针对存在输入时滞的多智能体系统(multi-agent system,MAS)滞后一致性问题,提出一种基于时基生成器(time base generator,TBG)的二阶MAS预设时间领导跟随滞后一致性控制方法,使得稳定时间与系统初始状态无关且可预先设定。首先,提出一...针对存在输入时滞的多智能体系统(multi-agent system,MAS)滞后一致性问题,提出一种基于时基生成器(time base generator,TBG)的二阶MAS预设时间领导跟随滞后一致性控制方法,使得稳定时间与系统初始状态无关且可预先设定。首先,提出一种误差变换方法,将具有时滞的误差系统转换为无时滞误差系统。然后,利用TBG函数构造误差辅助变量并构造相应滑模面,进而设计预设时间控制器。同时,证明所设计控制器的预设时间稳定性。最后,通过数值仿真验证所提方法的可行性及有效性。仿真结果表明,MAS能够实现精确的预设时间滞后一致性。展开更多
Lookup table is widely used in automotive industry for the design of engine control units(ECU).Together with a proportional-integral controller,a feed-forward and feedback control scheme is often adopted for automotiv...Lookup table is widely used in automotive industry for the design of engine control units(ECU).Together with a proportional-integral controller,a feed-forward and feedback control scheme is often adopted for automotive engine management system(EMS).Usually,an ECU has a structure of multi-input and single-output(MISO).Therefore,if there are multiple objectives proposed in EMS,there would be corresponding numbers of ECUs that need to be designed.In this situation,huge efforts and time were spent on calibration.In this work,a multi-input and multi-out(MIMO) approach based on model predictive control(MPC) was presented for the automatic cruise system of automotive engine.The results show that the tracking of engine speed command and the regulation of air/fuel ratio(AFR) can be achieved simultaneously under the new scheme.The mean absolute error(MAE) for engine speed control is 0.037,and the MAE for air fuel ratio is 0.069.展开更多
文摘针对存在输入时滞的多智能体系统(multi-agent system,MAS)滞后一致性问题,提出一种基于时基生成器(time base generator,TBG)的二阶MAS预设时间领导跟随滞后一致性控制方法,使得稳定时间与系统初始状态无关且可预先设定。首先,提出一种误差变换方法,将具有时滞的误差系统转换为无时滞误差系统。然后,利用TBG函数构造误差辅助变量并构造相应滑模面,进而设计预设时间控制器。同时,证明所设计控制器的预设时间稳定性。最后,通过数值仿真验证所提方法的可行性及有效性。仿真结果表明,MAS能够实现精确的预设时间滞后一致性。
基金Project supported by the Centre for Smart Grid and Information Convergence(CeSGIC)at Xi’an Jiaotong-Liverpool University,China
文摘Lookup table is widely used in automotive industry for the design of engine control units(ECU).Together with a proportional-integral controller,a feed-forward and feedback control scheme is often adopted for automotive engine management system(EMS).Usually,an ECU has a structure of multi-input and single-output(MISO).Therefore,if there are multiple objectives proposed in EMS,there would be corresponding numbers of ECUs that need to be designed.In this situation,huge efforts and time were spent on calibration.In this work,a multi-input and multi-out(MIMO) approach based on model predictive control(MPC) was presented for the automatic cruise system of automotive engine.The results show that the tracking of engine speed command and the regulation of air/fuel ratio(AFR) can be achieved simultaneously under the new scheme.The mean absolute error(MAE) for engine speed control is 0.037,and the MAE for air fuel ratio is 0.069.
