如何进行型号项目的质量成本控制

在经营、科研生产以及质量管理中,要对型号项目的质量成本进行控制.不但要在设计和开发过程、生产过程、最终产品检验试验过程以及工艺设计过程中进行质量成本控制,而且还要在人力资源管理、质量管理以及市场调研等方面进行质量成本控制.型号项目的质量成本控制对企业的经营业绩的提高是非常重要的,不但可使企业在激烈的市场竞争中处于强有力...     

离子注入机Ⅶ Sta平台向掺杂工艺的无缝可变换性(英文)

离子注入机ⅦSta平台对≤130nm尺寸CMOS工艺在整个能量和剂理范围提供单片注入。这些注入机的特征是硬件和设计原理通用,并包含离子束注入角控制、剂量测定和终端站设计。这种方法对重叠剂量范围能使工艺可完全互换,并对引起制造所有权成本(COO)降低提供了最大的灵活性。一个完整工艺的透彻性需要剂量形貌特征精确匹配,并很好地说明这一能力、晕圈效应、VT和延展注入。此外,也证实了ⅦSta平台的单片设计消除了缺陷来源,确保了无风险工艺互换。     

离子法入机Ⅶ Sta平台向掺杂工艺的无缝可变换性

离子注入机ⅦSta平台对≤130 nm尺寸CMOS工艺在整个能量和剂理范围提供单片注入.这些注入机的特征是硬件和设计原理通用,并包含离子束注入角控制、剂量测定和终端站设计.这种方法对重叠剂量范围能使工艺可完全互换,并对引起制造所有权成本(COO)降低提供了最大的灵活性.一个完整工艺的透彻性需要剂量形貌特征精确匹配,并很好地说明这一能力、晕圈效应、VT和延展注入.此外,也证实了ⅦSta平台的单片设计消除了缺陷来源,确保了无风险工艺互换.     

离子注入机ⅦSta平台向掺杂工艺的无缝可变换性

离子注入机ⅦSta平台对≤130mm尺寸CMOS工艺在整个能量和剂理范围提供单片注入。这些注入机的特征是硬件和设计原理通用，并包含离子束注入角控制、剂量到定和终端站设计。这种方法对重更剂量范围能使工艺可完全互换，并对引起制造所有权成本(COO)降低提供了最大的灵活性。一个完整工艺的透彻性需要剂量形貌特征精确匹配，并很好地说明这一能力、晕圈效应、VT和延展注入。此外，也证实了ⅦSta平台的单片设计消除了缺陷来源，确保了无风险工艺互换。     

基于工频畸变技术的抄表系统

随着抄表系统和低压电力线通信技术的日益发展,利用低压电力线作为媒介的抄表方式得到了广泛关注。但由于我国低压配电网的干扰强,该方式的应用效果并不理想。为使抄表系统既节约成本,又满足通信距离的需求,设计了以双向工频通信技术作为通信手段的抄表系统。用二进制小渡变换进行信号检测,实验结果证实该方法有效。根据DL／T645—1997规约,设计出有中继功能的通信协议。     

GPRS技术在配电自动化中的应用设计

分析了远程抄表系统的组成、硬件配置、软件设计、工作原理、功能以及技术性能。给出了通过下位机和无线收发模块来采集、整理数据,并通过无线MODEM模块经GSM网与上位机进行通信,从而实现水电公司远程抄表功能实现方法。     

高速文化纸机变频传动系统设计

文章应用ABB系列变频器于造纸自动化领域,将ABB系列直接转矩变频器和西门子S7-300P LC组成核心控制装置设计一套文化纸机传动控制系统,通过软、硬件设计,较好的实现了文化纸机电气传动控制系统中的负荷分配、速度链、张力控制等功能。本套系统应用后证明:这种基于S7-300PLC和ABB系列变频器的全数字控制系统完全适用中、高速纸机的控制精度和反应速度等控制性能的需要。     

基于GPRS供水管网抄表系统的设计与实现

通过分析自来水供水主管网的特点,提出基于GPRS无线网络抄水表系统设计方案。该系统包括水量采集发送终端和数据服务中心两大部分。采集终端具有低功耗、高性价比、精确稳定的特点。水量数据通过GPRS传输给数据服务中心,数据服务中心进行数据的保存和WEB发布。设计从软、硬件角度出发,尤为适用对成本要求比较敏感的、对水量精准采集的终端,且数据服务中心稳定安全可靠,整套系统具有实用性和推广价值。     

电能抄收掌抄机在电能数据核抄系统中的应用

为有效防范智能电能表的质量风险,确保电能计量的准确、公平,保障用电信息采集系统的稳定运行,设计了一套数据核抄系统,电能抄收掌抄机做为一种便携式电能计量设备广泛应用在核抄系统中。主要介绍黑龙江电力公司核抄系统的工作原理,并着重介绍振中TP850及TP900型掌抄特点、核抄程序功能、程序流程图及现场应用情况。     

基于趋近律滑模最优控制的无人机撞网回收轨迹控制

针对舰载无人机撞网回收过程的下滑轨迹跟踪控制问题,在设计基于α β滤波器的轨迹控制外回路的基础上,着重设计了趋近律滑模控制与最优控制相结合的姿态控制内回路,提高了系统的稳定性并改善了系统的动态性能。以某小型无人机为例进行了撞网回收全过程三维数值仿真,仿真结果表明,该撞网回收着舰轨迹控制系统能够实现下滑过程飞行姿态及轨迹的精确控制,且能够在舰船甲板运动情况下实现较精确的撞网回收。     

A state model for the drying paper in the paper product industry

The purpose of this paper is to present a state variable model for the drying section of a paper-making machine. This model is based on the mass and energy balance relationships written for steam, paper, cylindrical heater wall, and moisture. These relationships give a set of six nonlinear partial derivative equations. The form of these equations changes somewhat from one cylindrical heater to another. The solution for this model yields the operating parameters needed to achieve the desired steam temperature while obtaining good paper drying. Boundary conditions are specified by a stochastic generator, and initial conditions are obtained by solving the static model. In this paper, the authors present only the state variable model for the paper drying, as well as comparing the obtained results with dynamic model results. Solving the set of differential equations with respect to the boundary conditions, they obtain the standard form of the state representation, which represents the dynamic version of the model used for process control. In conclusion, it can be said that the consistency of the model with experimental results seems to be reasonably good and can be used for process control     

浅析压合工艺改进对材料利用率的贡献

企业生存的动力都是以盈利为目标，PCB制造业流程长、物料多、成本高，为了增加公司收益，就要通过各种节能降耗的方式来降低成本。本文结合实际生产，从压合角度阐述通过工艺改进对产品成本降低的影响，对降低产品成本有一定的指导意义。     

A Lion‐Whale optimization‐based migration of virtual machines for data centers in cloud computing

The scalability, reliability, and flexibility in the cloud computing services are the obligations in the growing demand of computation power. To sustain the scalability, a proper virtual machine migration (VMM) approach is needed with apt balance on quality of service and service‐level agreement violation. In this paper, a novel VMM algorithm based on Lion‐Whale optimization is developed by integrating the Lion optimization algorithm and the Whale optimization algorithm. The optimal virtual machine (VM) migration is performed by the Lion‐Whale VMM based on a new fitness function in the regulation of the resource use, migration cost, and energy consumption of VM placement. The experimentation of the proposed VM migration strategy is performed over 4 cloud setups with a different configuration which are simulated using CloudSim toolkit. The performance of the proposed method is validated over existing optimization‐based VMM algorithms, such as particle swarm optimization and genetic algorithm, using the performance measures, such as energy consumption, migration cost, and resource use. Simulation results reveal the fact that the proposed Lion‐Whale VMM effectively outperforms other existing approaches in optimal VM placement for cloud computing environment with reduced migration cost of 0.01, maximal resource use of 0.36, and minimal energy consumption of 0.09.     

直流电机励磁与风机优化控制的研究与应用

由于非调速系统的直流电机背包风机及直流电机励磁控制在设计上存在缺陷,在轧机换辊及处理断带故障期间,背包冷却风机及直流电机励磁回路仍然正常运行,造成了大量的电能浪费,增加了吨钢电耗,制约了冷轧效益的提高。     

整流回馈型变频器在压力机上的应用

针对现在汽车工业快速发展,冲压生产线能耗电量浪费大的状况,如何提供有效的冲压生产线能量管理系统,为用户节省电费,降低经济成本是机床的最新设计理念。本文介绍了能量回馈存储型变频器压力机如何选型配置及进行有效的能量管理控制的。     

Drying and color characteristics of coriander foliage using convective thin-layer and microwave drying

Heat sensitive properties (aromatic, medicinal, color) provide herbs and spices with their high market value. In order to prevent extreme loss of heat sensitive properties when drying herbs, they are normally dried at low temperatures for longer periods of time to preserve these sensory properties. High energy consumption often results from drying herbs over a long period. Coriander (Coriandrum sativum L., Umbelliferae) was dehydrated in two different drying units (thin layer convection and microwave dryers) in order to compare the drying and final product quality (color) characteristics. Microwave drying of the coriander foliage was faster than convective drying. The entire drying process took place in the falling rate period for both microwave and convective dried samples. The drying rate for the microwave dried samples ranged from 42.3 to 48.2% db/min and that of the convective dried samples ranged from 7.1 to 12.5% db/min. The fresh sample color had the lowest L value at 26.83 with higher L values for all dried samples. The results show that convective thin layer dried coriander samples exhibited a significantly greater color change than microwave dried coriander samples. The color change index values for the microwave dried samples ranged from 2.67 to 3.27 and that of the convective dried samples varied from 4.59 to 6.58.     

Home Energy Management System Using NILM and Low-Cost HAN

Home energy management systems (HEMs) are used to provide comfortable life for consumers as well as to save energy. An essential component of HEMs is a home area network (HAN) that is used to remotely control the electric devices at homes and buildings. Although HAN prices have dropped in recent years but they are still expensive enough to prohibit a mass scale deployment. In this paper, a very low cost alternative to the expensive HANs is presented. We have applied a combination of non-intrusive load monitoring (NILM) and very low cost one-way HAN to develop a HEM. By using NILM and machine learning algorithms we find the status of devices and their energy consumption from a central meter and communicate with devices through the one-way HAN. The evaluations show that the proposed machine learning algorithm for NILM achieves up to 99% accuracy in certain cases. On the other hand our radio frequency (RF)-based one-way HAN achieves a range of 80 feet in all settings.     

CO2激光钻孔工艺优化方法研究

介绍了一种用CO2激光钻机开铜窗及打盲孔的新工艺,通过变换CO2激光钻机光束直径大小,达到CO2激光钻机开大窗,打小孔,从而控制孔型的目的。此新工艺可减少普通Cu—Direct工艺悬铜过大问题,也可避免干膜蚀刻开铜窗流程长,成本高等问题,针对激光孔孔底开裂失效缺陷也有所改善。     

网络能源统筹策略与智慧节能技术研究

随着5G基站和大数据中心两大新基建的爆发,运营商新一代网络进入了建设快车道,机房基站空调耗电巨大,其中5G基站能耗更是4G的2～3倍,对运营成本带来了巨大挑战.本文主要从"5+1"基站智慧节能技术和"两大"局站动力智慧节能技术两方面,阐述能源统筹管理策略,研究提升网络节能智能化和IT化水平,在保障用户感知和网络质量前提...     

台达变频器VFD-F在自动络筒机的节能应用

络筒机作为纺纱过程中的重要设备,近年来技术革新迅速。国外全自动络纱机在20世纪末已发展到第三代,具有精密卷绕、精密纺叠、精密定长、电子清纱、空气捻接、在线质量栓验及纱疵分级、节能降耗等特点。本文介绍了台达VFD-F变频器在自动络筒机负压风机节能上的应用。