1． School of Physics，Hefei University of Technology，Xuancheng 242000，China;2． Department of Materials Science and
Engineering，Hefei University of Technology，Xuancheng 242000，China;3． Department of Mechanical Engineering，Hefei
University of Technology，Xuancheng 242000，China;4． Academic Affairs Office Hefei University of Technology，Xuancheng
242000，China
Abstract: To solve the low precision，poor stability and complex operation of traditional setups，this study
designs a novel string vibration device based on Ampere force drive and the standing wave method．By replacing
mechanical vibration sources with electromagnetic drive and integrating high-precision tension sensors and
automatic data acquisition systems，the device realizes continuous tension adjustment，wide-range frequency
control and accurate force-positioning．Experiments verify the quantitative relationships between string vibration
frequency and tension square root，string length reciprocal as well as linear density reciprocal square root，with
low-frequency fundamental frequency and wave velocity errors generally ＜1% and high-frequency resonance
recognition errors controlled within 2% via SPL burst criteria and spectrum analysis． With a user-friendly
interactive interface，the device is suitable for university physics teaching and provides an extensible platform
for engineering vibration analysis．
王雅萍, 尹渝中, 刘子昂, 丁志鹏 . 基于安培力与驻波法的弦振动实验装置设计与应用[J]. 大学物理实验, 2026, 39(2): 88-94.
WANG Yaping , YIN Yuzhong , LIU Ziang , DING Zhipeng . Design and Application of String Vibration Experimental Device Based on Ampere Force and Standing Wave Method#br#. Physical Experiment of College, 2026, 39(2): 88-94.
