电涡流测功机励磁电流模糊控制的研究  

Study on Fuzzy Control of Excitation Current in Eddy Current Dynamometer

作　　者：段敏[1] 石晶[1] 鲁晓丽[1] 张涛[1] 朱能革[1] 

机构地区：[1]辽宁工业大学汽车与交通工程学院,辽宁锦州121001

出　　处：《车用发动机》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)

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.

关 键 词：内燃机 试验台 测控系统 励磁电流 模糊控制 PID控制 

分 类 号：U467.5[机械工程—车辆工程]