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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?. A centripetal governor is a mechanical feedback device for maintaining a particular revolution rate of a machine.

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Centripetal/Mechanical Governors

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  1. Centripetal/Mechanical Governors By Aaron Zhou ID#: 20193983 Objective: To convey an understanding of the basic concept of centripetal governors

  2. 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.

  3. 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

  4. 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)

  5. Demonstation • System at rest Pictures taken from: www.physics.montana.edu/ demonstrations/video/... • Begins to rotate • Governor at work • Equilibrium established

  6. 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

  7. References • www.wikipedia.org • www.howstuffworks.com • http://www.absoluteastronomy.com/encyclopedia/c/ce/centrifugal_force.htm

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