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首页> 外文期刊>Journal of Mechanical Science and Technology >Study on synchronization characteristics for self-synchronous vibration system with dual-frequency and dual-motor excitation
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Study on synchronization characteristics for self-synchronous vibration system with dual-frequency and dual-motor excitation

机译：双频和双电机激励自同步振动系统同步特性研究

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摘要

In petroleum drilling engineering, drilling shakers are critical devices for cleansing solid particles and recycling drilling fluid. For the problem that the vibration screen with a single frequency usually results in flurry overflow due to the blocking of screen mesh, a selfsynchronous vibratory system with dual-frequency and dual-motor excitation is proposed. But it is not clear about the synchronization mechanism and dynamic characteristics of the system, which causes a lack of theoretical description for the source of synchronization phenomenon. Hence, this paper explores the synchronization mechanism and dynamic characteristics around the proposed system above. First, vibration and stability theory are employed to master the dynamic characteristics of the system, and the dynamic model is established by Lagrange equation. Then, displacement responses of the system are obtained by dimensionless formulas. Synchronous condition and synchronous stability between the unbalanced rotors are derived with small parameter method and Poincare method. Finally, some computer simulations are implemented to further verify the correctness of the theoretical analysis. The research result shows that the synchronous ability between the two unbalanced rotors actuated by dual-frequency excitation is related to the distance from the rotating center of the motor to the centroid of supporting body, and the greater the distance value, the better the synchronization of the vibrating system. This study will promote the recycle technology development of drilling fluid and settlement of the common scientific issues in vibrating synchronization.
机译：在石油钻探工程中，钻井振动器是用于清洁固体颗粒和回收钻井液的关键装置。对于具有单个频率的振动筛通常导致丝网网的堵塞导致燃料溢出的问题，提出了具有双频和双电动机激励的自同步振动系统。但是，关于系统的同步机制和动态特性是不明确的，这导致对同步现象的来源缺乏理论描述。因此，本文探讨了上述建议系统周围的同步机制和动态特性。首先，采用振动和稳定性理论来掌握系统的动态特性，并且通过拉格朗日方程建立动态模型。然后，系统的位移响应由无量纲公式获得。不平衡转子之间的同步条件和同步稳定性源于小参数方法和庞纳罗的方法。最后，实施了一些计算机模拟以进一步验证理论分析的正确性。研究结果表明，通过双频激励致动的两个不平衡转子之间的同步能力与电动机旋转中心的距离与支撑体的质心有关，距离值越大，同步越好振动系统。本研究将促进钻井液的回收技术开发和振动同步中共同科学问题的解决。

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