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Journal of Zhejiang University SCIENCE A
ISSN 1673-565X(Print), 1862-1775(Online), Monthly
2015 Vol.16 No.5 P.418-426
A cutterhead energy-saving technique for shield tunneling machines based on load characteristic prediction
Abstract: In this paper, we propose a shield cutterhead load characteristic forecast method and apply it to optimize the efficiency of the cutterhead driving system. For the forecast method, wavelet transform is used for preprocessing, and grey model GM(1,1) for forecasting. The performance of the wavelet-based GM(1,1) (WGM(1,1)) is illustrated through field data based load characteristic prediction and analysis. A cutterhead mode control strategy (CMCS) is presented based on the WGM(1,1). The CMCS can not only provide operators with some useful operating information but also optimize the stator winding connection. Finally, the CMCS is tested on a cutterhead driving experimental platform. Results show that the optimized stator winding connection can improve the system efficiency through reducing the energy consumption under part-load conditions. Therefore, the energy-saving CMCS is useful and practical.
Key words: Shield cutterhead, Driving system, Load characteristic forecast, Cutterhead mode control strategy (CMCS)
方法：1.采用基于小波变换的灰色模型WGM(1,1)对盾构机刀盘载荷特征进行预测；2.基于该预测方法，设计刀盘模式控制策略（CMCS），实现刀盘驱动系统的能耗优化控制。
结论：1.相对传统灰色模型GM(1,1)，基于小波变换的灰色模型WGM(1,1)可更加精确地预测盾构机刀盘载荷特征，是一种更加有效的载荷特征预测方法；2.改变电动机定子接线方式是一种简单有效的提升刀盘系统效率的方法；3.刀盘模式控制策略不仅可以为操作者提供操作建议，而且可以通过优化电机定子接线方式，降低刀盘在低载荷下的能量消耗，提升刀盘驱动系统的效率。
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DOI:
10.1631/jzus.A1400323
CLC number:
TH137
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On-line Access:
2015-05-04
Received:
2014-10-23
Revision Accepted:
2015-04-17
Crosschecked:
2015-04-20