基于CompactRIO的内燃兰金循环发动机节气门闭环控制研究  

Research of the Closed-Loop Control System for Electronic Throttle of ICRC Engine Based on CompactRIO Platform

作　　者：王晏妮 李理光[1] 康哲[1] 胡宗杰[1] Wang Yanni;Li Liguang;Kang Zhe;Hu Zongjie(School of Automotive Studies, Tongji University ,Shanghai, 200092, China)

机构地区：[1]同济大学汽车学院,上海200092

出　　处：《小型内燃机与车辆技术》2019年第2期20-26,共7页Small Internal Combustion Engine and Vehicle Technique

基　　金：国家自然科学基金项目(91441125)

摘　　要：采用均质压燃技术的内燃兰金循环发动机具有高热效率以及优良的排放性能,是未来发动机的重点研究方向之一。其工作负荷和缸内燃烧的程度与进气量以及进气中氧气的浓度息息相关,进气流量、进气压力、进气中氧浓度的稳定性对于发动机运行时的边界条件控制非常重要。基于CompactRIO平台,建立了电子节气门的控制模型,利用LabVIEW开发出3种控制算法:插值算法、PID算法和分段PID算法。仿真结果表明,在3种控制算法中,分段PID算法上升时间最短,超调量小,无稳态误差,能使节气门迅速达到目标开度并保持稳定开度,抖动小,对于内燃兰金循环发动机均质压燃过程稳定地进行具有重要意义。ICRC engine with HCCI has a higher thermal efficiency, better emission compared with the traditional ICE. During the combustion process, ICRC engine uses oxygen instead of air as oxidant, as a result, its load and combustion intensity are closely related to the quantity of the intake oxygen condition.Therefore, the control of the intake air’s quantity, pressure and concentration of the oxygen is very important for boundary condition to get stabilized during the operation of the system. This paper adopts CompactRIO platform to build the control model of electronic throttle and develop three algorithms: Interpolation algorithm, PID algorithm and sectioned integral partitioning PID algorithm. The results show that the sectioned PID algorithm has the shortest rise time, the smallest overshoot and little steady-state error. It can control the throttle quickly and stably to reach the target opening angle with low jitter, which is significant for better combustion stability of ICRC engine operated with HCCI.

关 键 词：CompactRIO平台 插值算法 PID算法 分段PID算法 

分 类 号：TK411.2[动力工程及工程热物理—动力机械及工程]