在哈密顿(Hamilton)力学与复合材料层合板理论的基础上,针对复合材料薄壁箱梁剪滞剪切效应问题,提出了一种可考虑各种耦合效应的全新理论分析方法.在Hamilton体系下,通过勒让德(Legendre)变换引入对偶变量,将问题的高阶微分控制方程转化为Hamilton对偶方程.采用两端边值问题的精细积分法对复合材料薄壁箱梁进行计算,将用所提方法计算的算例结果与试验结果、有限元软件ANSYS的分析结果进行对比,结果表明所提方法是正确、可靠的.

The principle of magnetic survey method to detect the contents of residual austenite is introduced,and the content of residual austenite of a large number of bearing components made of steel GCr15 is detected.The magnetic survey method features good stability and high sensitivity through comparison with X-ray diffraction method,which is suitable to detect content of residual austenite.

The controller unit of this mini-machine control-system is composed by Atmega8 MCU,which has a high capability and low price, the apperceive pieces of pipe-mini-machine in the pipe collects inter-pipe surroundings information,then upper computer deals with these information,Atmega8 MCU can read and store these data,and emit velocity control signal by wireless data transfer,velocity sensor incepts these signals,then operates with PID,then changes the slgnal into voltage signal,and the signal will control the electromagnetism circuit,achieve all kinds of actions.The Atmega 8 MCU has a high velocity to execute,handle code rapidly,the hardware circuit and periphery circuit are relatively predigest,and easy to debug.

The instrument system in the HTV,using the MC9S12DP256 as its core processor unit,adopted embedded technology and metrical technology of virtual instrument to analyze,process and display all kinds of information of vehicle condition synthetically.After upper computer deals with the information of vehicle condition which it has received,it will display on the traditional dial instruments the processed information,such as engine rotation speed,mileage,the volume of oil and water temperature,etc,and synthetically on the LCD monitor the property of the HTV.The controller-cored dashboard system simplifies the process of development and enhances the real-time of the system,boasting its rich content and easy-read information.

This paper introduced the tobacco cutter line of cigarette factory.PLC was adopted as working procedure controller to realize the automation of the system.SIEMENS S7-300 PLC was adopted as the controller.The controller system was PID regulates,man-machine interface was touching-screen and the high precision discharger was used,and the implement mechanism was made of air-force-proportion-regulate-valve and the relevant electric-transform-apparatus.So this system has high reliability,the data are accurate and reliable.It is operated simply and clearly.

The chaotic neural network was applied to the shortest path problem,dynamic route guidance network routing algorithm based on transiently chaotic neural network dynamic route guidance was presented.Result of simu1ations shows that the application of the TCNN algorithm to dynamic route guidance system to solve the best path problem can always converge to the globally optimal solution and has higher capability for searching than HNN.The shortest path could be found for single and multiple packets request.

The structure and basic theory of automatic inclinometer system was presented,which take advanced quartz servo-accelerometer as sense organ.Examples testify that it can require need measure precision.The system has many merits,such as high measure precision,better anti-jamming character,light mass,low power cost and it fits fieldwork for power supply by battery.It can't affect construct as measure and can't be affected by weather.Also it is operated so convenient,spry and agile.

随着我国基础建设的大力发展,涉及到了许多岩体土建工程。如何准确分析土体边坡的稳定性、提出既经济又安全的最优化方案,是人们长期以来不断探索的关键技术问题。论文介绍了基于石英挠性伺服加速度计作为敏感元件的自动测斜装置,介绍了该仪器的工作原理、组成及各部分电路的特点,通过实践表明,该仪器测试数据可靠,操作简便。

An instrument for residual stress of crankshaft was developed on the basis of Barkhausen noise. The principle and algorithm of neural networks,and how to build the relationship between BN and stress. It was found in the test that the testing data was exact and reliable.

The temperature examining device consists of the preceding extremity system which collects outside temperature to Chip Microprocessor and the PC set which is backstage supporter.It achieves the longrange collecting.The device collects the outside temperature by the temperature sensor,and performs A/D conversion by the digital potentiometer 9313.The Chip Microprocessor system transmits the data to the PC set through the RS-232 interface.The PC set controls the Chip Microprocessor to achieve data's real time receiving,saving and drawing out visualized chart upon display.It can make the regulation work automatic.Compared with general methods using A/D→digital control→D/A,it has many advantages such as simple structure,user-friendly,higher measurement accuracy and reliability,which can be widely used industrial temperature measurement.

According to my working practice and management theory,this text explores the applying of institutionalized management and humanization management in university students' management.We consider that following questions should be minded,such as the establishing of regulations;several things that should be minded in humanization management;the relation in them should be institutionalized management is basis,humanization management is soul;they should be mutually supplement.

An instrument for residual stress of crankshaft was developed on the basis of Barkhausen noise.The composition of the instrument was introduced,as well as the special feature of every part of the instrument.It was found in the test that the testing data was exact and reliable.

对SPX488型汽车尾气分析仪的工作原理和使用进行了简要介绍.根据该仪器对采集的数据需全部人工分析处理的实际情况,开发了相应的通讯及数据处理软件,实现了计算机自动分析处理.

通过理论分析和仿真实验,证明了短路两相的电流大小是否相等与电路结构和运行状态有密切的联系.