free software for machine design
Báo cáo khoa học: "Pattern-Based Context-Free Grammars for Machine Translation" pot
... of the World-Wide Web (WWW) as information source, it has become rou- tine for Internet users to access textual data written in foreign languages. In Japan, for example, a dozen or so inexpensive ... systems based on these formalisms, on the other hand, would not be possible without much more efficient parsing and disambiguation algorithms for these formalisms and a method for building a lexicon ... of head constraints holds throughout the parsing process. 145 Pattern-Based Context -Free Grammars for Machine Translation Koichi Takeda Tokyo Research Laboratory, IBM Research 1623-14 Shimotsuruma,...
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Calculations for machine design ~ team tolly
... Calculations for Machine Design was writtento be a companion to Marks’ Standard Handbook for Mechanical Engineers, providingdetailed calculations to the important problems in machine design. For each ... columns, the secantformula for eccentric loading, as well as a discussion on how to deal with short columns.Chapter 7, Fatigue and Dynamic Design, contains information on how to design for dynamic ... four rivets that must carrythe force (P), the shear force (V ) for each rivetisStep 2. As there are four rivets that must carrythe force (P), the shear force (V ) for each rivetis4V = P → V...
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Free Software tools for embedded systems
... ) and can boot several operating systems (Linux, uClinux, and others)Softgun: http://softgun.sourceforge.netVirtual ARM system with many virtual onboard peripherals. Boots Linux.SWARM Software ARM arm7 emulatorhttp://www.cl.cam.ac.uk/~mwd24/phd/swarm.htmlCan run uClinux13 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008klibchttp://www.kernel.org/pub/linux/libs/klibc/“Kernel C library”Tiny and minimalistic C library designed for use in an initramfs at boot time (alternative to initrds).Fine for the creation of simple shell scripts.Ships with small executables for use in shells, built with klibc,and a klcc compiler to compile your own applications.Not elaborate enough to support BusyBox applications.Useful details in http://en.wikipedia.org/wiki/Klibc19 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Platform specific toolchains (1)ARMCode Sourcery (supports GNU/Linux, EABI and uClinux):http://www.codesourcery.com/gnu_toolchains/arm/Also available for Windows workstations.MIPShttp://www.linuxmips.org/wiki/Toolchains (useful links)6 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Training contents (3)AnnexesAutomatic system generation with BitBake / OpenEmbedded33 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Other emulatorsColdFire emulatorhttp://www.slicer.ca/coldfire/Can boot uClinux37 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Minicom (1)Definition: serial communication programAvailable in all GNU / Linux distributionsCapabilities (all through a serial link):Serial console to a remote Unix systemFile transferModem control and dialupSerial port configuration50 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Denx Software Engineeringhttp://denx.deCreated by Wolfgang Denk,the author of the UBoot bootloader.Create and support the Embedded Linux Development Kit (ELDK),a complete and well documented development environment.This kit is not only Free Software, it can be downloaded freely by anyone.A great community member and contributor!15 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008 Free Software tools for embedded systemsGNU / Linux workstationCrosscompiling toolchains9 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008uClibchttp://www.uclibc.org/ from CodePoet ConsultingLicense: LGPLLightweight C library for small embedded systems, with most features though.The whole Debian Woody was ported to it ... Support servicesUseful if you don't have your own support resourcesLong term support commitment, even for versions considered as obsolete by the community, but not by your users!44 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Commercial toolsetsCaution: commercial doesn't mean proprietary!Vendors play fair with the GPL and do make their source code available to their users, and most of the time, to the community.As long as they distribute the sources to their users, the GPL doesn't require vendors to share their sources with any third party.No issue with all the GPL sources developed by or with the community.Graphical toolkits developed by the vendors look proprietary. Their licenses are not advertised on their websites! You have to be a customer to know or get a free preview kit to know.35 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008 Free Software tools for embedded systemsGNU / Linux workstationVarious tools34 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Emulators SummarySystem emulatorsUseful to experiment with a full system, including the kernelqemu: x86, x86_64, arm, sparc, ppc, mipsSkyEye: several arm architecturesUser emulatorsUseful to run or debug user space binaries for other CPUsqemu: x86, arm, sparc, ppc, mips20 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Platform specific toolchains (2)ColdfireCode Sourcery (supports ELF, GNU/Linux and uClinux):http://www.codesourcery.com/gnu_toolchains/coldfirePowerPCCode Sourcery (supports GNU/Linux and EABI)http://www.codesourcery.com/gnu_toolchains/power.html49 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Sysgo Koan Software http://sysgo.comELinOS development toolset,in particular based on Eclipseand the Linux Trace Toolkit.Includes FreeToolBox, a freely downloadable compiling and rootfs creating toolchain.Supports i386, arm and ppc.Hard realtime support with their own microkernel (PikeOS),an approach similar to RTAI.http://koansoftware.comMakers of KaeilOS(http://koansoftware.com/kaeilos/), a GPL embedded Linux distribution for industrial applications.KaeilOS supports i386 and popular arm platforms. Other platforms supported upon request.Includes several graphical toolkits and supports hard realtime (RTAI, Xenomai, preemption patches).Unfortunately, KaeilOS is GPL but not available for public download.16 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Standalone toolchain buildBuilding a crosscompiling toolchain by yourself is a difficult and painful task! Can take days or weeks!Lots of details to learn. Several components to build(building gcc twice: once for gcc + once for compilers that need the C library).Lots of decisions to make(such as C library version and configuration for your platform)Need kernel headers and C library sourcesNeed to be familiar with current gcc issues and patches on your platformUseful to be familiar with building and configuring toolshttp://www.aleph1.co.uk/armlinux/docs/toolchain/toolchHOWTO.pdfcan show you how fun it can be!21 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Toolchain building utilitiesBuildroot: http://buildroot.uclibc.org/Dedicated Makefile to build uClibc based toolchainsand even entire root filesystems.Downloads sources and applies patches.Crosstool: http://www.kegel.com/crosstool/Dedicated script to build glibc based toolchainsDoesn’t support uClibc yet.Downloads sources and applies patches.26 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Toolchains useful resourceseLinux.org toolchain page:http://elinux.org/Tool_Chains29 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008 Free Software tools for embedded systemsGNU / Linux workstationEmulators8 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008glibchttp://www.gnu.org /software/ libc/License: LGPLC library from the GNU projectDesigned for performance, standards compliance and portabilityFound on all GNU / Linux host systemsQuite big for small embedded systems: about 1.7 MB on Familiar Linux iPAQs (libc: 1.2 MB, libm: 500 KB)36 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008chrootAvailable in all GNU/Linux distributionsUsage:chroot <dir> [command]Runs a command or an interactive shellwith a special root directory.Standard usage: Internet serversServices executed in chroot jails: even when compromised,the service cannot gain access to the rest of the system.Usage for embedded system development:Develop and test a new root filesystem on the development host.Very easy to use when the host and target have the same CPU instruction set.Used by LFS (Linux From Scratch).Also used by Scratchbox: Qemu makes the usage of target binaries transparent./binlibetchttp/libetcbinchrootjail ... Support servicesUseful if you don't have your own support resourcesLong term support commitment, even for versions considered as obsolete by the community, but not by your users!44 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Commercial toolsetsCaution: commercial doesn't mean proprietary!Vendors play fair with the GPL and do make their source code available to their users, and most of the time, to the community.As long as they distribute the sources to their users, the GPL doesn't require vendors to share their sources with any third party.No issue with all the GPL sources developed by or with the community.Graphical toolkits developed by the vendors look proprietary. Their licenses are not advertised on their websites! You have to be a customer to know or get a free preview kit to know.35 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008 Free Software tools for embedded systemsGNU / Linux workstationVarious tools34 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Emulators SummarySystem emulatorsUseful to experiment with a full system, including the kernelqemu: x86, x86_64, arm, sparc, ppc, mipsSkyEye: several arm architecturesUser emulatorsUseful to run or debug user space binaries for other CPUsqemu: x86, arm, sparc, ppc, mips20 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Platform specific toolchains (2)ColdfireCode Sourcery (supports ELF, GNU/Linux and uClinux):http://www.codesourcery.com/gnu_toolchains/coldfirePowerPCCode Sourcery (supports GNU/Linux and EABI)http://www.codesourcery.com/gnu_toolchains/power.html49 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Sysgo Koan Software http://sysgo.comELinOS development toolset,in particular based on Eclipseand the Linux Trace Toolkit.Includes FreeToolBox, a freely downloadable compiling and rootfs creating toolchain.Supports i386, arm and ppc.Hard realtime support with their own microkernel (PikeOS),an approach similar to RTAI.http://koansoftware.comMakers of KaeilOS(http://koansoftware.com/kaeilos/), a GPL embedded Linux distribution for industrial applications.KaeilOS supports i386 and popular arm platforms. Other platforms supported upon request.Includes several graphical toolkits and supports hard realtime (RTAI, Xenomai, preemption patches).Unfortunately, KaeilOS is GPL but not available for public download.16 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Standalone toolchain buildBuilding a crosscompiling toolchain by yourself is a difficult and painful task! Can take days or weeks!Lots of details to learn. Several components to build(building gcc twice: once for gcc + once for compilers that need the C library).Lots of decisions to make(such as C library version and configuration for your platform)Need kernel headers and C library sourcesNeed to be familiar with current gcc issues and patches on your platformUseful to be familiar with building and configuring toolshttp://www.aleph1.co.uk/armlinux/docs/toolchain/toolchHOWTO.pdfcan show you how fun it can be!21 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Toolchain building utilitiesBuildroot: http://buildroot.uclibc.org/Dedicated Makefile to build uClibc based toolchainsand even entire root filesystems.Downloads sources and applies patches.Crosstool: http://www.kegel.com/crosstool/Dedicated script to build glibc based toolchainsDoesn’t support uClibc yet.Downloads sources and applies patches.26 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008Toolchains useful resourceseLinux.org toolchain page:http://elinux.org/Tool_Chains29 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008 Free Software tools for embedded systemsGNU / Linux workstationEmulators8 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008glibchttp://www.gnu.org /software/ libc/License: LGPLC library from the GNU projectDesigned for performance, standards compliance and portabilityFound on all GNU / Linux host systemsQuite big for small embedded systems: about 1.7 MB on Familiar Linux iPAQs (libc: 1.2 MB, libm: 500 KB)36 Free Software tools for embedded systems© Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp:/ /free electrons.comJan 24, 2008chrootAvailable in all GNU/Linux distributionsUsage:chroot <dir> [command]Runs a command or an interactive shellwith a special root directory.Standard usage: Internet serversServices executed in chroot jails: even when compromised,the service cannot gain access to the rest of the system.Usage for embedded system development:Develop and test a new root filesystem on the development host.Very easy to use when the host and target have the same CPU instruction set.Used by LFS (Linux From Scratch).Also used by Scratchbox: Qemu makes the usage of target binaries transparent./binlibetchttp/libetcbinchrootjail...
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Tài liệu Free As in Freedom: Richard Stallman''''s Crusade for Free Software pdf
... other free programs whose distribution conditions are different, write to the author to ask for permission. For software that is copyrighted by the Free Software Foundation, write to the Free Software ... exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. ... documented the individual software commands that told a machine what to do. Xerox, in this instance, had provided software files in precompiled, or binary, form. Programmers were free to open the files...
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Free for All How Linux and the Free Software Movement Undercut the High-Tech Titans pot
... as an absentminded profes-12 … FREE FOR ALLFreeForAll/1-138/repro 4/21/00 11:44 AM Page 12stop people from working on free software if they wanted to hack. Thefreedom to create was more powerful ... the22 … FREE FOR ALLFreeForAll/1-138/repro 4/21/00 11:44 AM Page 22what they want. There is no need for the FreeBSD management tomeet and decide “Multimedia is good.” There is no need for a ... four main principles:The freedom to run the program, for any purpose (freedom 0).1The freedom to study how the program works, and adapt it to your needs(freedom 1).The freedom to redistribute...
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Six Sigma for Electronics Design and Manufacturing
... could substitute for QFD.1.9 Design for Manufacture (DFM)The principles of design for manufacture and design for electronic as-sembly have been widely been used in industry through design guide-lines ... process10.2 Technical Design Information Flow and Six Sigma 327System Design 10.2.1 Opportunities in six sigma for system or 328product design improvements10.2.2 The system design process 32910.2.3 ... Click Here for Terms of Use.Six Sigma for Electronics Design and Manufacturing For a company aiming to design products with the lowest possible num-ber of defects, traditional three-sigma designs...
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Machine Design 7 March 2013
... 201 3MACHINE DESIGN. com20designs, they could be custom shaped to make better use of the available space. As the design stands now, we have al-most the entire forearm empty and available for ... electronics. Learn more and register at http://machinedesign.com/training.Formula Hybrid racerThe Formula Hybrid design competition has students building high-performance race cars that are also efficient ... www.jhuapl.edu/prosthetics For another feature on prosthetic hands, scan this code or go to http://machinedesign.com/article/giving-artificial-hands-a-sense-of-touch-0909MARCH 7, 2013 MACHINE DESIGN. com...
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Best free software-Phần Mềm
... Các phần mềm miễn phí hay:nBINDER 3.0 Nén, bảo vệ và đóng gói dữ liệu (free) nBinder là chương trình miễn phí cho phép nén các tập tin thi hành mà không làm thay đổi ... trình có dung lượng 157 kb, tải tại www.nemokprod.go.ro hay www.echip.com.vnAccess Manager 2.0 ( free) Chương trình quản lý mật khẫu miễn phí đơn giản và dễ sử dụng. Người sử dụng dùng 1 mật ... password). Chương trình nặng 1,63MB, tải tại www.access-manager.co.uk hay www.echip.com.vnROTATE 1.02 (free) xoay màn hình theo ý muốnIRotate là chương trình cho phép bạn xoay chuyển màn hình theo các...
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Fundamentals of Machine Design P34
... from outside, for example, in punching press forces of very large magnitude is applied for a short while (impulsive force), in crank shafts variable loads act due to nature of force arising ... cylinders. Often dynamic forces appear in the moving parts, e.g., inertia forces in machines and mechanisms, forces due to unbalance of the rotating components etc. Since these forces are to be withstood ... value. For a complete reversal of stress the value of K = -1. The design stress for completely reversing load is calculated using the formula 1,1,1adkσσ−−−= where 1,dσ−= design...
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Fundamentals of Machine Design P37
... tensions • Some commonly used design parameters 13.1.1 Flexible Machine Elements Belt drives are called flexible machine elements. Flexible machine elements are used for a large number of industrial ... 4. Khurmi, R.S. and Gupta J.K., Text book on Machine Design, Eurasia Publishing House, New Delhi. 5. Sharma, C.S. and Purohit Kamalesh, Design of Machine Elements, Prentice Hall of India, New ... driver, for which the product, μα of equation for belt tension is the least, should be considered to determine the tension ratio. References 1. V.Maleev and James B. Hartman , Machine Design, ...
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