A variable weight-based interval type-2 fuzzy rough comprehensive evaluation method for curtain grouting efficiency assessment

2022 ◽  
Author(s):  
Yushan Zhu ◽  
Xiaoling Wang ◽  
Wenlong Chen ◽  
Hui Guo ◽  
Dong Li
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Comprehensive Evaluation Method ◽  
Efficiency Assessment ◽  
Variable Weight ◽  
Curtain Grouting ◽  
Interval Type ◽  
Grouting Efficiency

Study on the Variable Weight Method for Gearbox Fuzzy State Evaluation

2014 ◽  
Vol 651-653 ◽  
pp. 885-890
Author(s):  
Huai Liang Zheng ◽  
Ri Xin Wang ◽  
Min Qiang Xu
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Analytic Hierarchy ◽  
Comprehensive Evaluation Method ◽  
State Evaluation ◽  
Variable Weight ◽  
Weight Method ◽  
Fuzzy State ◽  
Hierarchy Process

Based on the gearbox as the research object, we discussed the problem: how to confirm every part’s weight when assess gearbox’s state by fuzzy comprehensive evaluation method. Contraposing the main problem of the weight-fixed Analytic Hierarchy Process (AHP) that ignoring every part’s fault degree in the process of evaluation, a variable weight method is proposed base on the rate of fault degree contribution. And to a state known gearbox, the weight of each part in the whole gearbox assessment is confirmed by the AHP and the variable weight method respectively. The comparison of the two assessment results shows that the result get by the variable weight method is more close to the gearbox’s real state, so this method is more accurate. What’s more this method is very simple, and can be used in real project.

Condition Assessment of Wind Turbine Based on Cloud Model

2013 ◽  
Vol 448-453 ◽  
pp. 3327-3330 ◽  
Author(s):  
Yu Song ◽  
Jian Mei Zhang
Keyword(s):  
Wind Turbine ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Cloud Model ◽  
Evaluation Model ◽  
Comprehensive Evaluation Method ◽  
Variable Weight ◽  
Quantitative Indicators ◽  
Cloud Theory

In order to detection wind turbine equipment and accurately assess the the equipments condition, this paper combines cloud theory, and propose a new comprehensive evaluation method about wind turbine operating status. Use AHP to establish wind turbine evaluation system, and taking advantage of variable weight mode correct quantitative indicators right weight. Adopt Cloud model function represent the indicator data, and establish improved evaluation model, finally, an example verify the effectiveness of the method.

Variable Weight Fuzzy Comprehensive Evaluation Method for Health Condition of Warship Electromechnical Device

2012 ◽  
Vol 226-228 ◽  
pp. 729-733
Author(s):  
Guang Yu Zhang ◽  
Qing Min Li ◽  
En Shun Ge
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Health Assessment ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Process ◽  
Actual Condition ◽  
Constant Weight ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Variable Weight

Increasing sophistication of naval shipboard machinery coupled with increasing competition for skilled manpower and tightening of defense budgets is forcing the Navy to consider alternative maintenance concepts. This paper proposes a health assessment process in condition-based maintenance architecture based on variable weight fuzzy comprehensive evaluation method. Through analyzing the variables affecting on warship electromechnical equipment condition, a layered assessment index system for warship electromechnical equipment health assessment is built. First, the AHP method is used to determine the constant weight of every index, and then the variable weight model is introduced based on balanced function, in which the constant weight is modified to get the variable weights. By comparing the fuzzy synthetic evaluation based on constant weights with that based on variable weighs, the results show that, the latter is more reasonable and objective, and is also more close to the actual condition of warship electromechnical equipment.

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