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Wheelwork noise control method and controller

A technology of rotating device and noise control, applied in the direction of active noise control, sounding equipment, instruments, etc., can solve the problems of large noise change and inability to achieve noise reduction

Inactive Publication Date: 2011-10-12
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a noise control method and controller of a rotating device, which is used to solve the defect that noise reduction cannot be achieved when the noise generated by the rotating device changes greatly in the prior art, and achieve the purpose of reducing the target noise of the rotating device

Method used

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  • Wheelwork noise control method and controller
  • Wheelwork noise control method and controller
  • Wheelwork noise control method and controller

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specific Embodiment approach

[0058] Based on the above, this embodiment provides a specific implementation of step 203: when the rotating device 14 generates target noise, and the controller 11 sends a sound command to the secondary sound source sound generating device 12, the secondary sound source generating device 12 sends out a secondary sound source Under the environment of sound waves, the sound wave signal (comprising target noise, secondary sound wave and background noise) that reference sensor 13 detects; Controller 11 first calculates the position of reference sensor 13 according to the transfer function C and the last sound command. Secondary sound wave, then the acoustic wave signal fed back by the reference sensor 13 is subtracted from the calculated secondary sound wave to obtain the target noise; then by applying the transfer function A and the obtained target noise, the target noise is propagated to the assumption that there is an error The target sound wave signal at the sensor position (i...

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Abstract

The invention provides a wheelwork noise control method and a controller. The method comprises the steps of obtaining noise and sound wave signals generated by the wheelwork and fed back by a reference sensor; obtaining rotation speed information of the wheelwork; according to the rotation speed information, inquiring a function mapping table pre-generated to obtain a transfer function; accordingto the transfer function and the sound wave signal, generating a sounding order; sending the sounding order to a secondary sound source sounding device to make the secondary sound source sounding device to deliver secondary sound wave, wherein the secondary sound wave is used to restrain the noise generated by the wheelwork. The controller includes a signal obtaining unit, a rotation speed obtaining unit, an inquiring unit, a first generating unit and a sending unit. By the technical scheme in the invention, the problems in the prior art can be solved, and the influence of the target noise generated by the wheelwork can be eliminated, thereby realizing the aim of controlling noise.

Description

technical field [0001] Embodiments of the present invention relate to active noise control technologies, and in particular to a noise control method and controller for a rotating device. Background technique [0002] With the improvement of living standards and the enhancement of environmental protection awareness, people put forward higher and higher requirements for the noise emitted by equipment. Noise is not only one of the indicators for product market access, but also an important factor for product differentiation. Due to the improvement of product performance and the demand for miniaturization, traditional passive noise reduction technology is facing more and more challenges in terms of integration and energy efficiency in the face of medium and low frequency noise control requirements. Then, active noise control technology appeared. Active noise control is a technology that uses the detection-feedback mechanism to use the sound waves of opposite phases generated by...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16
CPCG10K2210/1082G10K2210/109G10K2210/121G10K2210/3033G10K2210/3048G10K2210/3055G10K11/17815G10K11/17817G10K11/17821G10K11/17853G10K11/17881
Inventor 杨成鹏黎宝生
Owner HUAWEI TECH CO LTD
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