CAN 기반 제어시스템의 시간해석을 위한 모니터링 툴 개발

This paper presents a monitoring tool using an interface unit on the CAN(Controller Area Network) bus for the network-based control system in which a number of ECUs are connected. When many unprecedented nodes try to access the network for a specific time interval, the networked system may be operated unstably. A simple methodology for varying sampling period, which is determined by holistic scheduling method, is proposed and utilized to resolve transmission delay of lower priority data caused by higher priority data in a CAN-based network system. In order to show the validity of suggested method, it is applied to a simple type of a simulator for a fuel cell hybrid electric vehicle which consists of several DSP chips in which subsystems of a vehicle and the power control algorithm are coded.