Using a combination of vibration absorber and a classical active controller to suppress the chatter vibration and increase the stability in turning process

Yashar Ebadi, H. Moradi
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引用次数: 1

Abstract

Free, forced, and self-excited vibrations are the three main types of machine tool vibrations. Self-excited vibration is the most important type of destructive vibration in machining. The most important factor in increasing the chipping rate, stability, and tool life is decreasing this type of destructive vibration. In this paper, we aim to introduce a method to control the self-excited vibrations by the means of the combining a vibration absorber as a passive controlling method and a classical active controller such as PID or compensator or the other classical methods. Utilizing the SIMULINK toolbox of MATLAB software, first, we designed and added the vibration absorber to the model simulation. Then, the active controller which can have a piezo actuator force as its input was designed and applied. The effect of each absorber, designed controller, and their combination is investigated as well as the system time response and stability diagrams that are evaluated in the presence and absence of them. Implementation of the control law mentioned above, in its related electronic circuit of the turning machine, will be considered as the future stage of the current project.
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采用减振器与经典主动控制器相结合的方法抑制了车削过程中的颤振,提高了车削过程的稳定性
自由振动、受迫振动和自激振动是机床振动的三种主要类型。自激振动是机械加工中最重要的一种破坏性振动。提高切削速度、稳定性和刀具寿命的最重要因素是减少这种破坏性振动。本文旨在介绍一种将吸振器作为被动控制方法与经典的主动控制器(如PID或补偿器)或其他经典方法相结合的自激振动控制方法。利用MATLAB软件中的SIMULINK工具箱,首先设计并加入了减振器,对模型进行了仿真。然后,设计并应用了以压电致动器力为输入的主动控制器。研究了每个吸收器、设计的控制器及其组合的影响,以及在存在和不存在它们的情况下评估系统时间响应和稳定性图。实施上述控制律,在其相关的车床电子电路中,将被认为是当前项目的未来阶段。
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