Abstract
In this paper, an intelligent control scheme is proposed to suppress vibrations between the pantograph and the catenary by regulating the contact force to a reference value, thereby achieving stable current collection. In order to reduce the computational cost, an interval Type-2 adaptive fuzzy logic control with the Moradi–Zirhohi–Lin type reduction method is applied to deal with model uncertainties and exterior interference. Based on a simplified pantograph–catenary system model, the comparative simulation results show that variation of the contact force can be attenuated and variation disturbances can be repressed simultaneously. Furthermore, in terms of computational burden, the proposed type reduction method outperforms other type reduction methods.
Highlights
Novel Type-Reduction Technology.Railway electrification systems that transmit electrical energy from the traction substation to the moving high-speed trains are an efficient alternative to highway and air transportation
We focus attention on the content of pantograph–catenary dynamics and the main objective to provide a novel type reduction (TR) technology for intelligent contact force regulation of the pantograph–catenary system (PCS)
The interval Type-2 adaptive fuzzy logic control (IT2AFLC) with the MZL TR method is presented to suppress the vibration between the pantograph and the catenary and to deal with the uncertainties resulted from the noisy training data, noisy measurements, and linguistic uncertainties
Summary
An appropriate contact force between the pantograph and the catenary makes the current collection process effective. To keep the contact force stable, the system output feedback considers the stiffness of the contact wires along each span, the speed of the train, and the distance of adjacent catenary lines. The contact wire irregulation stochastics and effect on high-speed railway pantograph–catenary interaction was analyzed in [1]. We focus attention on the content of pantograph–catenary dynamics and the main objective to provide a novel type reduction (TR) technology for intelligent contact force regulation of the PCS. To effectively decrease the uncertain fluctuation of the contact force, the dynamic uplift force which is applied to pantograph frame by actuator plays an important part in the PCS.
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