| 摘要 |
PURPOSE:To make power saving and high output performance compatible by controlling power distribution to a plurality of motors having different rated outputs in response to a load. CONSTITUTION:When a lower output is required like at the time of traveling in a city area, etc., at a low speed, a motor 2 having a low rated output for a low load is energized from a storage via a controller 4. If the motor 2 having the low rated output is used, current consumption may be low, and power is saved. When an intermediate output is required like at the time of accelerating or traveling at a high speed, a motor 1 having a large rated output for an intermediate load is fed via the controller 4 to obtain an output corresponding to the intermediate load. Further, when a high output is required like at the time of quickly accelerating or traveling at a high speed, both the motors 1, 2 are fed so that the output becomes a sum of both the motors 1, 2, a driving gear comes to give its maximum output to be operated strongly. Thus, both power saving and high output performance can be made compatible. |
