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Research on Modeling Method of Runway Frictional Coefficient Measuring Vehicle Based on Impedance Diagrams

机译:基于阻抗图的跑道摩擦系数测量车建模方法研究

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摘要

Airport runway friction coefficient is an important parameter to evaluate the quality of runway which is usually measured by runway friction coefficient measuring vehicle. In order to reduce the airport runway friction coefficient measuring error which comes from runway vibration caused by road roughness and vehicle its own structural characteristics, an impedance diagram is used to model the suspending system and measuring system of the measuring vehicle. The power spectral density of pavement and inverse discrete Fourier transformation are introduced to model runway surface roughness as excitation input. The rationality of the stimulating established model is validated by comparing with an airport runway surface roughness measurement data. Runway friction coefficient measuring vehicle's measuring error can be reduced and the measurement accuracy can be improved by using the impedance diagram modeling method.
机译:机场跑道摩擦系数是评价跑道质量的重要参数,通常由跑道摩擦系数测量车辆进行测量。为了减少由于路面不平和车辆本身的结构特性引起的跑道振动而引起的机场跑道摩擦系数测量误差,使用阻抗图对测量车辆的悬挂系统和测量系统进行建模。引入路面的功率谱密度和离散傅立叶逆变换,以模拟跑道表面粗糙度作为激励输入。通过与机场跑道表面粗糙度测量数据进行比较,验证了建立的模型的合理性。使用阻抗图建模方法可以减少跑道摩擦系数测量车辆的测量误差,提高测量精度。

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