摘要
为解决天然气发动机氧闭环系统中存在的时滞问题,提出基于内模控制(internal model control,IMC)原理的氧闭环控制策略,基于系统的鲁棒性对控制参数进行整定。建立基于传递函数的发动机物理模型并进行标定与验证,对控制策略进行GT-Power与Simulink联合仿真验证、台架试验验证。仿真及试验结果表明:基于IMC的氧闭环控制策略能有效解决时滞导致的控制难题,且标定周期短、控制器的鲁棒性强,在数据失配20%时依然能够达到良好的控制效果。
In order to solve time delay problem of oxygen control for heavy duty nature gas engine,a oxygen control strategy based on internal model control(IMC)is developed and calibrated by parameters in consideration of control robustness,and the engine model based on transfer function is also built.The IMC control strategy model is simulated by using Simulink coupled with GT-Power,and validated by experiments in test bench.Simulation and experiments indicate that IMC based oxygen closed-loop control strategy is effectively for the control problem caused by time delay,and work for calibration is reduced.The system is more robust,even if 20%deviation occurs in the model,the system performances are quite well.
作者
卫阳飞
徐帅卿
郑群
赵晓
WEI Yangfei;XU Shuaiqing;ZHENG Qun;ZHAO Xiao(State Key Laboratory of Engine Reliability, Weifang 261061,China;R&D Center, Weichai Power Co. , Ltd. , Weifang 261061,China)
出处
《内燃机与动力装置》
2021年第4期36-41,46,共7页
Internal Combustion Engine & Powerplant
基金
国家重点研发计划课题(2017YFC0211305)。
作者简介
第一作者:卫阳飞(1995—),男,山西临汾人,助理工程师,主要研究方向为内燃机控制与标定,E-mail:weiyangf@weichai.com。
