关键词: 导向, 秸秆, 探测, 椭圆

Abstract: Automatic guidance systems for tractors improved track accuracy and inter-row operating performance, reduced the intension of driver. The mechanical guidance for tractors detected path by contact crops, stubbles or furrows in the field with simple structure that easy to maintain and lower cost. A low cost equipment of mechanical detector for tractors to auto-matically guide in standing maize stubbles field is presented. The symmetrical frame of the detector and half ellipse shape of the feeler are designed by analyzing characters of detector sensing in stubbles rows. The main parameter such as space between center of ellipse and that of rotation axle is provided on the base of analyzing feeler forces and rotation movement in dynamics. The result of test showed that the automatic guidance equipment with half ellipse shape of the feeler and angle sensor is capable of detecting the guidance rows of standing maize stubbles.

Key words: Automatic guidance, Detect, Ellipse shape, Stubble