共查询到19条相似文献,搜索用时 109 毫秒
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对具有随机参数的热机电耦合智能薄板结构提出一种包含4个位移节点、2个电势节点和8个温度节点的有限元模型,用平板型壳体单元模型描述其位移场,用线性插值方法描述其电势场和温度场.基于虚功原理导出了智能薄板的热机电有限元方程,通过各响应量对诸随机参数灵敏度的解析求解和一次二阶矩法,依次求得结构固有频率、固有振型、温变、位移以及输出电压等随机响应的数字特征.以悬臂智能板为例,将所得计算结果与Monte Carlo数值模拟法的结果进行比较,证明了所提出的处理方法可行且有相当高的精度. 相似文献
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基于多传感器信息融合的智能安保巡逻小车以单片机为控制核心,结合摄像头、温度传感器、火焰传感器、烟雾传感器和热释电传感器等检测外部环境的道路信息及环境信息,构成综合性的立体安全保障系统。阐述了智能安保巡逻小车的功能、结构,探讨了多传感器信息融合技术在提高智能安保巡逻小车环境识别能力中的应用。 相似文献
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针对日益广泛运用的户外监视技术,设计一体化转台结构,把前端设备高度集成在其内部,同时将长焦距CCD和被动热成像装置结合监视,根据运动目标图像识别算法,研究了一种适合复杂地形和气候的智能区域视频监视技术,对区域内运动目标进行智能跟踪和报警,并成功将该技术运用到海管保护领域,取得了很好实际使用价值。 相似文献
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基于补偿模糊神经网络数控机床热变形的控制 总被引:1,自引:0,他引:1
提出了一种基于补偿模糊神经网络的数控机床热误差预报模型,讨论了该模型的详细结构、模糊规则、训练算法及相关技术问题,并给出了智能预报结果和精度评价。 相似文献
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为推动航天器以物理试验为主导的模式向以物理试验与虚拟试验深度融合的模式转型,针对航天器试验过程中存在的周期长、成本高与其他制造环节海量数据共享困难等问题,提出基于数字孪生和多智能体的智能试验体系架构设计方法.该方法首先建立包含物理空间、数字空间和数学空间的智能试验任务分析范式,基于数字孪生和多智能体的智能试验体系功能建模框架;然后针对智能试验全要素、全过程、全业务的应用背景,设计试验资源、试验过程和试验服务3类智能体的结构模型,并对试验运行机制和技术流程进行优化.以某航天器系统级正样热试验为例搭建了智能试验管控平台,对该方法的可行性和有效性进行验证.结果表明,智能试验管控平台的应用,使得产品试验设计与实施总周期缩短20%、产品试验与工装设计精度提高15%. 相似文献
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《世界制造技术与装备市场》2019,(5)
<正>近日,合锻智能制造股份有限公司自主研发生产的2600吨高速间接热成形液压机在奥钢联金属部件(沈阳)有限公司联调成功,首件下线。近几年,超高强钢热成形件在汽车行业广泛应用。超高强钢热成形有直接热成形、间接热成形两种工艺,合锻智能成为同时掌握高速间接热成形、直接热成形液压机研发制造技术的企业。在刚刚结束的2019热成形产业大会上,合锻智能展示了旗下高速热成形液压机、HSHP高速液压机、SHPH伺 相似文献
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机电一体化中的智能结构 总被引:1,自引:1,他引:0
本文介绍了机电一体化发展的一条重要思路—智能结构的引入.阐述了智能结构的定义,并从技术集成的角度,对基于智能结构的机电一体化中的若干关键共性技术进行了分析和论述,分析了当前的技术状态和最新进展,提出了若干发展思路. 相似文献
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INTRODUCTIONThere are two characteristics of piezoelectriccomPOnents that permit them to be used as sensorsand actuators in advanced intelligent structure. Thefirst is called the direct piezoelectric effect that impliesthat when some mechanical force or pressure isapplied on a piezoelectric comPOnent, a charge/voltageis generated.The second is called the conversepiezoelectric effect that implies that when somecharge or voltage is imPOSed on a piezoelectriccomPOnent, the comPOnent will… 相似文献
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Dong-Hoon Kim Jun-Yeob Song Jong-Hyun Lee Suk-Keun Cha 《Journal of Mechanical Science and Technology》2009,23(10):2807-2813
In the near future, the foreseen improvement in machine tools will be in the form of a knowledge evolution-based intelligent
device. The goal of this study is to develop intelligent machine tools having knowledge-evolution capability in Machine to
Machine (M2M) wired and wireless environment. The knowledge evolution-based intelligent machine tools are expected to be capable
of gathering knowledge autonomously, producing knowledge, understanding knowledge, applying reasoning to knowledge, making
new decisions, dialoguing with other machines, etc. The concept of the knowledge-evolution intelligent machine originated
from the process of machine control operation by the sense, dialogue and decision of a human expert. The structure of knowledge
evolution in M2M and the scheme for a dialogue agent among agent-based modules such as a sensory agent, a dialogue agent and
an expert system (decision support agent) are presented in this paper, and work-offset compensation from thermal change and
recommendation of cutting condition are performed on-line for knowledge-evolution verification. 相似文献
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Gang-Min Lim Dong-Myung Bae Joo-Hyung Kim 《Journal of Mechanical Science and Technology》2014,28(8):2947-2952
Feature-based classification techniques consist of data acquisition, preprocessing, feature representation, feature calculation, feature selection, and classifiers. They are useful for online, real-time condition monitoring and fault diagnosis / features, which are now available with the development of information technologies and various measurement techniques. In this paper, an intelligent feature-based fault diagnosis is suggested, developed, and compared with vibration signals and thermal images. Fault diagnosis is performed using thermal imaging along with support vector machine (SVM) classification to simulate machinery faults, resulting in an accuracy level comparable to vibration signals. The observed results show that fault diagnosis using thermal images for rotating machines can be applied to industrial areas as a novel intelligent fault diagnostic method with plausible accuracy. It can be also proposed as a unique non-contact method to analyze rotating systems in mass production lines within a short time. 相似文献
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根据火电厂化学车间的自动加药系统的要求,介绍采用基于PLC、变频器和上位监控组态软件等组成,采用变结构仿人智能控制算法的实用监控系统,具有可靠性高、适应性强、功能强大等优点。 相似文献
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提出了一种新颖的声发射智能传感器网络系统。该系统为三层模块化结构。宽带声发射(AE)传感器采集被测对象的声发射信号;利用DSP实时提取结构缺陷的声发射特征参数并传送给智能终端;最终以无线/有线方式向用户传送有效信息。经实际应用证明该系统具有实时在线远程无损监测大桥。大坝,隧道等钢筋混凝土结构工程健康状况的功能。且系统采用了GPRS和互联网,降低了系统复杂性和成本。 相似文献
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Mini compressors are an integral part of intelligent clothing with active thermal protection and are used to activate the thermal insulation chamber. Therefore, it is necessary to know the operating parameters of the same. This paper describes the associated apparatus used to measure the air flow. In the paper are also given mathematical expressions for calculation of the volume of thermal insulating chamber and the possible number of thermal insulation chamber activation cycles. 相似文献