| 摘要 |
The method for automatically controlling the ground grading by using a dipper stick cylinder (8) and a swing motor (10), controls a dipper stick cylinder (14) and a boom cylinder (16). The method comprises the stone: memorizing manipulating degrees (&thgr;SP, &thgr;DS, &thgr;SW, &thgr;BK, &thgr;BO), vehicle body angle (&thgr;BD), inclined angle (&thgr;w) of the grading surface at the actuators (6,8,10,12,14,16) of an excavator; calculating the input inclined angle (&thgr;w) to the inclined angle (&thgr;'w) against the vehicle body; calculating and outputting the respective compensated manipulating degrees (&thgr;BKO, &thgr;BMO) of bucket/boom cylinders (14,16) according to the manipulating degrees (&thgr;DS, &thgr;SW) of the cylinder (8) and the motor (10) not to separate the bucket bottom face from the grading surface.
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