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Self-Calibrating Multi-Sensor Ovality Measurement Method

[Category : - MECHANICAL ENGINEERING]
[Viewed 16 times]

The invention introduces a real-time method and device for measuring ovality and other shape deviations of rotating parts using at least three distance sensors.rnUnlike traditional multiprobe and error-separation methods, this system performs full automatic calibration of all measurement channels directly from a single revolution. Sensor gain, offset and angular errors are estimated on-line, eliminating the need for a precision reference spindle or calibration artefact.rnrnSynchronized sensor signals are processed by a computation unit that reconstructs the surface profile and determines ovality and roundness metrics. A robust optimization procedure separates true geometric shape from sensor imperfections, encoder errors, tilt and synchronous motion error.rnrnThe method supports optical, inductive, capacitive and contact sensors, as well as synthetic channels derived from camera-based depth measurement. Optional 3D configurations improve separation of axial runout and tilt.rnThe system enables high-accuracy ovality and roundness measurement even with lower mechanical precision and is ideal for automotive, aerospace and general precision manufacturing.

Patent application filed on 25.09.2025. Full text available upon request.

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frybert (Czech Republic)

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