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A Mixed Signal Separation Method Based on Dynamic Evolutionary Particle Swarm Masking Emd

A technology of mixing signals and shielding signals, which is applied in the field of signal processing, can solve the problems of increased calculation and complexity of algorithms, and achieve the effect of solving mode aliasing, speeding up particle search speed, and good signal separation effect

Active Publication Date: 2022-07-26
东北大学秦皇岛分校
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Problems solved by technology

However, since the chaotic particle swarm algorithm needs to generate chaotic vectors, and then further operate on the chaotic vectors, the calculation amount and complexity of the algorithm will increase to a certain extent.

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  • A Mixed Signal Separation Method Based on Dynamic Evolutionary Particle Swarm Masking Emd
  • A Mixed Signal Separation Method Based on Dynamic Evolutionary Particle Swarm Masking Emd
  • A Mixed Signal Separation Method Based on Dynamic Evolutionary Particle Swarm Masking Emd

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Embodiment Construction

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Embodiments of the present invention:

[0028] A mixed-signal separation method based on dynamically evolving particle swarm masking EMD, such as figure 1 shown, including the following steps:

[0029] S1, use the wireless measuring instrument to collect the mixed signal of the sound of the three devices, let s(t) be the single-channel mixed signal at time t, and the mixed signal s(t) is mixed with the sound and noise of the three devi...

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Abstract

The invention belongs to the technical field of signal processing, and in particular relates to a mixed signal separation method based on dynamic evolution particle swarm shielding EMD. The method steps are: S1, use a wireless measuring instrument to collect the sound of several devices, and obtain a single signal at time t. Channel mixed signal s(t); S2, use the EMD method to decompose the mixed signal s(t) to obtain the imf signal, and use the imf signal to initialize the amplitude A and frequency f of the shielded signal; S3, through the dynamic evolution based particle swarm shielding The mixed signal separation method of EMD uses the dynamic evolution particle swarm to optimize the particles, and then realizes the optimization of the amplitude A and frequency f of the shielded signal, and then constructs the shielded signal through the optimized amplitude A and frequency f, and analyzes the mixed signal. s(t) is used for separation; S4, the fourth-order cumulant of the signal is calculated, and the effect of signal separation is analyzed. The method can be applied to blind source separation such as mixed sound signal separation, mixed vibration signal separation, and harmonic decomposition.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a mixed signal separation method based on dynamic evolution particle swarm shielding EMD. Background technique [0002] With the development of social science and technology, various equipments gradually tend to be structurally integrated, functionally diversified, etc. This trend is conducive to reducing energy consumption, improving production efficiency and ensuring product quality in the process of industrial production. Equipment is the core of industrial production, and the current production process is generally an assembly line operation. If the equipment fails, it will have a huge impact on the entire production process. In order to effectively reduce unnecessary losses in the production process, the equipment can be inspected regularly to find problems and repair the equipment. The device voiceprint can be used to determine whether the device is f...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L21/0272G10L21/0308G10L21/0208G06N3/00
CPCG10L21/0272G10L21/0308G10L21/0208G06N3/006
Inventor 刘福来徐嘉良杜瑞燕张艾怡黄彩梅胡忠意
Owner 东北大学秦皇岛分校
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