机器人焊接轨迹的在线视觉监控及补偿系统
By combining a laser welding head with a coaxial vision sensor, and utilizing an excitation module, a perception dimension reduction module, a dual-channel phase-locked demodulation module, and a normalization compensation control module, real-time and reliable compensation for workpiece tolerances, assembly errors, and trajectory deviations caused by dynamic thermal deformation is achieved. This solves the problem of high cost dependence in existing technologies and improves welding quality and system stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 南通炎辰金属制品有限公司
- Filing Date
- 2025-11-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies rely on high-cost pre-precision calibration when dealing with workpiece tolerances, assembly errors, and trajectory deviations caused by dynamic thermal deformation, and are difficult to perform real-time reliable compensation under strong interference conditions.
By employing a laser welding head combined with a scanning galvanometer and a coaxial vision sensor, periodic oscillation modulation is applied through an excitation module, a one-dimensional time-varying intensity signal is acquired by a perception and dimensionality reduction module, a dual-channel phase-locked demodulation module demodulates the fundamental frequency and second harmonic components, and a normalization compensation control module calculates the trajectory deviation and generates a compensation signal to achieve real-time trajectory compensation.
Stable real-time compensation for trajectory deviation was achieved under strong interference conditions, reducing dependence on high-cost pre-tooling and high-precision incoming materials, and improving welding quality and system robustness.
Smart Images
Figure CN121267378B_ABST