Research and Analysis of Medium-low Speed Maglev Train Noise

Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 2

Abstract

[Objective] In the actual operation process, the noise generated by medium-low speed maglev trains is a key factor affecting the quality of train service. Therefore, it is necessary to analyze the noise in medium-low speed maglev trains. [Method] The testing scheme for noise in medium-low speed maglev trains is introduced. Taking a certain medium-low speed maglev vehicle as example, the train maglev noise, suspension frame vibration, and linear motor current under train typical operating conditions are analyzed, and corresponding noise reduction measures are proposed. [Result & Conclusion] The noise frequency at 9# motor measuring point is mainly concentrated in the low-frequency band below 50 Hz, with significant noise at 1000 Hz and its multiplications. The vertical vibration acceleration of the suspension frame is mainly concentrated between 0 to 1.5 g (g as gravitational acceleration), and the vertical acceleration during braking is significantly higher than that during acceleration. The high-frequency vibration component of the suspension frame vertical acceleration is mainly concentrated at 1 000 Hz and its multiplications. The harmonic electromagnetic excitation force caused by the 1 000 Hz harmonic current leads to electromagnetic excitation of vehicle bottom mechanical structure, resulting in high-frequency noise from the maglev train bottom. Noise reduction measures such as adjusting switching frequencies and installing filters can effectively reduce the operating noise of medium-low speed maglev trains.

Authors and Affiliations

Yinghua LI, Jun YANG, Ming GAO, Xiaokang LIAO, Fengyu OU

Keywords

Related Articles

Analysis of the Interface between Urban Rail Transit Signaling System and Platform Screen Door System

Objective The control of PSD (platform screen doors) by signaling system is crucial for ensuring urban rail transit stable operation. The interface between the signaling system and the PSD system is equally important for...

Feasibility Study of Robot Technology for Vehicle Carbody Surface Paint Maintenance in Urban Rail Transit

Objective In the maintenance process of urban rail transit vehicles, the cleaning, grinding and polishing of the vehicle carbody surface paint often require a long time when done manually. Moreover, manual polishing oper...

Analysis on the Performance of New Mountain Gear Rail Train Brake

Objective The maximum slope of the mountain gear rail line can reach 250‰. As the sliding force generated by the component of the gravity is much greater than the maximum friction force between wheel and rail, relying so...

Planar Minimum Curve Radius for Embedded Medium-low Speed Maglev Lines

[Objective] As a new type of rail transit, the embedded medium-low speed maglev system relies on non-contact support for vehicle and track systems, and the vehicle running mechanism is embedded within the track beam. The...

Timing Design and Commissioning Scheme for Linkage between Urban Rail Transit Electric Passenger Car Doors and Platform Doors

Objective Realizing the synchronous linkage between electric passenger car doors and platform doors (hereinafter referred to as "car-platform doors") in urban rail transit can further improve the metro operation efficien...

Download PDF file
  • EP ID EP730097
  • DOI 10.16037/j.1007-869x.2024.02.032
  • Views 46
  • Downloads 0

How To Cite

Yinghua LI, Jun YANG, Ming GAO, Xiaokang LIAO, Fengyu OU (2024). Research and Analysis of Medium-low Speed Maglev Train Noise. Urban Mass Transit, 27(2), -. https://europub.co.uk./articles/-A-730097