The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Mar. 10, 2011
Masatsugu Numazaki, Ibaraki, JP;
Isamu Satoh, Ibaraki, JP;
Satoshi Kohsuge, Ishikawa, JP;
Kyouhei Sawada, Ishikawa, JP;
Yoshiaki Saito, Kanagawa, JP;
Jun Kawayanagi, Tochigi, JP;
Minoru Wada, Ibaraki, JP;
Masatsugu Numazaki, Ibaraki, JP;
Isamu Satoh, Ibaraki, JP;
Satoshi Kohsuge, Ishikawa, JP;
Kyouhei Sawada, Ishikawa, JP;
Yoshiaki Saito, Kanagawa, JP;
Jun Kawayanagi, Tochigi, JP;
Minoru Wada, Ibaraki, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
A control device for a work machine on a construction vehicle is provided so that a bucket cylinder is stopped at a target position, with high accuracy achieved in a bucket cylinder length, and with chock held down to a low level. A bucket cylinder length detection section refereces a cylinder length detection table on the basis of a boom angle and a bell crank angle, thereby detecting a bucket cylinder length. A bucket attitude control section controls the bucket cylinder length so that a target position will be reached. Feedback control is performed until a set value which is set short of a target value is reached. After the bucket cylinder length reaches the set value, open loop control is performed until the target value is reached.