How stable is the EMC of the high-speed interpolation PAC intelligent controller?

Ensuring the EMC stability of high-speed interpolation in a PAC (Power Controller for Interpolation) requires addressing clock, power supply, and signal integrity.

This involves using a low-phase-noise clock with shielded and terminated clock lines; providing independent power to interpolation algorithm-related circuits (such as the FPGA) using a ferrite bead (PBZ1608A-102Z0T) and decoupling capacitors; employing a differential bus (such as LVDS) for signal transmission with a common-mode inductor (CMZ20212A-900T); keeping high-speed signals away from noise sources on the PCB; and using an error compensation algorithm in the software.

During testing, the interpolation trajectory error should be less than 0.01mm under interference (such as EFT 4kV). Through this design, high-speed interpolation remains stable in harsh EMC environments, meeting the IEC61000-4-4 test requirements.