【摘要】 研究了一种单对磁极磁编码器的误差补偿方法。针对单对磁极磁编码器中存在的零位误差、灵敏度误差、正交误差和铁磁干扰等每一种误差进行分析,得出各自的误差表达式。为了便于误差补偿,总结出描述这种误差共性的表达式,此式将误差的形成过程假设为圆到椭圆的变化过程,其逆过程就是误差补偿的过程。实验结果表明,利用此种方法的磁编码器精度达到了0.02。,误差补偿效果明显。根据此方法研究的磁编码器具有成本低、精度高、使用方便的特点。更多还原

【Abstract】 An error compensation method for the single pair-pole encoder is studied.For each of the single-pole magnetic encoder,analyzed offset,sensitivity error,quadrature error and ferromagnetic interference error,the expression of each error is obtained.In order to facilitate the error compensation,the expression to describe the error common to this type is summed up.The formation process of the error can be assumed as the process of changing from circle to ellipse.Therefore the inverse of this process is the same as the process of error compensation.The experimental results show that the accuracy of magnetic encoder which used this method could reach 0.02°,thus the error compensation effect is obvious.The advantages of the magnetic encoder which is applied this method are low-cost,high-precision and convenient to use.更多还原