Abstract A inductive instantaneous rotation angular rate sensor based on Hall effect is presented, the sensor is mainly composed three parts, including stator core and winding, Hall element and permanent magnet rotor, the flux distribution of permanent magnet rotor in the air gap is sine regularity. The permanent magnet rotor is connected to the test device coaxially when at work, and the magnetic field of permanent magnet rotor is coupling with the stator winding, then the induction electromotive force in stator windings is generated, which is corresponding to the instantaneous rotation angular velocity. For the stator winding is directly connected with the control terminals of the Hall element, the current in Hall element is produced, and the DC Hall potential is generated under the effect of magnetic field of permanent magnet rotor, which is proportional to the instantaneous rotation angular velocity. The output characteristic of sensor is deduced, and the determination testing is carried out, the results show that the sensitivity coefficient of sensor is about 203 mV/(rad·s-1) , and the linear error is about 0.5%.
2018, Vol. 39 
