基于降维观测器的氨覆盖率自抗扰反馈控制器设计  

Design of an ADRC Feedback Controller for Ammonia Coverage Ratio based on a Reduced-Order Observer

作　　者：赵靖华[1,2] 胡云峰[2] 谭振江[1] 高炳钊[2] 

机构地区：[1]吉林师范大学,四平136000 [2]吉林大学汽车仿真与控制国家重点实验室,长春130025

出　　处：《汽车技术》2016年第5期37-41,62,共6页Automobile Technology

基　　金：国家自然科学基金重点项目(61034001);吉林省科技发展计划(20130101179JC-16)

摘　　要：针对尿素选择性催化还原系统(Urea-SCR系统)参数估计以及排放优化控制问题,设计了一款基于降维观测器的氨覆盖率自抗扰(ADRC)反馈控制器。借助en DYNA精确发动机模型软件中FTP75测试循环,进行瞬态测试仿真验证。结果表明,所设计的降维观测器能够满足估计误差要求;与调试好的PID控制器相比,所提出的氨覆盖率ADRC反馈控制器具有更好的排放控制效果和鲁棒性能。For parameter estimation and emission optimal control of urea selective catalytic reduction（SCR） system,an active disturbance rejection control（ADRC） feedback controller for ammonia coverage ratio is designed based on a reduced-order observer. A transient simulation is conducted to verify the effectiveness of the proposed control strategy with FTP75 test cycle of en DYNA engine modeling software. The results indicate that the designed reduced-order observer can meet the requirements of the estimation error. Compared with the tuned PID method, the proposed ammonia coverage ratio ADRC feedback controller has better emission control effect and robustness.

关 键 词：UREA-SCR系统 降维观测器 氨覆盖率 自抗扰技术 

分 类 号：U464.12[机械工程—车辆工程]