针对提升装置同步误差影响盾构管片拼装工作效率与质量的问题,提出双比例阀提升液压缸同步控制方法.建立双比例阀同步提升系统的数学模型,对双比例阀PID控制与模糊PID控制的同步控制性能进行仿真对比分析.在盾构电液控制系统综合实验台上进行单比例阀同步提升实验、双比例阀普通PID同步提升实验与双比例阀模糊PID同步提升实验,结果表明,单比例阀普通PID同步误差在一0.002~+0.020m,双比例阀普通PID同步误差在一0.010~0.006m,双比例阀模糊PID同步误差在一0.004~0.005m,双比例阀模糊PID的控制可显著提高盾构管片拼装机提升液压缸同步控制精度.
Adouble proportional-valve (DPV) control method oflifting hydraulic cylinders was proposedto overcome the problem of the working efficiency and quality loweredby the synchronization error. Construc- ting a mathematical model of DPV control system, this paper carried out simulation comparison between the regular PID control and fuzzy PID controlfor the lifting cylinders synchronization of the DPV control system, and testedthe lifting cylinders synchronizationprecisionforregular PID control of single-proportion- al-valve(SPV) system, regular PID control and fuzzy PID control of DPV systemrespectively on a segment erector positioning control experiment rig. The results show that regular PID control of SPV, regular PID control of DPV and fuzzy PID control of DPV system behave with displacement deviation of --0. 002 -1-0. 020 m, --0. 010~0. 006 m, and --0. 004 m to 0. 005 m respectively. The fuzzy PID control of DPV can significantly improve the synchronization control precision ofliftinghydraulic cylindersfor the segment erector of shield tunnel boring machine.