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An Improvement Proposal to the Static Friction Model

机译:静摩擦模型的改进建议

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摘要

Friction is a force acting against the relative motion between two surfaces in contact. This phenomenon is present in all mechanical systems and has a great impact on the control area. The design of mechatronic systems and the compensation techniques require a broad knowledge of the effects that friction produces. The phenomenon has two well-defined phases: static friction presents before the motion between the surfaces in contact is clearly visible, while kinetic friction appears when that motion at large scale has already started. There are different friction models for each of those phases. In this work we propose an improvement to the static friction models, which consist in assuming that the maximum static friction coefficient is no more a constant but a function of the rate of change of the external force that produces the motion. After explaining and justifying the proposal, the procedure for obtaining the parameters of the new model is mentioned. At the end, an experimental study on a direct-drive motor allows us to validate the proposed model.
机译:摩擦力是抵抗两个接触表面之间的相对运动的力。这种现象存在于所有机械系统中,并且对控制区域有很大的影响。机电系统的设计和补偿技术需要对摩擦产生的影响有广泛的了解。该现象有两个明确定义的阶段:静摩擦出现在接触表面之间的运动清晰可见之前,而动摩擦出现在大规模运动已经开始时。这些阶段的每个阶段都有不同的摩擦模型。在这项工作中,我们提出了对静摩擦模型的改进,其中包括假定最大静摩擦系数不再是常数,而是产生运动的外力变化率的函数。在对建议进行解释和论证之后,提到了获取新模型参数的过程。最后,通过对直驱电机的实验研究,我们可以验证所提出的模型。

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  • 来源
    《Mathematical Problems in Engineering》 |2013年第7期|946526.1-946526.8|共8页
  • 作者单位

    Division of Graduate Studies and Research, Technological Institute of La Laguna, 27000 Torreon, COAH, Mexico;

    Division of Graduate Studies and Research, Technological Institute of La Laguna, 27000 Torreon, COAH, Mexico;

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