用波尔共振仪研究受迫振动特性  

Research of Force Vibration Characteristics Based on Pohl Resonator

作　　者：朱华泽[1] 

机构地区：[1]西安科技大学,陕西西安710054

出　　处：《大学物理实验》2011年第3期57-60,共4页Physical Experiment of College

基　　金：国家自然科学基金资助项目(10947124);西安科技大学培育基金资助项目(200850)

摘　　要：介绍了波尔共振仪实验系统的基本结构及原理,测定了幅频和相频特性曲线,分析了实验系统误差。研究发现,当系统发生共振时,驱动频率和固有频率近似相等且相位差为90°。The basic structure and theory of Pohl resonator were introduced. Phase-frequency and amplitude-frequency characteristics were measured, and found that when the resonance of the system appeared, drive-frequency is almost equal to inherency-frequency, and phasic angle margin is equal to 90°. Finally, system error was analyzed.

关 键 词：受迫振动 波尔共振仪 相频特性 幅频特性 

分 类 号：O321[理学—一般力学与力学基础]