Drive Technology

Current-controlled (electric) hysteresis brakes and clutches:
A magnetic field is generated by a coil through which direct current flows, which is variable depending on the current supplied and is therefore well suited for control processes. Hysteresis brakes function evenly from standstill to the design-possible maximum speed. The torque shows a hysteresis curve, ie the torque is slightly larger or smaller, depending on whether the excitation current has previously increased or decreased.

Applications:

Electrical hysteresis brakes are used by the industry to regulate web tension for foils, paper rolls, etc. and can also be controlled via laser sensors for measuring the diameter.

They are used in the automotive industry, for example to test actuators or servomotors for load and continuous performance. Stepper motors for seat adjustment, air conditioning, steering systems, window regulators, tailgate locks, headlight range adjustment, windscreen wipers with permanent or electric hysteresis brakes are tested.
They are also used in the printing industry and in gear construction to test gears for continuous loading.
These brakes are also used in the two-wheeler industry to test chains, e-bike motors, sprockets, etc.
Manufacturers of chainsaws, circular saws, household appliances such as mixers, washing machines, cordless screwdrivers, drills, jigsaws, turbines, wind turbines, etc. use hysteresis brakes to simulate loads.

Hysteresis brakes can also be used in aerospace in the high-vacuum area thanks to special bearings.