針對科研實驗中對拉壓千斤頂加載過程控制的需要，采用ATmega128單片機控制步進電機進而實現對執行系統的電動泵站實行自動控制。對力和位移的數據采集與處理及用步進電機控制電動泵站手柄的技術細節作了重點描述。通過單片機的A/D變換器對AMP放大模塊采集的電橋信號作量化處理，千斤頂的操控手柄位置依電動油泵閥門開啟的方向和大小作若干定位，單片機根據力或位移傳感器信號，實時控制步進電機驅動手柄旋轉到相應操控位置。 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.
上傳時間： 2014-01-16
上傳用戶：hasan2015
闡述了軌道交通列車定位技術。介紹了在軌道交通系統中列車定位技術的功能，國內外軌道交通中主要采用的列車定位方法，重點論述了幾種主要定位技術，并從定位精度、閉塞制式、維護投資成本、抗干擾等方面進行分析比較。提出目前軌道交通定位技術應綜合運用，取長補短，多種方法相互融合，才能滿足軌道交通中對安全可靠性的要求。 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.
上傳時間： 2013-11-25
上傳用戶：franktu
用于OMNeT++的模板，可仿真幾種經典的無線傳感網絡節點定位算法，如dv-hop, robust POSITIONING
上傳時間： 2013-11-26
上傳用戶：zhichenglu
GPS軟件接收機設計的經典英文書籍，《Fundamentals of Global POSITIONING System Receivers - A Software Approach》對設計人員極具有參考價值。
上傳時間： 2013-12-16
上傳用戶：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.
標簽： downloading rectangle Project rounded
上傳時間： 2013-12-13
上傳用戶：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.
標簽： Specification Application JavaServer document
上傳時間： 2014-01-03
上傳用戶：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
標簽： incorporating measurements integrated pseudolite
上傳時間： 2013-12-10
上傳用戶：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)
標簽： demonstration diskette contains programs
上傳時間： 2016-10-20
上傳用戶：壞天使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).
標簽： Software-defined complete Global radios
上傳時間： 2017-06-08
上傳用戶：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)
標簽： Software-defined complete Global radios
上傳時間： 2013-12-16
上傳用戶：xauthu
