针对科研实验中对拉压千斤顶加载过程控制的需要，采用ATmega128单片机控制步进电机进而实现对执行系统的电动泵站实行自动控制。对力和位移的数据采集与处理及用步进电机控制电动泵站手柄的技术细节作了重点描述。通过单片机的A/D变换器对AMP放大模块采集的电桥信号作量化处理，千斤顶的操控手柄位置依电动油泵阀门开启的方向和大小作若干定位，单片机根据力或位移传感器信号，实时控制步进电机驱动手柄旋转到相应操控位置。 Abstract: This article describes the use of ATmega128 AVR microcontroller series of DBS electric pumping stations and QF100/200 separate twoway hydraulic jack to automate the process of manipulating the work of the technical content. Articles on force and displacement data acquisition and processing， and stepper motor control electric pump with the handle of the key technical details were described. Through the MCU’s A / D converter module is collected on the AMP amplification quantify the signal bridge， jack handle position control valve opening according to the direction of electric pumps for a number of POSITIONING and size of the microcontroller based on force or displacement sensor signals， real-time control stepper motor drive control handle rotate to the appropriate location.
上传时间： 2014-01-16
上传用户：hasan2015
阐述了轨道交通列车定位技术。介绍了在轨道交通系统中列车定位技术的功能，国内外轨道交通中主要采用的列车定位方法，重点论述了几种主要定位技术，并从定位精度、闭塞制式、维护投资成本、抗干扰等方面进行分析比较。提出目前轨道交通定位技术应综合运用，取长补短，多种方法相互融合，才能满足轨道交通中对安全可靠性的要求。 Abstract: Rail train POSITIONING technology is described. The paper introduces the funetions of the train POSITIONING technology in the rail transit system， the main methods of train POSITIONING do mestic and international rail， and focuses on several key methods， analyzes and compares from the POSITIONING accuracy， block system, maintenance and investment cost， interference and so on， suggested that the current rail POSITIONING technology should be integrated use of POSITIONING method of meriging， learn from each other， to meet the reliability requirements of rail safety.
上传时间： 2013-11-25
上传用户：franktu
用于OMNeT++的模板，可仿真几种经典的无线传感网络节点定位算法，如dv-hop, robust POSITIONING
上传时间： 2013-11-26
上传用户：zhichenglu
GPS软件接收机设计的经典英文书籍，《Fundamentals of Global POSITIONING System Receivers - A Software Approach》对设计人员极具有参考价值。
上传时间： 2013-12-16
上传用户：l254587896
hanks for downloading this code. This VB Project shows you how to make forms with "rounded rectangle" shape. It also shows you how you can reduce the size of your programs with a GUI by using blocks of images and absolutely POSITIONING and stretching them to create a dialog box, rather than making the whole dialog box in a graphics program and setting it as the Picture property of the Form. Another advantage of using image blocks is that you can resize this form to virtually any size and the effect will still be the same.
标签： downloading rectangle Project rounded
上传时间： 2013-12-13
上传用户：zhangliming420
JavaServer Pages™ Specification This document is intended for: · Web Server and Application Server vendors that want to provide JSP containers that conform to the Tag Extensions specification. · Web Authoring Tool vendors that want to generate JSP pages that conform to the Tag Extensions specification. · Service providers that want to deliver functionality as tag libraries. · Sophisticated JSP page authors that want to define new tag libraries for their use, or who are responsible for creating tag libraries for the use of a group. · Eager JSP page authors who do not want to or cannot wait for Web Authoring Tools, or even a User’s Guide. This document is not a User’s Guide, but it contains some POSITIONING and explanatory material.
标签： Specification Application JavaServer document
上传时间： 2014-01-03
上传用户：qilin
This paper deals with the issue of incorporating pseudolite measurements into an integrated Global POSITIONING System/ Inertial Navigation System ~GPS/INS! POSITIONING and attitude system with a view to improving signal availability, solution reliability, and accuracy in a localized area
标签： incorporating measurements integrated pseudolite
上传时间： 2013-12-10
上传用户：wmwai1314
This diskette (version 1.0) contains demonstration programs and source codes in MATLAB (v.5.2) for algorithms listed in the textbook Global POSITIONING Systems, Inertial Navigation, and Integration, by M. S. Grewal, Lawrence Weill, and A. P. Andrews, published by John Wiley and Sons, 2000. Contents: MATLAB (Version 5.2) Demonstrations & Scripts Chapter4 ephemeris.m calculates the GPS satellite position in ECEF coordinates from its ephemeris parameters. Chapter5 Klobuchar_fix.m calculates the ionospheric delay. Chapter6 (shows the quaternion utilities)
标签： demonstration diskette contains programs
上传时间： 2016-10-20
上传用户：坏天使kk
Software-defined radios (SDRs) have been around for more than a decade. The first complete Global POSITIONING System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions.We therefore find it timely to publish an up-to-date text on the subject and at the same time include Galileo, the forthcoming European satellitebased navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS).
标签： Software-defined complete Global radios
上传时间： 2017-06-08
上传用户：wkchong
Software-defined radios (SDRs) have been around for more than a decade. The first complete Global POSITIONING System (GPS) implementation was described by Dennis Akos in 1997. Since then several research groups have presented their contributions.We therefore find it timely to publish an up-to-date text on the subject and at the same time include Galileo, the forthcoming European satellitebased navigation system. Both GPS and Galileo belong to the category of Global Navigation Satellite Systems (GNSS)
标签： Software-defined complete Global radios
上传时间： 2013-12-16
上传用户：xauthu
