摘要
为精确测量伺服动力装置变量柱塞泵的转速,为其设计了一种小型化、高灵敏、抗干扰、高可靠、宽温域的霍尔型转速传感器;针对电感式转速传感器对较低转速测量不灵敏、易受磁场干扰等缺点,提出了一种霍尔型转速传感器的设计方法:利用霍尔电路对磁场信号反应灵敏的特性,另外在转速变换电路中配合以较高的阈值电压,使其具有灵敏度高和抗干扰能力强的特点;并结合整体任务要求,对其进行了小型化设计、宽温域材料选用及元器件的降额设计等措施;经试验验证,霍尔型转速传感器可以精确测量电机全量程(从低到高)的转速,灵敏度不随转速的变化而变化,且不受外界磁场的干扰,参数性能满足整体要求,具有广泛的应用前景。
In order to measure the revolving rotational speed of the variable displacement piston pump of servo power plant precisely, a miniaturized Hall-type rotational speed sensor which has the characters of hypersensitive, anti-interference, high reliable and wide temper ature range is designed. In allusion to the disadvantage of the inductance type transducer, such as the low sensitivity and the bad capacity of resisting disturbance, a design approach of the Hall-type rotational speed sensor is presented. The specialty of hall circuit, which is hyper-sensitive to the magnetic field signal is utilized. Besides, a high threshold voltage transformational circuit is used to enhance the characters of hypersensitive and anti-interference of the hall circuit. According to the task demands, a miniaturized design is proceed, a kind of material which has wide temperature range is selected and a derating design is used. On the basis of experimental verification, the Hall-type rotational speed sensor can measure the rotational speed of the full range of the electrical machine （from slow to quick） accurately. The sensitivity of the rotational speed senor doesn＇t change with the rotational speed of electrical machine and unaffected by the external magnetic field. The parameter performance meets the requirements of the model. This kind of Hall-type rotational speed sensor has a broad application prospects.
出处
《计算机测量与控制》
2016年第4期284-286,共3页
Computer Measurement &Control
关键词
霍尔型
转速传感器
抗干扰
小型化
Hall
rotational speed sensor
anti interference
miniaturization
