The Application of Gray Clustering and Information Axiom Integrated in the Scheme Evaluation of Mechanical Products

2012 ◽  
Vol 605-607 ◽  
pp. 127-132 ◽  
Author(s):  
Ji Wei Qiu ◽  
Rui Jun Zhang ◽  
Xin Xin Si

To construct the rational and scientific design scheme evaluation method for a target, on the basis of researching on the complement of the gray clustering theory and information axiom, applying the combination in the design scheme evaluation, a scheme evaluation method based on the grey clustering and information axiom integrated is put forward. Aiming at the defect of obtaining difficulty for evaluation indexes, the evaluation index system is constructed by using the analytical hierarchy process. Aiming at the shortcoming that qualitative indexes are not be evaluated by information axiom, the qualitative index is whitened by using the triangle whiten weight function. At the same time, the computational formula of the information amount is improved, and the design scope and system scope of design scheme are extended to make the calculation results more actual. The weight of each index in the evaluation process isn’t needed to provide, and the subjective judgment is avoided on the influence of the evaluation results. Taking the process of obtaining the optimal scheme for the mechanical parking equipment as an example, the proposed method is analysis verified. The application examples show that the optimal scheme satisfying user needs is got in a relatively short time by using this evaluation method and a theoretical basis is provided for the establishment of a scientific and rational evaluation method.

2012 ◽  
Vol 605-607 ◽  
pp. 263-266 ◽  
Author(s):  
Qin He ◽  
Rui Jun Zhang ◽  
Nan Guo ◽  
Dong Sheng Cong ◽  
Ji Wei Qiu

Applying fuzzy information axiom in product concept design, the evaluation method for design schemes based on fuzzy information axiom was built and the insufficient of estimation in qualitative indexes was overcome. Actual membership function curve was selected conform to different index types, and fuzzy language of qualitative indexes is numerical. Through computing information content of each product scheme, the optimal scheme was selected with the unified metrics. The model was applied in scheme evaluation of handling equipment in stereo garage and its effectiveness was verified. Meanwhile, the optimal design scheme of handling equipment in vertical rotary stereo garage was obtained and the theoretical foundation was provided for handing equipment.


2013 ◽  
Vol 357-360 ◽  
pp. 1783-1788
Author(s):  
Chang An Zhou ◽  
Hong Ren ◽  
Jing Yang Zhou

In order to solve the existent problems of incomplete and ambiguous information during the evaluation on the multiple constraints factors of city underground space development and utilization, this paper applies analytic hierarchy process and fuzzy comprehensive evaluation method to construct the comprehensive evaluation index system of the multiple constraint factors of city underground space development and utilization, then Yuzhong District, Yubei District, Beibei District in Chongqing respectively as an example, and comprehensively to evaluate the multiple constraint factors of city underground space development and utilization. Example analysis shows that, it has high feasibility and effectiveness that applies the method of fuzzy comprehensive evaluation to the multiple constraint factors of city underground space development and utilization, and it can contribute to solve fuzziness and uncertainty problems of the evaluation process.


2012 ◽  
Vol 263-266 ◽  
pp. 1559-1563
Author(s):  
Wei Wei Wang ◽  
Xiao Yan Yang

The interface design of software used on Home Appliances targeted at satisfying passenger's physiology and psychological needs when operating the machine to the maximum extent is a complicated synthetic topic which embracing ergonomics, visual communication design, user experience design, behavior psychology, cultural studies of the consumer, optics and Chromatics and so on. So, it is very difficult for us to find a unified criterion which can be used to estimate the interface design of the software used on Home Appliances. In order to improve science and objectivity of the evaluation process, this paper established the evaluation index system centered on the user experience firstly. Then identified the weight of each index used AHP. Furthermore, constructed the evaluation analytical model used the Gray Disaster theory. This method effectively overcomes the subjectivity and arbitrariness in the evaluation process. Finally, the prototype system of the software has been developed to verify the validity of the method.


2013 ◽  
Vol 411-414 ◽  
pp. 2511-2515
Author(s):  
Hou Xing You

Axiomatic design theory is a popular methodology for product design scheme evaluation in recent years. However, as information axiom has some limitation for information content of non-functional attributes, the application of axiomatic design theory is bound. Therefore, a new method is proposed for product design scheme evaluation in this paper, which is the generalized information content calculation, and the proposed method avoids the shortcoming of traditional information content calculations. Finally, the proposed method is applied in a case study, and experimental result shows the feasibility of the proposed method.


Author(s):  
Jian Zhang ◽  
Chaoqiong Luo ◽  
Liping Wang

Aiming at the selection of modern auto parts design schemes, an evaluation method of automobile parts design scheme for intelligent manufacturing is proposed. Considered the environment-friendly factors and traditional manufacturing factors, the evaluation index system of automobile parts design scheme was established, which taken technology, environment, economy and quality reliability as the first level evaluation index, and 12 second level indexes under the first level index. The game theory method was used to comprehensively consider the proportion of subjective and objective weights to determine the composite weight of each index. Aimed at the certainty and uncertainty of the evaluation index, the set pair analysis relative closeness method was used to calculate the composite weight and established the model. Three sets of automobile panel design schemes of a company were selected, and the mathematical model was used to calculate them. With the help of C language program, the advantages and disadvantages of the three design schemes were evaluated, and the optimal scheme was obtained. The calculation example proves that the method is true and effective, conforms to the background of modern intelligent manufacturing, and the calculation is simple, and has good feasibility and practicability.


2013 ◽  
Vol 423-426 ◽  
pp. 2930-2933
Author(s):  
Cong Jun Rao

The level and status of disciplines are the important indexes in universities. The evaluation of multiple disciplines plays an important role in the disciplines development. This paper mainly studied the problem of disciplines evaluation in higher education. Firstly, it established the evaluation index system with eight first-grade evaluation indexes, i.e., discipline construction, teaching award, research funding, the scientific research achievement award, team construction, scientific research, talent training, and initial investment, and then used the method of Analytic Hierarchy Process (AHP) to solve the weight of each index. Thirdly, it established a disciplinary evaluation model based on fuzzy comprehensive evaluation method, and analyzed the rationality of the model. The study in this paper provides a new way for the evaluation of university disciplines.


2014 ◽  
Vol 539 ◽  
pp. 908-910
Author(s):  
Feng Yu ◽  
Yi Wu ◽  
Xian Ming Shao ◽  
Jian Chun Guo

By proceeding from practice of the sunny sport activity in higher education institutes, the principles of selecting evaluation index of the campaign have been put forward. Base on the No.17 document of the central committee and related principles, the paper establishes the evaluation index system of the activity. Considering the difficulty of fuzzy synthetic evaluation method in calculation of the multiple factors and ignorance of the relationship among evaluating objects, a new weight evaluation process using entropy method is introduced. This improved method for determination of weight of the evaluating indicators is applied in synthetic evaluation of the sunny sport activity. Compared with the original evaluation method, the method predigests the fuzzy synthetic evaluation process greatly and the evaluation results are more reasonable.


2014 ◽  
Vol 721 ◽  
pp. 476-480 ◽  
Author(s):  
Xin Zhang ◽  
Yan An Zhao ◽  
Li Gao ◽  
Dong Hao Hao

In order to provide basis and standards to the research on unmanned driving behaviors, a more thorough evaluation system of Intelligent Behavior for Unmanned Ground Vehicles needs to come forward. The intelligent behavior of unmanned ground vehicles in pedestrian crossing scenario is taken as an example in this paper. By using building and analyzing evaluation index system, this paper proposes an evaluation method that can comprehensively expressed the technological performance of unmanned ground vehicles based on Analytic Hierarchy Process (AHP). Compared with traditional methods, this evaluation method takes index weight into sufficient conderations and is more objective. The method properly works out with index weight of specific scenarios that reflects the actual situations. The establishment of comprehensive scoring method objectively and conveniently turns the performances of unmanned ground vehicle into scores, so that the results can be compared and ranked directly. Last but not least, a certain participating vehicle is used for case study. The result proves aforementioned method to be practical, reliable, convenient and logical. It not only evaluates the assessment comprehensively, but also evaluates the index separately to guide researchers to find out the defects of unmanned driving vehicle evaluation indexes and point out ways to improve them.


Author(s):  
Laihong Du ◽  
Hua Chen ◽  
Yadong Fang

AbstractTo solve the problem of ergonomic evaluation of suit production system, a hybrid method of IAHP and gray entropy theory is proposed. Firstly, literature reviews for ergonomics evaluation tools and techniques are introduced. Furthermore, ergonomic evaluation index system of suit operation is established according to production practice. Besides, a comprehensive evaluation models process of gray entropy and IAHP is introduced. Finally, a detailed evaluation process of suit sewing, ironing and clipping operation is introduced by an example, and the results show that the evaluation method of the paper is helpful to verify the feasibility and effectiveness of the operation system improvement demonstration.


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