Production line risk scheduling method for sudden large faults of equipment

A scheduling method and failure risk technology, applied in the direction of instruments, manufacturing computing systems, data processing applications, etc., can solve the problems of large impact, difficult to reflect the risk level of production line equipment operation, low probability of occurrence, etc., to achieve the effect of solving serious harm

Active Publication Date: 2019-09-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] Aiming at the extreme risk with low probability of occurrence but high impact and its cumulative characteristics, the sudden major failure of production line equipment is difficult to reflect the actual operation risk

Method used

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  • Production line risk scheduling method for sudden large faults of equipment
  • Production line risk scheduling method for sudden large faults of equipment
  • Production line risk scheduling method for sudden large faults of equipment

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Embodiment Construction

[0065] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0066] The invention discloses a production line risk dispatching method for sudden and large equipment failures, such as figure 1 As shown, the health status of production line equipment includes healthy, sub-healthy, normal, abnormal, routine failure, and sudden major failure status.

[0067] step 1):

[0068] 1.1) The segmented K-means method is used to initialize the model parameters, and the hidden Markov model initialization parameter λ is obtained by continuously iterating the model cluster centers, that is, λ=(π, A, B).

[0069] In the formula, π represents the initial state distribution vector, A represents the state transition probability distribution matrix, and B represents the observation value probability matrix.

[0070] 1.2) Input the tracking data of the performance parameters of the production line equipment, train the model par...

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Abstract

The invention relates to the field of production line scheduling, in particular to a production line risk scheduling method for sudden large faults of equipment. According to the method, the influence of sudden large faults of the production line equipment is considered during the evaluation process of the production line equipment fault risk, and the health state of the sudden large faults is introduced, so that the adopted risk evaluation scheme can more accurately evaluate the production line equipment risk. By establishing a production line equipment health state model, the weight of the sudden large fault state of the production line equipment in the whole production line equipment health state is determined, and the production line equipment risk is comprehensively evaluated through the linear weighting; an improved differential local algorithm maintains the advantages of the original search method, increases the diversity of individuals, and effectively prevents the search from falling into a local optimal solution. According to the present invention, the risks caused by the sudden large faults of the production line equipment can be considered, and the multi-target risk scheduling of the production line is achieved.

Description

technical field [0001] The invention relates to the field of production line scheduling, in particular to a production line risk scheduling method for sudden and large equipment failures. Background technique [0002] Due to the complexity of the electromechanical production line equipment in the modern manufacturing system, coupled with many uncertainties such as the unpredictable failure of materials and production line equipment components in the production process, sudden major failures of production line equipment will occur randomly in actual production. Although the probability of such a sudden major failure of production line equipment is low, once it occurs, it will cause serious unplanned downtime of production line equipment or major product accidents, thereby reducing production capacity, seriously disrupting the execution of normal production plans, and delaying delivery. [0003] The Chinese patent publication number CN104635772A of Nanjing University of Inform...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/04
CPCG06Q10/0635G06Q50/04Y02P90/30
Inventor 李波张熙
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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