Active control method and system for noise in tank cab

An active control, cab technology, applied in the field of ships and ships, to solve the time delay, ensure the accuracy, improve the convergence speed and learning accuracy.

Pending Publication Date: 2017-09-29
邢优胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional noise control technologies such as sound absorption, sound insulation, and noise reduction are more effective for high-frequency noise. Existing active noise reduction solutions generally can only control noise below 200 Hz, and can only control noise for narrow bands

Method used

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  • Active control method and system for noise in tank cab
  • Active control method and system for noise in tank cab
  • Active control method and system for noise in tank cab

Examples

Experimental program
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Embodiment 1

[0029] This embodiment provides a method for actively controlling noise in a tank cab. see figure 1 Shown is a specific embodiment of the active control method for noise in the cab of a tank in this application, and the steps in this embodiment include:

[0030] Step S1-1: The reference microphone collects noise x[n] of multiple main noise sources, and inputs it as a reference signal;

[0031] Step S1-2: The error microphone collects the residual noise e[n] after noise control, and inputs it as an error signal;

[0032] Step S2: The fuzzy controller receives the reference input signal x[n]=x[n], the error input signal e[n], and the adaptive filtering RBF (Filter-x Radial Basis Function, hereinafter referred to as FX-RBF) based on the fuzzy neural network ) net training algorithm analyzes the reference signal and the error signal, and outputs an inverted target sound signal y[n] to the loudspeaker; and

[0033] Step S3: The loudspeaker emits the target sound signal y[n] for ...

Embodiment 2

[0052] In order to make the description of the present invention clearer and more detailed, and to facilitate technical personnel to understand, the present embodiment provides an active noise control system in the cab of a tank, see Figure 5 Shown is the specific schematic diagram of the noise active control system in the tank cab of the present application.

[0053] An active noise control system in a tank cab, comprising:

[0054] The reference microphone is coupled with the fuzzy controller and is used to collect noise x[n] of multiple main noise sources as a reference signal input;

[0055] The error microphone, coupled with the fuzzy controller, is used to collect the residual noise e[n] after noise control, and input it as an error signal;

[0056] Fuzzy controller, coupled with reference microphone, speed sensor, error microphone and loudspeaker, used to receive reference input signal x[n]=x[n], error input signal e[n], adaptive FX based on fuzzy neural network -The...

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PUM

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Abstract

The invention discloses a method and system for actively controlling noise in a tank cab. The method includes collecting a plurality of main noise source noises by a reference microphone and inputting them as reference signals; collecting residual noise after noise control by an error microphone and inputting them as error signals; fuzzy control The receiver receives the reference input signal and the error input signal. The adaptive FX-RBF network training algorithm based on the fuzzy neural network analyzes the reference signal and the error signal, and outputs the inverted target sound signal y[n] to the speaker and the main noise source noise. x[n] are superimposed. The active noise control based on the fuzzy neural network of the present invention has an obvious noise reduction effect on noise below 2000 Hz, and the noise reduction effect on low frequency noise below 1000 Hz is particularly remarkable.

Description

technical field [0001] The invention relates to noise control technology in the field of ships and ships, in particular to a method and system for actively controlling noise in a cab of a tank. Background technique [0002] Modern warfare pays more and more attention to the maneuverability of tanks. In the process of tank development, the engine power of tanks needs to be continuously improved. With the increase of engine power, the noise in the tank cabin is also increasing. The noise in the cabin seriously affects the working ability and physical and mental health of the tank crew, affecting the combat effectiveness of the troops. [0003] For the mechanical noise of the power system such as the engine and the transmission box, the noise generated by the interaction between the track and the ground, and the noise formed by the vibration of the vehicle body caused by the engine working, etc., are mostly concentrated in the low-to-medium frequency range. Traditional noise c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H7/03G10K11/178
CPCF41H7/03G10K11/178
Inventor 邢优胜
Owner 邢优胜
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