摘要
基于串级控制设计了轨压-电流双闭环控制器,采用非线性跟踪微分器改进了传统的PID控制算法并用于轨压的反馈控制;研究了试验中的轨压剧烈波动现象和轨压剧烈波动机理,提出了变频控制避免轨压剧烈波动的方法,给出了驱动频率的计算方法。油泵试验台进行的试验表明:所提出轨压控制算法能使轨压在稳态工况下波动控制在±1MPa以内,瞬态无超调;变频控制可以避免共轨系统轨内发生波的干涉。
A rail pressure-current double closed-loop controller was deigned based on cascade control, conventional PID rail pressure control algorithm was improved by adopting nonlinear tracking differentiator and used for feedback control, and the rail pressure fluctuation Dhenomennnmechanism were studied to find the resolving measures,and the calculation step of driving frequency was put forward. The injection pump bench test results show that the rail pressure fluctuates within MPa in steady conditions, there is no overshoot in transient conditions by using the control algorithm, and the variable frequency control is an effective means to avoid in-rail wave interference.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2014年第1期75-80,共6页
Chinese Internal Combustion Engine Engineering
基金
国家自然科学基金资助项目(51179102)
关键词
内燃机
蓄压分配共轨系统
非线性跟踪微分器
波的干涉
变频控制
IC engine
accumulator distributor fuel injection system
the nonlinear tracking differentiator
wave interference
variable frequency control
