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Issue:
Error modeling of inductosyn angle measuring system
Author(s):
LIU Cheng-jun
,
QI Ming
,
ZOU Ji-bin
Pages:
51
-
55
Year:
2009
Issue:
9
Journal:
Journal of Harbin Institute of Technology
Keyword:
角度测量系统
;
FFT分析
;
误差模型
;
感应同步器
;
零位误差
;
细分误差
;
Abstract:
为了提高测角系统的精度,建立了基于离线数据辨识的误差补偿模型.根据实际测量得到的测角系统在一个机械周期内(0°
3
60°)的全零位误差数据和多个检测周期内的细分误差数据,提出了一种基于FFT分析结果与误差机理模型相结合的建模方法,利用测角系统的误差与感应同步器自身误差之间具有强相关性的特点,用离线数据辨识的误差模型对在线数据进行实时补偿.仿真结果表明,建立的零位误差和细分误差补偿模型将测角系统的全误差从±15″减小至±2.″与传统的误差模型比较,该模型适用性广,有较高的补偿精度.
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