摘要
为了提高汽车发动机电子节气门控制系统的动态响应特性,进一步探索改善发动机过渡工况排放性能的控制策略。首先根据电子节气门非线性机电系统建立了对应的数学模型,以便于对电子节气门控制系统进行研究。随后基于智能控制算法具有抗干扰能力强、鲁棒性强和适用于非线性控制系统等优点,而且免疫反馈控制算法也具有在控制系统中响应迅速的特点,将模糊控制算法和免疫反馈控制算法应用于电子节气门系统的运动控制,探讨电子节气门系统的非线性对控制效果的影响。基于经典控制算法PID对系统的控制精度和响应的调节、模糊控制算法对非线性系统的响应性的适应性以及免疫反馈算法对提高控制系统的响应速度有效性的品质,设计了用于提高电子节气门系统响应特性的模糊免疫PID控制器,进一步进行电子节气门响应特性研究。试验结果表明,与PID和模糊PID控制的系统响应特性比较,模糊免疫PID控制系统的响应速度和调整速度等动态特性指标具有明显优势,有利于电子节气门的响应特性的提高,对于提高汽车的动力性、经济性以及排放性都有重要的意义。
In order to improve the dynamic response characteristics of electronic throttle control system of automobile engine, the control strategy for improving the emission performance of engine transition condition is further explored. First, based on the nonlinear electromechanical system of electronic throttle, the corresponding mathematical model is established to study the control system of electronic throttle. Then, based on the advantages of strong anti-disturbance ability, strong robustness and applicability to nonlinear control system of intelligent control algorithm, and the immune feedback control algorithm has the characteristics of rapid response in control system, so fuzzy control algorithm and immune feedback control algorithm are applied to the motion control of electronic throttle system. The influence of the nonlinearity of the electronic throttle system on the control effect is discussed. Based on the adjustment of classical control algorithm PID to control precision and response of the system, the adaptability of fuzzy control algorithm to the response of nonlinear system, and the characteristics of the effectiveness of immune feedback algorithm to improve the response speed of the control system, the fuzzy immune PID controller for improving the response performance of the electronic throttle system is designed to further research the response characteristics of electronic throttle. The experimental result shows that compared with the system response characteristics of PID and Fuzzy PID control, the dynamic characteristic indicators of the fuzzy immune PID control system, such as response speed and adjusting speed, have obvious advantages. The control system is conducive to improve the response characteristics of electronic throttle, and has important significance for improving the power, the economy and the emissions of vehicles.
作者
孙建民
郑朋涛
SUN Jian-min;ZHENG Peng-tao(School of Mechanical-Electronic and Vehicle Engineering,Beijing University of Civil Engineering and Architecture,100044,Beijing;Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles,100044,Beijing)
出处
《公路交通科技》
CAS
CSCD
北大核心
2019年第7期143-149,共7页
Journal of Highway and Transportation Research and Development
基金
促进高校内涵发展定额项目-建大英才(21082718034)
关键词
汽车工程
反馈控制策略
免疫反馈控制
电子节气门控制
非线性系统
automobile engineering
strategy of feedback control
immune feedback control
electronic throttle control system
nonlinear system
