The technology of RT cluster management is describeda function of Bus Controller (BC) oriented to the addressing of 128 terminals is realizedand the innovation of the technology is introduced.Based on the RT cluster management technologya time-triggered dynamic network scheduling mechanism is proposed which ensures the certainty of communication delay and time offsetand realizes bus data transmission with high reliability and certainty.By setting up the system test environmenttwo key technologiesRT cluster management and dynamic network scheduling mechanismare tested and verified.The system operates stablyand its function and performance are consistent with theoretical analysis.