Active Control Technology for Lift Wing Structure Motion in High-speed Railway EMU
Journal Title: Urban Mass Transit - Year 2025, Vol 28, Issue 2
Abstract
［Objective］ The lift wing structure of high-speed railway EMU (electric multiple units) can reduce the wheel-rail frictional resistance, thereby decreasing wheel wear. However, due to the complex and variable operating conditions of high-speed railway EMU, the dynamic loads on the lift wing constantly fluctuate. To ensure the safe and efficient operation of EMU while maximizing the energy-saving and drag-reduction performance of the lift wing structure, a suitable control scheme for the lift wing is required. ［Method］ The overall structural composition of the lift wing is introduced, and an active control scheme for its motion is proposed. A decoupling control algorithm for a multi-variable coupled system based on position tracking is designed for the bottom rotation mechanism. For the angle-of-attack transformation mechanism, a cross-coupled collaborative control algorithm based on LADRC (linear active disturbance rejection control) is developed. A control process and in-place parking circuit scheme is designed for the wing-tail extension mechanism. Simulation models are constructed to validate the control performance of the proposed bottom rotation and angle-of-attack transformation control schemes. ［Result & Conclusion］ The active control scheme for lift wing structure motion can meet the functional requirements of the lift wing, including the positioning accuracy of the bottom rotation mechanism, the synchronization control requirements of the angle-of-attack transformation mechanism, and the uniform motion and in-place parking requirements of the wing-tail extension mechanism. This scheme addresses deficiencies in existing control methods, enhancing the safety, stability, and reliability of the lift wing.
Authors and Affiliations
Yan ZHU, Chengqiang WANG, Chaoqun XIANG, Ziyin FAN, Shiqing GAO, Lei WANG
Keywords
Related Articles
- EP ID EP759817
- DOI 10.16037/j.1007-869x.2025.02.020
- Views 24
- Downloads 0
From Fragmentation to Integration: Public Space Reconfiguration of Shanghai Rail Transit Baoshan Road Transfer Station
[Objective] To analyze the impact of urban rail transit infrastructure transformation on urban public space and its integration strategies, it is necessary to investigate the preconditions and specific requirements for u...
Land Subsidence Prediction Model of Rail Transit Based on High-frequency Combination Segment-Gene Expression Programming Algorithm
Objective Land subsidence prediction and control is one of the most concerned issues in rail transit shield tunnel construction. In order to solve the complex and poor interpretable problem of the model expression in the...
Reliability Analysis and Maintenance Strategy Optimization of Subway Station Platform Screen Door System
[Objective] As an important passage for passengers to get on and off the train, the platform screen door (PSD) plays a crucial role in passenger safety. To ensure the safe and stable operation of the PSD system, a reliab...
Multi-factor Deformation Analysis for Newly-built Tunnel Obliquely Under-passing Existing Tunnels by Small Clearance
［Objective］ In construction scenarios involving new tunnel construction under-passing existing tunnels by extremely small clearance, the new tunnels are highly susceptible to deformation, collapse, and other safety ris...
Analysis of Busbar Deflection in Rigid Overhead Catenary
［Objective］ In metro lines utilizing ROC (rigid overhead catenary) for current collection, excessive deflection of busbars is observed under cantilever-type suspension structural condition. Therefore, it is crucial to...