Rotation and Gate Movement Compound Control of Screw Conveyor Hydraulic System with Disturbance Compensation

摘要

This paper presents a new electro-hydraulic control system for screw conveyor device of shield tunnelling machine. The control model of the system is established, in which arotation and gate movement compound control approach is applied. It utilizes the motor speed feedback to design an outer loop and cylinder velocity feedback as an inner loop to realize flow rate disturbance compensation. Simulations are done and results are presented to verify the effectiveness and rationality of the proposed driving system and its control strategy.