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Application of fuzzy comprehensive evaluation in fault diagnosis of plunger pump
Published in Fei Lei, Qiang Xu, Guangde Zhang, Machinery, Materials Science and Engineering Applications, 2017
Chao Wu, Di Wu, Xuyao Mao, Hongyuan Ding, Junhua Hu, Yiou Liu
Because of these characteristics above, it is difficult to find fault causes only by experience, making it necessary to disassemble multiple sites to locate the cause, which seriously affects its performance and service life. Thus a method for intelligent fault diagnosis of plunger pump is in an urgent need, which can provide accurate and efficient diagnosis without disassembling the plunger pump. Fuzzy mathematics theory provides a mechanism to express and deal with fuzzy logic, which can deal with the uncertain information and incomplete information in data. The fuzzy comprehensive evaluation method has become the important method and tool to solve the fuzzy information due to a comprehensive and accurate evaluation with the comprehensive influence of multi factors[5,6].
FUZZY SETS, FUZZY OPERATORS, AND FUZZY RELATIONS
Published in Kumar S. Ray, Soft Computing and Its Applications, Volume One, 2014
In representing human understanding of various kinds of real world activities, Zadeh formally introduced the concept of a fuzzy set. A fuzzy set is the theoretical primitive of fuzzy mathematics just as a classical set is the theoretical primitive of classical mathematics. In fuzzy set theory, classical sets are called crisp sets, in order to distinguish them from fuzzy sets [97].
The Report on the 9th International Satellite Conference on Fuzzy Information and Engineering in Foshan
Published in Fuzzy Information and Engineering, 2019
The International Conference on Fuzzy Information and Engineering is an important meeting held every two years in the field of international fuzzy academics. The fuzziness problem was first proposed by L. A. Zadeh in 1965. Fuzzy mathematics has been used to deal with fuzzy information. By use of methods such as abstraction, generalization, synthesis and reasoning, Fuzzy information is not unreliable information, since in the objective world, there are a lot of vague phenomena, such as ‘two people are like each other’ and ‘good to look good’, we know the boundaries are vague, and people’s experience is also vague. Fuzzy information and engineering are specialized in engineering calculations by processing uncertain information to extract as reliable information as possible. This professional application has a wide range of applications and plays a major role in missile satellite launching, oil and gas exploration and development evaluation, and the division of oil and gas water as well.
Multi-factor of path planning based on an ant colony optimization algorithm
Published in Annals of GIS, 2020
Mingchang Wang, Chunyu Zhu, Fengyan Wang, Tingting Li, Xinyue Zhang
Fuzzy mathematics is a theory and method for studying and managing ambiguous phenomena. The AHP is a simple and flexible mathematical method for multi-dimensional criteria decision-making problems. It can quantitate information, provide complex problems with systematic hierarchies, and calculate factor weights (Chen et al., 2018). The fuzzy planner combines fuzzy maths comprehensive evaluation approaches with the AHP to determine the weight of each image grid. It permits the construction of grid weight data based on remote sensing images, digital elevation models, geology, and geological hazard maps.
EPC renewable project evaluation: a fuzzy real option pricing model
Published in Energy Sources, Part B: Economics, Planning, and Policy, 2018
Hui Gao, Xiu-Hao Ding, Shuncai Li
Fuzzy set theory, proposed by Zadeh in 1965, is introduced to settle uncertainty problems mainly arising from asymmetric information or inherent vagueness and is now widely used as a powerful mathematical tool in many fields (Hardie 2001). This theory defines fuzzy mathematics as a method of dealing with vagueness and emphasizes the irrationality of binary logic and provides a conceptual structure for ubiquitous uncertainty in practice.