Mixed flow production line dynamic bottleneck prediction method

A forecasting method and production line technology, applied in forecasting, instrumentation, data processing applications, etc., can solve problems such as inaccurate results

Active Publication Date: 2019-10-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0006] In view of the above-mentioned problems or deficiencies, in order to solve the problem of inaccurate results that do not consider the non-linear relationship in th

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  • Mixed flow production line dynamic bottleneck prediction method
  • Mixed flow production line dynamic bottleneck prediction method
  • Mixed flow production line dynamic bottleneck prediction method

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Embodiment Construction

[0077] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation manners and accompanying drawings.

[0078] by Figure 4 The lower vehicle body assembly line described in is taken as an example to analyze the method adopted in the present invention. There are 10 processes in total. For the convenience of discussion, the letters in the block diagram are used to represent the processes.

[0079] The production line now mainly produces three products, C2, S1, and C1, in mixed flow. Table 1 shows the timetable required for each product in each production process, and the production line beat is 70S.

[0080] Table 1 Production schedule of each process of the product

[0081] car model A B C D E F G H I J C2 65 62 65 64 65 70 66 65 64 64 S1 63 62 65 66 63 69 66 65 63 64 C1 65 64 65 63...

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Abstract

The invention relates to the field of industrial engineering, in particular to a mixed flow production line dynamic bottleneck prediction method. The method comprises: considering relative load rate,processing time utilization rate, utilization rate variability and output and buffer queue length indexes; regarding the indexes as a time sequence, performing modeling on historical data of the timesequence by using a VAR vector autoregression model algorithm, performing short-term prediction on relevant parameters at the t + 1 moment, extracting irrelevant evaluation indexes, realizing prediction on the dynamic bottleneck, and completing prediction on the bottleneck at the t + 1 moment by using the model. The bottleneck procedure obtained by the method is a dynamic bottleneck at a future moment, the bottleneck offset phenomenon possibly occurring in the production line can be predicted, the production line can be adjusted before bottleneck drift by utilizing the prediction result, and the influence on the production line is reduced.

Description

technical field [0001] In the field of industrial engineering, the invention relates to a dynamic bottleneck identification method of a production line, specifically a dynamic bottleneck prediction method of a mixed-flow production line. Background technique [0002] Bottleneck identification is the core issue in production line scheduling optimization. In the operation of the production line, bottleneck equipment is the most critical factor restricting the production cycle, output, production efficiency and WIP level of the manufacturing system. Therefore, effective identification of bottleneck equipment in the production line It is the basic premise to optimize the production line and improve the performance of the production line. [0003] Currently, production line bottleneck identification models usually have the following problems: [0004] (1) Most of the bottleneck identification algorithms only analyze the bottlenecks existing in the system at the current moment, a...

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Application Information

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IPC IPC(8): G06Q10/06G06Q10/04
CPCG06Q10/06312G06Q10/067G06Q10/04
Inventor 李波谢宗实
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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