Electrohydraulic Servo System Controlled by Chip Calculator with Artificial Intelligence

PID control method is difficult to control electrohydraulic servo systems,which possess natural nonlinearity and time varing properties, to get good perfor-mance. But the human intelligence simulating control, based on PID,is a kind ofintelligent control, which simulates human intelligent activities when one controlsthe moving objects. This control method will not make destructive interferenceamong the rapid, steady and accurate response characteristics, but the traditionalPID will. The human being intelligence simulating control can make the systembehave well according to man's will in three stages: accelerating at starting, brak-ing when overshooting and eliminating error away when steadying. Experimentsproved the outstanding performances of human intelligence simulating control.