Publication

Electromagnetic Model of an Ironless Inductive Position Sensor

Yves Perriard, Alessandro Danisi, Alessandro Masi
2012
Conference Papers

Abstract

An ironless position sensor is a novel sensing structure which exhibits intrinsic immunity to external magnetic fields, since it is characterized by air-cored supply and sensing windings. This new solution may be of significant interest for applications where external magnetic fields are present. In this paper, an analytical model of the working principle of the sensor is proposed. The effect of the moving coil flux on the overall sensed magnetic flux is described. The modeling of such a sensor acts as a design tool of primary importance in the framework of the synthesis of the device. The model is verified by simulations of a finite element structure of the sensor, expressly prepared for this purpose.

Official source

https://infoscience.epfl.ch/entities/publication/84410b30-7d12-47f7-b058-ab126fbb9186

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Yves Perriard, Alessandro Danisi, Alessandro Masi
2012
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/84410b30-7d12-47f7-b058-ab126fbb9186

About this result

Related concepts (32)

Magnetic field

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field. A permanent magnet's magnetic field pulls on ferromagnetic materials such as iron, and attracts or repels other magnets.

Magnetic moment

In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. Examples of objects that have magnetic moments include loops of electric current (such as electromagnets), permanent magnets, elementary particles (such as electrons), composite particles (such as protons and neutrons), various molecules, and many astronomical objects (such as many planets, some moons, stars, etc).

Earth's magnetic field

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.

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