Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

3.7K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
3.7K
One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

435
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
435
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

3.1K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process,...
3.1K
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

2.3K
Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
2.3K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

4.2K
Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
4.2K
Electro-mechanical Systems01:19

Electro-mechanical Systems

876
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
876

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Design, Modeling, and Fabrication of a High-Q AlN Annular Gyroscope with Sub-10°/h Bias Instability.

Micromachines·2026
Same author

Temperature drift suppression and measurement dead zone elimination in differential MEMS resonant accelerometers using dual-mode operating method.

Microsystems & nanoengineering·2025
Same author

A Mode-Localized Micro-Electromechanical System Accelerometer with Force Rebalance Closed-Loop Control.

Micromachines·2025
Same author

Design, Fabrication and Characterization of Disk Resonator Gyroscope with Vibration and Shock Resistance.

Sensors (Basel, Switzerland)·2024
Same author

Bridging piezoelectric and electrostatic effects: a novel piezo-MEMS pitch/roll gyroscope with sub 10°/h bias instability.

Microsystems & nanoengineering·2024
Same author

MEMS reservoir computing system with stiffness modulation for multi-scene data processing at the edge.

Microsystems & nanoengineering·2024

相关实验视频

Updated: May 10, 2025

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.2K

两度自由度同步运动调制技术使用MEMS电压控制的振荡器为基础的相锁循环用于磁电阻传感.

Zhenyu Shi1,2, Zhenxiang Qi1,2, Haoqi Lyu1,2

  • 1State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China.

Sensors (Basel, Switzerland)
|April 28, 2025
PubMed
概括

一个新的双相锁定循环二维同步运动调制 (TDSMM-DPLL) 系统显著降低了磁电阻传感器中的1 / f噪声. 这项创新增强了低频探测能力,用于高精度的磁场传感.

关键词:
在MEMS中使用的磁电阻传感器.磁场运动调制磁场运动调制阶段锁定循环电路的循环循环.同步技术是同步技术.

更多相关视频

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.0K
A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
00:08

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

6.2K

相关实验视频

Last Updated: May 10, 2025

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators
11:44

Real-Time DC-dynamic Biasing Method for Switching Time Improvement in Severely Underdamped Fringing-field Electrostatic MEMS Actuators

Published on: August 15, 2014

10.2K
Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
08:01

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures

Published on: November 21, 2019

7.0K
A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
00:08

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

6.2K

科学领域:

  • 传感器技术 传感器技术
  • 物理 物理学 物理
  • 电气工程 电气工程

背景情况:

  • 1/f 噪声显著限制了磁电阻 (MR) 传感器的低频性能.
  • 传统的调制技术很难有效地减轻这种噪音.
  • 高精度磁场检测需要先进的降噪策略.

研究的目的:

  • 引入一种新的双相锁环二维同步运动调制 (TDSMM-DPLL) 系统.
  • 为了提高MR传感器的低频探测能力.
  • 为了有效地减轻MR传感器系统中的1/f噪声.

主要方法:

  • 一个子驱动的共振器和一个压电悬臂光束共振器的集成.
  • 使用双相锁定循环 (DPLL) 电路进行同步磁场调制.
  • 将驱动共振器的共振频率调整为悬臂束共振器的两倍.

主要成果:

  • 实现了38.98%的调制效率,超过了传统的单维方法.
  • 显示频率艾伦变异减少了3.13倍 (从217.32ppb降至69.46ppb).
  • 通过理论分析,模拟和实验验证,证实了大量的噪声抑制.

结论:

  • 该TDSMM-DPLL系统有效地抑制了MR传感器中的1 / f噪声.
  • 该系统显著提高了低频检测能力.
  • 这种新的方法为高精度磁场检测应用提供了一个有前途的解决方案.