Abstract
Aiming at the technical problem for large-span two-dimensional linkage measurement of locomotive wheelset, which is a displacement compensation optimal algorithm for dynamic programming is proposed. The system uses a specially designed high-precision, high-stability marble structure. High-precision measurement system is calculated by laser interferometer. By using the displacement accuracy optimal compensation algorithm of dynamic programming, the dynamic real-time accuracy compensation of the device is carried out. Experimental verification shows that, after using the dynamic compensation, the X-axis positioning accuracy achieves to 7.9 μm, the Z-axis positioning accuracy achieves to 6.6 μm, and the X-axis horizontal straightness achieve to 4.5 μm.
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