Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Noise reduction method of engineering machinery and engineering machinery
The invention discloses a noise reduction method of engineering machinery and the engineering machine. The noise reduction method of the engineering machinery comprises the steps that the rotating speed of an engine is obtained, if the rotating speed changes, noise data at the current moment are obtained, and the theoretical engine noise frequency and the theoretical derivative noise frequency arecalculated according to the rotating speed; pre-engine noise and pre-derivative noise are generated according to the theoretical engine noise frequency and the theoretical derivative noise frequency,the noise data are sampled, amplitudes and phases of the pre-engine noise and the pre-derivative noise are determined according to sampling values, and noise suppression data are synthesized according to the pre-engine noise and the pre-derivative noise. The amplitudes of the noise suppression data are the same as those of the noise data, and the noise suppression data and the noise data are inverted.
本发明公开了一种工程机械降噪方法及工程机械，工程机械降噪方法包括：获取发动机的转速，若转速发生变化，则获取当前时刻的噪声数据，根据转速计算理论发动机噪声频率以及理论衍生噪声频率，根据理论发动机噪声频率和理论衍生噪声频率生成预发动机噪声以及预衍生噪声，对噪声数据进行采样，根据采样值确定预发动机噪声以及预衍生噪声的幅值及相位，根据预发动机噪声以及预衍生噪声合成噪声抑制数据，其中，噪声抑制数据的幅值与噪声数据相同，噪声抑制数据与噪声数据反相。
Noise reduction method of engineering machinery and engineering machinery
The invention discloses a noise reduction method of engineering machinery and the engineering machine. The noise reduction method of the engineering machinery comprises the steps that the rotating speed of an engine is obtained, if the rotating speed changes, noise data at the current moment are obtained, and the theoretical engine noise frequency and the theoretical derivative noise frequency arecalculated according to the rotating speed; pre-engine noise and pre-derivative noise are generated according to the theoretical engine noise frequency and the theoretical derivative noise frequency,the noise data are sampled, amplitudes and phases of the pre-engine noise and the pre-derivative noise are determined according to sampling values, and noise suppression data are synthesized according to the pre-engine noise and the pre-derivative noise. The amplitudes of the noise suppression data are the same as those of the noise data, and the noise suppression data and the noise data are inverted.
本发明公开了一种工程机械降噪方法及工程机械，工程机械降噪方法包括：获取发动机的转速，若转速发生变化，则获取当前时刻的噪声数据，根据转速计算理论发动机噪声频率以及理论衍生噪声频率，根据理论发动机噪声频率和理论衍生噪声频率生成预发动机噪声以及预衍生噪声，对噪声数据进行采样，根据采样值确定预发动机噪声以及预衍生噪声的幅值及相位，根据预发动机噪声以及预衍生噪声合成噪声抑制数据，其中，噪声抑制数据的幅值与噪声数据相同，噪声抑制数据与噪声数据反相。
Noise reduction method of engineering machinery and engineering machinery
一种工程机械降噪方法及工程机械
ZHAO WEIDONG (Autor:in) / YU SONGSONG (Autor:in) / CHEN JIANGFEI (Autor:in) / LI DEXI (Autor:in)
02.02.2021
Patent
Elektronische Ressource
Chinesisch
Noise reduction device for constructional engineering machinery
| Europäisches Patentamt | 2023
Engineering machinery control method and engineering machinery
| Europäisches Patentamt | 2023
Method for operating engineering machinery and engineering machinery
| Europäisches Patentamt | 2022
Engineering machinery switching device and engineering machinery
| Europäisches Patentamt | 2024
Engineering machinery control system and engineering machinery
| Europäisches Patentamt | 2024