中职院校机械类实训基地数字化建设之我见

本文通过以下几个方面探讨中职院校机械类实训基地的数字化建设：一是实训基地数字化建设的内容与功能,包括加快数据库建设、加强网络DNC建设、远程教学系统的建设和相关设备的管理等方面;二是加强机械类实训基地数字化建设的举措,通过建设数字化中心、远程监控系统,完善实训基地的远程教学系统,利用数字化技术帮助学生掌握操作要领,提高学生的实践操作能力。     

浅谈高职院校工业机器人校内实训基地建设

高职院校是工业机器人行业人才重要供给侧,专业校内实训基地建设水平是决定人才培养质量的重要因素之一。提出高职工业机器人技术专业校内实训基地建设的三点指导思想、应遵循的三条原则及建设体系;指出实训基地建设的具体建设内容并提供一种经济性建设方案,以及实际建设中应注意的问题。提出的建设思路、方案及应注意的问题,为相关高职院校专业建设提供参考。     

“产教融合实训基地”的校企共建模式探索

构建产教融合实训基地,是深化产教融合、实现职业教育高质量发展的关键环节。建设好该基地对提高学生满意度、教师认可度、企业盈利水平具有重要作用。不断加大和深化教育教学改革,是“产教融合实训基地”企业生产和学校教学实现有效平衡和协同发展的有效途径。教学改革不仅涉及课程体系的修订完善,也涉及专业教师队伍的建设,是“产教融合实训基地”实现教育教学培养目标和完成企业生产效益指标的有力保证。通过几年的实践,不断地推动了“产教融合实训基地”紧密结合学校办学特色和企业人才需求模式的发展,提高了学生就业竞争力和服务区域经济的能力,将人才培养和生产经营管理有机融合,达到了服务企业、服务社会、促进区域经济发展的目的。     

高职院校实训基地的内涵建设探究

通过透视近年来示范性高职院校建设的过程及实训基地建设的成果,认为要使高职教育能够为社会与企业输送更多的高技能人才,实训基地的内涵建设与提高是各高职院校必须研究的问题。     

新能源汽车运用与维修专业实训室建设研究

随着社会经济的发展,汽车行业对高校的汽车运用与维修专业人才需求量剧增,而相关的实训基地建设工作也受到各方重视。着力构建新型的新能源汽车运用与维修专业实训基地建设模式十分重要,它将决定我国的高技能人才培养全局,必须予以重视。本文基于我国新能源汽车运用与维修专业实训室的现状,对新能源汽车运用与维修专业实训室建设问题进行了研究,并从提高实训室发展水平的角度提出了改进措施。     

机电设备维修实训基地建设探讨

根据"校企合作、工学结合"的高职教育人才培养模式的本质要求,建设高水平生产性实训基地是高职院校实训基地建设的发展方向.文章以机电设备维修实训基地建设为例,阐述了学院示范性高职院校实训基地建设的概况.     

数控实训基地精益管理方法探讨

为了保障数控实训基地的运行更加安全、有序,培养学生规范做事、认真严谨的敬业精神,通过对实训基地的环境和工作责任采用"目视化"的方法进行精益管理。建设后实训基地的车间环境和设备完好率得到了提升,也提高了数控技能教学的效率和质量。     

高职院校实训基地建设与管理研究探索

实训基地是高职院校培养学生实践操作能力和职业素养的重要场所,近年来,国家对高职院校的投入日益增多,教育部对实训基地的建设和管理提出了许多标准要求,通过对实训基地建设和管理工作的分析,找出实训基地的建设和管理仍存在一些问题,提出适合高职院校长远发展规划的发展模式,创新拓展基地功能,实现实训基地建设和管理的标准化与规范化。     

高职汽车制造与试验专业实验实训基地研究

目前,正是我国汽车产业市场进一步发展的大好时机,汽车制造与试验专业的实验实训基地建设,要与汽车市场内所需要的工作相一致.这不仅要求高职汽车制造与试验专业的学生,需掌握一定的技能水平,也需要高职院校所配备高质量的实验实训基地,为适应我国汽车市场的发展而做出努力.汽车制造与试验专业的实验实训基地,在与汽车制造与装配工作相一...     

中职有色金属冶炼专业实训基地建设研究

依据“中国制造2025”提出的“人才为本”的基本方针和国家职业教育改革实施方案,各职业院校都在积极的建设各专业实训基地,国家中职类院校开设有色金属冶炼专业的院校不多,一些院校的该专业实训基地建设停留在表面,实训基地内设备设施老旧而且不足,无法满足当前专业的发展和实训课程的使用需求,还有一些院校没有该专业校内实训基地,单纯依靠校外实训基地供学生校外实习等。为此,针对中职有色金属冶炼这一专业的实训基地建设具有必要性,通过良好有序推进该专业实训基地的建设,能有效支持有色金属冶炼专业实习实训教学活动的开展,提升了师生在有色金属冶炼专业教学活动中实践操作动手能力,促进中职有色金属冶炼专业教学活动的系统创新,保障人才培养工作的高效化推进。该文针对中职有色金属冶炼专业实习基地建设的思想内涵进行分析,在系统探究和实践中解读实训基地建设的策略,提出实训基地的管理措施,以全面提高中职有色金属冶炼专业实训基地建设的效果,使人才培养工作的组织效能得到逐步优化。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.