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関連する概念動画

Displacement Current01:19

Displacement Current

3.8K
Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
3.8K
Position and Displacement01:31

Position and Displacement

27.1K
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
27.1K
Encoding01:19

Encoding

875
Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
875
Position and Displacement Vectors01:00

Position and Displacement Vectors

13.9K
To describe the motion of an object, one should first be able to describe its position (where it is at any particular time). More precisely, the position needs to be specified relative to a convenient frame of reference. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference to describe the position of an object in relation to stationary objects on Earth.
Further, several important kinds of...
13.9K
Significance of Displacement Current01:27

Significance of Displacement Current

6.0K
A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.
6.0K
Angular Velocity and Displacement01:08

Angular Velocity and Displacement

22.9K
Uniform circular motion is motion in a circle at a constant speed. Although this is the simplest case of rotational motion, it is very useful for many situations and is used to introduce rotational variables. When a particle is moving in a circle, the coordinate system is fixed and serves as a frame of reference to define the particle’s position. Its position vector from the origin of the circle to the particle sweeps out the angle θ, which increases in the counterclockwise direction...
22.9K

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関連する実験動画

Updated: Feb 14, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

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

Published on: September 30, 2019

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線形移動測定のためのミニチュアインダクティブエンコーダー

Wei Xiong1,2, Shouhao Wang1,2, Yajun Ma1,2

  • 1Beijing Institute of Precise Mechanical and Electronic Control Equipment, Beijing 100076, China.

Sensors (Basel, Switzerland)
|February 13, 2026
PubMed
まとめ

この研究では,コンパクトな空間での正確な測定のためのミニチュア化された線形インダクティブエンコーダーを導入します. 新型エンコーダーは,最小の寸法で高い精度 (12.8μm) と解像度 (0.7μm) を達成しています.

キーワード:
エディ・ストリーム エディ・ストリームインダクティブエンコーダー (インダクティブエンコーダー)線形移位による直線的な移位です.平面コイルは平面コイルです.

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Assay for Neural Induction in the Chick Embryo
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Assay for Neural Induction in the Chick Embryo

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Optimization, Test and Diagnostics of Miniaturized Hall Thrusters
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Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

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関連する実験動画

Last Updated: Feb 14, 2026

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

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Assay for Neural Induction in the Chick Embryo
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科学分野:

  • * 電気工学について
  • * 機械工学について
  • * センサー技術について

背景:

  • * 物体の正確な測定は,ますますコンパクトで制約された環境において極めて重要です.
  • * 既存の線形エンコーダは,サイズや狭いメカニズム内の統合の制限にしばしば直面する.
  • * センサーコンポーネントの小型化は,現代の工学における重要な課題です.

研究 の 目的:

  • * 精密な位移量測定のための小型化された線形誘導エンコーダの調査と開発.
  • * コンパクトなフォームファクター内で高い精度と解像度を達成するために.
  • *高度に制限された機械システムへの統合を可能にします.

主な方法:

  • * 導電板付きの移動部分とコイル付きの固定部分を統合した線形インダクティブエンコーダーの設計.
  • *高周波の交流電流を利用して,時間変動の磁場と渦流を生成する.
  • * 振幅調節信号から位移を計算するためにCORDICアルゴリズムを使用.

主要な成果:

  • * 20 mm × 10 mm × 1 mm の寸法を持つプロトタイプエンコーダーは,PCB技術を使用して製造されました.
  • * 1ピッチで12.8μmの測定精度と0.7μmの解像度を達成しました.
  • * 安定性と精度が実証されており,要求の高いアプリケーションに適しています.

結論:

  • * ミニチュア化された線形インダクティブエンコーダーは,コンパクトな環境で正確な測定を行うための実行可能なソリューションです.
  • * 小さいサイズと高い性能により,制限されたメカニズムに統合するのに適しています.
  • *さらなる開発により,マイクロロボティクスや精密計器の分野での応用が拡大できる.