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Application of State Estimators in Active Control of Railway Wheelsets

Weerasooriya, L, Mei, TX, Li, H ORCID logoORCID: https://orcid.org/0000-0002-8479-0091 and Luo, Y (2020) Application of State Estimators in Active Control of Railway Wheelsets. In: Advances in Dynamics of Vehicles on Roads and Tracks Proceedings of the 26th Symposium of the International Association of Vehicle System Dynamics, IAVSD 2019, August 12-16, 2019, Gothenburg, Sweden.

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Abstract

This paper presents the development of a state observer for the estimation of output torque of an electromechanical actuator in the application of active wheelset control for railway vehicles. The output from the state estimator is essential to ensure that actuator responds appropriately and deliver accurate and fast control effort as demanded to maintain the stability of wheelsets. The formulation and design of the observer is based on the use of the actuator model only, so that it reduces substantially the complexity and difficult uncertainties related to the model of a full rail vehicle. The performance and robustness assessments of the state estimator integrated active control system are carried out with the use of a full bogie vehicle model.

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