Research on the Method of Reliability Allocation of Diesel Engine Base on the Cost Function

2012 ◽  
Vol 271-272 ◽  
pp. 1115-1120
Author(s):  
Jia Li ◽  
Ji Ze Guo ◽  
Hai Qing Zhou ◽  
You Wen Wei
Keyword(s):  
Diesel Engine ◽  
Cost Function ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Minimum Cost ◽  
Copula Function ◽  
Reliability Allocation ◽  
Cost Coefficient ◽  
Set Up ◽  
The Cost

In this paper, cost coefficient is introduced by using the technology of FMECA and FTA, and the DM model is proposed, the parameters of cost function are determined by applying the comprehensive evaluation method, the system reliability correlation model is set up by using copula function. the model is nonlinear programming, and the minimum cost is the goal of the model. The reliability allocation for diesel engine is completed by use of genetic algorithm. Finally, the feasibility and effectiveness of the model are verified through example.

scholarly journals The Entropy-Cost Function Evaluation Method for Unmanned Ground Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Ya-Nan Zhao ◽  
Kai-Wen Meng ◽  
Li Gao
Keyword(s):  
Cost Function ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Quantitative Result ◽  
Indicator System ◽  
Function Evaluation ◽  
Unmanned Ground Vehicles ◽  
Ground Vehicles ◽  
Conservative Strategy ◽  
Intelligent Behavior

To improve the technology of unmanned ground vehicles, it is necessary to conduct a proper evaluation on various technologies. Previous evaluation methods are mainly based on completion of the task; this may mislead most of teams of unmanned ground vehicles using a conservative strategy during the evaluation. In this paper, a new evaluation method is proposed. Based on typical working conditions including intersection, car-following, and obstacle-avoiding, the new evaluation indicator system is established, and the entropy-cost function method is applied to the comprehensive evaluation of unmanned ground vehicles. As reported in a numerical example, the proposed evaluation method can get a quantitative result that authentically reflects the intelligent behavior level of unmanned ground vehicles.

Fuzzy Comprehensive Evaluation of Water Quality Management Information System

2014 ◽  
Vol 1044-1045 ◽  
pp. 486-489
Author(s):  
Xin Wang ◽  
He Pan
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Water Quality Management ◽  
Water Environment ◽  
Prediction Method ◽  
Fuzzy Comprehensive Evaluation ◽  
Good Choice ◽  
Water Resources Protection ◽  
Set Up

Water environment assessment is a basic and important work of water resources protection. We set up a fuzzy comprehensive evaluation of water environment based on fuzzy theory and prediction method in this paper. The comprehensive assessment of water environmental quality relates to complicated phenomena and interaction of multi-factor of evaluation. There are plenty of fuzzy phenomena and fuzzy concepts, therefore, make quantitative processing by the comprehensive evaluation method of fuzzy is a good choice to get good results.

A Comprehensive Analysis Method Based on Fuzzy Hierarchy for the Safety Assessment of Overhead Traveling Crane

2010 ◽  
Vol 20-23 ◽  
pp. 196-201
Author(s):  
Ge Ning Xu ◽  
Fan Jiang
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Assessment Model ◽  
Analytic Hierarchy ◽  
Set Up ◽  
Hierarchy Process

By combined fuzzy comprehensive evaluation with AHP (Analytic Hierarchy Process) together, a safety assessment model for overhead traveling crane is set up in regard to deficiency of safety assessment method for crane at present, which can evaluate safety of overhead traveling crane in-service qualitatively and quantitatively. Through a safety analysis and assessment on general overhead traveling crane, the result of assessment is in accord with the practical situation of overhead traveling crane. It can reflect more fully the safety of the whole crane system and the influence and level of each factor to whole crane system safety, witch an effective synthetic evaluation method is put forward for the safety evaluation of crane.

Study on Quality Management of Logistics Equipment Systems

2013 ◽  
Vol 662 ◽  
pp. 993-998
Author(s):  
Liang Sheng Zhou ◽  
Zhen Dong Tan ◽  
Wei Guo Wu
Keyword(s):  
Fault Diagnosis ◽  
Network Analysis ◽  
Quality Management ◽  
Evaluation Method ◽  
Fuzzy Inference ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Model ◽  
Quantitative Risk Assessment ◽  
Set Up

The research and manufacture of the military logistics equipment systems always brings problems in quality management for its complexity and particularity. To solve these problems, a analysis on equipment quality management is conducted. A comprehensive study on reliability, fault diagnosis, and risk analysis models are also performed. The reliability analysis of the system is fulfilled using a method of combined fuzzy inference and network analysis. This method solves the limitations of the traditional network analysis method, of which the result is defined for every failure mode. The abnormality of parameters corresponds to faults in the system, which can be used to establish a knowledge database and a fault diagnosis expert system. A quantitative risk assessment model is set up using a fuzzy comprehensive evaluation method and an incident loss comprehensive evaluation theory. Finally, the above method and model are examined for new trailer mounted equipment. The results validate the proposed method

scholarly journals Effectiveness of Fiscal and Financial Incentive Mechanism in Promoting the Development of TCM Health Industry

2021 ◽  
Vol 275 ◽  
pp. 01018
Author(s):  
Zhixuan Huang ◽  
Jun Li
Keyword(s):  
Chinese Medicine ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Financial Incentive ◽  
Incentive Mechanism ◽  
Field Research ◽  
Fuzzy Comprehensive Evaluation ◽  
Comprehensive Evaluation Method ◽  
The Government ◽  
Set Up

On the basis of field research, this paper uses AHP and fuzzy comprehensive evaluation method to study the effectiveness of financial incentive mechanism in promoting the development of Chinese medicine health industry. The results show that the effectiveness of financial incentive mechanism in Chinese medicine health industry is not enough. The government should strengthen the construction of financial incentive mechanism in Chinese medicine health industry and pay attention to the regulation of relevant policies It is necessary to set up and implement the plan, so as to realize the modernization of the health industry of traditional Chinese medicine as soon as possible.

Study on Quality Evaluation System for Arterial Highways Based on Fuzzy Comprehensive Evaluation

2013 ◽  
Vol 438-439 ◽  
pp. 1952-1957
Author(s):  
Jie Li ◽  
Shao Wei Yang
Keyword(s):  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Objective Evaluation ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Expert Evaluation Method ◽  
Set Up ◽  
Quality Evaluation System

In this paper, the preliminary study of fuzzy comprehensive evaluation for arterial highway is made, the multi-level evaluation index system is set up, the process and formula of fuzzy comprehensive evaluation are proposed, and the practical application is explained by examples. To evaluate the highway engineering feasibility study, some methods are applied such as fuzzy comprehensive evaluation, analytic hierarchy process, expert evaluation method, etc. Thus it provides objective evaluation for the related management department to achieve the goal of improve the quality of highway preliminary work.

System Implementation on Fuzzy Comprehensive Evaluation of Slope Stability Based on GIS

2011 ◽  
Vol 243-249 ◽  
pp. 3007-3011 ◽  
Author(s):  
Jun Lan Zhao
Keyword(s):  
Slope Stability ◽  
Evaluation System ◽  
Large Scale ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Comprehensive Evaluation Method ◽  
Slope Engineering ◽  
Comprehensive Evaluation System ◽  
Set Up

Application and research of GIS in the slope engineering is one of the hot topics in this field. In this paper, the fuzzy comprehensive evaluation method of slope stability based on GIS was researched. It developed and set up a multi factor slope fuzzy comprehensive evaluation system by using slope database and can quantitatively classify and evaluate the slope stability in a quick and efficient way. This system can be at work on slope data management, inquiry, statistics and spatial analysis. It evaluated the fatality and vulnerability to the slope of a large scale coal mine as an example.

scholarly journals A Node-Charge Graph-Based Online Carshare Rebalancing Policy with Capacitated Electric Charging

2021 ◽  
Author(s):  
Theodoros P. Pantelidis ◽  
Li Li ◽  
Tai-Yu Ma ◽  
Joseph Y. J. Chow ◽  
Saif Eddin G. Jabari
Keyword(s):  
New York ◽  
Cost Function ◽  
Minimum Cost ◽  
Charging Station ◽  
Location Data ◽  
Feasible Solutions ◽  
The Cost ◽  
Flow Conservation ◽  
Charging Stations ◽  
Station Location

Viability of electric car-sharing operations depends on rebalancing algorithms. Earlier methods in the literature suggest a trend toward nonmyopic algorithms using queueing principles. We propose a new rebalancing policy using cost function approximation. The cost function is modeled as a p-median relocation problem with minimum cost flow conservation and path-based charging station capacities on a static node-charge graph structure. The cost function is NP complete, so a heuristic is proposed that ensures feasible solutions that can be solved in an online system. The algorithm is validated in a case study of electric carshare in Brooklyn, New York, with demand data shared from BMW ReachNow operations in September 2017 (262 vehicle fleet, 231 pickups per day, and 303 traffic analysis zones) and charging station location data (18 charging stations with four-port capacities). The proposed nonmyopic rebalancing heuristic reduces the cost increase compared with myopic rebalancing by 38%. Other managerial insights are further discussed.

scholarly journals The reserve of joint torque determines movement coordination

2021 ◽  
Author(s):  
Germain Faity ◽  
Denis Mottet ◽  
Simon Pla ◽  
Jérôme Froger
Keyword(s):  
Optimal Control ◽  
Cost Function ◽  
Degrees Of Freedom ◽  
Minimum Cost ◽  
Joint Torque ◽  
Movement Coordination ◽  
Trunk Motion ◽  
Additional Load ◽  
The Cost ◽  
Healthy Participants

AbstractHumans coordinate biomechanical degrees of freedom to perform tasks at minimum cost. When reaching a target from a seated position, the trunk-arm-forearm coordination moves the hand to the well-defined spatial goal, while typically minimising hand jerk and trunk motion. However, due to fatigue or stroke, people visibly move the trunk more, and it is unclear what cost can account for this. Here we show that people recruit their trunk when the torque at the shoulder is too close to the maximum. We asked 26 healthy participants to reach a target while seated and we found that the trunk contribution to hand displacement increases from 11% to 27% when an additional load is handled. By flexing and rotating the trunk, participants spontaneously increase the reserve of anti-gravitational torque at the shoulder from 25% to 40% of maximal voluntary torque. Our findings provide hints on how to include the reserve of torque in the cost function of optimal control models of human coordination in healthy fatigued persons or in stroke victims.

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