SENSOR MAGNETJOINED IN A SLEEVE
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Permanent magnets are used in many sensor applications as signal transmitters for Hall sensors and/or magnetoresistive sensors. The magnetic fields are relatively low, so external magnetic interference fields could lead to incorrect measurement results. In such cases, magnetic shielding is beneficial.
Magnetic shielding
No adhesive bonds
Low use of magnetic material since wall thicknesses of up to 1.5 mm can be implemented
Tight tolerances
no adhesive gaps and therefore less imbalance
Magnetic alloy without dysprosium
Precise magnetisation
efficient production
can be produced in a single step
Compact installation space due to the use of highly remanent magnetic material
Speeds of more than 50,000 rpm are possible (burst protection)
Design according to customer requirements
Typical applications of magnetic field sensors include the contact-free detection of position, rotation and speed. Shielding is especially important in the e-mobility sector because of the interference fields that are prevalent there, for example in electro-hydraulic brake systems.
Depending on the version, the rotor position of a motor is transferred to the sensor element via the sensor magnet. With the help of the electrical system, the signals for functions such as the anti-lock braking system, tracking control system, electronic brake force distribution, adaptive cruise control or hill start assist and hill descent control can be made available.
In addition to electro-hydraulic brake systems, these types of sensor magnets are also used in many other safety-related applications or extras that increase the driving comfort. However, they are especially used where shielding is required to prevent opposing fields for safety reasons in order to prevent accidents and protect pedestrians, for example with electronic steering (including rear-axle steering), automatic gear selection or seatbelts.
In terms of the extras, these applications include seat adjustments, power windows or electric sunroofs, electric trunk lids or ventilation flaps for a pleasant interior temperature. Sensor applications are also used for engine management and exhaust gas recirculation (EGR).
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With our unique linked chain of areas of expertise, we can act as a specialist and as an all-rounder, depending on what is required, as a one-stop shop for high-quality processes. Together, we can transform a good idea into a genuine com-petitive advantage. After all, for you, the perfect amalgam of experience, expertise and technical implementation means, above all, one thing – efficiency. This creates results that firmly embed success in your products.
MS-Schramberg has stood for solution expertise and quality for more than half a century. We are one of Europe’s leading manufacturers of permanent magnets and assemblies. With around 600 employees, we develop and produce customer-specific articles in three plants in the Black Forest, which are used successfully by companies from a wide range of industries worldwide.
The requirements expected of permanent magnets and magnet assemblies are becoming ever more individual and, at the same time, ever more complex. We therefore take pleasure in casting light on the entire value-added chain: We are there beside you as a dependable partner, all the way from shared product development to on-schedule delivery.
