Just-in-time-based parallel forward calculation programing method for steel-making production planned time

A production planning, just-in-time technology, used in computing, instrumentation, data processing applications, etc.

Inactive Publication Date: 2011-01-12
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of existing research methods, establish a kind of general steelmaking production planning time based on the just-in-time system and push

Method used

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  • Just-in-time-based parallel forward calculation programing method for steel-making production planned time
  • Just-in-time-based parallel forward calculation programing method for steel-making production planned time
  • Just-in-time-based parallel forward calculation programing method for steel-making production planned time

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Embodiment 1

[0097] On the basis of establishing the underlying object model of the production process network, and based on the just-in-time steelmaking production operation planning time parallel and forward programming method, the steelmaking-continuous casting production operation plan for N furnaces passing through the corresponding stations in M ​​processes is compiled. The inventive method is described in detail as follows:

[0098] Step 1 Initialize

[0099] Read the underlying object model of the production process network, batch planning, and the scheduled start-up time of each continuous casting machine;

[0100] Step 2 Continuous pouring calculates the start pouring time of each heat x i，M，k

[0101] According to the starting and pouring time of each continuous casting machine, the continuous casting calculation of formula (1) is used to obtain the start and end pouring time of each heat on the continuous casting;

[0102] Step 3: Calculate the target start time x' of each h...

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Abstract

The invention discloses a just-in-time-based parallel forward calculation programing method for steel-making production planned time. The method comprises the following steps of: on the basis that a steel-making production process flow network bottom layer object model takes a working position, a working procedure and a transport line as basic elements and the normal distribution rules of the operation time and transportation time of various steel grades are considered, regarding the pouring start time of each heat of sequential casting constraint calculation as a delivery date; taking the operation start time of each heat in the aspect of working procedure based on working procedure backward calculation as the planned reference target time; after the start and end operation time of each heat are calculated by time parallel forward calculation, distributing an appropriate processing working position for each heat by a working position selection rule; and adjusting and determining the start and end operation time on a corresponding working position of each heat by a heat operation time adjusting strategy in reference to the reference target time. An executable operation planning and dispatching scheme for realizing sequential casting production can be programmed rapidly and the method has high generality and wide applicability to the optimization of steel-making production operation planning and dispatching.

Description

technical field [0001] The invention relates to the field of metallurgical production planning and scheduling, in particular to a method suitable for solving the difficult problem of formulating steelmaking production operation planning and scheduling schemes in the metallurgical field. Background technique [0002] Steelmaking and continuous casting production is a key process in the organization of steel production, and it has the characteristics of a complex large system such as diversity, multi-level, nonlinearity and dynamic openness. The formulation of its production operation plan not only needs to consider the production process constraints of each process, the dynamic matching of multi-machine and multi-task and the dynamic selection of multi-path, but also needs to consider the impact of upstream and downstream processes on the production organization from the perspective of the system, which is NP complete. question. Making a reasonable steelmaking and continuous...

Claims

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Application Information

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IPC IPC(8): G06Q10/00G06Q50/00G06Q10/06
Inventor 朱道飞王华马长波
Owner KUNMING UNIV OF SCI & TECH
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