Sintokogio, Ltd.

Toyohashi University of Technology

Etsuzo Kawai

Kazuhiko Terashima

Takanori Miyoshi

Shigeaki Yamamoto

A control system comprising a force measuring means () for measuring the magnitude of the force acting on a lower part of the rope suspending a load, which force is caused by a force imposed on the load by an operator, the mass of the load, and an acceleration of the load; a first control means () having a first computing unit, the first computing unit computing a rotational direction and a velocity of a servomotor to be driven, based on the measured result from the force measuring means, and outputting a signal that corresponds to the measured result to the servomotor, a length measuring means for measuring the length of a rope () wound down from a hoist drum; a weight measuring means for measuring the weight of the load suspended from the rope; an angle measuring means for measuring the angle of the rope relative to a vertical plane when the operator laterally pushes the load; and a second control means having a second computing unit, the second computing unit computing the operation conditions for the crane based on the measured information from the length measuring means, the weight measuring means, and the angle measuring means, and outputting a signal that corresponds to the measured result to the crane.

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Toyokawa, Japan

Etsuzo Kawai