Car active noise reduction method based on heuristic dynamic programming

A dynamic programming algorithm and dynamic programming technology, applied in active noise control, sound-generating equipment, vehicle components, etc., can solve the problem that real driving conditions with multiple seats cannot be effectively applied, and the active noise reduction method cannot meet the arbitrary adjustment of the noise reduction area of ​​high-end vehicles Problems such as setting requirements and being unable to form an offline noise reduction expert database
CN107791970AActive Publication Date: 2018-03-13长春一汽四环汽车管路有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
长春一汽四环汽车管路有限公司
Publication Date
2018-03-13

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Abstract

The invention discloses a car active noise reduction method based on heuristic dynamic programming, and belongs to the field of active noise reduction methods of noise in car rooms. According to the car active noise reduction method, massive data in a large database of noise information in a virtual environment of a cloud server are initiatively fitted, the rule of noise frequency spectrum characteristics in the database is looked for through a model network and an execution network trained by heuristic dynamic programming, the noise data with the similar frequency spectrum characteristics arefitted together, an off-line expert library having the less data size and reduced and generated from a huge database is established, so that optimization of the noise data is achieved, and the optimal control quantity is provided for a system. According to the innovative mode, the method can overcome the drawback that an existing car active noise reduction method needs to conduct one-by-one real-time operation on the massive data, and through practical testing, the method can fully meet requirements of noise reduction of an actual traffic car under a real road condition, so that the car active noise reduction method has great market prospect and potential economic value.
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Description

technical field

[0001] The invention belongs to the field of active noise reduction methods for vehicle interior noise, and in particular relates to a vehicle active noise reduction method based on heuristic dynamic programming. Background technique

[0002] Active noise reduction technology has attracted people's attention because of its ability to effectively reduce low-frequency noise, and has been gradually applied in reducing low-frequency noise. The principle of active noise reduction is to identify and analyze the noise source signal, and then generate an artificial noise reduction and noise reduction signal with the same amplitude and frequency and opposite direction as the noise source signal through an electro-acoustic system that can generate artificial noise reduction noise. The artificial noise reduction and silencing signal is superimposed with the noise source signal to realize the cancellation of the source noise.

[0003] The propagation of sound in the air...

Claims

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