The invention discloses a road surface recognition noise reduction method and a hybrid electric vehicle. The method comprises the following steps that the flatness of a running road surface is obtained; obtaining the size of noise generated by the tire according to the flatness; and whether a control signal for switching automobile driving is output or not is judged according to the noise. According to the method, firstly, the flatness of the road surface on which the automobile runs is obtained, the function of judging whether the road surface is flat or not or whether the road surface is hollow or not is achieved, so that the noise generated by the road surface flatness on tires is judged, and finally automobile driving is switched according to the noise judgment result. When the tire noise caused by bumpiness of the road surface is large, the automobile drive with the large noise can be switched, so that the noise of the automobile drive can be covered by the road surface noise/tire noise, the effect of reducing the influence of the noise on people is achieved, and noise reduction is achieved; on the contrary, when the tire noise caused by the bumpy road surface is small, the automobile with the small noise is switched for driving.
本发明公开了路面识别降噪方法和混合动力汽车,方法包括以下步骤:获取正在行驶的路面的平整度;根据所述平整度获取轮胎产生的噪音大小;根据所述噪音大小判断是否输出切换汽车驱动的控制信号。本发明首先获取正在行驶的路面的平整度,其作用是判断路面是否平整、或者是路面是否有坑洼,从而判断出路面平整度对轮胎产生的噪音大小,最后利用噪音判断结果去切换汽车驱动。当路面颠簸造成的轮胎噪音较大时,可以切换噪音较大的汽车驱动,使得路面噪音/轮胎噪音可以掩盖该汽车驱动的噪音,达到“减少噪音对人的影响”的效果,即实现降噪;反之同理,当路面颠簸造成的轮胎噪音较小时,切换噪音较小的汽车驱动。
Road surface recognition noise reduction method and hybrid electric vehicle
路面识别降噪方法和混合动力汽车
2022-04-12
Patent
Elektronische Ressource
Chinesisch
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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