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Patent Searching and Data


Title:
ROTATION CONTROL DEVICE AND CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2006/054582
Kind Code:
A1
Abstract:
A rotation control device (50) of an electrically rotated shovel performs control of a rotating body by a small first torque command value T1 when the rotating body is rotated at constant speed. Therefore, variation in inertia moment of the rotating body varies by telescoping of a boom or an arm affects the rotation speed of the rotating body, enabling rotation operation to be carried out with a sense similar to that in hydraulic drive. On the other hand, when acceleration is made by operating a rotation lever (10), rotation control is performed by a large second torque command value T2. Consequently, acceleration/deceleration is performed quickly and good lively operational feeling can be attained without sacrifice of workability.

Inventors:
Kawaguchi, Tadashi c/o KOMATSU LTD. (Development Division System Development Center, 3-25-1, Shinomiy, Hiratsuka-shi Kanagawa 55, 25485, JP)
Morinaga, Jun c/o KOMATSU LTD. (Development Division System Development Center, 3-25-1, Shinomiy, Hiratsuka-shi Kanagawa 55, 25485, JP)
Application Number:
PCT/JP2005/021013
Publication Date:
May 26, 2006
Filing Date:
November 16, 2005
Export Citation:
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Assignee:
KOMATSU LTD. (2-3-6, Akasaka Minato-k, Tokyo 14, 10784, JP)
Kawaguchi, Tadashi c/o KOMATSU LTD. (Development Division System Development Center, 3-25-1, Shinomiy, Hiratsuka-shi Kanagawa 55, 25485, JP)
Morinaga, Jun c/o KOMATSU LTD. (Development Division System Development Center, 3-25-1, Shinomiy, Hiratsuka-shi Kanagawa 55, 25485, JP)
International Classes:
E02F9/20; B66C23/84; E02F9/22; H02P7/00; H02P29/00
Foreign References:
JP2004169466A2004-06-17
JP2001010783A2001-01-16
Other References:
See also references of EP 1813729A4
Attorney, Agent or Firm:
Kinoshita, Jitsuzo (3rd. floor, Ogikubo TM building 26-13, Ogikubo 5-chome,, Suginami-k, Tokyo 51, 16700, JP)
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