In this study, a novel valve-controlled adjustable shock absorber is presented along with its working principle and valve system behaviour. According to the theory of hydraulics and elasticity, the physical parametric model for the shock absorber force characteristics was established then simulated in MATLAB software environment. The simulation results are compared with the shock absorber bench test at different control currents under the QC/T545 test standard to demonstrate the proposed model's validity. On the basis of the proposed and validated shock absorber model, the influence of the solenoid valve proportion orifice radius on damping characteristics was analysed and summarised to potentially offer reference for the future studies.

该系统主要由51单片机和驱动芯片组成,采用温湿度传感器、光传感器进行对室内环境的检测,借用液晶显示屏和步进电机,完成时间、温湿度等信息的显示和窗帘的开合.它将替代传统式窗帘,实现家居的智能化操作.

Because of the complicated nonlinear behavior of automobile air suspension, the global nature of hysteretic nonlinear dynamic system of air suspension system is studied.Using the nonlinear air spring and nonlinear tire model based on measured data, the nonlinear spring and damping forces of automobile suspension are analyzed.The vertical nonlinear dynamic model of two degrees of freedom is set up, and the chaotic motion of the nonlinear suspension system is studied.The simulation is conducted under the excitations of single frequency sinusoidal pavement and the system responses are obtained, in which the bifurcation diagram, Poincaré mapping, Lyapunov exponent diagram are analyzed respectively.The result shows that there are chaotic phenomena in the automobile nonlinear air suspension system, which appear as pitchfork bifurcation, and the typical period doubling bifurcation is one of the ways in which the system is from order to chaos.

系统主要由GSM短信模块和单片机组成,采用主动式红外传感器和烟雾传感器对室内环境进行检测,借用于最稳定、最常见的GSM移动网络,以最直观的短消息形式,直接把报警地点的情况反映到使用者的手机屏幕上,它代替传统防盗网防盗窗,实现防火、防盗作用.

《微机原理与接口技术》课程是我院电气自动化技术专业的基础必修课程，这门课理论性强，知识点比较抽象，按照传统授课方式教授，效果一直不好。本文通过对课程的内容、授课方式等方面进行一体化教学改革的探讨，达到增强课程知识点的针对性、任务性，使学生能更容易学习和理解。

随着社会的进步和科技的发展，人们对汽车安全性、舒适性、排放性要求的日益严格。汽车超声波测距防撞报警系统能够实现在汽屛车行驶过程中实时测量与前方物体的距离，并通过液晶进行显示，当距离小于设定的安全距离时，蜂鸣器发出报警声音，提醒驾驶员注意行驶安全，系统可以通过按键设置报警距离。本设计的电路设计合理简单、工作稳定、性能良好、检测速度快、计算简单、易于做到实时控制，并且在测量误差方面能够达到简单工业实用的要求。此测距系统具有可靠性好、体积小、价格低廉等特点，能够大大提高行车的安全性能，为驾驶员提供了相当的方便。

《微机原理与接口技术》课程是对微机硬件技术和软件技术有机结合的学习，其中软件编程若采用汇编语言，则知识点比较抽象，学生反映掌握效果一直不好。本文通过利用PROTEUS仿真软件，对汇编语言的知识内容、授课形式等方面进行任务引领的教学改革的探讨，达到增强课程知识点的针对性、任务性，使学生能更容易学习和掌握。

电机拖动实验平台在《电机及电力拖动》课程学习中具有相当重要的作用，本文针对该课程理论性强、知识抽象、难于理解掌握的特点，利用现有实验平台，理论联系实际，通过具体的案例来展现其在课程学习中的作用。

基于硬件的深度图实时提取系统可实现深度图的实时提取,但由于硬件结构的局限性不能像软件那样实现较复杂的匹配算法,会产生较多误匹配.在深度图实时提取系统上设计和实现深度图后处理功能,先对视差结果进行匹配唯一性检测,再根据需要针对左右视图对应的视差结果分别设计两种左右一致性检测方案,最后利用正确的深度值进行空洞填充.实验表明该设计和实现的后处理功能可与深度图的提取在同一系统上实时地进行,并能得到质量较好的深度图.

微机原理实验箱在《微机原理与接口技术》课程学习中具有相当重要的作用,本文针对目前实验箱普遍存在的硬件灵活度不高的现象,对现有的实验箱进行部分改造及进一步应用,通过具体的案例来展现其在实际学习中的作用。

视觉概念检测技术是一种对图像进行检测、管理及分类的有效方法,而检测算法需要有高质量的图像集作为训练集来测试算法的可行性及精确性。本文介绍了理想的图像集应具备的特性及常用的图像集,为视觉概念检测的研究提供有价值的参考。

"Automatic Control Theory" course is a of vocational electrical automation technology professional core professional courses, has a strong theoretical abstract knowledge point. The simple classroom theory to explain and experimental teaching methods, it is difficult to allow students a deep understanding and mastery of the knowledge of the course, it is difficult to improve the practical skills of the students do not meet the characteristics of higher vocational teaching. In this paper, MATLAB software simulation, to enhance the image of the knowledge in the course explains its specific and easier for students to learn and understand.

Visual concept detection is a functional way to detect, manage and classify visual information. No matter it is image retrieval or video retrieval, the system can distinguish object and scene concepts by learning image descriptions itself. However, when the viewing conditions is different or the viewing points is changed, all these will lead to a various result of the image description which collect by the system. So an effective visual concept classification methods should be invariant to different and accidental recording circumstances or conditions. This paper has analysis and summarize the current research status and detection methods of Visual concept detection technologies. Including such methods: salient point detection; social tagged images as a training resource for automated concept detection; extracting distinctive invariant features from images; cross-domain kernel learning method for visual concept detection, etc. And in the end, this paper seeks to unravel the effective when using MIR Flickr in visual concept detection. After comparasion, we want to find the advantages and disadvantages of these typical methods, and hope to give a valuable reference to the following researchers who is interested in visual concept detection and classifications.

As the rapid developing of transportation and road construction in China, how to get a precise, quick and comprehensive measuring result of various road surface parameters, has become to one of the most important key subjects during the highway and urban arterial roads construction. This paper presents an asphalt road surface measuring system, which is mainly used for detecting the roughness and rut depth parameters of road surface. The whole system constitutes by three parts: image acquisition system, image processing system and cross-section analysis system. The image acquisition system uses linear laser and CCD video camera, after calibration, the image precision can reach less than 0.1mm; the image processing system and cross-section analysis system use digital image processing technology. So the whole measuring system is able to detect the roughness and rut depth parameters quickly with high precision, non-damaging and non-contacting.

《微机原理与接口技术》课程是高职高专电气自动化技术专业的核心专业课程,具有理论性强,知识点比较抽象的特点。传统的理论授课加实验的教学方法较难提高学生的实践技能,不符合高职高专应用教学的特点。本文通过一体化的教学设置,采用DVCC8086实验箱,以任务引领教学的模式,使学生在实际的动手过程中,有目的的学习相应的知识点,从而达到增强课程知识点的形象性,使其具体化,学生会更容易学习和理解的目的。

<微机原理与接口技术>课程是一门理论性很强的课程,其知识点比较抽象.本文通过可编程并行接口芯片8255的课程设置来体现如何将Proteus仿真软件结合到课程的教学当中,从而达到增强课程知识点的形象性.使其具体化,学生会更容易学习和理解的目的.

摄像机标定在计算机视觉系统中的作用非常重要,它最终确定系统给出外界三维信息的精确度。改进的非线性最优化摄像机标定方法充分考虑了摄像机的各种畸变,经过多次迭代取得最优解,因其测量精度高,计算速度快而得到广泛的应用。

Optical measurement sensor based on the initiative visual examination technology are widely applied to the non-con-tact examination technology because of it's accurately and rapidly response. Here recommended a kind of optical measurement sensor based on laser trigonometry principle.The sensor is composed by the CCD video camera and laser equipment, it is mainly used in surveying the overall situation of the road surface.The experimental results indicates that this sensor can reach a measurement range of 1100mm in the vertical direction,and 1300mmin horizontal direction.The mean absolute error in horizontal direction is 0.05mm approximately and has a maximum value of 0.09mm approximately.The mean absolute error in vertical direction is 0.08mm approximately and has a maximum value of 0.2mm approximately.

The optical sensors are widely applied to large range distance measurement because of its accurate and rapid response. In this paper, a design of optical sensor based on laser trigonometry principle is discussed. The sensor, composed of CCD video camera and laser equipment, mainly applies in the structure depth measurement of road surface. The original result of the experiment shows that the sensor can reach a measurement range of 80mm in the vertical direction, and 200mm in horizontal direction. The absolute tolerance in vertical direction is approximate to 0.14mm in average; in horizontal approximate to 0.06mm in average. This kind of sensor can be used in rigorous condition and has advantages of larger measurement range, higher precision and lower cost.

In active vision system, the linear illumination and vidicon sampling are widely used in obtaining the 3-D information of the objects surface distance and direction. In order to have the accurate data, we need to calibrate the optics sensor. In this paper, an optimized non-linear method was adopted to calibrate the sensor, and the mathiematics model of the method was very close to the actual performance. The result of the experiment shows us that the precision of the calibration can reach 0.1 mm. So this system is simply and practical, we recommend this system to the actual measurement.