摘要
液压泵在运行过程中产生的噪声严重影响操作者的身心健康。为研究不同转速工况对其辐射噪声声品质的影响,基于响度、尖锐度、粗糙度与语言清晰度四项心理声学参数,构建了适用于定转速与变转速工况的液压泵声品质复合评价指标。利用半球面测量法,在半消声室中对液压泵进行了定转速与变转速噪声测试,分析并对比了不同工况下心理声学参数及声品质指标的变化规律。试验结果表明:转速升高,声品质复合评价指标呈波动恶化趋势;变转速变化速率对心理声学参数影响较小;定转速工况的响度、尖锐度及总声能量在高转速区间均低于在相同转速时刻的变转速工况下的值;同时液压泵声品质复合评价指标在高转速区间下呈现更强的波动性,且波动幅度随转速增大而加剧。上述研究成果为液压泵运行工况优化与噪声控制策略提供了理论支持与评价依据。
The noise generated during the operation of hydraulic pumps seriously affects the physical and mental health of operators.To study the influence of different rotational speed conditions on the sound quality of their radiated noise,a composite evaluation index for the sound quality of hydraulic pumps suitable for constant-speed and variable-speed conditions is constructed,which is based on four psychoacoustic parameters:loudness,sharpness,roughness and articulation index.Using the hemispherical measurement method,constant-speed and variable-speed noise tests are conducted on the hydraulic pump in a semi-anechoic chamber.The variation laws of psychoacoustic parameters and sound quality indicators under different conditions are analyzed and compared.The experimental results show that as the rotational speed increases,the composite evaluation index shows a fluctuating deterioration trend.The change rate of variable-speed has a relatively small impact on the psychoacoustic parameters.In the high-speed range,the loudness,sharpness and total sound energy under constant-speed conditions are all lower than those under variable-speed conditions at the same rotational speed.At the same time,the composite evaluation index of the sound quality for hydraulic pumps shows stronger fluctuations in the high-speed range,and the fluctuation amplitude intensifies with the increase of rotational speed.The above research results provide theoretical support and evaluation basis for the optimization of hydraulic pump operating conditions and noise control strategies.
作者
叶绍干
杨博
徐兵
黄惠
罗经
鲍岳
YE Shaogan;YANG Bo;XU Bing;HUANG Hui;LUO Jing;BAO Yue(Pen-Tung Sah Institute of Micro-nano Science and Technology,Xiamen University,Xiamen,Fujian 361021;Slate Key Laboratory of Fluid Power Component&Mechatronic Systems,Zhejiang University,Hangzhou,Zhejiang 310058;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou,Fujian 350108;Beijing Research Institute of Automation for Machinery Industry Co.,Ltd.,Beijing 100120)
出处
《液压与气动》
北大核心
2025年第8期12-20,共9页
Chinese Hydraulics & Pneumatics
基金
国家重点研发计划(2022YFF1400203)。
关键词
液压泵
变转速
噪声评估
心理声学参数
声品质
hydraulic pump
variable-speed
noise assessment
psychoacoustic parameter
sound quality
