摘要
介绍了巨磁电阻梯度传感器工作原理,设计、制作了适用于实验教学的巨磁电阻转速测量实验装置,实现了通过单片机对步进电机转速的控制及对被测转盘转速的实时测量,给出了电机工作在不同转速状态下的测量结果,验证了同步电机转速与控制频率的变化关系。
This paper reports an experimental set-up of real time measuring the motor rotation velocity based on giant magnetoresistance ( GMR) sensor. The paper briefly reviews the working principle of the GMR sensor first,and then describes the design of the chip-controlled experimental set-up and its implementation. Measure-ments are then carried out for different rotation velocities of a stepping motor and the relation. Between the rota-tion velocity of the synchronous motor and control frequency is obtained and verified. This present experimental set-up can realize the real-time measurement of the rotation velocity of an object.
出处
《大学物理实验》
2016年第1期26-29,共4页
Physical Experiment of College
基金
大连理工大学教改项目(NO.ZX201311)
关键词
巨磁电阻
转速测量
单片机
步进电机
giant magnetoresistance
multilayer
measurement of rotation
single chip processor
stepping motor
