サンギア等速度線図を用いた遊星歯車機構の3軸駆動無段変速における瞬間中心の挙動特性の考察

抄録

Although planetary gear trains are presently widely used in hybrid vehicles as a power distribution system and in electric vehicles as a high reduct ion system, its noise and vibration problem has emerged. There are many reports dealing with two-axis driving characteristic of planet gear. However, there have been few reports dealing with three-axis driving one of it. In the present report, we construct a three-axis driving equipment to measure three-axis rotation speed and to estimate dynamic characteristic of planetary gear t rain, based on sun gear speed contour map in continuously variable transmission of it. Moreover, we also consider motion of planet gear as a kind of link mechanism model and focus on an instantaneous center of rotation planetary such as link motion. As a result, it is clear that an unstable meshing occurs when rotation direction of the sun gear reversed under the three-axis transition. Accordingly, the driving condition where the carrier is much slower than the ring gear should be severe because instant center moving distance is longest among every driving condition and sun gear rotation direction is reversed in continuously variable transmission under three-axis driving.