基于工控组态软件的PLC虚拟实验系统设计与实现

针对职业院校PLC实验硬件设备不足,实验项目有限,实验教学力度不断增强这种现状,提出了利用MCGS组态软件,设计并开发PLC虚拟实验系统的方法。包括虚拟实验系统的组成、实验项目的设计流程,PLC实验在虚拟实验平台的实现。     

电机设计与转矩评估虚拟仿真实验研究

为引导学生了解电动汽车电机基本设计方法,掌握电机关键参数对电机转矩、效率等性能的影响,提出并建设电动汽车电机设计与转矩性能评估虚拟仿真实验项目。该虚拟仿真实验项目克服了电机设计制造周期长,实验测试操作风险大,实体实验难以实现等不足,完整再现了电机设计、台架测试、道路测试等全过程,并将课程知识点巧妙融入到虚拟仿真实验中。该实验项目内容前沿、新颖,实验考核评价客观、公正,经过在线平台的开放共享,取得了良好的实施效果。     

导航信息模拟器及I／O多串口设计

本文详细介绍了综合导航系统中信息模拟器的工作原理，给出了导航信息模拟器的具体实现方法，并利用I／O多串口卡同时实现多路信息模拟。实验结果表明，该设计方法切实可行，缩短了项目研制时间。     

提高单片机教学效果的实验教学方法探讨

实验教学是单片机教学过程的一个重要环节，它对该课程的教学效果有较大的影响。引进案例教学方法，将一个单片机实际应用系统的设计与调试过程融入单片的教学活动中，并将该案例的设计与调试过程分解为多个层次性的实验项目，学生利用工程设计方法与设计工具，由简单到复杂逐步完成这些试验项目，是提高单片机教学效果的一种有效方法。     

MAX274在变压器铁芯在线监测中的应用

针对变压器铁芯接地电流在线监测项目中现场干扰比较严重的问题，给出了采用Maxim公司有源滤波芯片MAX274设计有源滤波器的方法。同时给出了实验结果以及应用注意事项。     

乐谱演奏为成果导向的数电实验思政探索

针对数字电路逻辑设计课程的思政元素融入问题，以经典教育学理论为指导，以实验项目体系设计为切入点，探索知识传授过程中工程素养训练、科学精神和人文情怀培养的有机融合，设计了以《我和我的祖国》简谱演奏电路为成果导向的实验项目体系，有利于学生在系列趣味性实验中体验数字电子技术的科学美感，对于数字电路相关课程的课程思政具有很好的实践意义。     

基于OBE的数字电路综合实验教学设计

本文按照OBE理念设计了一个综合设计类实验项目,选取篮球比赛场24秒倒计时器为设计任务,综合了计数器、定时器、分频器、显示器、译码器、控制器、报警器等多个内容并设计出多种方案。采用启发式、项目式、模块化的教学方法引导同学们完成实验项目。通过本实验项目的教学,学生具备解决复杂工程问题的能力,达到了教学目标。     

基于SystemC的系统级芯片设计方法研究

在分析当前系统级芯片设计方法的基础上，提出了目前新型系统级IC设计语言SystemC及其平台的设计思想及设计流程，并以具体项目RS编码器来实现和验证。实验结果表明，SystemC是一种很好的软硬件联合设计语言，它不仅可以帮助设计人员完成一个复杂的系统设计，还可以避免传统设计中的各种弊端，并提高设计效率。当然，如何更好地利用SystemC设计也将是EDA领域当前探索的一个重要方向。     

信息安全设计型实验的教学研究

本文结合笔者近年来的实际教学活动,深入探讨信息安全设计型实验的教学工作。本文首先介绍目前正在开展的信息安全设计型实验教学的基本现状,包括实验项目的设计、实验项目的组织管理、实验项目的过程管理等;我们还结合具体的教学工作,深入分析了教学工作中发现的具体问题,并探讨相应的应对策略。     

设计性实验与学生动手能力的培养

利用给定实验目的．实验要求和实验条件,由学生自行设计实验方案并加以实现的设计性实验形式,开展了电子技术课程中的“智力竞赛抢答装置的设计”等实验项目。并在教学中相应进行了一系列教学内容、教学方案和教学实施的改进,包括：加强基础训练、从易到难引导、提出明确而不局限的设计要求．提供完善的设计场所和服务．适当设计辅导及调整考核方法等。实践证明,上述改进方法是可行的,提高了学生的动手能力,取得了理想的效果,得到了师生的认可。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.