摘要
轨压跟踪控制一直以来都是高压共轨系统控制方法设计的难点,而传统滑模控制由于其本质是不连续开关控制,系统在平衡点会发生抖振,同时传统轨压控制方法没有考虑和处理由于喷油器喷油引起的时变扰动.为了解决系统抖振问题,在基于流体动力学原理建立的高压共轨系统非线性数学模型的基础上,提出了新型的变指数滑模控制方法;为处理喷油器喷油对系统的干扰,设计了广义比例积分观测器(GPIO)用于估计喷油扰动,并提出了基于广义比例积分观测器的变指数滑模控制方法.在Matlab/Simulink和AMESim中进行联合仿真试验,结果表明:引入变指数滑模控制方法后趋近速率提高约18.2%,抖振减小约40.8%,同时在增加GPIO后,趋近速率进一步提高约22.2%,抖振减小约39.2%.
Due to the design difficulty of the rail pressure tracking control for high pressure common rail(HPCR)system,there is a shiver still in the equilibrium point of the system with the traditional sliding mode control res-ulted from its nature of discontinuous switching control and the method without consideration for the time-vary-ing disturbance by fuel injection.To solve the system chattering problem,a new variable exponential sliding mode control(VESMC)method was proposed for HPCR system based on a nonlinear mathematical model estab-lished with the principle of fluid dynamics.A generalized proportional integral observer(GPIO)was designed to estimate the injection disturbance,and a VESMC method was proposed adapted to the GPIO.The results of sim-ulation experiment associated with the software Matlab/Simulink and AMESim show that the VESMC method can increase the convergence rate by about 18.2%and reduce the chattering by about 40.8%.At the same time,after adding GPIO,the convergence rate can further increase up to 22.2%and the chattering can decrease to 39.2%.
作者
张付军
张宸瀚
胡博睿
赵锐娜
崔涛
ZHANG Fujun;ZHANG Chenhan;HU Borui;ZHAO Ruina;CUI Tao(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Beijing North Vehicle Group Corporation,Beijing 100072,China)
出处
《北京理工大学学报》
北大核心
2025年第8期866-876,共11页
Transactions of Beijing Institute of Technology
关键词
高压共轨
滑模控制
广义比例积分观测器(GPIO)
轨压控制
AMESIM
high pressure common rail(HPCR)
sliding mode control
generalized proportional integral observ-er(GPIO)
rail pressure control
AMESim
