共查询到19条相似文献,搜索用时 796 毫秒
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本文重点研究了永磁起动机电机设计专家系统的总体结构、知识库、推理机和设计调整策略等关键问题。提出了一种直观自然的规则表达形式,定义了一套完整的知识库语法规则;建立了知识库开发系统,能对知识库进行编辑,修改和自动语法检查,提高了库开发效率;根据所确定的知识表达方式,开发了高效、灵活的推理机。在此基础上,开发了永磁起动机电机设计专家系统。 相似文献
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介绍了用专家系统技术解决企业电力实时调度中存在问题的方法:论述了知识库与推理机设计等问题。提出了一种将知识库与推进机分离,知识库自动编译生成规则,元规则的方法。 相似文献
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电力变压器故障诊断专家系统知识库建立和维护的粗糙集方法 总被引:40,自引:10,他引:40
提出了一种变压器故障诊断专家系统知识库形成的粗糙集方法,以解决专家系统较难获取完备知识的瓶颈问题。该方法从历史故障数据所形成决策表的约简出发,通过计算规则的粗糙隶属度,形成不同简化层次上符合置信度要求的节点网络规则集。用变压器故障信息与知识库中相应节点的规则集进行匹配,即使在气相色谱分析数据不完备的情况下,也能得到正确的诊断结果。通过推理机和数据库,实现对知识库的动态维护。大量诊断实例表明,该专家系统有效、灵活,具有一定容错能力。 相似文献
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设计了基于Qt/Embedded多线程机制的断路器故障诊断专家系统,提出一种综合故障仿真、故障模拟、数学模型分析结果及业内专家经验、文献资料等建立断路器故障诊断专家系统知识库的方法。针对断路器知识库的特点,选用产生式规则及框架表达知识,设计了专家系统的推理机制。最后,对专家系统的有效性进行了试验验证。 相似文献
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A fault diagnosis expert system for distribution substations 总被引:1,自引:0,他引:1
This paper presents a practical expert system for the diagnosis of various faults which may occur in distribution substations. The backward inexact reasoning process is applied for the fault section estimation using the knowledge of topology, the operation rules of protective devices, heuristic knowledge of well-trained operators, and instantaneous alarms. In this paper, the overall structure, detailed knowledge-base and the efficiency of general methodology based on topology are discussed. The proposed system has been tested in a local control center in Korea as a part of an intelligent guidance system for the SCADA operators 相似文献
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城市照明建设中要创造独具特色的城市夜景观,就需要在色彩体系规划与设计上遵循其自身的科学规律,即遵守一定的规律与原则。本文依据目前城市使用主流光源的现状给出了城市照明色彩体系规划与设计中各种情况下应使用的光色的定量范围,并提出了在此原则基础上城市照明色彩体系规划与设计的一些方式方法。 相似文献
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Schecke T. Rau G. Popp H.-J. Kasmacher H. Kalff G. Zimmermann H.-J. 《IEEE engineering in medicine and biology magazine》1991,10(4):38-44
The combination and aggregation of separate information sources to generate more ;intelligent' alarms using a knowledge-based approach is described. The approach gas developed as part of the knowledge-based anesthesia decision support system, AES-2, which monitors the patient's physiological state during anesthesia and eventually suggests therapeutic actions. Integration of the alarm system into a conventional information system is discussed. The state variable model used and the modeling of uncertainty are examined. The tools that support knowledge acquisition, design of knowledge-base prototypes. and test of the knowledge base of the AES-2 are described. A simulation example is given. 相似文献
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针对目前已有的仿真培训系统人工教学指导和手动评价的缺陷,通过总结电力系统运行操作规程,提供方便的语法规则来描述设备规则和任务规则,利用合理的知识表达方式描述规则之间的逻辑关系,将任务规则灵活地组成各种不同的操作任务,形成不断扩充的规则库,再利用数据库搜索技术将其任务实例化,形成学员操作任务的标准依据。开发了具有实时教学指导和智能评价功能的培训仿真智能评价指导系统,为电力系统运行人员提供了更智能更宽松的仿真操作运行培训环境,具有重要的工程实践意义。 相似文献
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I. V. Atanov V. Ya. Khorol’skii A. B. Ershov A. V. Efanov 《Russian Electrical Engineering》2017,88(8):475-479
The morphological method of synthesis of the structures of autonomous power-supply systems is presented, which is a further development of the sequential algorithms. A procedure of creating variants of the structure is given in the form of the initial information block, as well as a series of the sequentially performed operations in the formation of a tuple of electrical units with imposed restrictions being checked. The method is based on simulation of the main design rules followed by development of the design documentation. The theoretical content of the method is disclosed in the form of the initial information (axioms), rules of information processing, and logical formulas obtained as a result of applying the logical operations to the initial premises. It is recommended to use the calculation of the predicates as a mathematical basis making it possible to present the main theoretical premises of synthesis as the deductive axiomatic theory with a standard formalization. The main advantages of the proposed method are shown as specified by reduction in the time of finding of the functionally necessary structures by eliminating the need to carry out an exhaustive search for variants and using computers. 相似文献