介绍了车辆变速电控系统(electronic controller unit, ECU)和显示器之间的CAN(controller area network)总线通信系统;并就其软、硬件设计作了比较详细的分析;最后指出了它的应用前景.研究目的在于通过将CAN总线技术应用于实际的车辆...介绍了车辆变速电控系统(electronic controller unit, ECU)和显示器之间的CAN(controller area network)总线通信系统;并就其软、硬件设计作了比较详细的分析;最后指出了它的应用前景.研究目的在于通过将CAN总线技术应用于实际的车辆电控系统ECU与显示器之间的通信连接,探索CAN总线技术在军用车辆中应用的可行性及相比较1553B总线技术的优势.研究结果表明:虽然CAN和1553B都具有传输效率高、可靠性高、实时性好等特点,但由于CAN价格低廉,故CAN总线应用范围更广,更具竞争性.展开更多
Due to the coexistence and coupling of continuous variables and discrete events, the vehicle height adjustment process of electronic air suspension system can be regarded as a typical hybrid system. Therefore, the hyb...Due to the coexistence and coupling of continuous variables and discrete events, the vehicle height adjustment process of electronic air suspension system can be regarded as a typical hybrid system. Therefore, the hybrid system theory was applied to design a novel vehicle height control strategy in this paper. A nonlinear mechanism model of the vehicle height adjustment system was established based on vehicle system dynamics and thermodynamic theory for variable-mass gas charge/discharge system. In order to model both the continuous/discrete dynamics of vehicle height adjustment process and the on-off statuses switching of solenoid valves, the framework of mixed logical dynamical(MLD) modelling was used. On the basis of the vehicle height adjustment control strategy, the MLD model of the adjustment process was built by introducing auxiliary logical variables and auxiliary continuous variables. Then, the co-simulation of the nonlinear mechanism model and the MLD model was conducted based on the compiling of HYSDEL. The simulation and experimental results show that the proposed control strategy can not only adjust the vehicle height effectively, but also achieve the on-off statuses direct control of solenoid valves.展开更多
文摘介绍了车辆变速电控系统(electronic controller unit, ECU)和显示器之间的CAN(controller area network)总线通信系统;并就其软、硬件设计作了比较详细的分析;最后指出了它的应用前景.研究目的在于通过将CAN总线技术应用于实际的车辆电控系统ECU与显示器之间的通信连接,探索CAN总线技术在军用车辆中应用的可行性及相比较1553B总线技术的优势.研究结果表明:虽然CAN和1553B都具有传输效率高、可靠性高、实时性好等特点,但由于CAN价格低廉,故CAN总线应用范围更广,更具竞争性.
基金supported by the National Natural Science Foundation of China(Grant Nos.51375212 and 51105177)the Specialized Research Fund for the Doctoral Program of Higher Education of China(Grant No.20133227130001)the China Postdoctoral Science Foundation(Grant No.2014M551518)
文摘Due to the coexistence and coupling of continuous variables and discrete events, the vehicle height adjustment process of electronic air suspension system can be regarded as a typical hybrid system. Therefore, the hybrid system theory was applied to design a novel vehicle height control strategy in this paper. A nonlinear mechanism model of the vehicle height adjustment system was established based on vehicle system dynamics and thermodynamic theory for variable-mass gas charge/discharge system. In order to model both the continuous/discrete dynamics of vehicle height adjustment process and the on-off statuses switching of solenoid valves, the framework of mixed logical dynamical(MLD) modelling was used. On the basis of the vehicle height adjustment control strategy, the MLD model of the adjustment process was built by introducing auxiliary logical variables and auxiliary continuous variables. Then, the co-simulation of the nonlinear mechanism model and the MLD model was conducted based on the compiling of HYSDEL. The simulation and experimental results show that the proposed control strategy can not only adjust the vehicle height effectively, but also achieve the on-off statuses direct control of solenoid valves.
