The Problem
High-resolution X-ray microscopy depends on motion systems whose commanded axes do not always map perfectly to physical motion. Mechanical misalignment, calibration error, and coupled stage geometry can translate a nominally simple move into unwanted displacement elsewhere in the sample coordinate system.
Hybrid Correction
I led development of controls-layer mitigation with two complementary modes. A manual cubic-spline workflow mapped measured error profiles into corrected commands, giving engineers a transparent method for compensating known behavior. An automated geometric-transform engine applied real-time coordinate transformations across the motion range.
The software exposed corrected virtual axes while retaining underlying motor coordinates and calibration state. Multiple correction modes allowed the appropriate approach to be selected based on calibration confidence and operating context.
Digital-Twin Pathway
The virtual-coordinate and correction layers constitute a model-based controls foundation rather than a complete live digital twin. Synchronizing the kinematic model with telemetry, uncertainty estimates, calibration history, and command replay would extend it into an operational twin for what-if analysis and safer validation before hardware motion.
ENGINEERING INSIGHT
Model-based correction earns operator trust when the raw state, corrected state, calibration inputs, and active correction mode remain visible.