变系数PID控制在发动机试验中的应用

开发了一种用于数字化发动机试验控制系统中调谐系数可调的PID控制方法。根据这一方法,对水力测功器的非线性扭矩控制,可以通过PID输出调节量的相应修正,使发动机在高低不同工况下均获得平稳的调控。该方法与虚拟仪表技术结合在一起,构成了一个高效率的发动机测控系统。

Application of PID Control With Variable Parameters in Engine Test

A PID control method with variable tuning parameters in the digitized engine test systems is presented. The PIDcontrol output can be well modified for the non-linear torque control by dynamometers in this way. A stable control processis then achieved for different engine loads in the test. This method, when combined with the virtual instrumentation technology,forms a highly efficient system of engine measurement and control.