用硬盘驱动器音圈电机演示节拍现象和利萨如斯数字

Q3 Social Sciences

Physics Education Pub Date : 2024-07-18 DOI:10.1088/1361-6552/ad5eec

Lian Hu

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引用次数: 0

摘要

机械硬盘驱动器中的音圈电机（VCM）因其独特的结构和运动方式，可用作由交变信号驱动的可调式电动音叉。VCM 组件经过改装，可以拉动激光或反射镜，实现相位可调的简谐运动（SHM）。利用传统音叉进行主动振动的利萨如斯（Lissajous）实验可在激光和可滚动磷光屏幕的帮助下通过 VCM 实现。分析了使用双振荡镜方法演示节拍和利萨如斯数字。VCM 不仅能驱动反射镜，还能驱动激光器或另一个 VCM 组件。基于这种承载能力，我们提出了单振荡镜的演示方法。此外，一个 VCM 可以支持另一个带激光器的 VCM，这将更直观地展示两个旋转 SHM 的组成。新方法有利于学生从新的角度理解和练习 SHM 的组成。

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Demonstrating beat phenomenon and Lissajous figures with hard disk drive voice-coil motors

Voice coil motors (VCMs) in mechanical hard disk drives can be used as the adjustable-electric tuning fork driven by alternating signals due to their unique structure and movement. The VCM component is modified to pull the laser or mirror for phase-adjustable simple harmonic motion (SHM). Lissajous experiments using the traditional tuning fork for active vibration can be achieved by VCMs with the help of a laser and a scrollable phosphorescent screen. The demonstrations of beat and Lissajous figures with the double oscillating mirrors method are analysed. The VCM can not only drive the mirror but also drive the laser or another VCM component. Based on this carrying capacity, the demonstration method of a single oscillating mirror has been proposed. Furthermore, one VCM can support another with a laser, which will exhibit the composition of two rotary SHMs more intuitively. The new method is beneficial for students to understand and practice the composition of SHMs from a new perspective.

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来源期刊

Physics Education Social Sciences-Education

CiteScore

1.50

自引率

0.00%

发文量

195

期刊介绍： Physics Education seeks to serve the physics teaching community and we welcome contributions from teachers. We seek to support the teaching of physics to students aged 11 up to introductory undergraduate level. We aim to provide professional development and support for teachers of physics around the world by providing: a forum for practising teachers to make an active contribution to the physics teaching community; knowledge updates in physics, educational research and relevant wider curriculum developments; and strategies for teaching and classroom management that will engage and motivate students.