Abstract: A travelling vehicle system includes an intermediate track; first tracks; second tracks; a first switching track which connects the intermediate track and one of the first tracks to an other one track; and a second switching track which connects the intermediate track and one of the second tracks to the other one track. When a travelling vehicle travels on the intermediate track, a travelling vehicle controller determines before the travelling vehicle enters the first switching track that the travelling vehicle can enter both the first and second switching tracks in the case of determining that the first track on which the travelling vehicle is currently travelling is connected to the intermediate track and determining that the intermediate track is connected to the second track selected by the travelling vehicle.

Abstract: A travelling vehicle system includes an intermediate track; first tracks; second tracks; a first switching track which connects the intermediate track and one of the first tracks to an other one track; and a second switching track which connects the intermediate track and one of the second tracks to the other one track. When a travelling vehicle travels on the intermediate track, a travelling vehicle controller determines before the travelling vehicle enters the first switching track that the travelling vehicle can enter both the first and second switching tracks in the case of determining that the first track on which the travelling vehicle is currently travelling is connected to the intermediate track and determining that the intermediate track is connected to the second track selected by the travelling vehicle.

Abstract: A contactless power feed type traveling vehicle system prevents and minimizes leakage of the magnetic field from a power feed cable and includes an AC power source, a power feed cable, a power reception pickup, and a magnetic field reducing section. The power feed cable is connected to the AC power source. The power reception pickup is provided on a traveling vehicle and arranged to receive electric power through the power feed cable in a contactless fashion. The magnetic field reducing section includes a coil antenna and a capacitor. An induced electric current flows in the coil antenna due to a magnetic field generated by an electric current flowing in the power feed cable. A resonance relationship is established between the coil antenna and the capacitor such that the induced electric current in the coil antenna is out of phase or in opposite phase with the electric current flowing in the power feed cable.

Abstract: A contactless power feed type traveling vehicle system prevents and minimizes leakage of the magnetic field from a power feed cable and includes an AC power source, a power feed cable, a power reception pickup, and a magnetic field reducing section. The power feed cable is connected to the AC power source. The power reception pickup is provided on a traveling vehicle and arranged to receive electric power through the power feed cable in a contactless fashion. The magnetic field reducing section includes a coil antenna and a capacitor. An induced electric current flows in the coil antenna due to a magnetic field generated by an electric current flowing in the power feed cable. A resonance relationship is established between the coil antenna and the capacitor such that the induced electric current in the coil antenna is out of phase or in opposite phase with the electric current flowing in the power feed cable.

Abstract: A feeding line is connected to an AC source so that electricity is picked up from the feeding line in a non-contact manner by a pickup coil provided on the side of a moving body. A compensating current from a compensating power source in phase or in reverse phase with respect to a current flowing in the feeding line is caused to flow in a compensating line arranged in the vicinity of the feeding line. A magnetic field from the compensating current reduces a leakage magnetic field from the feeding line.