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Recent content by shangwa

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    What exactly is a servo motor ?

    Re: Servo motor question? Hi mImoto, Servo is original from latin language of slave which any device could follow your order to do something you want to do is called a servo device. Servo motor??? A motor that you can command it's postion,speed even torque could called a servo motor. How to...
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    What exactly is WinAPI and how to use it?

    WinAPI newbie questions Hi, There are 3 important kernel module on win os. kernel32.dll user32.dll gdi32.dll Wanna use functions provided by these dll??? If yes! Use Win32 API to access. How to use those API functions? 1.Charles Petzold,Programming Windows 5e 2.Jeffrey Ritcher,Programming...
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    Computer interface modules for process control

    Hi 001, You mean you are trying to development HMI for process control using desktop pc.since HMI is a part of SCADA you can find a lot of commericial products like iconics,intellution or wonderware...etc. But if develope by yourself ,first figure what device your process monitoring for example...
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    how to choose incremental encoder?

    Hi, Why don't you use a tachmeter for speed feedback instead of encoder for poistion feedback??? Regards,
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    What do you think about Linux CNC ?

    linux cnc Hi, LinuxCNC is a good project and lot of infomations for someone wanna develope soft-cnc by himself. To my point of view,you can refer to it but never start from it.If you care about a real-cnc performance,cpp code will lead to to fail for machine control especially in machine tool...
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    The Fourier series representation of an aperiodic signal

    Fourier series Hi, 4 combinations of signals Continuous+Aperiodic-Fourier Transform Continuous+Periodic-Fourier Series Discrete+Aperiodic-Discrete Time Fourier Transform Discrete+Period-Discrete Fourier Transform from Steven's DSP book
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    what is Electronic Gearing?

    hi ash, I think you might asking electric geraing for servo motor especially on this board.Since servo driver can accept various command input like position command(pulse),velocity cmd(voltage),torque cmd(voltage) with a specific cmd like 10000pulse/rev and various motor encoder feedback can be...
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    Windows Embedded: XP or CE?

    Yes!you can write a driver for real-time application.But how real-time it is? If deterministic real-time app is consider like motion control,a hard real-time system should be implemented. Unfortunately,XPE is not a deterministic real-time os if no real-time extionsion had installed to modify...
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    interprocess communication

    Share Memory would be a good idea if sync. is not an important issue.If sync. has to be consider i would prefer 2-way share memory access. If there are a lot of client accessing for competition i would suggest share memory with critical session or mutex or signal. Regards
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    Windows Embedded: XP or CE?

    1.XPE is not a real-time os but CE 3.0+ is a real-time os. 2.any program executed on win2k/xp could be run on xpe without recompile but CE can only accepted embedded visualC++/visual basic app if not using dotNet tech. Regards
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    How to minimize the interrupt latency of an operating system

    Interrupt Latency Hi, I think there is no way to reduce ISR Latency unless you do something on OS's scheduling module. That's why you need a real-time os or install some real-time extension on your os. ISR Latency happens when you set interrupt vector of a interrupt number to a specific...
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    question about motion control in cnc.

    question of motion in hindi 1.CNC offen us AC servo motor in milling& turning but stepper would be fine if accurancy is not important. To control servo motor the best way is to use servo driver accomplished with servo motor or you have to design PWM control circuit and position loop. 2.it...
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    C++ Algorithms for Digital Signal Processing

    You can find his first version C Algorithms for Real-Time DSP at here with : Good Luck
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    looking for some source code on wavelet application

    Check this site for info. https://www.amara.com/current/wavesoft.html There are a lot of wavelet code Good luck
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    Website for DSP Introduction and Tutorial

    Check NI Web Site https://zone.ni.com/devzone/devzone.nsf/webcategories/4E7A0ED81CB0C45C862567AF00754F6A There are a lot of tech. note and toturial Good Luck

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