Abstract：The control of electric valve is important to the auto-control system of the pump test-bed.The control system of electric valve adopts industrial computer,which determines the optimal operating conditions of the test flux according to expert system.With sensor data received from the pump parameter measuring instrument,the industrial computer analyses acquisition of the corresponding data and sends instructions to the PLC.In the PLC,the PI control method is adopted,with the enactment and self-adjustment of the PI parameter,in which the output of PI regulator is proportional to the import of the deviation,and is also proportional to the deviation time to the integral.The PI control method eliminates the static error of the control process and achieves a closed-loop adjustment of the precise valve control.The monitoring software,PLC software,the communication software of PLC and industrial computer are designed.And the control,data acquisition and processing of pump test are achieved.The experiment indicates that the PI control method has fairly good stability and dynamic behavior to the flux adjustment in water pump testing.
尤亚峰；马新华；李乔军；肖开华. 基于PLC的水泵试验台电动阀门PI控制的实现[J]. 排灌机械工程学报, 2007, 25(4): 50-53.
YOU Ya-feng, MA Xin-hua, LI Qiao-jun, Xiao Kai-hua. Realization of the electric valve′s PI control in pump test-bed based on PLC. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(4): 50-53.
