Analysis of Output Characteristic Model of Magnetostrictive Displacement Sensor Under a Helical Magnetic Field and Stress
An output characteristic model is developed to predict the response of the output voltage obtained from the magnetostrictive displacement sensor, which is simultaneously subjected to stress and helical magnetic fields. The model is based on the consideration of the Wiedemann effect, the piezomagnetic effect, and the Jiles-Atherton model. This research predicts and investigates the effects of the stress properties and the helical magnetic field on the magnetostrictive displacement sensor output characteristics. The induced voltage increases with an increasing magnetic field and decreases with increasing stress. These results prove that the magnetic field and stress have significant effects on the sensor's output. They provide important guidance in designing magnetostrictive displacement sensors.