Feedback more than loud noise and joysticks
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Feedback: More than Loud Noise and Joysticks PowerPoint PPT Presentation


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Feedback: More than Loud Noise and Joysticks. James Wnorowski. What is Feedback?. When you put a microphone too close to a speaker? Force Feedback Joysticks? Something else entirely?. Stability. Which pendulum is stable, and why? Both placements are in equilibrium.

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Feedback: More than Loud Noise and Joysticks

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Feedback: More than Loud Noise and Joysticks

James Wnorowski


What is Feedback?

  • When you put a microphone too close to a speaker?

  • Force Feedback Joysticks?

  • Something else entirely?


Stability

  • Which pendulum is stable, and why?

  • Both placements are in equilibrium.

  • What happens if I push each mass a little to the side?


Demo

  • The first time, I just let the flashlight fall

  • The second time, I moved my hand so that it was under the flashlight, preventing it from falling

  • This is an example of Negative Feedback


Feedback, Revisited


Review

  • To make systems stable, we use Negative Feedback.

  • Joystick an example of Negative Feedback.

  • Speaker / Microphone combination an example of Positive Feedback.


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