摘要
针对有刷直流测速发电机的输出特性线性误差较大这一问题,提出了一种基于霍尔效应的无刷式测速发电机。测速发电机由安装永磁磁钢的外定子、杯形转子和装配霍尔传感器的内定子三大部分组成,外定子中的永磁磁钢产生恒定磁场,杯形转子切割恒定磁场后产生感应电流,感应电流产生的磁场对内定子铁心中的霍尔元件进行作用,产生与杯形转子瞬时旋转角速度成正比的霍尔电势。本文推导了测速发电机的数学模型,包括输出特性和传递函数。对研制的无刷式测速发电机进行了特性测定实验,结果表明发电机的灵敏度系数约为61.1 m V/(rad/s),线性误差约为0.17%。
For the output characteristic linear error of the DC tachogenerator is obvious, a novel brushless tachogen- erator based on hall effect is presented. The tachogenerator is composed of three parts：outer stator with permanent magnet steelrotor and inner stator with hall sensor, a constant magnetic field is produced by permanent magnets in outer stator, then inductive current in rotor is generated by the cup rotor cutting constant magnetic field, and the magnetic fields generated by induced current have effects to hall element in the inner stator, finally, the hall voltage which is proportional to the instantaneous ratation angular velocity of cup rotor is received. Mathematical models of the tachogenerator are deduced in this paper,including output characteristic and transfer function. The characteristic determination test of tachogenerator was carried out, the results show that the sensitivity coefficient of the tachogen- erator is about 61.1 mV/（rad/s） ,and the linear error is about 0.17%.
出处
《传感技术学报》
CAS
CSCD
北大核心
2017年第3期467-470,共4页
Chinese Journal of Sensors and Actuators
基金
嘉兴市科技计划项目(2016AY13006)
浙江省自然科学基金项目(LQ14E050007)
嘉兴学院南湖学院重点科研项目(N41472001-9)
关键词
瞬时旋转角速度
霍尔效应
数学模型
特性测定
instantaneous ratation angular velocity
hall effect
mathematical models
characteristic determination test
作者简介
赵浩（1983-），男，讲师，主要研究方向为新结构传感器的设计、旋转机械与传动系统振动特性分析及抑制方法研究。主持浙江省自然科学基金、浙江省教育厅科研项目和嘉兴市科技计划项目等多项课题，在Sensors、REVSCIIN．STRUM、JVIBROENG和传感技术学报、计量学报等期刊上发表多篇论文，zhaoha0204@163．com。
