基于H8/3048F智能模型车出入库功能设计与应用

基于H8/3048F单片机设计了一款具有自动出入车库功能的智能模型车.单片机H8/3048F根据模型车前后两排光电传感器检测的赛道与车库信息判断模型车的当前位置,确定行驶状态,控制电机转速和舵机转角,从而使模型车精确快速的出入车库.本文分析了模型车倒车出库时的前轮转向特点,同时针对模型车出入车库特点提出了闭环PD调节的车速控制与开环PWM控制舵机转向的控制策略.试验结果证明,利用本控制策略的模型车能够快速平稳精确地出入模型车车库,具备响应速度快、抗干扰能力强等特点,具有一定的参考与应用价值.     

基于H8/3048F-ONE的瑞萨MCU模型车技术分析(一)——CPU主基板、红外传感器及输入程序设计

瑞萨超级MCU模型车大赛是我国规模最大的大学生技能活动"全国大学生ITAT技能大赛"的系列赛事之一.本文基于H8/3048F-ONE芯片对CPU主基板、红外线传感器及输入程序设计做了技术分析.作为瑞萨MCU模型车制作的前端输入部件,红外传感器的赛道识别、信号输入环节是模型车的重要组成.     

一种基于80C196MC微处理器的交流伺服系统

提出了一种用80C196MC单片机控制的交流伺服系统设计方案.该方案利用80C196MC中的WFG实现了SPWM控制信号的产生、A/D转换器实现电流的采样、EPA实现了速度和位置的检测,同时系统采用了先进的智能功率模块ASIPM产生电机的三相交流电源.     

基于H8/3048F-ONE的瑞萨MCU模型车技术分析（一）——CPU主基板、红外传感器及输入程序设计

瑞萨超级MCU模型车大赛是我国规模最大的大学生技能活动“全国大学生ITAT技能大赛”的系列赛事之一.本文基于HS/3048F-ONE芯片对CPU主基板、红外线传感器及输入程序设计做了技术分析.作为瑞萨MCU模型车制作的前端输入部件,红外传感器的赛道识别、信号输入环节是模型车的重要组成.     

一种多功能油田站场智能监控仪的研制

介绍了一种新型多功能油田站场智能监控仪 ( JZK- D)的设计及实现 .系统硬件设计基于Intel MCS80 C2 5 1单片机和 ALTERA EPM71 2 8EPLD器件 ,软件设计基于 μC/OS- 实时多任务嵌入式操作系统 .建立了单井计量控制逻辑的状态机模型 ,并用 AHDL语言进行实现了该模型 .该监控仪具有监控功能完备、人机界面良好和网络支持功能强大等优点     

基于H8/3048F-ONE的瑞萨MCU模型车技术分析(二)——驱动马达与伺服舵机

本文基于H8/3048F-ONE芯片的应用对模型车驱动马达与伺服舵机做了技术分析,并给出了相应的程序设计.作为瑞萨MCU模型车制作的重要组成部件,马达驱动基板需要给左、右侧两个马达以及伺服舵机提供足够的动力和准确的信号指示,其核心技术是PWM的脉冲输出.     

基于单片机的智能RLC测试仪

本文主要论述了基于凌阳SPCE061A单片机的智能RLC测试仪的设计,利用单片机对R、L、C等参数进行测量,可以充分利用单片机的运算和控制功能,方便地实现测量,使测量精度得到提高。同时用软件程序代替一些硬件测量电路,可在硬件结构不变的情况下,修改软件以增加新的功能。能够很好的完成对RLC参数的测量,以满足现代测控系统的需要。     

测量气体绝热指数的智能仪器研制

设计了一种用单片机控制的新型测量气体绝热指数智能实验仪.该智能仪器的硬件核心部分是MCS51单片机,外围电路包括传感器、A/D转换器、键盘和LCD显示模块等四部分.传感器将压力、温度转换成电学信号,A/D转换器对这些信号进行数字化转换,单片机对采集的压力和温度数据进行简单处理,再送入具有图形和文字显示功能的LCD显示模块,实现对压力和温度的实时显示.键盘电路完成实验人员对仪器的设置和操作.单片机程序设计使用模块化设计方法,便于以后对实验装置的进一步完善.     

高精度模数转换器ADS1211

ADS1211是一个具有24位精度并内含自校正∑-Δ转换器、二阶∑-Δ调制器、可编程数字滤波器和微处理器的串行A/D转换器.该文主要介绍了在单片机的控制下,利用ADS1211实现高精度A/D转换的方案.     

船舶蓄电池智能化节能快速充电及控制

详细介绍了一种由单片机控制智能晶闸管模块(ITPM)和电力电子器件GTO实现可通信智能型充电机的硬件、软件及电路结构设计的方案，利用87XC51双单片机进行编程控制，采用充电、停充、放电、停放、充电循环控制和去极化电压，实现快速充电节能，结果表明，该充电机具有较好的充电性能，利用由单片机控制GTO通断，实现对UPS和直流负载的供电控制，该装置提高了船舶电力系统的可靠性和自动化程度，具有实用性。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with