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Centripetal/Mechanical Governors. By Aaron Zhou ID#: 20193983. Objective: To convey an understanding of the basic concept of centripetal governors. What Is It?. A centripetal governor is a mechanical feedback device for maintaining a particular revolution rate of a machine.

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centripetal mechanical governors

Centripetal/Mechanical Governors

By Aaron Zhou

ID#: 20193983

Objective: To convey an understanding of the basic concept of centripetal governors

what is it
What Is It?
  • A centripetal governor is a mechanical feedback device for maintaining a particular revolution rate of a machine.

“Negative feedback is a type of feedback, during which a system responds so as to reverse the direction of change. Since this process tends to keep things constant, it is stabilize and attempts to maintain homeostasis. When a change of variable occurs within a stable negative feedback control system, the system will attempt to establish equilibrium” - www.wikipedia.org

  • Common applications…
  • Extends life, gives engine a load, prevents overspeeding and engine failure.
james watt 1736 1819
James Watt (1736-1819)
  • Scottish engineer and inventor
  • Interest in steam engines
  • Work on steam engines and improvements to older models at University of Glasgow
  • The Watt Governor

Picture taken from http://www.katharinen.ingolstadt.de/physiker/watt.gif

how it works
How It Works
  • Governor uses 2 methods
    • Butterfly valve
    • Totally fuel air mixture cut-off
  • Maintain a near constant speed whatever the load or fuel supply conditions

Picture taken from :

http://en.wikipedia.org/wiki/Linkage_(mechanical)

demonstation
Demonstation
  • System at rest

Pictures taken from:

www.physics.montana.edu/ demonstrations/video/...

  • Begins to rotate
  • Governor at work
  • Equilibrium established
dissection
Dissection

Why Is It Made Of Plastic?

  • Metal is a conductor, cuts magnetic flux of the materials within engine
  • Metals prone to creep and crack propagation
  • Absorbs shock from engine resonant vibrations
references
References
  • www.wikipedia.org
  • www.howstuffworks.com
  • http://www.absoluteastronomy.com/encyclopedia/c/ce/centrifugal_force.htm
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