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.
上传时间： 2013-10-28
上传用户：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.
上传时间： 2013-10-09
上传用户：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
上传时间： 2013-11-21
上传用户：semi1981
LabVIEW2011已经发布，可以到官网下简体载中文版的，http://download.ni.com/supPort/softlib/，但对于注册机来说，许多刚接触这款注册机的朋友并不太会用，其与以往的LabVIEW注册机不太一样，这款注册机要比以往的注册机功能上强大许多，如果会用它可以注册NI 2011系列所有的软件LabWindows Measurement-Studio等等，针对网上许多朋友提出不会使用这种情况，我在这里以破解LabVIEW 2011为例，给大家示范一下，其他软件也一样。
上传时间： 2014-01-22
上传用户：gdgzhym
SL811开发资料_包含源程序_电路图_芯片资料: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.
上传时间： 2013-12-22
上传用户：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.
标签： compiler Grammatica generator improves
上传时间： 2015-01-11
上传用户：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.
标签： Development application One-on-One framework
上传时间： 2014-01-09
上传用户：saharawalker
java 开发的邮件服务器平台。支持以下协议。 协议可以修改为自己的专门标识，这个版本绝对能用，我自己的邮件服务器就是使用这个开源项目，修改后架设的，据说21cn也是用这个引擎开发的邮件系统。SMTP转发的时候需要二次开发。 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
上传时间： 2014-01-19
上传用户：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
标签： applications proxy-based flexible Antinat
上传时间： 2015-02-28
上传用户：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.
标签： automatic generator problems pdnMesh
上传时间： 2013-12-19
上传用户：cuibaigao
