玉米收割机NVH问题研究——基于振动总量和A计权声音  

The NVH Phenomena Analysis in Corn Harvester——Based on Vibration Dose and A-meter-weight Noise

作　　者：周林[1] 张小超[1] 陈志[2] 梁学修[1] 

机构地区：[1]中国农业机械化科学研究院土壤-植物-机器系统技术国家重点实验室,北京100083 [2]中国机械工业集团有限公司,北京100080

出　　处：《农机化研究》2015年第12期245-250,共6页Journal of Agricultural Mechanization Research

基　　金：国家"863计划"项目(2013AA040401)

摘　　要：农业机械的舒适性已经严重制约了我国农业机械的进一步发展。为了改善农用车辆的NVH问题,参照国标GB/T 18697-2002和国际标准ISO 2631,成功搭建玉米收割机驾驶室的振动及噪声测量系统。同时,利用Mat Lab软件计算出振动总量和A计权声压级,得出该型号的玉米收割机的舒适性情况。田间试验表明:该测量系统工作正常、性能可靠,能够作为车载测量系统收集收割机实时工作状态,为构建玉米收割机NVH性能数据库系统和车身结构进一步改进奠定基础。To improve the ride comfort of Agricultural machinery , based on GB/T 18697-2002 and ISO 2631 , A vibra-tion and noise testing measurement system for corn harvester was established .By using MATLAB , the processing to ac-celeration time-history series were completed .vibration dose and A-meter-weight noise were chosen to evaluate the ride comfort , vibration dose is used to evaluate the vibration and A-meter-weight noise is used to evaluate the noise .Depen-ding on the two indexes , A final evaluation on the corn harvester was made and some improve guidance were given .

关 键 词：农业机械舒适性 振动总量 A计权声音 NVH 

分 类 号：S225.51[农业科学—农业机械化工程] S219.032.9[农业科学—农业工程]