钱振环,谢辉,佟强,等.基于模型的船用柴油机双泵协同共轨压力控制方法研究[J].内燃机工程,2021,42(3):100-108.
基于模型的船用柴油机双泵协同共轨压力控制方法研究
Research on Model-based Dual-Pump Cooperative Common Rail Pressure Control Method for Marine Diesel Engine
DOI：10.13949/j.cnki.nrjgc.2021.03.015
关键词:船用柴油机  共轨压力控制  基于模型的控制  主动抗扰控制  双泵协同
Key Words:marine diesel engine, common rail pressure control, Model-based control, Active disturbance rejection control, du-al-pump coordination
基金项目:国家重点研发计划， 提高中载及重载卡车能效关键技术中美联合研究，项目编号：2017YFE0102800
作者单位E-mail
钱振环 内燃机燃烧学国家重点实验室 qianzhenhuan@tju.edu.cn 
谢辉 内燃机燃烧学国家重点实验室  
佟强 内燃机燃烧学国家重点实验室  
陈韬* 内燃机燃烧学国家重点实验室 tao.chen@tju.edu.cn 
摘要点击次数: 2269
全文下载次数: 934
摘要:为降低具备双高压油泵的船用柴油机的共轨压力波动水平，提出了一种基于模型的双泵协同共轨压力控制方法。针对高压共轨系统的结构特点，建立了喷油量、供油量与共轨压力变化的简化模型；设计了以最小压力偏差为目标的双泵协同策略，确定工作油泵数量；设计了基于模型的主动抗扰控制算法，采用基于模型的前馈控制，反映燃油系统部件状态，采用主动抗扰方法抑制轨压波动, 利用即时观测器实时估计和补偿系统扰动。在船用柴油机仿真平台对控制方法进行验证，仿真结果表明，双泵协同策略利用了双油泵供油量大的优势，同时避免了供油量多时超调量过大的问题；与传统PID控制方法相比，基于模型的双泵协调轨压控制方法在阶跃测试时可将超调量降低77%以上；使用时间乘以误差绝对值积分指标评价控制效果，采用基于模型的双泵协同轨压控制方法的控制效果较传统方法可改善66%以上。
Abstract:In order to reduce the common rail pressure fluctuation of marine diesel engines with dual high-pressure oil pumps, a model-based dual-pump cooperative common rail pressure control method is proposed. In view of the structural characteristics of the high-pressure common rail system, a simplified model of fuel injection volume, fuel supply volume and common rail pressure change was estab-lished; a dual-pump coordination strategy aimed at minimum pressure deviation was designed to determine the number of fuel supply pumps; A model-based active disturbance rejection control algorithm is designed. Model-based feedforward control is used to reflect the status of fuel system components, active disturbance rejection control is used to suppress rail pressure fluctuations, and real-time observers are used to estimate and compensate system disturbances online. The control method is verified on the marine diesel engine simulation platform. The simulation results show that the dual-pump cooperative strategy takes advantage of the large fuel supply of the dual-fuel pump, and at the same time avoids the problem of excessive overshoot when the fuel supply is large. Compared with the traditional PID control method, the model-based dual-pump coordinated rail pressure control method can reduce the overshoot by more than 77% during the step test; using Integrated Time Absolute Error index to evaluate the control effect, the model-based dual-pump coordinated rail pressure control method can improve the control effect by more than 66% compared with the traditional method.
查看全文  HTML   查看/发表评论