摘要
发动机试验台具有多变量、时变、非线性、强耦合等特点,将模糊控制和PID控制结合起来运用于发动机试验台电涡流测功机励磁电流控制中,建立了测功机励磁电流模型,确定了模糊控制规则,对发动机的扭矩、转速进行了控制试验研究,结果表明控制精度高、动态响应快、超调量低,较好地解决了电涡流测功机控制的稳定性及测量的实时准确性问题,控制精度为4%。
The engine test bed was multivariate, time-varying, nonlinear and strong-coupling. The excitation current model of dynamometer was built by applying fuzzy control and PID control to excitation current control of eddy current dynamometer in the engine test bed, the fuzzy control rules were also ascertained and the control test of speed and torque was carried out with fuzzy control rules in the end. The results indicated that the fuzzy control method has high control precision, rapid dynamic response and low overshoot and can solve the problem of control stability and real-time accurate measurement for eddy current dynamometer. It is also found that the control precision may reach 4 per cent.
出处
《车用发动机》
北大核心
2007年第4期59-63,共5页
Vehicle Engine
基金
辽宁省教育厅基金资助项目(29101299)
关键词
内燃机
试验台
测控系统
励磁电流
模糊控制
PID控制
ICE
test bed
measurement and control system
excitation current
fuzzy control
PID control
