1. Actuators, Part II Fred Donelson Kevin McKone

2. A second actuator that is often used is known as a solenoid

3. It moves a rod by electromagnetic energy

4. Click on the link below to learn the basics on how a solenoid works: http://www.youtube.com/watch?feature=endsc reen&NR=1&v=hsoggQOoG4s http://www.youtube.com/watch?feature=endsc reen&NR=1&v=hsoggQOoG4s

5. Finally, we sometimes use the pressure of fluids to move objects

6. When we use a gas as the fluid, we call it a pneumatics system

7. When we use liquid as the fluid, we call it a hydraulics system

8. Comparing Electrical and Fluid Actuators

9. A simple hydraulic system can be made out of syringes and aquarium tubing

10. A simple ROV with a hydraulic actuator

11. Click the two links below to see some simple but effective hydraulic systems in action: http://www.youtube.com/watch?v=VFje0G69ku 8&feature=related http://www.youtube.com/watch?feature=endsc reen&v=vsF95qA1x7I&NR=1 http://www.youtube.com/watch?v=VFje0G69ku 8&feature=related http://www.youtube.com/watch?feature=endsc reen&v=vsF95qA1x7I&NR=1

12. For ideas on building a linear actuator with a motor and some PVC, check out this link: http://blog.davidjbarnes.com/2009/03/ma king-linear-actuator-for-robots.html http://blog.davidjbarnes.com/2009/03/ma king-linear-actuator-for-robots.html

13. So … go have some fun and build yourself an actuator!!