Residual swing will often be generated in the overhead traveling crane drive by factors such as the delay and the friction of the machine even if it is controlled along the pattern. Therefore we have developed "KF dynamic fuzzy crane system" for automatic operation and put it to practical use. This system has many features as follows: cooperative control of positioning and the swing prevention by fuzzy inference; automatic crane control and fuzzy control with one programmable controller; stable operation by swing prevention at high velocities; maintenance free crane motor by using vector controlled general purpose inverter; easy automatization even on an existing crane. >