Technology

MAGNETOSTRICTION

Non-contact and non-optical operating principle

ALGORITHM

Balluff transducer signal processing logic

SYSTEM INSTALLATION

Simple and quick installation of all system elements

ROUTE MARKING ELEMENTS

Wide range of magnetic markers for various applications

Magnetostriction

Magnetostrictive effect

The measuring device (waveguide) is made of a special iron-nickel alloy and has an external diameter of 0.7 mm and an internal diameter of 0.5 mm. A copper conductor runs along the entire length of this tube. The measurement process is initiated by a short current pulse. This current generates a magnetic field, which propagates by rotating along the waveguide. At the measured point of the path, a permanent magnet is used as a marking element, the field lines of which are directed at right angles to the electromagnetic field.

In the area of the waveguide where both magnetic intersect, the magnetostrictive effect leads to elastic deformation of the waveguide (deformation at the micro level), which generates a mechanical wave propagating in both directions. The propagation velocity of this wave in the waveguide is 2830 m / s and is practically insensitive to external factors (for example, temperature, shock loads, pollution).

The part of the wave that reaches the far end of the waveguide is suppressed, while the signal entering the signal transducer becomes electric due to the inverse magnetostriction effect. The wave propagation time from the point of origin to the transducer is in direct proportion to the distance between the permanent magnet and the signal transducer. Thus, the measurement of time allows you to determine the distance with exceptional accuracy.

Magnettrack algorithm

Positioning algorithm

There are 4 magnettrack data processing algorithms :

Fixed markup algorithm . The classic magnettrack program that processes data from a Balluff BTL linear displacement transducer . Magnetic marking for this algorithm is rigidly tied to the given source coordinates for each marker. The error of the coordinates of the marker installation is added to the measurement error of the absolute coordinate of the object.
Adaptive algorithm . It is the next generation of the magnettrack system algorithm after the classic version. Provides the greatest reliability of measuring the position of the object. The core of the adaptive algorithm analyzes the magnetic signatures of the areas of space, on the basis of which both the positioning of the device and the automatic construction of the magnetic marking circuit are provided = based on which device positioning as well as automatic magnetic marking route building is provided.
Adaptive incremental algorithm. Completely copies the original adaptive algorithm, adding to it the ability to measure coordinates by one position marker in the working area of the transducer. When the power is restarted or the algorithm is turned on, for absolute position measurement, the object / transducer must pass over any unique interval marker in the route.
Discrete algorithm. Gives the coordinates of the object relative to the interval marker, completely located in the working area of the transducer. The algorithm contains diagnostics of the system.
Discrete incremental algorithm. Extends the range of positioning of the object, allowing you to calculate its coordinate by incremental / positional markers.

Route marking elements

The track of the magnettrack positioning system consists of a system of markers that are installed along the path of the positioning object so that at least one marker is located at each positioning point in the active zone of the transducer. Markers are globally divided into two types: positional / incremental (PM) and interval (IM).

Below is a table of the main marker parameters for each caliber and type.

Caliber number	Type of amker	D0, мм	Vertical contact area, mm (S)	Lateral Contact Area, mm ( Sw )
Caliber 1	PM	170	15	30 (±15)
Caliber 1	IM	170	15	30 (±15)
Caliber 2	PM	200	30	60 (±30)
Caliber 2	IM	200	30	60 (±30)
Caliber 3	PM	260	45	80 (±40)
Caliber 3	IM	260	45	80 (±40)
Caliber 4	PM	300	60	100 (±50)
Caliber 4	IM	300	60	100 (±50)

Learn more...

Universal Sensor Holder for Flat Markers

SYSTEM INSTALLATION

Installation of elements of the magnettrack positioning system is carried out using a universal mounting system consisting of aluminum or steel profiles, corners and guides. Also, in some cases, custom-made fasteners are used to fulfill even the most stringent installation requirements.

Mounting the transducer is carried out using a system of aluminum profiles, allowing you to adjust the position of the transducer in three planes, and also, if necessary, change the angle of the transducer relative to the mounting surface.

The length of the profiles is selected taking into account the installation space at the sensor installation site and allows you to flexibly adjust the position of the transducer relative to the track of magnetic markers for reliable positioning along the entire length of the track.

Interval Marker Holder

Markers are fastened mainly using standard clamp holders suitable for installation on various structural elements, such as profile beams, stiffeners, and other protruding structural elements. If it is necessary to place markers on a plane, for example, on the base of the rail, U-shaped fasteners are used, mounted on the surface using bolts, studs or simple welding.

Learn more...