Transient performance analysis method for production line with processing quality problem
A technology of processing quality and analysis method, which is applied in the research field of transient performance analysis method, can solve problems such as wear and dust pollution, and achieve the effect of improving operation efficiency, high precision and high calculation efficiency
Pending Publication Date: 2022-05-13
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
For example, the dust pollution in the car painting workshop, the wear and tear caused by the inaccurate positioning of the clamping device, and the quality problems in the processing process such as uneven oiling of sheet metal in the car stamping plant
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[0138] In order to make the purpose, technical solution and advantages of the present invention clearer, the content of the invention will be further described below in conjunction with the accompanying drawings and examples.
[0139] Such as figure 1 As shown, the transient performance analysis method of the machine production line with processing quality problems disclosed in this embodiment, the specific implementation steps are as follows:
[0140] Step 1: The transient performance analysis method of the machine production line with processing quality problems disclosed in this embodiment performs system modeling. The system is a production line in which a Bernoulli machine with processing quality problems, a detection machine and a limited buffer are serially formed, such as figure 2 shown. Modeling mainly includes: determining system parameters, production status, and production sequence. The parameters of the above system include the number of machines in the system...
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The invention discloses transient performance analysis of a machine production line with processing quality problems, and belongs to the field of production system engineering. The implementation method comprises the following steps: modeling a system with unreliable machines and a limited buffer area, including working unreliable machines and quality unreliable machines, and defining seven transient performance indexes; performing accurate transient performance analysis on the minimum subsystem through a Markov analysis method; through a multi-machine approximate aggregation algorithm, a complex multi-machine system which only comprises a tail detection machine is simplified, and meanwhile, the transient performance of the system can be predicted with high precision; an original production line is decomposed into a plurality of sub-production lines, and then an approximate aggregation algorithm is utilized to simplify a complex multi-machine system comprising a plurality of detection machines, so that transient performance prediction of the production line is realized. The transient performance comprises productivity, rejection rate, consumption rate, inventory level of products in process, hunger rate, blocking rate and completion time.
Description
technical field [0001] The invention belongs to the field of production system engineering, and in particular relates to a research on a transient performance analysis method of a machine production line with processing quality problems. Background technique [0002] Product quality problems have always existed in various processing links of the production system. For example, the dust pollution in the car painting workshop, the wear and tear caused by the inaccurate positioning of the clamping device, and the quality problems in the processing process such as uneven oiling of sheet metal in the car stamping plant. Such defective products with quality problems can often be identified in time through various inspection methods, and the screened out products are sometimes treated as waste products or reprocessed in the next production cycle. Currently, for production systems with quality problems, the main study is their performance under steady-state operation. However, in ...
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IPC IPC(8): G06F30/20G06F17/16G06F119/02
CPCG06F30/20G06F17/16G06F2119/02
Inventor 贾之阳马驰野倪泽军
Owner BEIJING INSTITUTE OF TECHNOLOGYGY