Modeling and intelligent synchronous control for parallel-connected motor-gear driving system of TBM cutterhead

摘要

A new control strategy for hard rock tunnel boring machine (TBM) cutterhead driving system based on fuzzy PI controller (FPIC) was proposed to improve the robustness of parallel-connected multi-motor-gear driving system (PMDS) against impact load. Firstly, a single motor vector control (VC) model with flux linkage and torque close-loop was founded to make comparison with a fundamental VC model. The PMDS based on master-slave strategy was then built in Simulink, regulated by traditional PI controller (TPIC) and FPIC respectively. The results indicate that PMDS under FPIC has a more accurate velocity response and a stronger tolerance against impact load, in contrast to TPIC.