| 摘要 |
<p>PURPOSE:To lighten speed change shock by switching a planetary gear unit in a speed change gear to low gear side or high gear side by switching a clutch and controlling an electric motor according to the deviation of the number of revolutions of the clutch and an output shaft. CONSTITUTION:The rotary shaft 12 of an electric motor 10 is linked with the input shaft 16 of a speed-change gear installed in parallel to said rotary shaft through gears 20 and 18, and an output shaft 24 is installed coaxially to the input shaft 16, permitting relative revolution. A sun gear 26, ring gear 30, and a planetary gear unit C including planetary gear 32 are arranged onto the output shaft 24, and a cone clutch 34 for switching the planetary gear unit C to low gear side or high gear side is installed. Each output of the first revolution-number sensor 60 for detecting the number of revolutions of the cone clutch 34 and the second revolution-number sensor 61 for detecting the number of revolutions of the output shaft 24 is compared by a comparator 62, and the revolution of the electric motor 10 is controlled through a motor controller 63, according to the deviation.</p> |
