Kubota Corporation

Fumio Takada

Yushi Matsuzaki

Megumi Suzukawa

Yasuhisa Uoya

Hiroyuki Araki

Hidetaka Yoshioka

Disclosed is a work vehicle coordinating system configured to carry out a ground work by a main work vehicle and an un-manned controlled sub work vehicle that follows up the main work vehicle. This system includes a main-vehicle position detection module, a sub-vehicle position detection module, a main-vehicle traveling path calculation section, a turning detection unit, a work traveling target calculation section, a turn traveling target calculation section, and a steering control section.

Work vehicle coordinating system

A turn control system for a four wheel drive vehicle which includes an accelerating transmission for driving the right and left steerable wheels at a greater average velocity than the right and left non-steerable wheels. A steering device and a switching device are interlocked such that a change speed device is operable in the accelerating transmission when the steerable wheels are steered in excess of a predetermined angle. An inner one of the steerable wheels with respect to a turning circle has a maximum steering angle .beta.1 which is set to form the following expression:

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Sakai, Japan

Fumio Takada