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异形盾构是盾构技术发展的一个主要方向,研制合理的切削机构是开发异形盾构的核心技术。本文选择混合驱动变异五杆椭圆轨迹机构作为椭圆断面盾构的切削机构进行理论和技术研究。采用图解解析法研究了变异五杆机构切削椭圆轨迹时多种情况下的变化规律,并在此基础上研究了可控电机的控制规律;为了研究切削机构初始位置对切削椭圆轨迹的影响,开发了异形盾构变异五杆切削机构分析与仿真软件,经过理论分析和计算机仿真形成切削椭圆轨迹的控制理论和算法,仿真结果验证了控制理论和算法的正确性,充分表明变异五杆机构能够提供切削轨迹的柔性。
Special-shaped shield is a major direction of the development of shield technology, the development of a reasonable cutting mechanism is the development of special-shaped shield core technology. In this paper, we choose the hybrid drive variation five-bar elliptical locus mechanism as the cutting mechanism of elliptical section shield to conduct theoretical and technical research. In this paper, the law of variation of five-bar mechanism cutting elliptical locus is studied by using graphical analysis method. On the basis of this, the control law of controllable motor is studied. In order to study the influence of initial position of cutting mechanism on cutting ellipse locus, The analysis and simulation software of variant five-bar cutting mechanism with special-shaped shield is presented. After theoretical analysis and computer simulation, the control theory and algorithm of cutting elliptical locus are formed. The simulation results verify the correctness of the control theory and algorithm, and fully demonstrate that the variation five-bar mechanism can provide Cutting trajectory flexibility.