Abstract: With the development of new energy vehicle, the market share of hybrid electric vehicle (HEV) is gradually increasing. In order to solve the acceleration sound quality of HEV, firstly, the objective test results of inner ear noise of drivers in vehicle are taken as the research object, a unary linearity regression model based on linearity degree sound quality is established. The correlation between hybrid vehicle control strategy and noise, vibration, harshness (NVH) is analyzed. Then a NVH improvement plan is proposed, and the influence of control strategy on the linearity degree of noise inside the vehicle is studied. Finally, a B-class HEV car interior noise linearity degree optimization is taken as an example to verify the effectiveness of the strategy optimization to improve the interior noise linearity degree. This method has a short verification cycle and low cost,and is more suitable for hybrid models compared with optimization schemes such as traditional physical structure and acoustic package.

Key words: HEV; control strategy; acceleration vehicle inside noise; linearity degree; regression analysis

摘要： 随着新能源汽车的发展，混合动力汽车（HEV）市场占有率逐步提升。为了解决 HEV 加速声品质问题，首先，以车内驾驶员内耳噪声客观试验结果为研究对象，建立了一种基于 线性度的声品质一元线性回归模型，分析了 HEV 控制策略与噪声、振动与声振粗糙度（NVH） 的关联性；然后提出 NVH 改进方案，研究了控制策略对车内噪声线性度的影响；最后，以某 HEV B 级混动轿车车内噪声线性度优化为例，验证了策略优化对车内噪声线性度改善的有效 性。这种方法验证周期短、成本低，与传统物理结构和声学包裹等优化方案相比，更加适用 混合动力车型。

关键词: HEV；控制策略；加速车内噪声；线性度；回归分析