Automatic High-Accuracy Measurement System of Static Hysteresis Characteristics in High Permeability Material

Abstract

A micro-computer controlled high-precision system for measuring of the static hysteresis characteristics has been constructed. This systerm can be used to measure the hysteresis losses in new high permeability materials such as amorphous ribbons. In such materials the induced flux voltage waveforms consist of very sharp and large Barkhausen noises, and a considerable amount of error can be introduced in the loss measurement when the bandwidth of the flux voltage integrating system of is not suffisiently wide. The digital integrating system using a V-f converter, provides a bandwidth suffisient for measuring with high-precision the hysteresis losses in new high permeability materials.