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On the real-time estimation of the wheel-rail contact force by means of a new nonlinear estimator design model

机译:基于新的非线性估算器设计模型的轮轨接触力实时估算

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HighlightsA novel technique for the real-time estimation of the wheel-rail contact forces is presented.Nonlinearities of the wheel-rail contact are taken into account.An estimator design model is derived.Demonstrated effectiveness by means of comparative studies.AbstractThe dynamics of the railway vehicles is strongly influenced by the interaction between the wheel and the rail. This kind of contact is affected by several conditioning factors such as vehicle speed, wear, adhesion level and, moreover, it is nonlinear. As a consequence, the modelling and the observation of this kind of phenomenon are complex tasks but, at the same time, they constitute a fundamental step for the estimation of the adhesion level or for the vehicle condition monitoring. This paper presents a novel technique for the real time estimation of the wheel-rail contact forces based on an estimator design model that takes into account the nonlinearities of the interaction by means of a fitting model functional to reproduce the contact mechanics in a wide range of slip and to be easily integrated in a complete model based estimator for railway vehicle.
机译: 突出显示 提出了一种实时估算轮轨接触力的新技术。 车轮的非线性- 衍生出一个估算器设计模型。 •< / ce:label> 通过比较研究证明了有效性。 < / ce:simple-para> 摘要 铁路车辆的动力是强烈地受到车轮和轨道之间相互作用的影响。这种接触受多种条件因素的影响,例如车速,磨损,附着力水平,而且是非线性的。结果,对这种现象的建模和观察是复杂的任务,但同时,它们构成了估算附着力水平或车辆状态监测的基本步骤。本文提出了一种基于估算器设计模型的轮轨接触力实时估算的新技术,该模型通过拟合模型来考虑相互作用的非线性,该模型可在很大范围内重现接触力学。滑移并易于集成到基于模型的完整铁路车辆估算器中。

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