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Skip to 0 minutes and 13 secondsRight. This set up is designed to show the benefits of having closed loop speed control. So we'll have the Rover going up the ramp with closed loop control so it drives at a constant speed, and then see what happens if we try to do it without the feedback. And we'll find it won't work half as well. So we'll start off going up the hill with closed loop speed control. Constant speed, quite happily.

Skip to 0 minutes and 40 secondsNow we flip to open loop, and the batteries are such that there's not enough oomph to get the robot to move at all. Now, off it goes, and it's back driving at a constant speed.

Demo Speed Control

The two previous steps have explained why control is needed and how it is achieved, and these have been illustrated in the previous video in Step 3.5.

In the video above you can see what happens to the actual Rover when we have speed control and when it is turned off.

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This video is from the free online course:

Begin Robotics

University of Reading

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