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Method and device for controlling overhead hoist transfer vehicle

A vehicle control and vehicle technology, which is applied to conveyor control devices, vehicle position/route/height control, storage devices, etc., can solve problems such as impact on loads, and achieve the effect of solving malfunctions and improving durability.

Pending Publication Date: 2021-04-13
SEMES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to solve the problems of the prior art as described above, to solve the problem of constantly stopping and starting due to the close distance between OHT vehicles in the stagnant section or bottleneck section of OHT vehicles and to induce vibration due to this, especially in the OHT vehicles. The problem that the load (jerk) exerts an impact on the cargo due to the instantaneous reaction in the section where the acceleration is reversed and the OHT vehicle decelerates immediately after acceleration.

Method used

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  • Method and device for controlling overhead hoist transfer vehicle
  • Method and device for controlling overhead hoist transfer vehicle
  • Method and device for controlling overhead hoist transfer vehicle

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Embodiment Construction

[0058] In order to explain the present invention, its operational advantages, and objects achieved by implementing the present invention, preferred embodiments of the present invention will be illustrated below and described with reference to them.

[0059] First of all, the terms used in this application are only used to describe specific embodiments and are not used to limit the present invention. As long as different meanings are not clearly indicated in the context, singular expressions may include plural expressions. In addition, in this application, terms such as "comprising" or "having" are used to refer to the existence of features, numbers, steps, actions, constituent elements, parts or their combinations described in the specification, and it should be understood that they do not preclude a or the presence or additional possibility of other features above or numbers, steps, actions, constituent elements, parts, or combinations thereof.

[0060] In the description of ...

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Abstract

A method and a device for controlling an OHT vehicle are proposed. The method and device presents a solution in which it is possible to minimize a repetition of start and stop of a vehicle, due to congestion on a track, by providing a buffer distance or a buffer waiting time, when the control target vehicle starts due to moving out of range of a proximity distance to a preceding vehicle, after stopping according to reaching of the proximity distance to the preceding vehicle, during driving the OHT control target vehicle.

Description

technical field [0001] The present invention relates to an OHT vehicle control method and device, and proposes the following scheme in more detail: When the OHT control object vehicle is running, after the vehicle stops according to the approach distance with the preceding vehicle, when the preceding vehicle departs from the approach distance, When the control subject vehicle departs, a buffer distance or a buffer waiting time is given to minimize the repetition of departure and stop of the vehicle due to congestion on the track. Background technique [0002] The production process of semiconductor products performs hundreds of processes until the finished product, and the logistics movement of hundreds of thousands of pieces occurs during the execution of the semiconductor manufacturing process. In such logistics transfer process, OHT (Overhead Hoist Transfer) is applied as a logistics transfer automation system in semiconductor production lines in order to prevent contamin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/02H01L21/677
CPCG05D1/0223H01L21/67733B65G2203/0283B65G2203/0291B65G43/02H01L21/67276H01L21/67259B65G1/0457
Inventor 李俊范崔永才梁东勋金正恩
Owner SEMES CO LTD
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