库尔勒香梨振动频谱特性研究  

Study on vibration spectrum characteristics of Korla pear fruit

作　　者：王曌鹏[1] 吴杰[1,2] 葛云[1,2] 孙慧杰[1] 

机构地区：[1]石河子大学机械电气工程学院,新疆石河子832003 [2]教育部绿洲特色经济作物生产机械化工程研究中心,新疆石河子832003

出　　处：《食品与机械》2012年第4期23-25,262,共4页Food and Machinery

基　　金：国家自然科学基金资助项目(编号:3116035);石河子大学高层次人才科研启动资金项目(编号:RCZX201124)

摘　　要：为了明确不同敲击条件对香梨振动响应特性的影响规律,采用DASP动态测试与信号分析系统对香梨敲击振动时的响应信号进行测量,并分析不同敲击材料、敲击速度、敲击位置、激励响应方式对香梨响应主频率影响的显著性。结果表明:橡胶球和铁球或木球敲击香梨时的响应主频差异显著(P=0.036),而硅胶球和橡胶球敲击香梨时的响应主频率无显著差异(P=0.300),硅胶球、铁球、木球敲击香梨时的响应主频率也无显著差异(P=0.140);敲击速度、敲击位置、激励响应方式对香梨的响应主频率无显著性影响(P>0.1)。In order to determine the effects of different impact condi- tions on the vibration response characteristics of Korla pear fruit, the response signal of impact vibration for Korla pear was measured u- sing DASP dynamic test system. Significance for effects of different impact materials, impact velocities, impact positions and impact re- sponse methods on dominant response frequency of Korla pear was analyzed. The results showed that the difference of the dominant re- sponse frequency was significant with Korla pears impacted by rubber ball and iron ball or wooden ball （P= 0. 036）, but the difference of the dominant response frequency was not significant with Korla pears impacted by rubber ball and silica ball （P--0. 300） and the difference of the dominant response frequency was not significant with Korla pears impacted by silica ball, iron ball and wooden ball （P〈0. 140）. Effects of impact velocity, impact position and impact response methods on the dominant response frequency were not significant （P〈O. 1）.

关 键 词：库尔勒香梨 振动 响应主频率 

分 类 号：S661.2[农业科学—果树学]