in orderly swaths "inline", and a pickup cleaner-bundler which takes...

This paper presents stress and strain analysis of outer shaft shoulder (OSS) and inner shaft shoulder (ISS) of a new paddy harvesting head (PHH) using finite element method (FEM). Snapping grain unit is a part of this head, with OSS and ISS as its members. The analysis was performed using the ABAQUS software with Dynamics Explicit Solution Method. Eight-node block and four-node tetrahedral elem...