固体内耗仪测控系统的改进设计  

A Redesigning of the Interal Friction Measurement Instrument

作　　者：丁喜冬[1] 龚康[1] 熊小敏[1] 薛淑军[2] 张进修[1] 

机构地区：[1]中山大学物理学系,广东广州510275 [2]中山大学电子机械研究中心,广东广州510275

出　　处：《中山大学学报（自然科学版）》2000年第6期30-34,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：教育部重点基金资助项目!( 990 95)

摘　　要：对传统的固体内耗仪进行了改进 .主要通过对测控系统的重新设计 ,使测量频率范围达到 1× 10 - 4～ 5× 10 2 Hz ,变频精度达到 0 0 5% ;内耗测量精度提高到 3× 10 - 5,同时消除了原测量方法所带来的系统误差 ;实现了主控计算机系统的升级 .为扩展内耗的研究范围 。An improvement of the interal friction measurement instrument is discussed.By redesigning the activating and measuring system, the measuring frequency ranges from 1×10\+\{-4\} Hz to 5×10\+2 Hz, while the frequence accuracy is better than 0 05%;the measuring precision of the new instrument is better than 3×10\+\{-5\}, and the system error in the old measuring device has been avoided; the supervisor computer has been upgraded. It provides a tool to extend the research field of interal friction and to investigate the vibrational resonant spectrum of condensed matter.

关 键 词：固体内耗仪 测控系统 测量频率 机械振动 设计 

分 类 号：TH113.1[机械工程—机械设计及理论] TP216[自动化与计算机技术—检测技术与自动化装置]