Three-dimensional container control method and system

Abstract

The invention provides a three-dimensional container control method and system. The method includes the steps of: detecting a position of a hopper when a self-inspection command is received; obtaining a pulse threshold value of a coder based on detection of the position of the hopper, wherein the pulse threshold value is a pulse number of the coder corresponding to the condition when the hopper reaches a preset position in front of a shipment port region, and the pulse threshold value is obtained by compensating the pulse number when the hopper reaches the shipment port region based on an inertia effect of a three-dimensional container; and when it is determined that an actual pulse number of the coder reaches the pulse threshold value during a goods dispatching process of the three-dimensional container, sending an operation stop command to a frequency converter so as to control the hopper to stop when the hopper moves into the shipment port region of the three-dimensional container. The above scheme can simply perform accurate control on the hopper of the three-dimensional container, and reduces the cost.

Description

technical field [0001] The invention relates to the technical field of three-dimensional containers, in particular to a control method and system for three-dimensional containers. Background technique [0002] Three-dimensional container, also known as automatic container, is the main equipment of modern storage. It is mainly divided into vertical circulation container, vertical lifting container, horizontal circulation container, etc., which can realize the automatic operation of the warehouse and improve the management efficiency. Among them, the vertical lifting three-dimensional container uses the pallet as the storage unit. Through the lifting and horizontal movement of the pallet truck, the pallet for storing the goods is taken out or sent to a suitable storage space in the cabinet, and the storage space in the cabinet can be automatically and reasonably arranged. Realize the intelligent distribution and management of goods. [0003] During the operation of the vertic...

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Problems solved by technology

[0003] During the operation of the vertical lifting three-dimensional container, it takes a period of time from the time the controller sends a stop command to the frequency converter until the stop of the hopper (or asynchronous motor), which causes the hopper to fail to run accurately to the delivery area of ​​the three-dimensional container

[0004] In the prior art, servo motors and servo drives are generally used to compensate the resulting distance deviation, which has the problem of complicated operation and high cost

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