A Hysteresis dynamometer is a device used to measure torque or Load, of electric motors like AC Motors, DC Motors, DC Brushless, BLDC Motors, Stepping Motors etc. vital for testing and research purpose. It accurately measures torque and Load, essential for performance testing and optimization of electric motors.
Sugawara Hysteresis Dynamometer
An accurate grasp of load characteristics, cogging torque characteristics, and torque ripple characteristics is critical for electric motor performance evaluations. Measurements of load characteristics differ significantly from measurements of cogging torque/torque ripple characteristics. This is why a single type of torque sensor sometimes fails to provide precise measurements of these differing characteristics. Sugawara Laboratories provides a family of motor testing equipments designed to measure and evaluate the motor torque and Load characteristics.They offer a lineup of 13 models of HB Series Dynamometers with rated torques ranging from 5 mN·m to 50 N·m, including short plate models and models for temperature chambers.
Hysteresis Brake
A hysteresis brake is structured to rotate a rotor made of high permeability magnetic material inside an air gap containing a magnetic field formed by a cog-wheel-shaped stator. The magnetic flux flowing in the stator passes through the rotor, creating magnetic friction between the rotor and the stator, and acting as a non-contacting brake. This magnetic friction is proportional to the strength of the magnetic flux penetrating the rotor, and the strength of this magnetic flux can be adjusted by changing the strength of the exciting current applied to the coil. Therefore, a hysteresis brake makes it easy to adjust the braking force regardless of the rotation speed of the rotor.
