PROBLEM TO BE SOLVED: To set a mode for correcting a travel distance by measuring a slip ratio, and to reflect the corrected travel distance to each automatic control of a farm field.SOLUTION: A switch is allowed to agree with a travel distance correction (headland measurement) mode, and progression is carried out from a state where the rear end of a traveling machine body 1 is allowed to agree with a levee edge. A travel distance is measured by a rotation sensor based on rotation of drive wheels, and a slip ratio is calculated by comparing a prescribed distance Lm to a landmark O measured beforehand with the travel distance. The travel distance of the traveling machine body is corrected by the slip ratio, and the corrected travel distance is reflected to each automatic control of a farm field.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】スリップ率を計測して走行距離を補正するモードを設定し、補正された走行距離を圃場の各自動制御に反映する。【解決手段】スイッチを走行距離補正(枕地測定)モードに合せ、走行機体1の後端を畦際に合せた状態から前進する。駆動車輪の回転に基づく回転センサにより走行距離を測定し、予め実測した目印Oまでの所定距離Lmと上記走行距離とを比較してスリップ率を算出する。該スリップ率により走行機体の走行距離を補正し、該補正した走行距離を圃場の各自動制御に反映する。【選択図】図8
