1 / 21

Prepared by: Spencer Jackson Dept. of Electrical and Computer Engineering Utah State University

ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Biowire actuator. Prepared by: Spencer Jackson Dept. of Electrical and Computer Engineering Utah State University E: ssjacskon71@gmail.com; T: ( 435)797-2757; F: (435)797-3054 (ECE Dept.). 3/11/2010.

jaafar
Download Presentation

Prepared by: Spencer Jackson Dept. of Electrical and Computer Engineering Utah State University

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. ECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Topic: Biowire actuator Prepared by: Spencer Jackson Dept. of Electrical and Computer Engineering Utah State University E: ssjacskon71@gmail.com; T: (435)797-2757; F: (435)797-3054 (ECE Dept.) 3/11/2010

  2. Outline • Reference list • To probe further • BioMetal Wire vs. BioMetal Helix • Major applications • Basic working principle illustrated • A typical sample configuration in application (application notes) • Soft Robot • BioWire Micro Servo • Major specifications • Limitations • Availability ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  3. Reference list • Toki Corporation • http://www2.toki.co.jp/biometal/english/contents.php • Crawling and Jumping Soft Robots • http://www.ritsumei.ac.jp/se/~hirai/research/softrobot-e.html#notes • Servo Data Base • http://www.servodatabase.com/servo/toki/biowire • Images Scientific instruments • http://www.imagesco.com/nitinol/biometal-fiber.html ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  4. To explore further • TOKI website: http://www2.toki.co.jp/biometal/english/contents.php • YouTube: http://www.youtube.com/watch?v=JJi2HgqfzJAhttp://www.youtube.com/watch?v=_cyDWKY9Yewhttp://www.youtube.com/view_play_list?p=B636E3A9DADEE295&search_query=biometal+nitinol ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  5. Biometal Fiber vs. Helix http://www.imagesco.com/nitinol/images/BMF3pic.jpg http://www.imagesco.com/nitinol/images/BMX4pic.jpg ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  6. Biometal Fiber vs. Helix • Biometal Fiber (BMF) has 4% length contraction, but high force through entire motion (enough to lift up to 150g) • Biometal Helix (BMX) can stretch to double it’s contracted length but lower force (up to 40g) • BMX is actually a coiled BMF ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  7. Major applications • Traditional Servo Motor Substitute • Robotics • Model aviation • Solenoid Substitute (Linear Motion) • Switches, relays, brakes, locks, valves etc • Applications where size matters ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  8. Basic Working Principle http://www.imagesco.com/nitinol/images/BMF1pic.jpg ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  9. Basic Working Principle http://www.imagesco.com/nitinol/images/BMX1pic.jpg ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  10. Basic Working Principle • Differs from shape memory alloys (SMA) because it does not return to shape; it stretches and contracts (actuates) like a muscle • Controlled through PWM, Temperature control, or Current regulation • Contracts when reaches 70ºC • Returns to length based when temperature cools (i.e current removed) • Contracts quickly, stretches slowly ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  11. Application Notes • Need connectors to mount (*incl. w purchase) • Smaller diameter is more pliable for smoother operation • Contracting force varies based on diameter • Strands are often placed in parallel for more force ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  12. Soft Robot http://www.ritsumei.ac.jp/se/~hirai/research/softrobot-e.html#notes Climbs hills or jumps powered by BMX ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  13. BioWire Micro Servo Tiny servo for ultralight applications http://www2.toki.co.jp/biometal/products/rc-1/SmartServoRC-1.jpg ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  14. BioWire Micro Servo http://www2.toki.co.jp/biometal/products/rc-1/smartservoRC-1bil2.gif ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  15. BioWire Micro Servo • Under 1 gram • Approximately 40x9x3mm • Torque of .015kg-cm • $35.99 • Powered by BMF ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  16. Comparable Micro Servo • 8 grams • Approximately 23x12x24mm • Torque of 131kg-cm • $13.99 • Much larger, though cheaper and more powerful http://www.servocity.com/assets/images/HS-55.jpg ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  17. Major Specifications Fiber (BMF) http://www2.toki.co.jp/biometal/download/downloadfiles/BMF_eng.pdf Helix (BMX) http://www2.toki.co.jp/biometal/download/downloadfiles/BMX_eng.pdf ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  18. Limitations • Motion is non-linear based on heating and cooling equation • Operation fails at ~70ºC/158ºF (failure to expand) • Cannot operate at high frequency without forced cooling (<3Hz) • Only for small applications ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  19. Availability • Available online in many different diameters • Fiber: .05, .075, .1, and .15 mm • Helix: .2, .32, .40, and .62 mm • Can buy BMX or BMF 150 from: http://www.imagesco.com/nitinol/biometal-fiber.html • $36.95 • Or from Toki Corporation: http://www2.toki.co.jp/biometal/english/contact-eng/eng_form.php ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  20. Package Includes • BioMetal Fiber • 1 meter fiber • 4 biasing springs • 12 heat resistant pulleys • 40 ‘spectacle’ terminals • 40 eyelet terminals • Instruction manual • BioMetal Helix • 20 millimeter coil • 4 biasing springs • 16 ‘spectacle’ terminals • 16 eyelet terminals • Instruction manual ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

  21. Conclusion • Good solution for very small actuators • Still new technology, fairly expensive • Scope of applications is only beginning to be explored ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

More Related