油管自动清洗生产线上下料控制装置设计

分析了油管自动清洗的工艺流程,对上下料机构、清洗机构和电气控制系统等进行了设计,构建了油管在线清洗控制装置,满足了油管清洗的要求.该装置具有自动化程度高、生产效率高、除垢干净等优点,适用于清洗堵塞的油管及各种化学成分的结垢物.     

物料清洗装置控制系统设计

为解决现有物料清洗装置系统成本高且调试困难的不足之处,设计了一种基于CAN总线的伺服控制系统,对现有的物料清洗装置控制系统做了进一步的改进和优化,通过CANlink总线对IS620P系列伺服驱动器进行控制,实现对伺服电机的控制,进一步控制丝杠的运动来实现对设备的运动控制功能,该系统采用了PLC的步进指令及状态编程法来编程,并不断地对设备进行调试和改进PLC程序,最终完成了对该物料清洗装置控制系统的设计,实现了物料清洗装置的运动控制功能,具有一定的实用性.     

可折叠式身体清洗装置设计

为解决人们单独洗澡时难以搓洗背部的问题,在研究了机械传动的基础上,基于慧鱼模型设计了可折叠式身体清洗装置.该装置由背部搓洗机构、升降机构、安装固定机构、淋浴机构和折叠机构五部分组成.通过程序对可折叠式身体清洗装置进行控制,实现了对人体背部的全自动搓洗与淋浴工作,以及装置的智能折叠与固定工作,简单方便.     

电液式大功率清洗装置的设计

对于污物重的大型、复杂零部件的清洗,已有的清洗方法难以实现大功率,为了解决这个问题,提出了电液式大功率清洗装置。其核心零件是2D四通转阀,通过控制2D四通转阀阀芯旋转可实现激振频率的控制,改变待清洗零件振动的快慢;控制阀芯轴向滑动可实现激振幅值的控制,改变待清洗零件振动的幅值。该装置采用2D四通转阀带动液压缸中的液压杆前后移动,从而带动清洗盒前后快速振动,剥离被清洗物表面的污垢,从而达到洗净目的,实现大功率清洗。通过数据采集系统实现对液压系统的控制、可视化实时数据采集、显示和保存。基于电液式大功率清洗的工作与控制原理搭建实验平台并做实验。结果表明：该电液式大功率清洗装置可达到下限频率为2669 Hz,实现大功率清洗。     

节水式道路绿化带清洗系统的设计

针对现有城市园林作业车对道路绿化带清洗方面水资源浪费严重、清洗设备落后以及城市空气净化等问题,对新型喷头设计、旋转机构设计、单片机自动化控制、测距、监控等方面进行了研究,提出了一套车用节水式道路绿化带清洗系统.通过实际操作进行了实验验证,实验结果表明,该系统能实施反映绿化带清洗时的工况,自动化程度高,给作业人员带来极大的便利.与传统人工高炮清洗装置相比,该系统可实现出水锥度、角度可调,从而控制喷洒范围,可针对不同宽度高度的绿化带进行作业,浇灌效果好,操作方法简单,无需专人操作,节省人力.     

DWG—218型污水溶解氧监测仪

介绍了污水溶解氧监测仪的结构、技术性能和应用.仪器由原电池型氧电极、溶解氧仪、自动清洗控制单元、自动清洗装置等部件组成.仪器能在水质恶劣的污水中长期连续地自动监测只需一个月校准一次.     

基于道路照明灯罩机械臂式末端清洗系统研究

为了实现路灯灯罩表面自动化清洗作业,设计了一种搭载于高空作业平台的机械臂式末端清洗装置。对末端清洗装置建模,并进行运动学求解论证了刷盘与灯罩间位置关系,采用MATLAB/Simulink仿真软件验证了臂架角度调节和压力控制的有效性。结果表明:机械臂式末端清洗装置可以实现刷盘与灯罩表面对准且保持稳定的刷盘与灯罩间压力,并实现自动化清洗功能。为路灯清洗装置自动化作业提供了理论依据。     

新型贻贝加工设备设计研究

传统的贻贝加工方法已经不能适应当前的发展需求,针对贻贝的加工自动化,文中提出了新型贻贝加工设备的设计原理。该设备分为传送装置、清洗装置、升降装置、蒸煮装置、去壳装置、去足丝装置和PLC控制系统。其中的清洗装置还实现了分级处理,蒸煮装置的水得以循环利用,大大降低了加工成本。此外,对该设备中的升降装置、蒸煮装置实施了自动化控制,实现了高度和温度的控制。该方案解决了传统贻贝加工方法效率低、人工强度大、加工设备落后等问题。     

基于矿石粉碎装置的储存、清洗及减震措施探讨

本文研究了基于矿石粉碎装置的储存、清洗和减震措施。在储存方面,提出了合适的储存环境选择、储存容器设计以及储存管理与监测方法,确保矿石质量和安全。在清洗方面,探讨了清洗工艺、设备选择、清洗剂控制和废水处理方案,实现了矿石的高效清洗和资源回收。在减震方面,分析了振动原因,选择了合适的减震装置,并通过振动测量评估减震效果,提高了设备的稳定性。本研究为矿石粉碎装置的生产提供了全面、可行的解决方案,具有重要的工程实践价值。     

水锤型液压系统管路清洗设备

文章针对现有液压系统管路清洗设备的不足之处,给出新的清洗方法,这将大大提高管路清洗的效率。设置在线检测装置,自动检测清洗油液的清洁度,控制清洗设备的工作进程。     

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...     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

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.     

交通荷载作用下桥梁结构参数识别方法

应用动力节点加载法,将作用在桥梁上的交通荷载转化为等效节点荷载,再用两步构造法识别结构物理参数.第1步,用Newmark-β方法变换结构运动方程,并用结构的加速度响应求得变换空间内的位移、速度和加速度响应;第2步,基于最小二乘原理,构造出变换空间内求解结构参数的递推式,进行结构物理参数识别.数值模拟结果表明,在交通荷载作用下,该方法能够快速、准确地进行桥梁结构参数识别.     

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...