| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pitching suppression device of an industrial vehicle that suppresses pitching irrespective of the state of a cargo, and secures responsiveness to accelerator operation. <P>SOLUTION: A motor rotation number sensor 27 outputs a signal corresponding to the rotational speed of an output shaft of a traveling motor 15. A motor control part 26 controls the traveling motor 15 so as to obtain a traveling speed according to the operation amount of an accelerator pedal 13. A pitching frequency estimation part 24 estimates a pitching frequency fp on the basis of the weight, the height position and a tilt angle of the cargo, and a pitching detection part 25 and the motor control part 26 extract the estimated pitching frequency components in the signal according to the rotational speed from the motor rotation number sensor 27, and control the traveling motor 15 so that magnitudes of the pitching frequency components are reduced. <P>COPYRIGHT: (C)2010,JPO&INPIT |
