The power of programmability gives industrial automation designers a highly efficient， cost-effective alternative to traditional motor control units （MCUs）。 The parallel-processing power， fast computational speeds， and connectivity versatility of Xilinx® FPGAs can accelerate the implementation of advanced motor control algorithms such as Field Oriented Control （FOC）。 Additionally， Xilinx devices lower costs with greater on-chip integration of system components and shorten latencies with high-performance digital signal processing （DSP） that can tackle compute-intensive functions such as PID Controller， Clark/Park transforms， and Space Vector PWM. The Xilinx Spartan®-6 FPGA Motor Control Development Kit gives designers an ideal starting point for evaluating time-saving， proven， motor-control reference designs. The kit also shortens the process of developing custom control capabilities， with integrated peripheral functions （Ethernet， PowerLink， and PCI® Express）， a motor-control FPGA mezzanine card （FMC） with built-in Texas Instruments motor drivers and high-precision Delta-Sigma modulators， and prototyping Support for evaluating alternative front-end circuitry.
標(biāo)簽： 賽靈思 電機(jī)控制 開發(fā)套件 英文
上傳時(shí)間： 2013-10-28
上傳用戶：wujijunshi
Abstract: As industrial control systems (ICSs) have become increasingly connected and use more off-the-shelfcomponents, new vulnerabilities to cyber attacks have emerged. This tutorial looks at three types of ICSs:programmable logic controllers (PLCs), supervisory control and data acquisition (SCADA) systems, anddistributed control systems (DCSs), and then discusses security issues and remedies. This document alsoexplains the benefits and limitations of two cryptographic solutions (digital signatures and encryption) andelaborates on the reasons for using security ICs in an ICS to Support cryptography.
標(biāo)簽： 工業(yè)系統(tǒng) 安全問題
上傳時(shí)間： 2013-10-09
上傳用戶：woshinimiaoye
Semiconductor memory, card readers, microprocessors,disc drives, piezoelectric devices and digitally based systemsfurnish transient loads that a voltage regulator mustservice. Ideally, regulator output is invariant during a loadtransient. In practice, some variation is encountered andbecomes problematic if allowable operating voltage tolerancesare exceeded. This mandates testing the regulatorand its associated Support components to verify desiredperformance under transient loading conditions. Variousmethods are employable to generate transient loads, allowingobservation of regulator response
標(biāo)簽： 如何測試 穩(wěn)壓器 瞬態(tài)響應(yīng) 負(fù)載
上傳時(shí)間： 2013-11-21
上傳用戶：semi1981
LabVIEW2011已經(jīng)發(fā)布，可以到官網(wǎng)下簡體載中文版的，http://download.ni.com/Support/softlib/，但對于注冊機(jī)來說，許多剛接觸這款注冊機(jī)的朋友并不太會(huì)用，其與以往的LabVIEW注冊機(jī)不太一樣，這款注冊機(jī)要比以往的注冊機(jī)功能上強(qiáng)大許多，如果會(huì)用它可以注冊NI 2011系列所有的軟件LabWindows Measurement-Studio等等，針對網(wǎng)上許多朋友提出不會(huì)使用這種情況，我在這里以破解LabVIEW 2011為例，給大家示范一下，其他軟件也一樣。
標(biāo)簽： Activator License NI 注冊機(jī)
上傳時(shí)間： 2014-01-22
上傳用戶：gdgzhym
SL811開發(fā)資料_包含源程序_電路圖_芯片資料:SL811HS Embedded USB Host/Slave Controller.The SL811HS is an Embedded USB Host/Slave Controller capable of communicate with either full-speed or low-speed USB peripherals. The SL811HS can interface to devices such as microprocessors, microcontrollers, DSPs, or directly to a variety of buses such as ISA, PCMCIA, and others. The SL811HS USB Host Controller conforms to USB Specification 1.1.The SL811HS USB Host/Slave Controller incorporates USB Serial Interface functionality along with internal full-/low-speed transceivers.The SL811HS Supports and operates in USB full-speed mode at 12 Mbps, or at low-speed 1.5-Mbps mode.The SL811HS data port and microprocessor interface provide an 8-bit data path I/O or DMA bidirectional, with interrupt Support to allow easy interface to standard microprocessors or microcontrollers such as Motorola or Intel CPUs and many others. Internally,the SL811HS contains a 256-byte RAM data buffer which is used for control registers and data buffer.The available package types offered are a 28-pin PLCC (SL811HS) and a 48-pin TQFP package (SL811HST-AC). Both packages operate at 3.3 VDC. The I/O interface logic is 5V-tolerant.
上傳時(shí)間： 2013-12-22
上傳用戶：a82531317
Grammatica is a C# and Java parser generator (compiler compiler). It improves upon simlar tools (like yacc and ANTLR) by creating well-commented and readable source code, by having automatic error recovery and detailed error messages, and by Support for testing and debugging grammars without generating source code. It Supports LL(k) grammars with an unlimited number of look-ahead tokens.
標(biāo)簽： compiler Grammatica generator improves
上傳時(shí)間： 2015-01-11
上傳用戶：stella2015
Java/J2EE application framework based on [Expert One-on-One J2EE Design and Development] by Rod Johnson. Includes JavaBeans-based configuration, an AOP framework, declarative transaction management, JDBC and Hibernate Support, and a web MVC framework.
標(biāo)簽： Development application One-on-One framework
上傳時(shí)間： 2014-01-09
上傳用戶：saharawalker
java 開發(fā)的郵件服務(wù)器平臺。支持以下協(xié)議。 協(xié)議可以修改為自己的專門標(biāo)識，這個(gè)版本絕對能用，我自己的郵件服務(wù)器就是使用這個(gè)開源項(xiàng)目，修改后架設(shè)的，據(jù)說21cn也是用這個(gè)引擎開發(fā)的郵件系統(tǒng)。SMTP轉(zhuǎn)發(fā)的時(shí)候需要二次開發(fā)。 Item Status Since First released SMTP server Stable 1.0 0.95 Mailet Engine Stable 1.2 0.95 FileSystem mailboxes/spool Stable 1.2 1.0 RDBMS mailboxes/spool Stable 1.2 1.2 POP3 server Stable 1.1 1.0 RDBMS - Users Stable 1.2.1 1.2.1 LDAP Support - Users Experimental 1.2 1.2 TLS Support - POP3 Experimental 1.2 1.2 Remote Manager Stable 1.0 1.0 TLS Support - Remote Manager Stable 1.2 1.2 NNTP server Experimental 1.2 1.2 FetchPOP Experimental 2.1 2.1
標(biāo)簽： java 協(xié)議 服務(wù)器 修改
上傳時(shí)間： 2014-01-19
上傳用戶：zhouchang199
Antinat is a flexible SOCKS server and client library for writing proxy-based applications. It Supports SOCKS 4, SOCKS 5, authentication, CHAP, XML firewalling, Win32, server chaining, and UDP. It also contains very experimental IPv6 Support
標(biāo)簽： applications proxy-based flexible Antinat
上傳時(shí)間： 2015-02-28
上傳用戶：shawvi
pdnMesh is an automatic mesh generator and solver for Finite Element problems. It will also do post-processing to generate contour plots and Postscript printouts. GUI Support using GTK or MFC (Win32) is available. The problem definition can be done in any form and given to pdnMesh as an input data file. Drawing Exchange Format (DXF) files can be directly imported to pdnmesh. The quality and the coarseness of the mesh can be controlled by giving input parameters.
標(biāo)簽： automatic generator problems pdnMesh
上傳時(shí)間： 2013-12-19
上傳用戶：cuibaigao
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