Active noise control device used for range extending type electric automobile

Abstract

The invention relates to an active noise control device used for a range extending type electric automobile. The active noise control device comprises a signal acquisition and processing system, a reference signal generation system, a self-adaption active control system, a secondary sound source generation system, an error signal acquisition system and a range extender working mode judgment system. The signal acquisition and processing system comprises a frequency identification unit used for identifying the noise frequency needing to be controlled. The reference signal generation system selects the noise frequency needing to be controlled and generates reference signals according to signals output by the range extender working mode judgment system. Compared with the prior art, the active noise control device has the better noise suppression effect.

Description

technical field [0001] The invention relates to an active noise control device, in particular to an active noise control device for an extended-range electric vehicle. Background technique [0002] The noise inside the car mainly includes engine, motor and other power transmission system noise, tire, road noise, air noise, etc. At present, the noise control methods used in cars mainly include passive control and active control. Passive control is mainly realized by the principles of sound insulation and sound absorption. However, in today's increasingly demanding ride comfort, passive noise control often cannot meet customer needs. Therefore, active control methods for interior noise are becoming more and more popular. more attention. Compared with traditional vehicles, the power transmission system of extended-range electric vehicles has changed greatly. The traditional active control technology of interior noise does not consider the structural characteristics and working...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the existing active control technology of interior noise, such as single reference signal structure, complicated control algorithm, and unsatisfactory interior noise control effect in the range-extended electric vehicle, and to provide an enhanced noise reduction technology with obvious noise reduction effect. The active noise control device for range-extended electric vehicles is used to actively control the noise generated by the engine, motor and other power transmission systems in the cabin of extended-range electric vehicles

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