Antenna servo control system

Hai
Iam trying to design antenna control systems by using pci7342 card. In my control system iam using absolute encoder SICK ARS60 for position feedback and Tacho meter output voltage for rate feedback. In interfacing these things iam facing problems.
1.NI card is not supporting absolute encoder. i planed to use deva SSI card for reading absolute encoder and feed that as position feed back for motion control card. If i did this what sort of problems can i expect.
2. Please tell me the way to feed analog voltage as rate input to motion control card. Can iuse an analog input voltage. As my antenna is Azimuth over elevation system ineed to perform secant correction on one of the two channels. can i do this manipulation in the card.
If anyone is having any experience in these problems please help us by sharing what you know.

gopi,
Have you thought about using softmotion with a Compact RIO (cRIO) system? Using softmotion, cRIO, an analog output module, and an analog input module you will be able to read from your absolute encoder, your Tacho meter, and control your motor.
I think controlling your Antenna is the perfect use for the PCI-7342. Having said that, I would hate for you to have to waste the benefits of the absolute encoder because you can only use an absolute encoder as a quadrature encoder.
If you are dead set on using the PCI-7342, there are a few options...
You can use the absolute encoder as a quadrature encoder as described in the document below...
Using an Absolute Encoder (Binary Encoding) as a Quadrature Encoder with Motion Products
Or, you could use a D/A converter to convert the Absolute encoder to a voltage and use analog feedback as your primary feedback. If your D/A has the same resolution as the A/D on the motion board, this could be extremely effect. The downside is that this requires that you add external circuitry.
You will not be able to use the tachometer with the 7342. The problem is that you want to use the tachometer as secondary feedback to your PCI-7342. The PCI-7342 does support secondary velocity feedback, but the 7342 is expected position feedback that it will take the derivative of to get the velocity feedback it needs. So, if you were to give it direct velocity feedback, the 7342 would find its derivative and end up applying acceleration feedback. Also, only the PCI/PXI-7352 allows Analog Secondary feedback, the 7342 only works with quadrature secondary feedback, which your tachometer doesn't provide.
Like I said at the beginning of this reply, I really think you should look into using NI Softmotion. You can create your own custom Motion controller in a realtime system. This would give you the flexibility you need to use all of your feedback devices.
Below is a link to a great document about Softmotion...
NI SoftMotion: Create Your Custom Motion Controller on Any Platform with LabVIEW
Good Luck,
Lorne Hengst
Applicaiton Engineer
National Instruments

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LabView Control System Engineer Job Opening - Seattle

LabView Control System Engineer Job Opening - Seattle
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used in automotive and aeronautical industries. The duties of the
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Ability to analyze empirical data against theoretical predictions to enhance and improve mathematical model of system.
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John Covey
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Dear Sir / Madam,
I am an experienced engineering professional skilled in Post Silicon Validation by Automating using LabVIEW, Power Measurements, Jitter Measurement & Analysis, Audio Characterizations, Silicon Validation Test Cases, Multi-Channel Data acquisition and Triggering using NI DAQ Cards, Control Systems, Serial Communications using VISA and Serial I/O Interface, Code Native Interfaces, Call Library functions to interface with third party and custom dlls, ATMEL and PIC Micro Controller programming, Temperature Controllers like Honeywell, ESPEC-641, TestEquity 115, Hand held terminal programming to drive servo motors, C/C++/VB Programming for developing embedded applications.
Good experience on Windows API, protocol implementations, ARM11 & ARM7TDMI on-chip programming using Register Map and Pinout Specs using C/C++ Metrowerks Code Warrior and MULTI-ICE for ARM Debugger.
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Thank you for your time and consideration.
Please find an attachment of my resume in MS-Word format.
Sincerely yours,
K.Sowjanya. B.Tech
Message Edited by Support on 04-04-2008 08:39 AM

High-Level LabView Control System Engineer Job Opening - Seattle

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Seattle Safety is looking for a qualified individual to fill an opening for Senior Software Controls Engineer. Seattle Safety designs, manufactures, and installs advanced crash test sled systems that are used in automotive and aeronautical industries. The duties of the Controls Engineer include:
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Dear Sir / Madam,
I am an experienced engineering professional skilled in Post Silicon Validation by Automating using LabVIEW, Power Measurements, Jitter Measurement & Analysis, Audio Characterizations, Silicon Validation Test Cases, Multi-Channel Data acquisition and Triggering using NI DAQ Cards, Control Systems, Serial Communications using VISA and Serial I/O Interface, Code Native Interfaces, Call Library functions to interface with third party and custom dlls, ATMEL and PIC Micro Controller programming, Temperature Controllers like Honeywell, ESPEC-641, TestEquity 115, Hand held terminal programming to drive servo motors, C/C++/VB Programming for developing embedded applications.
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Recent graduated Control-Systems (embedded) enginneer, with experience in France/lebanon/Switzerland Looking for a Job With Labview

I am currently recently graduated from the University of Technology in Belfort-Montbeliard (France).
Master’s grade of “Electrical and control systems engineering”.
I am currently looking for a job in automation, control systems and electronic domain (I prefere LabView Developpement)
Salim DARWICHE
1 rue antonin artaud
31320 castanet tolosan
Tel: 0033.6.85485107
Email : [email protected]
Nationalities :
- French
- Lebanese
Date and place of birth:
April 18, 1986
Toulouse,
France
Education
2009
Master in Electrical and Control Systems Engineering
Option Embedded
systems
University of technology of Belfort-Montbliard france
2006 University
Diploma in Industrial and Maintenance Engineering
DUT Degree Equivalent to 3 years of
technical studies
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Lebanon
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Message Edité par salimo le 11-04-2009 04:35 PM
~~~~~~~~~~~~~~~~~~Looking for a LABVIEW JOB (In EUROPE)>~~~~~~~~~~~~~~~~~~
**The Best Way To Predict**The**Future Is To Invent It**
Attachments:
CV_Salim_Darwiche_S_12_10_09.doc ‏77 KB
CV_SalimDARWICHE_EN_S.doc ‏229 KB

Message Edité par salimo le 11-04-2009 04:36 PM
~~~~~~~~~~~~~~~~~~Looking for a LABVIEW JOB (In EUROPE)>~~~~~~~~~~~~~~~~~~
**The Best Way To Predict**The**Future Is To Invent It**

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http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806f070a.shtml#new5
Rogue Detection under Unified Wireless Networks
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