直线超声电机定/动子接触的微观力学模型

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (20) : 90-93.

论文

直线超声电机定/动子接触的微观力学模型

周胜利姚志远

作者信息 +

The Micromechanics Model Showing the Contact of Linear Ultrasonic Motors’ Stators and Movers

Zhou Shengli, Yao zhiyuan

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文章历史 +

摘要

以直线超声电机定/动子接触的微观力学特性为研究对象，首先通过实验测试了定/动子接触表面的粗糙度和统计参数，并基于概率统计方法得到了定子接触表面各点高度的概率分布函数，再通过伪随机数模拟的方法给出接触表面的模拟模型；然后利用赫兹微观接触模型，建立定/动子接触的微观力学模型；最后得到定/动子的预压力、接触变形量和实际接触面积之间的关系。研究有助于建立直线超声电机的整体动力学模型和分析其摩擦摩损特性。

Abstract

The micromechanics features of the contact of linear ultrasonic motors’ stators and movers are discussed. The contact surfaces’ roughness and statistical parameters were tested in experiments, the probability-distribution function showing the highness of the dots on the stators’ contact surfaces was obtained based on probability statistics method, and the simulation model of the contact surfaces was given through the random number simulation method. Then the micromechanics model of the contact surfaces of the stators and movers was established using the Hertz microscopic contact model. The relationship of the pre-stress on the stators and movers, contact deformation and the real area of contact was obtained at last. The discussion helps to establish the overall dynamic model of linear ultrasonic motors and analyse their features of frictional wear.

导出引用

周胜利姚志远. 直线超声电机定/动子接触的微观力学模型[J]. 振动与冲击, 2012, 31(20): 90-93

Zhou Shengli; Yao zhiyuan. The Micromechanics Model Showing the Contact of Linear Ultrasonic Motors’ Stators and Movers[J]. Journal of Vibration and Shock, 2012, 31(20): 90-93