基于CAN总线的汽车电子节气门控制系统的应用与研究

发布时间：2018-07-14 17:29

【摘要】：近些年来,一方面,随着人们对汽车的安全性、舒适性及燃油经济性越来越高的需求,传统机械式节气门已经不能满足;另一方面,随着科技的发展,尤其是智能控制技术的发展,给节气门的控制技术带来了新的发展机遇与挑战。电子节气门的控制需求是根据加速踏板给出发动机的动力需求后发动机控制器综合其他车载设备对动力的需求后给节气门发出开度信号从而达到最佳的进气控制。本文在着重剖析了节气门复位弹簧、摩擦力、进气气流等非线性因素影响的基础上,建立了以节气门总成为被控对象的数学模型,包括直流电机、传感器及节气门执行机构等;设计了积分分离PID控制器和PID型云模型控制器,并且在Matlab/Simulink上进行了控制器算法的仿真研究,结果表明PID型云模型控制器在超调、响应时间优于积分分离PID控制器并且具有更好稳定性和鲁棒性。在Matlab/Simulink仿真研究的基础上,设计了基于Mc9S12G128芯片的电子节气门控制器,并且在此硬件基础上,实现了积分分离PID控制算法和PID型云模型控制算法,完成了节气门系统的软件开发,结果表明本文设计的控制器算法可以达到预期的控制效果,进一步验证了节气门控制策略的快速性、有效性和稳定性。
[Abstract]:In recent years, on the one hand, with the increasing demand for safety, comfort and fuel economy of cars, the traditional mechanical throttle has been unable to meet; on the other hand, with the development of science and technology, Especially the development of intelligent control technology brings new opportunities and challenges to throttle control technology. The control requirement of electronic throttle is to give the engine power demand according to the accelerator pedal the engine controller synthesizes the power demand of other vehicle equipment and sends the opening signal to the throttle so as to achieve the best intake control. On the basis of analyzing the influence of throttle reset spring, friction force, intake air flow and other nonlinear factors, the mathematical model of throttle is established in this paper, including DC motor, sensor and throttle actuator. The integral separation pid controller and pid cloud model controller are designed and simulated on Matlab / Simulink. The results show that the pid cloud model controller is overshooting. The response time is better than the integral separation pid controller and has better stability and robustness. On the basis of Matlab / Simulink simulation, the electronic throttle controller based on Mc9S12G128 chip is designed. On the basis of this hardware, the integral separation pid control algorithm and pid cloud model control algorithm are realized, and the software development of throttle system is completed. The results show that the controller algorithm designed in this paper can achieve the desired control effect, and further verify the speed, effectiveness and stability of the throttle control strategy.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U464.134.4;TP273

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