共查询到18条相似文献,搜索用时 250 毫秒
1.
李翔晟 《中南林业科技大学学报(自然科学版)》1997,(4)
汇集相当数量的汽车变速器故障诊断专家知识和经验,采用YHHPROLOG语言编写汽车故障微机诊断程序,建立了一套汽车不解体微机诊断系统.系统采用较成熟的知识表达方式──“产生式规则”来组织和描述故障知识,引进了“故障程序”和“希望因子”用以表征某故障的严重程序和某故障原因对这一故障出现与否的影响程度.从而使诊断过程更为便捷有效.该系统的根据用户提供的信息和事实,以人—机对话方式,运用系统存储的专家知识和经验,进行推理判断,快速准确地诊断出故障,并提供维修指南.该系统可减少汽车平均修复时间. 相似文献
2.
3.
根据液压系统故障诊断的特点,开发了应用于液压故障诊断的智能型专家系统,该系统可实现液压故障分析、推理和诊断的在线处理,系统的逻辑推理严密,分析详尽准确,操作简单,具有良好的实用性及可操作性。 相似文献
4.
为了实现对生产现场热磨制浆系统的有效检测,提前预防设备故障的发生,开发了热磨制浆系统远程在线监测及故障诊断专家系统。该系统将计算机技术、传感器技术、通信技术、数据库技术与设备诊断技术相结合,以可编程序控制器(PLC)和InTouch10.1组态软件为开发平台,对热磨制浆系统现场的各项参数进行采集、分析和实时反馈。运用关系型数据库系统SQLServer和CLIPS专家系统工具建立相应的故障诊断规则,实现热磨制浆系统远程监测及故障诊断专家系统的设计,提高了热磨制浆系统运行的安全系数和对故障的分析能力,可满足用户对在线检测及故障诊断的需求。 相似文献
5.
根据林分经营的特点,提出了林分经营专家系统的总体设计框架、知识获取和知识表达方式、推理机制以及不精确信息处理方法,并开发了杉木人工林林分经营专家系统原型,本系统根据用户所输入不同的年龄、林分密度和地位指数就可作出相应的林分经营决策,使森林经营决策科学化. 相似文献
6.
7.
8.
9.
葡萄栽培管理专家系统的应用研发 总被引:4,自引:0,他引:4
葡萄栽培管理专家系统应用系统工程的原理和知识工程的方法手段 ,在葡萄专家和种植大户多年来葡萄栽培管理科研工作和种植经验的基础上 ,结合当前国内葡萄生产和市场需求动态调查 ,进行大量且多方面的资料收集 ,采用先进的计算机人工智能技术和专家系统建造技术进行系统集成 ,开发出各种栽培管理功能模块 ,建立一个综合性的葡萄栽培管理专家系统。该系统采用国家农业信息化工程技术研究中心开发的PAID4 .0农业专家系统开发平台 ,主要进行了葡萄栽培管理专家系统知识库的构建 相似文献
10.
介绍了森林病虫害防治专家系统中推理机部分的设计思想与设计方法,针对森林病虫害防治的特点以及系统运行的需要,在推理过程中实现了推理中断并向用户询问新证据的功能,体现了专家系统的人性化与智能化。 相似文献
11.
Trevor H. Booth 《Agroforestry Systems》1990,10(1):33-45
There is a need for improved methods to suggest whether a particular tree species is worth testing at a new location. A method
is proposed which compares the climatic similarity of a potential new location with conditions within a species natural distribution,
and identifies if similar sites exist. When information is available, climatic comparisons can also be made with successful
sites of introduction outside the natural range. A program is described which carries out these comparisons and Eucalyptus citriodora is analysed as an example. It is concluded that the method offers advantages over systems which describe climatic requirements
simply as ranges of suitable conditions. The importance of soil factors is recognised and ways in which these could be analysed
along with climatic factors are noted. The integration of the similarity analysis into existing databases or its development
as part of a complete expert system are discussed. 相似文献
12.
为了使园林从业者能够准确便利地掌握河北省常用园林树木基本情况和实际应用知识,对河北省内城市常用园林树木的基本信息、树木养护管理、树木图片进行了搜集整理,并总结了树木的常用配置应用、古树名木知识等,根据园林树木学和景观设计学等相关学科理论基础,构建了专家系统知识库。在知识库的基础上,采用MVC模式,使用JAVA语言编程、MySQL数据库进行数据存储,采用B/S架构,应用Tomcat服务器,构建了河北省城市园林树木网络专家系统,其中包含树木信息查找和树木应用推理等方面的功能,以期为使用者提供这些方面的功能支持。 相似文献
13.
14.
Pessimistic forecasts often suggest that widely spaced trees enjoying free growth (no competition with other trees) will fail
to provide high quality timber. This challenges the temperate agroforestry practice of planting widely spaced trees to produce
high quality timber. We analyse tree growth data from recent temperate agroforestry plantations aged three to eight years,
featuring low tree plantation densities (50 to 400 stems ha−1), the association of trees with intercrops (silvoarable systems)
or animals (silvopastoral systems), and the use of plastic shelter tubes to protect trees (1.2 to 2.5 m high) and avoid damage
by cattle or sheep in pastures or facilitate maintenance in silvoarable systems. The plantations are located in climates ranging
from Mediterranean, dry central temperate plains, cold and wet central uplands to mild oceanic areas. Some plantations included
a forestry control (high density of plantation, no tree shelter, no intercropping nor grazing). Trees were evaluated for height
and diameter growth and stem form (straightness and absence of knots). Trees in most agroforestry plots grew satisfactorily,
often faster than in forestry control plots. In some experimental plots, average annual height increments as high as 1 m and
diameter increments as high as 1.5 cm were observed. Few agroforestry plantations were unsuccessful, and the reasons for the
failures are discussed: animal damage in silvopastoral plots, but also a wrong choice of tree species unsuitable for local
soil and climate characteristics. From these early results we can formulate some guidelines for designing future agroforestry
plantations in temperate climates, concerning tree density, use of tree shelters and care required for widely spaced trees.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
15.
16.
17.
一个基于Web服务器的分布式面向水源保护林造林设计的专家系统。从水源保护林的造林设计需求,专家知识的表示,数据库的建立,推理引擎的驱动,客户端界面的设计等方面介绍了系统的实现。 相似文献