1 / 14

Controlling Speed Mechanically

Controlling Speed Mechanically. Engr 315 Control Systems Calvin College 8 December 2004 Brian Katerberg Andy Vander Moren. The Original Governor. James Watt’s Flyball Governor. Used to prevent steam engines from overheating while responding to the applied loads.

Albert_Lan
Download Presentation

Controlling Speed Mechanically

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. Controlling SpeedMechanically Engr 315 Control Systems Calvin College 8 December 2004 Brian Katerberg Andy Vander Moren

  2. The Original Governor James Watt’s Flyball Governor Used to prevent steam engines from overheating while responding to the applied loads. http://home.carolina.rr.com/microhydro/governors.html

  3. Modern Governor http://home.carolina.rr.com/microhydro/governors.html

  4. Electrical Speed Controls • Tachometer • Automotive Cruise Control • Andy Wallner’s Presentation Yesterday

  5. Why Use an Electronic Governor? • Allows for very precise governing • Requires very limited amount of moving parts • Can fit in small areas • Easy to adjust for changes in application • Interfaces easily with other controlling devices

  6. Why Use a Mechanical Governor? • Could be less expensive • Can use in wide range of conditions • Marine Applications • Extreme Temperatures • Usually easier to troubleshoot • More transparent

  7. Mechanical Governor Shortcomings • Have a delayed response time called “droop” • This delay in response time induces something called “hunting” • Can be thought of in terms of overshoot and over/under damping • Can tune a mechanical system to minimize hunting using additional external mechanical governors

  8. Simple MatLAB Simulation

  9. Relation to Our Senior Design Project • We are building a winnowing machine for use in Kenya • Need some sort of governing device to control the speed of our fan • Device must be simple, easy to use, and low cost • Kenyan’s background should be taken into account especially for repairs • Not much electrical experience • Bikes are major form of transportation

  10. There Can Be! Governors…in Bikes? Di2 (Digitally Integrated Intelligence) Automatic Derailleur www.shimanocycling.com

  11. Maximum Air Speed

  12. Stability Graph

  13. Mechanical Governor A Governor on a Bike Questions?

More Related