空间控制技术与应用2025，Vol.51Issue(6)：86-96,11.DOI:10.3969/j.issn.1674-1579.2025.06.008
考虑多因素耦合的位置传感器自校准方法研究
Research on Self-Calibration Method for Position Sensor Considering Multi-Factors Coupling
摘要
Abstract
The position self-calibration method is advantageous for reducing position measurement deviation in position sensor and improving the pointing accuracy of servo systems in spatial pointing mechanisms.Various non-ideal factors couple together to cause position deviation that encompass fundamental frequencies,second harmonics,and higher-order harmonics.However,existing self-calibration methods primarily focus on second harmonics arising from singular factor,overlooking the fundamental and higher-order harmonics resulting from the coupling of multiple factors.To address this issue,a position self-calibration method that integrates an expanded state observe(ESO)with an infinite impulse response(IIR)filter is proposed in this paper.First,the model for position deviation under multi-factors coupling is established.Second,the speed observer is utilized to estimate the speed deviation and its integral signal,which is then fed into the IIR filter to extract both the DC and AC components,along with the convergence conditions for the observer.Finally,the position measurement deviation is derived from the AC component,and the compensation lookup table is constructed.Simulation and experimental results indicate that the proposed method effectively enhances the accuracy of the calibrated position.关键词
自校准/位置偏差/滤波器/观测器Key words
Self-calibration/position deviation/filter/observer分类
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LI Jialin,HU Hengzai,ZHAO Lei,ZHANG Qiang,GUO Chaoyong,LIU Xiangdong..考虑多因素耦合的位置传感器自校准方法研究[J].空间控制技术与应用,2025,51(6):86-96,11.基金项目
空间驱动与操控机构专业实验室开放基金课题资助(No.BICE-SDMM-2023-03) Funded by Space Drive and Manipulation MechanismLaboratory of BICE(No.BICE-SDMM-2023-03) （No.BICE-SDMM-2023-03）
