| 摘要 |
PURPOSE:To automatically control the finish angle of systems to be driven by providing a means by which the attitude of a system to be driven, having a draw bar, a circle, and a blade, is detected, finish angle is calculated from the information, and the attitude is controlled by a deviation between the calculated valve and a target value. CONSTITUTION:The attitude of a system to be driven, consisting of a draw bar 2, a circle 3, and a blade 4, is detected as inclination angle alpha of the draw bar, rotation angle beta of the circle, and lifting angle gamma of the draw bar by each sensor (not illustratd), and a finish angle theta is calculated by a computer 12. Then, outputs of a finish angle setter 14 are compared in a comparator 15, and oil- pressure cylinders 5a and 5b and an oil-pressure motor (not illustrated) for the circle 3 are controlled through a drive circuit 16 and an electricity/oil converter 17. Thus, the finish angle theta of the system to be driven can be kept automatically. |
