China Jiliang University

Haochun Wang

Tao Zheng

Binrui Wang

Yinglian Jin

Kun Zhou

Wei Song

Xianlei Chen

Shanqiang Wu

A synchronization optimization method for EtherCAT master slaves is provided. By capturing a time when a master sends a data frame, a time when receives, and a time when a reference slave receives the data frame, a transmission delay is calculated. A compensated transmission delay is obtained. A time taken for a data frame to leave a parent port and return to the same parent port, a transmission delay, a clock offset, and a clock drift are calculated. The clock drift is compensated. A new clock offset is obtained by subtracting the compensated clock drift from the clock offset and written into the non-reference slave for compensation to complete a synchronization optimization. The present application reduces the clock drift and enables the master to compensate for the clock drift of each slave more rapidly.

Synchronization optimization method for EtherCAT master slaves

Growing community of inventors

Zhejiang, China

Haochun Wang