Actuators, Part II Fred Donelson Kevin McKone

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

It moves a rod by electromagnetic energy

Click on the link below to learn the basics on how a solenoid works: reen&NR=1&v=hsoggQOoG4s reen&NR=1&v=hsoggQOoG4s

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

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

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

Comparing Electrical and Fluid Actuators

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

A simple ROV with a hydraulic actuator

Click the two links below to see some simple but effective hydraulic systems in action: 8&feature=related reen&v=vsF95qA1x7I&NR=1 8&feature=related reen&v=vsF95qA1x7I&NR=1

For ideas on building a linear actuator with a motor and some PVC, check out this link: king-linear-actuator-for-robots.html king-linear-actuator-for-robots.html

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