摘要
发动机-测功机系统具有非线性、强耦合等特点,无法建立精确的数学模型,将模糊控制和PID控制结合起来运用于发动机-测功机的测控系统中,建立了发动机-测功机传动系统动力学模型、测功机加载励磁电流模型,对发动机的转矩、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,较好地解决了试验台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-eddy current dynamometer has nonlinear, strong couple and other characters in engine test bed. Combining fuzzy with PID was used in the measuring and controlling system of the engine-eddy current dynamometer. The dynamics model of the engine-dynamometer,excitation current of the dynamometer are set up to control torque and speed of the engine. The results indicated that the stability of the test-bed and the metrical problem of real time veracity are solved preferably, the precision of 4% at stable control.
出处
《拖拉机与农用运输车》
北大核心
2008年第3期44-46,共3页
Tractor & Farm Transporter
基金
辽宁省教育厅基金资助项目(29101299)
关键词
发动机
测功机
励磁电流
模糊-PID控制
Engine
Eddy current dynamometer
Excitation current
Fuzzy-PID control
