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首页> 外文期刊>精密工学会誌 >DEVELOPMENT OF ACTIVE SQUEEZE AIR BEARING USING OSCILLATION OF PIEZOELECTRIC ACTUATORS(1ST REPORT) - BASIC STUDY WITH PROTOTYPE MODEL-
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DEVELOPMENT OF ACTIVE SQUEEZE AIR BEARING USING OSCILLATION OF PIEZOELECTRIC ACTUATORS(1ST REPORT) - BASIC STUDY WITH PROTOTYPE MODEL-

机译：压电致动器振动主动挤压空气轴承的开发（第一报告）-原型模型的基础研究-

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Hydrostatic air bearings allow a floating shaft to rotate accurately with compressed air. They are utilized in many fields because of their load carrying capacity, although the shaft does not rotate. However ,the installation of additional equipment such as air compressor, regulator and pipelines etc. is required to supply pressured air into the bearing .In this research, piezoelectric actuators oscillate a number of pads surrounding the shaft. In consequence, squeeze air films with load carrying capability are developed. A piezo displacement pattern consists of two functional waveforms. The AC component stimulates the squeeze motion and the other DC component shifts the other DC component shifts the mean position of oscillating pad. Therefore, application of a controllable piezo-driving pattern allows the shaft to be manipulated. In this paper, the air film characteristics are investigated experimentally for a prototype model with two circular plates of 15mm in radius as oscillating pads. The squeeze air film was able to support the object against the external load of 4.9N with a mean film thickness of 5.5μ m. By constructing a simple feedback system, the object was manipulated accurately without contact.
机译：静压空气轴承可使浮动轴与压缩空气一起精确旋转。尽管轴不旋转，但由于它们的承载能力，它们可用于许多领域。但是，需要安装额外的设备，例如空气压缩机，调节器和管道等，以将压缩空气供应到轴承中。在这项研究中，压电致动器使围绕轴的多个垫片产生振动。结果，开发了具有承载能力的挤压空气膜。压电位移模式由两个功能波形组成。 AC分量刺激挤压运动，另一个DC分量移动，另一个DC分量移动振动垫的平均位置。因此，可控制的压电驱动模式的应用允许对轴进行操纵。在本文中，以两个半径为15mm的圆形板作为振动垫的原型模型，对气膜特性进行了实验研究。挤压空气膜能够承受4.9N的外部负载，平均膜厚为5.5μm。通过构建一个简单的反馈系统，无需接触即可准确地操纵对象。

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