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P14372 Actively Stabilized Hand-Held Laser Pointer

P14372 Actively Stabilized Hand-Held Laser Pointer. Kaitlin Peranski : IE, project manager Jeremy berke : ee , scribe/lead software Chris caporale : Ee , lead hardware Spencer Wasilewski : ME, modeling/machinist Kyle Jensen: ME, NST Module Expert Kyle lasher: ME, test bench designer.

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P14372 Actively Stabilized Hand-Held Laser Pointer

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  1. P14372Actively Stabilized Hand-Held Laser Pointer Kaitlin Peranski: IE, project manager Jeremy berke: ee, scribe/lead software Chris caporale: Ee, lead hardware Spencer Wasilewski: ME, modeling/machinist Kyle Jensen: ME, NST Module Expert Kyle lasher: ME, test bench designer

  2. Agenda Background System Analysis Concept Development Detailed Risk Assessment Project Schedule Test Plan Challenges Action Items

  3. Background Problem statement stakeholders Customer needs Engineering requirements House of quality Benchmarking results Current Project schedule

  4. Problem Statement • Current State: • Module from NST that can steer a laser beam • Lacks the ability to detect and reduce unwanted vibrations • Future State: • System to sense and interpret vibrations • Output to NST Module for corrective action • Goals: • Handheld, self-contained and safe design • Constraints: • Operating temperature, package size

  5. Stakeholders • New Scale Technologies, Victor, NY • Dave Henderson, Owner • Daniele Piazza, R&D • RIT & MSD • MSD Group

  6. Customer Needs Engineering Requirements Needs and Requirements

  7. House of Quality Top Concerns: Amp Reduction Response Time NST Laser Steering

  8. Benchmarking Results • Comparison of Gyroscopes and Accelerometers • Gyroscope: output given in rad/sec; measures roll, yaw and pitch; possible vendor- InvenSense IDG- 1000 • Accelerometer: cannot sense yaw directly; requires more computation • Target Frequency Range: 1-20 Hz • Round 1 testing confirmed range

  9. Frequency Range Testing

  10. Frequency Range Testing

  11. Frequency Range Testing Arm Extended, Unfiltered Arm Extended, Filtered

  12. Test Bench Ideas • Requirements: • Frequency: 1-20 Hz • Amplitude: +/- 2 degrees

  13. Patent Results • US 7553048 B2 • Uses a gimbal (13) and magnet (80)

  14. Patent Results • US 7380722 B2 • Uses 2 accelerometers and a mirror

  15. Patent Results • US 8436908 B2 • Uses a stabilizer and actuators

  16. Patent Results • US 20130077945 A1 • Uses 3 actuators and a gyroscope

  17. Current Project Schedule

  18. System Analysis Functional decomposition System architecture

  19. Functional Decomposition

  20. System Architecture

  21. Concept Development Morphological analysis Concept alternatives Pugh matrix Concept selection System architecture

  22. Morphological Analysis

  23. Morphological Analysis The driving decision currently is digital versus analog.

  24. Concept Alternatives Concept 1 Concept 2 Battery Gyroscope Analog LPF Hardware Integrator Hardware Servo Mode NST Module Battery Gyroscope Analog LPF Hardware Integrator Software Digital USB NST Module

  25. Concept Alternatives Concept 3 Concept 4 Battery Gyroscope Digital LPF Software Integrator Software Digital USB NST Module Battery Accelerometer Digital LPF Software Integrator Software Digital USB NST Module

  26. Concept Selection: Pugh Matrix1st Iteration

  27. Concept Selection: Pugh Matrix2nd Iteration

  28. System Architecture Battery Servo/USB (I2C) Gyroscope Scaled Inversion Low Pass Filter Integrator

  29. Detailed Risk Assessment Top Concerns: Battery failure Poor sensor accuracy Poor data processing Send wrong control signal to NST module

  30. Project Schedule: Next 3 Weeks

  31. Test Plan • Gyroscope • Accuracy, output scaling • Filter Design • Transfer function • Integrator Design • Accuracy, response time, noise • Test bench • Functionality, calibrate frequency • Algorithm • Vibration reduction capacity

  32. Challenges • Control system design • Response time, accuracy • Reached out to NST for input on analog versus digital • Still waiting for a response

  33. Action Items • Update NST on progress • Refine test bench design • 1 versus 2 axis • Future Benchmarking • Feedback system/loop: analog circuit in some binocular systems • Components: gyroscope, battery, processor

  34. Any Questions? Thank You.

  35. References • Benchmarking Articles: • Measurement Method for Image Stabilizing Systems by Golik and Wueller • Image Stabilization Technology Overviewby Sachs, Nasiri and Goehl

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