Adaptive Thermal Model for Structure Model Based Correction

Abstract This paper discusses structure model based correction of thermal induced errors at machine tools. Using a evaluated in real-time, the tool center point (TCP) are calculated on information gotten from control (e.g., axes velocities, positions, and motor currents) ambient temperature. The describes physical relationships considers structural variability resulting traverse movements feed – so-called model. To create this, finite elements used as thermo-elastic models, order reduction (MOR) techniques to enable calculation high-resolution models real-time. Subsequent parameter updates can improve accuracy initial set models. A systematic procedure developed for this purpose its application demonstrator presented. For update, parameters selected which change over operating time, e.g., due wear. Temperature sensor positions chosen, sensitive changes these parameters. Simulations with varied plausible range determine whether optimizations reasonable. optimization runs trusted execution environment (TEE) server parallel control. confidential input data itself have be protected unauthorized access. efficient secure leads an adaptive (digital twin).