Abstract :
The author presents the characteristics and the performance of a novel variable-reluctance sensor. He describes two designs for this inductive transducer which are very easy to realize. They are based on two shapes, both of which generate a sinusoidal variation of the air gap and therefore an inversely sinusoidal variation of the reluctance. The first shape utilizes an off-centering rotor, the second a buckled surface. The performance, resolution (15 bits), and accuracy (±3 of arc) of the prototype are presented. The prototype demonstrates the good measurement performance of this low-cost shaft-angle transducer, as well as its robustness, reliability, and stability
Keywords :
angular measurement; magnetic circuits; reliability; transducers; accuracy; air gap; buckled surface; designs; inductive transducer; off-centring rotor; performance; prototype; reliability; resolution; robustness; shaft-angle transducer; stability; variable-reluctance sensor; Coils; Geometry; Magnetic cores; Magnetic sensors; Mechanical sensors; Sensor phenomena and characterization; Stator cores; Temperature sensors; Transducers; Wearable sensors;
