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- Pendulum-and-hydrostat_control abstract "Pendulum-and-hydrostat control is a simple system for automatically controlling the depth in water of a machine. The hydrostat senses the depth; initially, this function was sometimes performed by a simple bellows. However, with only a hydrostat the system would tend to oscillate around the desired depth. The pendulum, mounted at right angles within the machine, senses the angle at which the machine sits relative to the horizontal. The angle information is combined with the depth information in order to provide control signals to the machine's vertical-plane steering mechanism. The angle information is key in that it provides a damping term to the oscillation.In control theory the effect of the addition of the pendulum can be explained as turning the simple proportional controller into a proportional-derivative controller since the depth keeping is not controlled by the depth alone anymore but also by the derivative (rate of change) of the depth which is roughly proportional to the angle of the machine.It was mainly used to control the depth of torpedoes until the end of the Second World War, and reduced depth errors from ±40 feet (12 meters) to as little as ±6 inches (0.15 m).It was invented by Robert Whitehead and was nicknamed The Secret.".
- Pendulum-and-hydrostat_control thumbnail Pendulum_and_Hydrostat_Control.png?width=300.
- Pendulum-and-hydrostat_control wikiPageExternalLink DIiw.
- Pendulum-and-hydrostat_control wikiPageExternalLink ustorp1.htm&date=2009-10-25+09:25:57.
- Pendulum-and-hydrostat_control wikiPageID "2931020".
- Pendulum-and-hydrostat_control wikiPageLength "1935".
- Pendulum-and-hydrostat_control wikiPageOutDegree "14".
- Pendulum-and-hydrostat_control wikiPageRevisionID "659816976".
- Pendulum-and-hydrostat_control wikiPageWikiLink Bellows.
- Pendulum-and-hydrostat_control wikiPageWikiLink Category:Control_devices.
- Pendulum-and-hydrostat_control wikiPageWikiLink Category:Mechanisms_(engineering).
- Pendulum-and-hydrostat_control wikiPageWikiLink Category:Pendulums.
- Pendulum-and-hydrostat_control wikiPageWikiLink Category:Torpedoes.
- Pendulum-and-hydrostat_control wikiPageWikiLink Control_theory.
- Pendulum-and-hydrostat_control wikiPageWikiLink Derivative.
- Pendulum-and-hydrostat_control wikiPageWikiLink File:Pendulum_and_Hydrostat_Control.png.
- Pendulum-and-hydrostat_control wikiPageWikiLink Muscular_hydrostat.
- Pendulum-and-hydrostat_control wikiPageWikiLink PID_controller.
- Pendulum-and-hydrostat_control wikiPageWikiLink Pendulum.
- Pendulum-and-hydrostat_control wikiPageWikiLink Robert_Whitehead.
- Pendulum-and-hydrostat_control wikiPageWikiLink Torpedo.
- Pendulum-and-hydrostat_control wikiPageWikiLink World_War_II.
- Pendulum-and-hydrostat_control wikiPageWikiLinkText "Pendulum-and-hydrostat control".
- Pendulum-and-hydrostat_control wikiPageWikiLinkText "bellows and pendulum system".
- Pendulum-and-hydrostat_control wikiPageWikiLinkText "depth control".
- Pendulum-and-hydrostat_control wikiPageWikiLinkText "hydrostatic valve and pendulum balance".
- Pendulum-and-hydrostat_control wikiPageWikiLinkText "hydrostatic valve and pendulum".
- Pendulum-and-hydrostat_control wikiPageWikiLinkText "pendulum-and-hydrostat control".
- Pendulum-and-hydrostat_control wikiPageUsesTemplate Template:Reflist.
- Pendulum-and-hydrostat_control wikiPageUsesTemplate Template:Sci-stub.
- Pendulum-and-hydrostat_control subject Category:Control_devices.
- Pendulum-and-hydrostat_control subject Category:Mechanisms_(engineering).
- Pendulum-and-hydrostat_control subject Category:Pendulums.
- Pendulum-and-hydrostat_control subject Category:Torpedoes.
- Pendulum-and-hydrostat_control hypernym System.
- Pendulum-and-hydrostat_control type Dynamic.
- Pendulum-and-hydrostat_control type Machine.
- Pendulum-and-hydrostat_control type Object.
- Pendulum-and-hydrostat_control type Vehicle.
- Pendulum-and-hydrostat_control comment "Pendulum-and-hydrostat control is a simple system for automatically controlling the depth in water of a machine. The hydrostat senses the depth; initially, this function was sometimes performed by a simple bellows. However, with only a hydrostat the system would tend to oscillate around the desired depth. The pendulum, mounted at right angles within the machine, senses the angle at which the machine sits relative to the horizontal.".
- Pendulum-and-hydrostat_control label "Pendulum-and-hydrostat control".
- Pendulum-and-hydrostat_control sameAs Q7162522.
- Pendulum-and-hydrostat_control sameAs m.08dff6.
- Pendulum-and-hydrostat_control sameAs Q7162522.
- Pendulum-and-hydrostat_control wasDerivedFrom Pendulum-and-hydrostat_control?oldid=659816976.
- Pendulum-and-hydrostat_control depiction Pendulum_and_Hydrostat_Control.png.
- Pendulum-and-hydrostat_control isPrimaryTopicOf Pendulum-and-hydrostat_control.