| 摘要 |
PURPOSE:To minimize the meandering of car body due to overshoot, even in case when the manipulated variables for the correction of a shift toward one side are increased, by operating a prescribed amount of manipulation in opposite direction immediately after said shift is corrected. CONSTITUTION:First, the mode is checked whether it is the lateral crop mode or the strip crop mode. In case of the strip crop mode, the strip crop routine is executed. While corn stalks contact the right rod of a strip crop sensor 3, for example, and a signal detecting the car body deviated right exists, a left solenoid valve 7 is closed and a pulse is generated intermittently to stop the left crawlers intermittently for the left rotation. In this case, the number of generated pulses N1 is counted, and after the deviated car body toward right is corrected, the reverse control is performed unitl the number of pulses is a half the N1 to direct the car body toward right slightly. |
