Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Second Order systems II01:18

Second Order systems II

427
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
427
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

415
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
415
Types of Damping01:20

Types of Damping

7.8K
If the amount of damping in a system is gradually increased, the period and frequency start to become affected because damping opposes, and hence slows, the back and forth motion (the net force is smaller in both directions). If there is a very large amount of damping, the system does not even oscillate; instead, it slowly moves toward equilibrium. In brief, an overdamped system moves slowly towards equilibrium, whereas an underdamped system moves quickly to equilibrium but will oscillate about...
7.8K
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

379
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
379
Damped Oscillations01:07

Damped Oscillations

7.4K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
7.4K
Forced Oscillations01:06

Forced Oscillations

8.1K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
8.1K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Redox-inactive metal ions promoted the catalytic reactivity of non-heme manganese complexes towards oxygen atom transfer.

Dalton transactions (Cambridge, England : 2003)·2015
Same author

A reliable, high-resolution and high-throughput genotyping method for HLA-DRB1.

Human immunology·2015
Same author

Implicit processing of heroin and emotional cues in abstinent heroin users: early and late event-related potential effects.

The American journal of drug and alcohol abuse·2015
Same author

Expression and methylation of DNA repair genes in lens epithelium cells of age-related cataract.

Mutation research·2015
Same author

Rapid detection and identification of infectious pathogens based on high-throughput sequencing.

Chinese medical journal·2015
Same author

Synchrotron-based and globar-sourced molecular (micro)spectroscopy contributions to advances in new hulless barley (with structure alteration) research on molecular structure, molecular nutrition, and nutrient delivery.

Critical reviews in food science and nutrition·2015

関連する実験動画

Updated: Feb 21, 2026

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
06:45

Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

2.2K

参照振動に基づくOFDRシステムの時間変動非線形エラーのダイナミック補償法

Mengyuan Huo, Tong Xing, Ling Yang

    Optics express
    |February 20, 2026
    PubMed
    まとめ

    本研究では,分散光学周波数領域反射計 (OFDR) の時分解像度エラーを修正するために,参照振動信号を用いたダイナミック・カリブレーション・メソッドを導入しています. この新しい技術は,振動周波数測定の精度を大幅に改善します.

    科学分野:

    • オプトエレクトロニクス (光電子機器)
    • シグナル処理 信号処理

    背景:

    • 分散光学周波数領域反射測定法 (OFDR) は,レーザースキャンの非線形性による時間解像度偏差に直面しています.
    • OFDRにおけるハードウェア補償は,非線形によって影響を受け,測定精度に影響を与える可能性があります.

    研究 の 目的:

    • 時間の解像度偏差を修正するために,OFDRのダイナミック・カリブレーション・メソッドを開発する.
    • OFDRシステムにおける振動周波数測定の精度を高めるために.

    主な方法:

    • 高安定性基準振動源は,試験中のファイバー (FUT) に統合されました.
    • 測定周波数,理論周波数,およびシステムの時間解像度をリンクするための数学的モデルが確立されました.
    • 動的時間解像度の校正のために,参照振動周波数比に基づく時間校正因子を導入した.

    主要な成果:

    • 提案された方法は,時間軸の歪みによって引き起こされる周波数測定エラーを効果的に抑制します.
    • 周波数測定の誤差は10-120Hzの範囲で0.56%に減少しました.
    • これは,事前校正エラーよりも1次元の大きさに低い,重要な改善を表しています.

    結論:

    さらに関連する動画

    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

    10.8K
    Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
    09:01

    Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

    Published on: April 4, 2017

    9.1K

    関連する実験動画

    Last Updated: Feb 21, 2026

    Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
    06:45

    Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

    Published on: October 28, 2022

    2.2K
    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

    10.8K
    Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques
    09:01

    Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

    Published on: April 4, 2017

    9.1K
    • ダイナミック・カリブレーション・メソッドは,OFDRにおける周波数エラー補償のための効果的なソリューションを提供します.
    • この技術は,振動周波数測定の精度を大幅に高めます.
    • この方法は,構造的健康モニタリングと精密器具診断において広範な応用がある.