积分滑模-主动抗扰的复合轨压控制研究

熊嘉伟,贾瑞,宋国梁,单晓涵,付文杰

潍柴动力股份有限公司,山东 潍坊  261061

摘要：为解决高压共轨系统采用比例积分微分（proportional integral differential，PID）控制时出现的轨压控制不精确问题，分别采用模糊PID控制、积分滑模控制（integral sliding mode control，ISMC）、ISMC与主动抗扰控制（active disturbance rejection control，ADRC）复合控制策略，仿真分析高压共轨系统阶跃及自由加速工况下的轨压偏差。结果表明：对比PID控制，ISMC-ADRC复合控制策略、ISMC策略的超调量均减少77%，稳定时间均减少62%；对比ISMC，采用ISMC-ADRC复合控制策略系统抖振现象减弱，稳定时轨压偏差绝对值静态误差减少80%，且抗干扰能力明显提高。

关键词：高压共轨；滑模控制；主动抗扰；PID

Research of integrated sliding mode-active disturbance rejection composite rail pressure control

XIONG Jiawei, JIA Rui, SONG Guoliang, SHAN Xiaohan, FU Wenjie

Weichai Power Co., Ltd., Weifang  261061,China

Abstract：Aiming at the problem of inaccurate rail pressure control when the high-pressure common rail system adopts proportional integral differential (PID) control, fuzzy PID control, integral sliding mode control (ISMC), ISMC and active disturbance rejection control (ADRC) composite control are adopted respectively. The rail pressure deviations of the high-pressure common rail system under step and free acceleration conditions are simulated and analyzed. The results show that compared with PID control, the overshoot of ISMC-ADRC composite control strategy and ISMC strategy are reduced by 77% and the stabilization time are reduced by 62%; Compared with ISMC, the chattering phenomenon of the system using ISMC-ADRC composite control strategy is weakened, the static error of the absolute value of the rail pressure deviation is reduced by 80% when it is stable, and the anti-interference ability is significantly improved.

Keywords: high pressure common rail；sliding mode control；active disturbance rejection control；PID