修枝机刀片系统的噪声试验与仿真研究  

Experimental and Simulation Study on the Noise in the Trimmer Blade System

作　　者：张波[1] 陈希良 黄迪山[1] Zhang Bo;Chen Xiliang;Huang Dishan

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《计量与测试技术》2018年第8期1-3,共3页Metrology & Measurement Technique

基　　金：宁波市产业技术创新重大专项(No.2015B11031)

摘　　要：本文是针对某企业修枝机的刀片系统的噪声辐射研究。在准确的动力学模型基础上,首先测试得到加速度和噪声信号。通过载荷识别,以刀片表面测得的加速度信号反求得到激励力,然后求解力响应,再计算声辐射响应。把仿真结果与测试结果进行对比分析,仿真的主频误差小于5%,声压级误差小于15%,且仿真和测试的频谱趋势有较好一致性。研究表明:基于试验的刀片系统噪声预测方案是可行的。In this paper,a trimmer blade system noise radiation is analysized by experimental and simulation. First,we get the accurate dynamic model,and using the load identification function and the signals of the acceleration,the excitation force is calculated. Second,the force response is calculated,then,the acoustic radiation response is calculated. Comparing the simulation results with the test results,the frequency error is less than 5%,and the sound pressure level error is less than 15%,and the sound spectrum trend of simulation and test is consistent. So the experimental-based noise prediction method of trimmer blade system is feasible.

关 键 词：噪声辐射 载荷识别 修枝机 试验和仿真 

分 类 号：TB53[理学—物理]