| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric working vehicle that can travel at a constant speed in accordance with a pedaling amount of an accelerator pedal even if a load varies due to the inclination of a traveling route, and conducts the course management work of a golf course. SOLUTION: A rotational speed command signal (target rotational speed) and an output value of an encoder are compared, and a difference between them is confirmed (S16). When an actual rotational speed is determined to be lower (higher) than the target rotational speed (S18: Yes(No)), the duty ratio of a drive signal outputted to an electric motor is increased (decreased), whereby power supply is increased (decreased) (S19(S20)). By this, the actual rotational speed of the electric motor coincides with the target rotational speed, the electric working vehicle can be traveled at a constant speed in accordance with the pedaling amount of the accelerator pedal irrespective of the inclination of the traveling route. As a result, when the vehicle descends to the hollow of a banker, for example, imprudent abrupt acceleration can be prevented, and safe traveling can be secured. COPYRIGHT: (C)2005,JPO&NCIPI |
