基于线性主动抗扰的共轨柴油机轨压控制器设计及验证  

Design and Verification of a Linear Active Disturbance Rejection Control-Based Rail Pressure Controller for Common Rail Diesel Engines

作　　者：凌健[1] 谢辉[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《内燃机工程》2016年第6期50-57,共8页Chinese Internal Combustion Engine Engineering

基　　金：国家"八六三"高技术研究发展计划项目(2012AA111706)

摘　　要：提出了一种基于动态前馈、静态前馈和观测反馈的高压共轨柴油机轨压控制器。该轨压控制器采用了基于物理模型的轨压动态前馈控制、基于查表法的静态前馈控制及基于线性主动抗扰控制器的轨压观测反馈控制。利用ETAS公司ASCET软件实现了该轨压控制器,在与自主高压共轨柴油机控制器(ECU)进行集成后,开展了柴油机台架试验验证。试验结果表明:采用该轨压控制器,降低了轨压动态控制时的超调量,缩短了轨压稳定时间,提高了轨压控制精度和动态响应性能,轨压稳态偏差在±1.0MPa以内,轨压瞬态偏差在±2.0MPa以内。A rail pressure controller （RPC） for high pressure common rail （HPCR） diesel engines was proposed based on the dynamic feedforward, static feedforward and observation feedback. The dynamic feedforward control algorithm for the rail pressure based on the physical model, the static feedforward control algorithm for the rail pressure based on the look-up tables （Curves and Maps）, and the observation feedback control algorithm for the rail pressure based on the linear active disturbance rejection control （LADRC） were designed. The RPC was simulated by means of the ASCET software of ETAS GmbH and implemented using the self-developed electronic control unit （ECU） of HPCR diesel engines. Experimental verification of RPC was conducted on a HPCR diesel engine test bench. Results show that the RPC can control the rail pressure within ± 1.0 MPa under steady state conditions and within ± 2.0 MPa under transient conditions, thus decreasing the overshoot and settling time of the rail pressure, with high control accuracy and fast dynamic response.

关 键 词：内燃机 柴油机 高压共轨 轨压控制 基于模型控制 线性主动抗扰控制器 

分 类 号：TK421.4[动力工程及工程热物理—动力机械及工程]