Abstract��Concerning the bad control effect for fatigue testing machine caused by variations of system parameters such as sample rigidity, oil temperature, interior leakage and so on, a method that can optimize the controller parameters on��line is brought forward. Based on the process parameters on��line identified by monitor computer, the PID parameters are optimized using the method of minimizing the objective function known as ITAE, thus the controller parameters suited for the current operating mode are obtained. This process is run at intervals of ten minutes automatically in monitor computer, and then the optimized PID parameters are transferred to controller through bus for real time control. Compared with the traditional method of tuning PID parameters according to experience, this method is simpler and improves the frequency response of the system.
�Ÿ���;������;�ŵ;���. ��Һ�ŷ�ƣ��������Ż����Ƴ�̽[J]. �й������ڿ���, 2007, 19(1): 57-0.
ZHANG Fu��bo;WANG Guo��dong;ZHANG Dian��hua;LIU Xiang��hua. Preparatory Study on Optimal Control of Electro��Hydraulic Fatigue Testing Machine. Chinese Journal of Iron and Steel, 2007, 19(1): 57-0.
2007, Vol. 19 
