A differential electromagnetic induction torque sensor and its finite element analysis

• DOI: 10.1063/1.4919908
• Publication Date: 2015-05-13T17:41:47Z
• Authors: Zhao Hao
• Keywords: Damping torque

Torque is an important parameter for condition monitoring and fault diagnosis rotary machines. This paper describes a new structure differential torque sensor based on the principle of electromagnetic induction. The method involves construction pulsating flux by excitation winding sensor, torsion angle produced load converted into displacements output winding. Last, generates induction potential force, which proportional to as seen through coupling. Sensor sensitivity would be reduced effect; therefore, this presents suppression that can ensure not affected. transfer function constructed Laplace transformation. characteristics are simulated finite elements, including influence coil numbers voltage frequency. was calibrated testing machine, experimental results indicated about 18.2 mV/Nm, non-repeatability error 2.3%, non-linear 3.3%, hysteresis 2.6%.