Application of electronic-hydraulic closed digital servo motor speed control system

A study focussed on an electronic-hydraulic servo motor, in which an optical-electric pulse coder is used as the feedback sensor. Integrating structurally the servo valve into a motor, the natural frequency of the system is increased. By means of a PC104 bus CPU board, intelligent control algorithm is realized, and step-response experimental results are shown. The speed measurement device having high accuracy, wide range and fast response is implemented by the use of a single chip computer.