Position & Force Sensors

AST position sensors are designed to determine relative movements between two mechanical components and are adapted to the respective application. This entails using either 3D Hall or inductive technologies. The stationary part of the sensor interacts with the target attached to the moving part via a contactless and wear-resistant inductive or magnetic coupling. The shape of both the stationary sensor part and the target can mostly be adapted to the respective application. 3D Hall technology offers many advantages from being able to define positioning in up to 3 axes with measuring ranges of up to100mm whereas inductive technology demonstrates its strengths in one-dimensional measurements in ranges of up to 500mm. Both technologies feature sensors where both the stationary and the moving parts are protected by encapsulation against environmental influences, thus enabling their use even under adverse environmental conditions. Besides the “position", its derived quantities such as "velocity" or "acceleration" can also be recorded by the sensor. The position sensors are used in applications ranging from the measurement of brake pad wear in the mobility sector to applications for robot grippers and detecting imbalance, e.g., in industrial machinery.

AST's force/torque sensors utilize the strain on the given mechanical structure by the applied forces and torques. This strain is measured by the sensor using the differential eddy current principle, which achieves a resolution in the nanometer range. The existing structural component serves as a reference for the force-torque measurement whereas the shape of the sensors can mostly be adapted to the conditions of the structural mechanics. In most cases, a housing that seals off the structural component protects the sensor from environmental influences up to a protection class of IP6K9K. Our force/torque sensors are deployed, for example, in the electrically operated brakes of vehicles or for determining torques in motors and transmissions.

All AST sensors have a microcontroller and can calculate complex algorithms directly at the sensor. An output signal processed in this way is made available in analog or digital form.