英文翻译格式解析

英文资料翻译

系别软件与服务外包学院. 专业通信网络与设备. 班级通信0901 . 学生姓名韩丽司. 学号090969 . 指导教师陈佳.

二○一二年二月

Based on the data fusion of intelligent fault diagnosis system 1. Primed words

Multi sensor data fusion technology was initially mostly used in the military field, but the computer, network and communication technology the rapid development that the application range is expanded greatly. In recent years, many scholars of the data fusion rules and strategy theory to conduct extensive research and improvement. While the artificial intelligence technology research makes the data fusion to improve the knowledge of target decision height, the auxiliary function is greatly strengthened. At the same time, with the industrial technology make a spurt of progress, an intelligent fault diagnosis system of demand in quantity and quality greatly improved. As the intelligent fault diagnosis system for the most basic, the most effective information processing tools, multi sensor data fusion technology development will promote the progress of intelligent fault diagnosis system.

2. Multi sensor data fusion and improved D - S theory

From a military application perspective, data fusion is to make full use of different time and space of the multi sensor information resources according to the time sequence, using computer technology to obtain multiple sensor observation information in certain criteria to be automatic, integrated analysis, control and use, access to the object consistency of interpretation and description, to complete required decision-making and estimation tasks, allowing the system to obtain than its components the better performance of H3. The author uses the present generally agree that the pixel level, feature layer and decision layer three layer fusion structure. The decision level fusion target is to achieve the target situation diagnosis and assessment, applied to the main Bayesian probability reasoning and D S evidence theory. The data fusion method to solve the uncertain information processing problems, D - S method with Dempster - Shafer evidential theory as a foundation, its core is Dempster synthesis rules, for uncertain information expression and synthesis provides natural and robust method. Will force S evidence theory is used for multi sensor fusion, obtained from the sensor related value is the theory of evidence, it can constitute the targets to be recognized patterns of belief function assignment, that each target model hypothesis of credibility, each sensor consists of an evidence of group.

Multi sensor data fusion is through D S united rules to combine several evidence group to form a new integrated evidence group, called the D S association rules with each sensor of confidence function distribution formed by fusion of confidence function distribution, which is target mode decision-making provide comprehensive and accurate information of n ]. In practical application, D - S method requires evidence of independence and evidence combination rule theory support, and the calculation of potential exists the problem of combinatorial explosion, so only the single fusion methods are difficult to obtain ideal fusion effect.

D - S evidence theory has does not require a priori probability advantages; expert