Conveyance system and method of controlling the same
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsSyoji Udou, Hirofumi Ohtsuka
Life of this patent
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Abstract
A conveyance system which performs conveying action with operating a part of or all of a plurality of carrier vehicles, including a loop track, a plurality of carrier vehicles which run on the track, a station where each carrier vehicle performs loading and unloading of a cargo, and a standby station for storing the carrier vehicles at their standby state. The number of the carrier vehicles to be used is determined from a conveyance command number, and can be automatically determined corresponding to the quantity of load in the conveyance system. Accordingly, even if the load is not uniform but significantly varied, the conveying action can be conducted readily and efficiently.
Claims8
A conveyance system which performs conveying action with operating a part of or all of a plurality of carrier vehicles, comprising a loop track, a plurality of carrier vehicles which run on the track, a station where each carrier vehicle performs loading and unloading of a cargo, and a standby station for storing the carrier vehicles at their standby state,
- wherein the number of the carrier vehicles to be used is determined from a conveyance command number.
A method of controlling conveyance system comprising the steps of:
- counting the number of conveying actions either in operation and to be carried out;
- calculating an optimum number of the carrier vehicles corresponding to the number of conveying actions;
- counting the number of the carrier vehicles at their in-action state;
- and when the number of the carrier vehicles at their in-action state is smaller than the optimum number, using some carrier vehicles at their standby state.
A method of controlling conveyance system comprising the steps of:
- counting the number of conveying actions either in operation and to be carried out;
- calculating an optimum number of the carrier vehicles corresponding to the number of conveying actions;
- counting the number of the carrier vehicles at their in-action state;
- and when the number of the carrier vehicles at their in-action state is greater than the optimum number, shifting some of the carrier vehicles from the in-action state to the standby state.
Dependencies are inferred from the claim text.