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Active noise control system for air conditioner fan

A technology of active noise control and air-conditioning fans, which is applied in the fields of noise suppression, space heating and ventilation details, and sound-generating equipment. It can solve problems such as human health injuries, and achieve rapid control and good quality control effects.

Inactive Publication Date: 2020-05-15
BESTAR HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If you live and work in such a noisy environment for a long time, it will cause certain damage to human health.

Method used

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  • Active noise control system for air conditioner fan
  • Active noise control system for air conditioner fan
  • Active noise control system for air conditioner fan

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: refer to figure 1 , an active noise control system for an air conditioner fan, comprising:

[0032] The signal conversion unit 4 is fixed at the air outlet of the air-conditioning fan 3, and is used to convert the acoustic signal of the noise at the air-conditioning fan 3 into an electrical signal. The signal conversion unit 4 preferably adopts a reference microphone,

[0033] The controller 5 generates a control signal of interference noise, the output end of the signal conversion unit is connected to the input end of the controller, the active noise control algorithm based on FxLMS adjusts the self-control coefficient of the controller based on the active noise control algorithm of FxLMS, The output of the controller reaches the monitoring point after passing through a specific physical channel, so as to minimize the target function. The signal conversion unit 4 provides the initial reference noise signal for the active noise control unit. The controller...

Embodiment 2

[0046] Embodiment 2: An active noise control system for an air-conditioning fan, comprising: a signal conversion unit 4, fixed at the air outlet of the air-conditioning fan 3, for converting the acoustic signal of the noise at the air-conditioning fan 3 into an electrical signal, and converting the signal Unit 4 preferably adopts an acoustic signal sensor and a controller to generate a control signal of interference noise, the output end of the signal conversion unit is connected to the input end of the controller, an active noise control algorithm based on FxLMS, ​​an active noise control algorithm based on FxLMS Adjust the controller's own control coefficient, the output of the controller reaches the monitoring point after passing through a specific physical channel, and the control method that minimizes the objective function. The signal conversion unit 4 provides the initial reference noise signal for the active noise control unit. The controller is based on The active nois...

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Abstract

The invention relates to the technical field of noise reduction, in particular to an active noise control system for an air conditioner fan, the active noise control system comprises a signal conversion unit for converting an acoustic signal of noise at the air conditioner fan into an electric signal; a controller used for receiving the electric signal of the signal conversion unit to generate a control signal of interference noise; according to the active noise control algorithm based on FxLMS, the controller provides a physical platform for the active noise control algorithm based on the FxLMS . The active noise control algorithm based on the FxLMS adjusts the control coefficient of the controller, the output of the controller reaches a monitoring point after passing through a specific physical channel, the objective function reaches the minimum control method, and a secondary actuator generates secondary sound output after receiving a control signal of the controller. An error sensor is used for picking up the interference sound field signal generated by the secondary actuator and feeding back the interference sound field signal to the controller, the system is reasonable in design, simple in structure and stable in operation, and the noise of the air conditioner fan can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of noise reduction, and in particular relates to an active noise control system for an air conditioner fan. Background technique [0002] As people's pursuit of quality of life is getting higher and higher, the popularity of air conditioners is getting higher and higher, especially household air conditioners, which have maintained a steady growth trend in recent years. When people choose an air conditioner, they have requirements for the performance of the air conditioner in all aspects, not only the basic performance requirements of cooling and heating temperature control, power consumption, but also in terms of comfort, noise and vibration, and user experience. In terms of extended performance requirements. The indoor unit of the household air conditioner is the part most in contact with people's life during the use of the household air conditioner, and people's requirements for it are becoming stricter d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178F24F11/89F24F13/24
CPCF24F11/89F24F13/24F24F2013/247G10K11/17817G10K11/17821G10K11/17853
Inventor 陶文俊徐金国王平
Owner BESTAR HLDG
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