A novel scheduling method of bandwidth optimization of the CAN network

Abstract

In this paper we present a bandwidth optimization scheduling method based on CAN (Controller Area Network) network. We construct a CAN network structure that contains a BOM (Bandwidth Optimize Manager), which is used to limit the bandwidth occupancy rate of part of control sub-systems, and implement dynamically allocation for network bandwidth resources in the CAN control system. By comparing the value of the weighted summation between the control performance and network transmission performance, BOM selects part of control sub-systems with better overall performance, and pre-estimates the amount of bandwidth allocation of meeting the lowest bound of system's real-time transmission by autoregressive model. Simulation results show that our method can effectively allocate the bandwidth and reduce bandwidth demand, and greatly improve the overall performance of the CAN system.