摘要
进行了高压共轨ECU监控单元硬件电路和监控策略的设计与开发,提出了三层监控架构并对其中的问询/应答通信监控策略进行开发。利用Matlab/Simulink工具对监控策略进行模型搭建与仿真,利用Real-Time Workshop工具实现模型到代码的自动生成,运用满足ISO 26262标准的工具链和开发流程对代码进行优化,最后在高压共轨柴油机上进行试验验证。试验结果证明此监控单元能有效检测主CPU故障并及时作出响应,极大提高了高压共轨系统的稳定性。
The hardware circuits and monitoring strategies of the monitoring unit for high pressure common rail ECU were designed and developed,which mainly focused on query and response monitoring strategy of the three-level monitoring architecture.The model of monitoring strategy was built and simulated by using Matlab/Simulink tool,the codes were generated automatically by using Real-Time Workshop tool,the generated codes were optimized by using the tool chain and development process according to ISO 26262,and finally the test verification was conducted on a high pressure common rail diesel engine.The results showed that the monitoring unit could effectively inspect the fault of CPU and make the decision in time.Accordingly,the stability of high pressure common rail system improved greatly.
出处
《车用发动机》
北大核心
2016年第1期17-21,共5页
Vehicle Engine
关键词
高压共轨
电控单元
自动代码生成
监控单元
控制策略
high pressure common rail
ECU
auto-code generation
monitoring unit
control strategy
