Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Pendulum-and-hydrostat_control> ?p ?o. }
Showing items 1 to 31 of
31
with 100 items per page.
- 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 wikiPageRevisionID "525235724".
- Pendulum-and-hydrostat_control hasPhotoCollection Pendulum-and-hydrostat_control.
- Pendulum-and-hydrostat_control subject Category:Control_devices.
- Pendulum-and-hydrostat_control subject Category:Mechanisms.
- Pendulum-and-hydrostat_control subject Category:Pendulums.
- Pendulum-and-hydrostat_control subject Category:Torpedoes.
- Pendulum-and-hydrostat_control type Apparatus102727825.
- Pendulum-and-hydrostat_control type Artifact100021939.
- Pendulum-and-hydrostat_control type ControlDevices.
- Pendulum-and-hydrostat_control type Device103183080.
- Pendulum-and-hydrostat_control type Equipment103294048.
- Pendulum-and-hydrostat_control type Instrumentality103575240.
- Pendulum-and-hydrostat_control type Object100002684.
- Pendulum-and-hydrostat_control type Pendulum103909160.
- Pendulum-and-hydrostat_control type Pendulums.
- Pendulum-and-hydrostat_control type PhysicalEntity100001930.
- Pendulum-and-hydrostat_control type Whole100003553.
- 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 m.08dff6.
- Pendulum-and-hydrostat_control sameAs Q7162522.
- Pendulum-and-hydrostat_control sameAs Q7162522.
- Pendulum-and-hydrostat_control sameAs Pendulum-and-hydrostat_control.
- Pendulum-and-hydrostat_control wasDerivedFrom Pendulum-and-hydrostat_control?oldid=525235724.
- Pendulum-and-hydrostat_control depiction Pendulum_and_Hydrostat_Control.png.
- Pendulum-and-hydrostat_control isPrimaryTopicOf Pendulum-and-hydrostat_control.