Publications by authors named "Xinji Lu"
A Method to Improve Mounting Tolerance of Open-Type Optical Linear Encoder.
Sensors (Basel)
February 2023
Accuracy becomes progressively important in the wake of development in advanced industrial equipment. A key position sensor to such a quest is the optical linear encoder. Occasionally, inappropriate mounting can cause errors greater than the accuracy grade of the optical linear encoder itself, especially for open-type optical linear encoders, where the mounting distance between the reading head and main scale must be accurately controlled.
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- Optical encoders are essential for precise displacement measurement and motion control, categorized into absolute and incremental types.
- The study focuses on absolute linear encoders used in CNC machines, highlighting the significance of reducing subdivision error for better positioning accuracy.
- Two methods were proposed to decrease the subdivision error and were successful, resulting in a reduction from ±0.218 μm to ±0.135 μm (a 38.07% improvement), with effective suppression of harmonics confirmed through FFT analysis.