| 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. |
| 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 |
| Key Words:marine diesel engine, common rail pressure control, Model-based control, Active disturbance rejection control, du-al-pump coordination |
|
| 摘要点击次数: 3203 |
| 全文下载次数: 1269 |
| 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 查看/发表评论 下载PDF阅读器 |
|
|
|