| 摘要 |
The invention relates to a method and apparatus for controlling the revolutionary rate of a driven shaft (3) via an eccentric gear (8) mounted between the driving and driven shafts. Distinguishing for the invention is that the eccentric gear has a substantially cylindrical housing which is rotated by a driving shaft such as to form a differential gear, and in that the other input shaft of the differential gear is rotated by a control motor (10). The differential gear, control motor (10) and a transducer (14) for the actual angular position of the roll are mounted coaxially and directly onto the end of the shaft the revolutionary rate which is to be controlled. |
