Research into the intelligent control of the cutter head drive system in Shield tunnelling machine based on the pattern recognition

This article discusses an intelligent expert control system for the cutter head speed of the shield tunneling machine, in which the earth layer recognition method and the drive power efficiency appraise method are proposed. The earth layer recognition system was based on the statistical pattern classification method and the method of calculation to the approach degree to the feature area by the data gained in simulation tunneling test. The power of the cutter head drive system was appraised by the power efficiency index proposed in this paper which is the key parameter to the speed control system of the cutter head. Finally, this paper discusses a closed loop controlled hydraulic system which dominated by the expert control system.