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Production control support apparatus and production control support method

A production control and support device technology, applied in the direction of program control, total factory control, electrical program control, etc., can solve the problems of time-consuming calculation and timing delay of application

Inactive Publication Date: 2016-02-10
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the method using the production simulator, there is a problem that calculation takes time
On the other hand, in the method using the actual value, there is a problem that the timing of applying production control is delayed in a production line with a long production cycle (time from input to output)

Method used

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  • Production control support apparatus and production control support method
  • Production control support apparatus and production control support method
  • Production control support apparatus and production control support method

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Embodiment Construction

[0016] The production control support device as an embodiment of the present invention is a production control support device for a production line in which a plurality of processes are connected in series, and one process includes: a buffer section for semi-finished products to wait for processing by a processing device; A plurality of processing devices, any one of which processes the semi-finished products waiting in the buffer. The above-mentioned production control support device includes a standby rate calculation unit. For the above-mentioned standby rate calculation part, when an upper limit is set for the number of semi-finished products in the above-mentioned production line, the relationship between the above-mentioned upper limit and the standby rate is calculated. The standby rate refers to: when the number of the above-mentioned semi-finished products reaches The above-mentioned upper limit value is the probability that the above-mentioned semi-finished product i...

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Abstract

The invention relates to a production control support apparatus and a production control support method. The production control support apparatus according to one embodiment includes processing circuitry. The processing circuitry calculates a plurality of different functions depending on respective regions of the upper bound value based on: a number of machines existing in each process; a time interval of the semi-finished products arriving at the production line; a statistical dispersion of the time interval; a time necessary for one machine in each process to process one semi-finished product; and a statistical dispersion of the necessary time; and thereby obtains a relationship between the upper bound value and the blocking probability for each of the regions, and an association of the functions of the respective regions is a function where the blocking probability monotonically decreases depending on an increase of the upper bound value.

Description

technical field [0001] Embodiments of the present invention relate to a production control support device and a production control support method. Background technique [0002] Conventionally, as a control method of a production line, a method of setting an upper limit (referred to as a WIP (Work-In-Process, work in process) upper limit) for the number of semi-finished products in the production line is known. As a method of determining the upper limit of WIP, there are two methods of using a production simulator and a method of using an actual manufacturing value of an on-site production line. [0003] In the method using the production simulator, there is a problem that calculation takes time. On the other hand, in the method using actual values, there is a problem that the timing of applying production control is delayed in a production line with a long production cycle (time from input to output). The production cycle is also called the turnaround time (TAT: TurnAround...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCG05B19/418G05B19/41865Y02P90/02G06N7/01G05B19/41875
Inventor 国信茂太吉田琢史
Owner KK TOSHIBA
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