In industrial Ethernet,devices have higher and higher requirements for clock synchronization ac-curacy.Based on the theory of IEEE1588 protocol,a clock synchronization algorithm based on unscented Kalman filter is designed.By observing the time difference obtained by PTP,the algorithm obtains the es-timated value of clock deviation and clock frequency of the next cycle,and uses the estimated value to cor-rect the slave clock frequency and clock deviation to ensure clock synchronization.Finally,experiments show that this method can effectively improve the accuracy of clock synchronization.
维普
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