National Instruments India Webcast

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National Instruments 'Webcast Wednesday' presented by :
Bandan Jot SIngh , Applications Engineer , National Instruments India

For more information on Webcast Wednesday's:

http://digital.ni.com/worldwide/india.nsf/web/all/8A6F4A7271EAC4AF86257661006318F9?OpenDocument&node=163960_us

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National Instruments India Webcast

  1. 1.
  2. 2.
  3. 3. Meet your Presenter<br />Bandan Jot Singh<br />Applications Engineer, NI India<br />
  4. 4. Case Study<br />Using NI-LabVIEW Real-time and PXI Technology To Automate Gauge-Control In Cold Rolling Mills<br />
  5. 5. Agenda<br /><ul><li> Alternate Control System Platforms
  6. 6. Problem Statement
  7. 7. Formulation of Closed-Loop Control System
  8. 8. Implementation Using LabVIEWRealTime and NI Hardware
  9. 9. Leverage Achieved Using NI Equipments</li></ul>5<br />
  10. 10. Control System Platforms<br /><ul><li>Various Control System Platforms Available
  11. 11. PLC: Programmed in Ladder Logic (Operation Specific)
  12. 12. DCS: Collection of various PLC’s and RTU’s (Dedicated Systems)
  13. 13. Applications using frequently changing control logic may not be efficient onsuch platforms because development time is more.
  14. 14. Multiple hardware synchronization not supported</li></li></ul><li>To develop a PXI based Gauge monitoring and control system using LabVIEW RT and National Instruments Data-Acquisition Systems<br /><ul><li> Useful for ferrous and non-ferrous metal industries
  15. 15. Applications that require Real-Time Monitoring
  16. 16. Control Systems that require high-precision monitoring and a short response time</li></ul>7<br />
  17. 17. Inputs<br />Gauge-Control In Cold Rolling Mills<br /><ul><li>Position
  18. 18. Initial Thickness
  19. 19. Rotating Speed
  20. 20. Pressure Applied</li></li></ul><li>Sensors Used<br />
  21. 21. Closed Loop Control System<br /><ul><li> Process: Hydraulic Pump (to control position)</li></li></ul><li>Implementation through NI Controller running LabVIEW RealTime <br />
  22. 22. Choosing the Right Modules for the PXI System<br /><ul><li>NI PXI – 6040E
  23. 23. 500 kS/s (1-Channel), 250 kS/s (Multichannel), 12-Bit, 16-Analog-Input Multifunction DAQ
  24. 24. Assimilation of Thickness and Pressure Data</li></li></ul><li>Module for Measuring Speed of the Metal Strip<br /><ul><li> NI PXI – 6602 Counter card
  25. 25. 8-channel, 32-bit up/down counter/timer module
  26. 26. 80 MHz maximum source frequency
  27. 27. 3 simultaneous high-speed DMA Transfer Capability</li></li></ul><li>Module to Control Servo Valves<br /><ul><li>NI PXI – 6711
  28. 28. High-Speed Analog Output -- 12-Bit, 1 MS/s per Channel
  29. 29. Digital triggering and external clocking
  30. 30. 2 up/down counter/timers, 24-bit resolution</li></li></ul><li>Final System Setup<br />
  31. 31. Implementation of Control System Using LabVIEW Real-Time Development Environment<br /><ul><li>The virtual instrument can be developed using PID Control Toolkit and then targeted to the PXI controller running on LabVIEW Real time.
  32. 32. Specialized for Time-critical data acquisition and control applications
  33. 33. Download to a dedicated target for increased reliability.</li></li></ul><li>Benefits of Using LabVIEW RT and NI DAQ Equipments<br /><ul><li>The benefits of using LabVIEW and NI DAQ equipments compared to the traditional instruments and PLC :
  34. 34. The development time for putting the whole system came down by a factor of 1/6.
  35. 35. Increased flexibility in redesigning the control mechanism as per the requirements of different materials fed to the system.
  36. 36. Enhanced quality in output because of reduction in response times. In a typical PLC based system the control loop rate is 100 to 500 milliseconds but in NI PXI based system, this is reduced to 10 ms.
  37. 37. The capability of all the hardware to synchronize on the PXI RTSI bus is an added advantage.</li></li></ul><li>Questions?<br />18<br />
  38. 38. Thank youFor more information, please visit ni.comor contact us at080-41190000ni.india@ni.com<br />19<br />

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