ENERGY-SAVING, FAST RESPONSE AND HIGH ACCURACY

ELECTROHYDRAULIC CONTROL SYSTEM

Chen Baojiang

(Mechanic and Electronic Engineering Department, Beijing Institute of Civil Engineering and Architecture, Beijing 100044)

Cao Fan

(School of Information & Control, Beijing Institute of Technology, Beijing 100081)

Abstract: The energy-saving, fast response and high accuracy electro-hydraulic control systems are required by some mechanic equipments. The aimed system is constructed with one constant power and constant pressure pump, two integrated electro-hydraulic servo motors and one single chip microcomputer cascade human being intelligence simulating controller. The pump is the key power equipment for energy-saving, the motor is the key actuator for fast response, the control mode of simulating human being intelligence is the key control strategy for high accuracy.

Key words: Electro-hydraulic control system   Cascade control  Intelligent control  Energy-saving  Fast response  High accuracy

CLC No: TP273

Received 20041103, received in revised form 20050109