| 摘要 |
PURPOSE: A planetary gear system using two input characteristic, a gear module thereof, and a method for controlling the same are provide to generate a high speed-low torque output or a low speed-high torque output as necessary by combining two input characteristics, thereby changing output characteristics freely. CONSTITUTION: A second gear unit (120) rotates to mesh with the first gear unit (110) A third gear unit (130) rotates to mesh with at least one of the first gear unit and the second gear unit. The firs gear unit includes a sun gear (111) and a sun gear shaft (112). The second gear unit includes a planetary gear (121) and a carrier (122). The third gear includes a ring gear. A driving source comprises a first driving unit (141) and a second driving unit (142) having different outputs from each other. |
