Redundant design of A CAN BUS Testing and Communication System for space robot arm

This paper analyzes and designs a Testing and Communication System (TCS), which is used for the simulation of controlling and communicating for the space robot arm. Arming at enhancing the reliability of the operation of the space robot arm, a new Hot Double redundant strategy is adopted during the designing of TCS. The new Hot Double Redundant way is utilized to back up CAN BUS, which is the medium of data transmission and reception. The new network structure based on CAN BUS is validated on a nine nodes experiment system. The simulation results demonstrate the effectiveness of the redundancy strategy, and also the reliability and fault-tolerant ability of the TCS is testified by experiments.