Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Control Systems: Applications

Control Systems: Applications

Electrical engineering plays a pivotal role in our daily lives, with control systems at the heart of many applications, from home appliances to sophisticated space shuttles. Control systems manage and regulate the behavior of devices and processes, ensuring they function safely, correctly, and efficiently.
In modern vehicles, control systems manage various functions to enhance performance and safety. The steering wheel and accelerator are primary inputs in a car's control system. The direction...

Control of Power Flow

Control of Power Flow

There are several methods to control power flow in power systems:

Electrical Systems

Electrical Systems

In electrical engineering, the analysis of networks composed of passive linear components — resistors (R), capacitors (C), and inductors (L) — is fundamental. These components are organized into circuits where the relationship between input and output can be analyzed using transfer functions. The transfer function of an RLC circuit, which relates the voltage across a capacitor to the input voltage, can be derived using Kirchhoff's laws.
To derive the transfer function, consider an RLC circuit...

Open and closed-loop control systems

Open and closed-loop control systems

Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal and...

Electro-mechanical Systems

Electro-mechanical Systems

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...

Time and frequency -Domain Interpretation of Phase-lag Control

Time and frequency -Domain Interpretation of Phase-lag Control

Phase-lag controllers are widely used in control systems to improve stability and reduce steady-state errors. A dimmer switch controlling the brightness of a light bulb serves as a practical example of phase-lag control, gradually adjusting the bulb's brightness. Mathematically, phase-lag control or low-pass filtering is represented when the factor 'a' is less than 1.
Phase-lag controllers do not place a pole at zero, but instead influence the steady-state error by amplifying any finite,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Maximum bite force at age 70 years predicts all-cause mortality during the following 13 years in Japanese men.

Journal of oral rehabilitation·2016

Same author

Longitudinal relationship of severe periodontitis with cognitive decline in older Japanese.

Journal of periodontal research·2016

Same author

Lymphangiography by radiological methods.

The Journal of the Faculty of Radiologists. Faculty of Radiologists (Great Britain)·2014

Same author

Self-reported measures for surveillance of periodontitis.

Journal of dental research·2013

Same author

Serum antibody to Porphyromonas gingivalis in chronic kidney disease.

Journal of dental research·2012

Same author

Relations of serum ascorbic acid and α-tocopherol to periodontal disease.

Journal of dental research·2011

Search research articles

Related Experiment Video

Updated: Jun 16, 2026

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

Electrical control of light by fluid logic devices.

|February 4, 2010

Summary

Novel fluid logic-light control devices utilize electrically controlled fluid circuits to manipulate optical properties in transparent chambers. These devices offer design flexibility, efficient light control, and suitability for displays and laser applications.

Area of Science:

Optoelectronics
Fluidics
Materials Science

Background:

Traditional light control methods often face limitations in flexibility, cost, and integration.
The development of novel optical switching mechanisms is crucial for advanced display and laser technologies.

Purpose of the Study:

To introduce and characterize new fluid logic-light control devices.
To demonstrate the potential of these devices in various optical applications.

Main Methods:

Fabrication of photoformed fluid logic circuits.
Operation in a two-phase (water-air) mode.
Experimental evaluation of optical and switching properties.

Main Results:

Demonstrated great design flexibility and low-cost fabrication across various sizes.

More Related Videos

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Published on: September 7, 2018

Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms

Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms

Published on: March 3, 2023

Related Experiment Videos

Last Updated: Jun 16, 2026

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition

Published on: June 27, 2025

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Generation and Control of Electrohydrodynamic Flows in Aqueous Electrolyte Solutions

Published on: September 7, 2018

Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms

Automated Multimodal Stimulation and Simultaneous Neuronal Recording from Multiple Small Organisms

Published on: March 3, 2023

Achieved good light transmission efficiency and high optical contrast ratio over wide angles.

Exhibited reliable performance, uniformity, reasonable switching speed, and a true switching threshold.

Conclusions:

Fluid logic-light control devices offer a versatile platform for optical manipulation.
Their properties make them suitable for displays, laser beam control, and optical system focusing.
The separation of electrical and optical functions allows for attractive device geometries.