在工程技术领域,常常要测量角度或以角度为中间量的其它物理量。飞行试验中,更需要测量飞机运动部件的角位移,如飞机的方向舵、升降舵、副翼、襟翼的角位移,飞机的调整片、阻流板、刹车机构、推力控制杆、液压和空调机构的位移以及飞机其它操纵和控制机构的位移,以确定飞机的技术性能。上述测量,一般由角位移传感器来完成。通常使用的是两类传感器:一类是接触式传感器,如电位计式传感器,另一类是非接触式传感器,如电容式、电感式传感器和同步器等。电位计传感器的优点是结构简单、成本低、使用方便。缺点是噪声大、寿命短、易受振动和冲击影响。电容式、电感式传感器和同步器与接触式相此,具有精度高、分辨力高、可靠性高、寿命长等优点,缺点是结构复杂、需要一个复杂的信号调节器。本文介绍的霍尔角 In the field of engineering technology, it is often necessary to measure angles or other physical quantities that are intermediate in angle. Flight tests also need to measure the angular displacement of moving parts of aircraft such as the aircraft’s rudder, elevator, ailerons, angular displacement of flaps, aircraft trim, spoilers, brake mechanisms, thrust control rods, hydraulic and air-conditioning mechanisms Displacement and displacement of other maneuvering and control mechanisms of the aircraft to determine the technical performance of the aircraft. The above measurement, usually by the angular displacement sensor to complete. Two types of sensors are commonly used: one is a contact sensor such as a potentiometer sensor and the other is a non-contact sensor such as a capacitive sensor, an inductive sensor and a synchronizer. Potentiometer sensor has the advantages of simple structure, low cost, easy to use. The disadvantage is noise, short life, vulnerable to vibration and impact. Capacitive, inductive sensors and synchronizers and contact with this, with high precision, high resolution, high reliability, long life and other advantages, the disadvantage is the complex structure, the need for a complex signal conditioner. This article describes the Hall angle