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Noise active control system of railcar train cab

An active control system and noise control technology, applied to locomotives, sound-generating devices, instruments, etc., can solve problems such as poor effects, and achieve obvious noise reduction effects and high accuracy

Pending Publication Date: 2017-10-20
邢优胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional noise control schemes mostly use structural design and the application of sound-absorbing materials for physical noise reduction. This passive noise control has a certain noise reduction ability for high-frequency noise above 1kHz, but it is less effective for medium and low-frequency noise.

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  • Noise active control system of railcar train cab
  • Noise active control system of railcar train cab
  • Noise active control system of railcar train cab

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045]The technical solutions of the present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0046] The present invention implements and discloses an active noise control system in the cab of a rail train, such as figure 1 shown, including:

[0047] A plurality of reference nois...

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Abstract

The present invention discloses a noise active control system of a railcar train cab. The system comprises a plurality of reference noise sensors, a plurality of error microphones, an MIMO active noise reduction controller and two loudspeakers. Compared to the prior art, a series of irrelevant reference acoustic modes are employed to allow the accuracy of an obtained optimal noise control mode to be higher and better match with the noise mode of the railcar train cab, target signals are emitted according to the optimal noise control mode, and the matching degree of the target signals and the noise in the railcar train cab is higher according to the target signals emitted through the optimal noise control mode having higher accuracy so as to realize the wideband noise reduction effect of noise in the railcar train cab and have the more obvious noise reduction effect. sampling periods, adaption filter orders and convergence factors are continuously regulated to perform adaption correction of filter weight convergence so as to improve the system convergence speed while ensuring the stability of the system and obtain the noise control in the wideband.

Description

technical field [0001] The invention relates to the technical field of noise control, in particular to an active noise control system in a rail train cab. Background technique [0002] Noise pollution has become an environmental problem of great concern to the whole world, and the increasing noise seriously affects people's normal work, study and life. The development of the modern transportation industry has brought noise from various means of transportation. With the improvement of people's requirements for the ride comfort of rail trains, the strengthening of environmental protection awareness and the development of the rail train industry, the noise control of rail trains has become increasingly popular. attention. Excessive noise in the train affects the physical and mental health of the drivers and passengers, especially the strong noise in the driver's cabin is likely to cause ear discomfort, reduced hearing sensitivity, and even hearing damage to the drivers. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16G10K11/175B61C17/04
CPCG10K11/16G10K11/175B61C17/04
Inventor 邢优胜
Owner 邢优胜