Fluxgate Compass - Hologram Projector Manufacturer - Laser Stage Lighting Manufacturer

Please help improve this article by adding citations to reliable sources

. Unsourced material may be challenged and removed. (May 2008)

A fluxgate inclinometer/compass

The basic fluxgate compass is a simple electromagnetic device that employs two or more small coils of wire around a core of highly permeable magnetic material, to directly sense the direction of the horizontal component of the earth's magnetic field. The advantages of this mechanism over a magnetic compass are that the reading is in electronic form and can be digitised and transmitted easily, displayed remotely, and used by an electronic autopilot for course correction.

To avoid inaccuracies created by the vertical component of the field, the fluxgate array must be kept as flat as possible by mounting it on gimbals or using a fluid suspension system. All the same, inertial errors are inevitable when the vessel is turning sharply or being tossed about by rough seas. To ensure directional readings that are adequately stable, marine fluxgate compasses always incorporate either fluid or electronic damping. An alternative is to use a 3-axis fluxgate magnetometer to provide a 3D flux vector, and the magnetic heading is derived from the flux on a plane perpendicular to gravity, thus providing immunity from pitching, and rolling.

Fluxgate compasses and gyros complement one another nicely. The fluxgate provides a directional reference that's stable over the long term, apart from changing magnetic disturbances, and the gyro is accurate over the short-term, even against acceleration and heeling effects. At high latitudes, where the earth's magnetic field dips downward toward the magnetic poles, the gyro data can be used to correct for roll-induced heading errors in the fluxgate output. It can also be used to correct for the roll and heel-induced errors that often plague fluxgate compasses installed on steel vessels.

See also

Magnetic compass

Gyrocompass

This engineering article is a stub. You can help Wikipedia by expanding it.

vde

Categories: Engineering stubs | Navigational equipmentHidden categories: Articles lacking sources from May 2008 | All articles lacking sources

by: gaga

POST COMMENT

Energy Supplements: Important Step To Good Health Franchise Lawyer - A New Breed Of Legal Eagle A Look at New and Old Decking Ideas Your New Website - The First Steps Save Energy Through Double Glazing In Widnes Earth4energy Manual-Helpful in solving the problem of energy crisis and environmental protection issue Eating For Energy Download-Help you have more energy to face the challenges, prevent your skin aging, lose weight in a natural way and so on Colorful Burberry New Products For You To Choose The new iPhone 4 review, is it worth it? Forex Income Engine - 3 new Forex trades Do You Need A New Air Conditioning Unit? Realtek Als4000 Driver - New Download ! DEMOCRAISM, a brand new economic concept for the day, tomorrow and the next 100 years. Vol-1