1 / 18

Team 1-B

Team 1-B In association with National Weather Service: Radar Operations Center Presents WSR-88D Pedestal Simulator Final Demonstration. Team 1-B. Gary Mobley – Configuration Manager. Brian McCall – Correspondence Officer. Usman Chughtai – Financial Officer. Jonathan Moore - Project Manager.

rhona
Download Presentation

Team 1-B

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Team 1-B In association withNational Weather Service: Radar Operations CenterPresentsWSR-88D Pedestal Simulator Final Demonstration

  2. Team 1-B Gary Mobley – Configuration Manager Brian McCall – Correspondence Officer Usman Chughtai – Financial Officer Jonathan Moore - Project Manager

  3. Requirements • Accurate pedestal response • Achieved • Softcopy of firmware • Provided • Documentation • Provided • Demonstration • Provided

  4. Response Requirements • System characteristics for step input: • Slightly underdamped response • Rise time ≤ 1 second • Percent Overshoot ≤ 10% • Settling time (±2%) ≤ 1.5 seconds • Steady state error ≤ 20%

  5. Comm. Requirements • Update position every 45 ms • Must appear transparent to Open Radar Data Acquisition shelter

  6. Product Description • Pedestal Simulator runs on 68HC11 chip • Simulates DCU and Pedestal • Communicates serially with ORDA

  7. Functional Block Diagram Pedestal Simulator Microprocessor CALC SCIR Serial Port MAIN XMIT ORDA

  8. Key Features • Commands • Step Response • Rate limits • Elevation position limits • Models pedestal response with second-order approximation

  9. Difference Equation where x[n-1] is DESIRED POSITION y[n-2] is OLD POSITION y[n-1] is CURRENT POSITION y[n] is NEW POSITION y[n] = y[n-1] + 0.7634 (y[n-1] – y[n-2]) + 0.037 (x[n-1] – y[n-1]) • Multiplication subroutine built to handle both unsigned and signed multiplication.

  10. Performance Highlights Overshoot 6.58% SSE 0.2% Ts 1.31s Tr 0.45s

  11. Performance Highlights SSE 0.2% Overshoot 6.66% Ts 1.31s Tr 0.45s

  12. Parts Cost

  13. Labor Cost

  14. The Schedule

  15. Recommendations • Custom PC Board • Diagnostics • LCD Display • Status • Error Codes

  16. Test Environment Software Hardware

  17. Tests • Azimuth • Small/Large Step • +/- Rate • Max/Min Rate • Wrap Around • Elevation • Small/Large Step • +/- Rate • Max/Min Rate • Max/Min Position

  18. Demonstration

More Related