一种绝对式时栅适配增量式光栅数控系统的时空同步精度补偿方法及系统
By employing spatiotemporal reference calibration, dual-clock synchronization, and adaptive fusion prediction, the spatiotemporal and real-time asynchrony issues of absolute time grating and incremental grating CNC systems were resolved, achieving high-precision motion control and stability, and meeting the needs of high-end CNC rotary tables.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUZHOU FURUTA AUTOMATION TECH
- Filing Date
- 2026-06-01
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, when absolute time gratings are directly applied to incremental grating CNC systems, there are problems of time-space asynchrony and real-time asynchrony, which leads to a mismatch between the spatial reference of position feedback and servo commands, and cannot meet the requirements of high-precision motion control.
The method employs spatiotemporal reference calibration, dual-clock synchronization alignment, adaptive fusion position prediction, and dual-loop closed-loop accuracy compensation. It achieves frequency and phase synchronization through hardware phase-locked loop, performs position prediction by combining an adaptive sliding window variable-order ARIMA-LSTM model, and achieves accuracy compensation through a dual-loop architecture.
It achieves seamless compatibility between absolute time grating and incremental grating CNC systems, improves the motion control accuracy and stability of CNC rotary tables, and meets the compensation accuracy of ±0.01 arcseconds and the data transmission time requirement of ≤0.02s.
Smart Images
Figure CN122411264A_ABST