任 培， 袁中凡
（四川大學制造科學與工程學院，四川 成都 610065）
摘 要：介紹了一種新的利用三線擺測量轉動慣量的系統及方法，該方法采用傳感器和數據采集裝置采集計算轉動慣量所需的周期信號和力信號；并通過開發出專門的軟件，最終計算出待測物體的轉動慣量。該方法將機械裝置與電子部件和計算機相結合，與原有的傳統測量方法相比，避免了手動操作和人工計算，方便實用，能夠對大型剛體進行測量；整個過程趨于自動化，提高了測量精度和效率。
關鍵詞：三線擺；轉動慣量；傳感器；采樣；軟件
中圖分類號：TP271+.4 文獻標識碼：A 文章編號：1672-4984（2007）01-0037-03
Development moment of inertia measuring system
REN Pei， YUAN Zhong-fan
（College of Manufacturing Science and Engineering，Sichuan University，Chengdu 610065，China）
Abstract:This paper introduced a new three-line pendulum system and method to measure moment of inertia.In this system，sensors and data collecting equipment were used to collect periodic signal and force signal，while special software was developed to calculate the moment of inertia.This method combined mechanical equipment with electronic and computer.Compared with existing method，this one avoids manual operation and calculation and is practical and convenient.It can be used to measure good-sized rigid body.The whole process tends to be automatic with improvement in precision and efficiency.
Key words：Three-line pendulum；Moment of inertia；Sensor；Sample；Software
