摘要
采用对角矩阵法开展对柴油机VNT-EGR空气系统的解耦控制研究,并利用P规范形式描述耦合控制对象及解耦环节。经过适当简化后,设计出基于PID控制器的易于实现及标定的解耦控制算法。研究结果表明:与传统独立闭环控制算法相比,在瞬态控制过程中,解耦控制算法可更快地追踪控制目标,并可抑制调节过程中的非最小相位特性。
Transient control performance of the independent close-loop control algorithm applied in diesel engine VNT-EGR air system was not so satisfactory because of the air system coupling characteristics, so decoupling control algorithm of VNT-EGR air system based on diagonal matrix method was developed, and the coupling control objective and the decoupling link were expressed in P canonical forms. After reasonable simplification, a decoupling control algorithm adopting PID control method, very easy to implement and calibration was achieved. Experiment results show that in transient conditions, this decoupling control algorithm can trace control targets faster and avoid non-minimum phase characteristics compared with traditional independent close-loop control algorithm.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2013年第6期1-4,共4页
Chinese Internal Combustion Engine Engineering
基金
国家自然科学基金项目(51106086)
