Implementation of LDUT-based redundancy and frame structure management in CAN bus space applications

This paper discusses how to implement the CAN bus protocol based on the ECSS standard in the space applications of satellites and various missions. The CAN protocol frame consists of the frameworks, arbitration and control, data, cyclic redundancy, and verification sections. The arbitration and control section are responsible for controlling the data flow. There are two standards for these two parts, which satellites usually use the developed CAN standard according to which the LDUT protocol is designed, due to the need to use the LDUT protocol for big data transmission. Also, to manage the redundancy of the CAN bus, the implementation conditions of the parameters of each node will be checked. Also, this protocol is implemented on the reaction wheel condition with microcontroller hardware and related converter considerations in MPLAB software environment and is approved by Microchip Analyzer CAN separately and OBC simulator as a quadruple group with the correct function of the approved bus redundancy.