摘  要：研制了一种变磁阻式位置传感器。利用简单充磁的永磁磁环和变磁阻式软磁转子形成正弦磁场，再用空间相互正交的线性霍尔元件检测该磁场，从而可以用后续电路解算出转子位置。传感器具有成本低、机械强度和可靠性好、精度高以及可输出绝对位置信号等优点，可用于电动机伺服系统中。
关键词：变磁阻；线性霍尔元件；转子位置传感器；应用

Abstract: Proposed a variable reluctance rotor position sensor.A simple magnet ring and a variable-reluctance soft-magnetic rotor built a sinusoidal field,whilst two linear Hall-effect components which orthogonally mounted detected the field,and their output signals were processed to obtain the rotor position.The sensor has the advantages of low cost,good ruggedness,high reliability,high precision and ability of absolute-position signal output.The sensor can be used in motor servo systems.
Key Words: Variable reluctance;Linear Hall-effect component；Rotor position sensor；Application