| The shield machine(SM) has been developing the fourth-generation technology with the characteristics of big diameter, great thrust, great torque, diversification, and automation. The drive system of the cutter head has the greatest energy expenditure in SM, the hydraulic drive mode is the uppermost drive mode by reason of its bigger power density and more adapting with SM requirement in great power and lesser setting space, and it is developing towards the energy saving and intelligentize. So, it needs to study the new generation hydraulic drive system and control methods from three aspects thereinafter. Firstly, research the hydraulic system efficiency and advance the higher efficiency hydraulic drive method. Secondly, research the reasionship between torque of the cutter head (Tc) with the other working parameters and the exact computational torque model for the accurate design and control of the cutter head drive system. Thirdly, study how the cutter head speed adapts the gelolgical condition; furthermore, propose brainpower control method for the self-adapting drive power and reducing the drive power largely.The dissertation aims at aφ6.3m earth pressure balance shield machine (EPB) and aφ1.8m test SM, proposes three new hydraulic drive modes including the multi-variable pumps built-up drive with closed hydraulic circuit, the variable displacement pump control and the variable speed pump control with closed loop control; proposes an accurate Tc calculate model for EPB; proposes a brainpower control method of the cutter head speed. In this paper, the research aiming at the hydraulic systems with different drive modes is taken by the principle analyse, test and simulation which the models are highly alike with the real systems by taking advantage of the AMESim fully and especially considing the change of the out load. The reaserch includes the hydraulic system efficiency, the cutter head speed, time domain analyse, frequency domain analyse and the hydraulic system performances in the changed load, hydraulic motor failure, or the cutter head binding conditions. This paper also analises Tc's constitution of EPB, and studies on Tc of theφ1.8m test SM by simulation and test including Tc and the relationship of Tc with other parameters, and proposes the accurate calculate model of Tc, furthermore, proposes a brainpower control method of the cutter head speed based on the earth condition recognition and the index of drive power efficiency, the statistical classified method of the tunneling earth layer and the expert system have been firstly researched.The main contents of each chapter are summarized in the following:In chapter 1, the history and current technology status of SM and its electro-hydraulic control system are discussed based on lots of the publications and conference papers. The developing process and- current technology of the cutter head hydraulic drive are also discussed, futhermore the hydraulic energy saving techniques are introduced. Consequently, the research contents and the goal of the dissertation were proposed.In chapter 2, the syudy shows that the hydraulic efficiency can be improve 3%—7% by multi-variable pumps built-up drive mode contrast the multi-variable pumps joint drive mode. The cutter head hydraulic drive system ofφ6.3m EPB is designed using the multi-variable pumps built-up technique, the electro-hydraulic proportional control technique and the electr-hydraulic mixed constant power control technique. The hydraulic system performance is analyzed by AMESim and tunneling test including the multi-pumps built-up, const power control, positive and negative rotation and other working conditions.In chapter 3, the cutter head hydraulic drive sytstem ofφ1.8m test SM is designed in which the closed loop control technique is used. System integration and PLC control technique with field bus of hydraulic system for driving the cutter head and screw conveyer are introduced. The AMESim simulation and test research to the cutter head hydraulic drive system are made including the positive and negative rotation; cutter head speed adjustment, and the validity of the simulation model. The efficiency of two hydraulic drive systems of the cutter head are analized contrastively, the result shows that efficiency of the variable speed pump control mode is higher than the variable displacement pump control mode about 4%—25%, so it is the more energy saving hydraulic drive mode of the cutter head drive.In chapter 4, the infection factors and the constitution of the EPBs Tc are analyzed; the cutter head torque model of the test SM is built up by AEMSim. By test and the simulation, Tc and the relationship between Tc and the cutter head rotate speed, the thrust speed, the thrust force, and other parameters are analized; finally, confirm the accurate EPBs Tc model.In chapter 5, the earth recognition method used by pattern recognition technique and the power efficiency index of the cutter head drive are studied, the result shows that the feature space built by FPI and TPI index has good partition character to the tunneling earth. Based on it, the cutter head speed expert system is proposed, and the self-adaption control method of the cutter head drive is discussed at first step.In chapter 6, the main achievements and conclusion are summarized and the further research work is put forward here.
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