Design & Research of the Pneumatic Control Disassembling Machine for Watch Battery

近些年，随着国内劳动力成本不断提升，制造业对工业自动化的需求也越来越强烈。同时由于制造业产品的多样性和复杂性，企业对自动化设备的要求也在不断变化，这极大的促进了非标自动化技术的发展和进步。拆卸机作为一种非标自动化设备，虽然应用范围小，但其经济价值和实用价值不容忽视。 本论文的选题是根据某钟表企业的需求而提出的。该企业在实际生产中，需要将手表机芯中实验用的锂电池拆卸下来。由于工作量巨大且劳动力紧张的原因，企业急需研发电池拆卸机来处理该问题。 论文中详细表述了一台气动电池拆卸机的设计和研发过程。在表述顺序上，包括系统总体设计方案的研究和确定，机构设计前的理论研究与铺垫，机械结构的研究与设计，电...In recent years, with the increasing labor cost, the demand for automatic manufacturing has become more and more strong. Because of the diversity and complexity of products, the requirement of automatic equipment is also changing, which greatly promotes the development and progress of non-standard automation technology. As a kind of non-standard automation equipment, disassembly machine has the ec...学位：工学硕士院系专业：物理与机电工程学院_机械工程学号：1992010115274

基于MD_Nastran的双卡套管接头性能分析

双卡套管接头各组件形成密封的过程是典型的边界条件高度非线性问题。文中基于Md_nASTrAn的SOl600模块对某型12MM内径的双卡套管接头进行了隐式非线性分析,确定了该型双卡套管接头形成有效密封后各组件的应力大小、应力分布等关键性能参数,为该型双卡套管接头的改进和后续研发提供了有益的参考

Design of the High-efficiency LED Driving Circuit Based on Automatic Gain Control(AGC)

设计了一款具有高效率的发光二级管(lEd)驱动芯片,采用自动增益控制(AgC)原理,通过内部的峰值电压检测和自动增益调节反馈控制机制,实现幅值稳定、相位相同的正弦包络电压输出,为原边电感电流控制提供比较阀值电压,实现脉宽调制(PWM)耦合的负载恒流输出,进而提高lEd发光效率.芯片的工作电压适合于宽电压范围,在交流85~265V范围内,输出表现了良好的恒流特性,实现高达95%以上的功率因数(Pf)值,lEd的工作效率达80%以上.A high-efficiency chip of LED driver is designed.It is got a constant current output of PWM modulate,through technology of the control mechanisms of internal peak voltage detection and the automatic gain adjustment,to achieve a stable amplitude and the same phase sinusoidal envelope voltage output,which supply the comparison threshold voltage for primary side inductor current control by principle of the automatic gain control(AGC).The operating voltage of the chip is suitable for wide voltage range applications,the output performance of the constant current characteristic has a PF value up to 95%,LED work efficiency more than 80%,within the range of 85Vto 265V

基于多传感器信息系统的三轮全向机器人的研究

本文介绍基于多传感器信息系统的三轮全向机器人的研究,建立了机器人三轮全向移动模型,底盘的三个全向轮呈120。分布,可实现机器人在二维平面内的任意方向移动;设计了多传感器信息系统,通过陀螺仪实现机器人的位姿信息获取,通过双编码器的正交模型实现机器人的位移信息获取,通过机器视觉实现目标物体的甄别,最后给出机器人识别篮球的案例实验结果

塔里木河流域适应气候变化的水热调节技术研究

本成果来自于国家科技支撑计划项目“全球环境变化应对技术研究与示范”之06课题“典型脆弱区域气候变化适应技术示范”之04专题“西北生态脆弱区适应气候变化技术示范”(2007BAC03A06-04)。课题于2007年11月立项,于2010年11月30日通过国家科技部的验收。针对塔里木河流域气候变化影响关键科学问题,建立了山区水库—平原水库联合调节、绿洲地表水—地下水联合开发、膜下滴灌的作物立体种植模式、下游生态恢复与洪水(融雪水)沙漠造林生物固碳等大型原位可控的技术示范基地;构建了区域气候变化优势适应技术筛选与评估流程,集成了塔里木河流域气候变化适应技术行动实施方案与功能区划图,首次提出了塔里木河..

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel