What is the relationship between motion cycle jitter and EMC in a PAC (Power Controller Acoustic Control) system?

The motion cycle jitter of the intelligent controller PAC is closely related to EMC interference. Power supply noise, ground noise, and radiated interference can modulate the clock, causing cycle jitter. To reduce jitter, it is necessary to optimize power supply filtering (using PWRA6045 inductors and low ESR capacitors), enhance ground plane integrity, and shield the clock signal. At the same time, differential transmission is used for motion control signals to resist common-mode interference.

During testing, the standard deviation of the cycle jitter is measured, with a target of less than 0.1% of the cycle. When applying EFT 4kV interference, the increase in jitter should be less than 0.05%. Through EMC optimization, motion cycle jitter can be significantly reduced, control accuracy can be improved, and the IEC61800-3 standard can be met.