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对利用d SPACE仿真器进行CAN总线实时通讯时所面临的问题进行了分析,提出了解决该问题的思路和方法。使用中断和使能两种触发方式,设计了基于d SPACE的CAN通讯接口模型。构建了卫星分系统仿真模型,按照星上CAN总线通讯协议,进行了实时仿真,实现了在分系统仿真模型与星务分系统之间进行大数据量通讯。仿真结果证明了本文设计的CAN通讯方法的有效性。
This paper analyzes the problems faced in real-time communication of CAN bus using d SPACE simulator, and puts forward the ideas and methods to solve this problem. Using interrupt and enable two kinds of triggering methods, design a dSPACE-based CAN communication interface model. The simulation model of satellite subsystem is established. Real-time simulation is carried out according to the on-board CAN bus communication protocol. Large amount of data communication between subsystem simulation model and satellite subsystem is realized. The simulation results prove the effectiveness of the CAN communication method designed in this paper.