Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Stability of Equilibrium Configuration: Problem Solving01:13

Stability of Equilibrium Configuration: Problem Solving

The stability of equilibrium configurations is an important concept in physics, engineering, and other related fields. In simple terms, it refers to the tendency of an object or system to return to its equilibrium position after being disturbed. The stability of an equilibrium configuration can be analyzed by considering the potential energy function of the system and examining its behavior near the equilibrium point.
Problem-solving in the context of the stability of equilibrium configuration...
Orthogonal Trajectories01:26

Orthogonal Trajectories

Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

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...
Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
Uniform Depth Channel Flow: Problem Solving01:18

Uniform Depth Channel Flow: Problem Solving

To calculate the flow rate for a trapezoidal channel, first, identify the bottom width, side slope, and flow depth of the channel. The cross-sectional area (A) corresponding to the depth of flow (y), channel bottom width (B), and side slope (θ) is determined by:Next, calculate the wetted perimeter, which includes the bottom width and the sloped side lengths in contact with the water. Using the values of the cross-sectional area and the wetted perimeter, determine the hydraulic radius by...
Statically Indeterminate Problem Solving01:16

Statically Indeterminate Problem Solving

Statically indeterminate problems are those where statics alone can not determine the internal forces or reactions. Consider a structure comprising two cylindrical rods made of steel and brass. These rods are joined at point B and restrained by rigid supports at points A and C. Now, the reactions at points A and C and the deflection at point B are to be determined. This rod structure is classified as statically indeterminate as the structure has more supports than are necessary for maintaining...

You might also read

Related Articles

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

Sort by
Same author

Boosting Ion Transport in MXene Films via In-Plane Nanopores and Embedded TiO<sub>2</sub> Nanoparticles: Toward Ultrafast Supercapacitors.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

A Factorized Low-Rank RNN Framework for Uncovering Independent Neural Latent Dynamics and Connectivity.

ArXiv·2026
Same author

<i>Arthrographis kalrae</i> presenting as an enlarging solitary pulmonary nodule.

Thorax·2026
Same author

Unraveling Bridging-Oxygen-Driven Ultrafast Amorphization in Superionic Oxyhalide Conductors via in Situ Synchrotron X-Ray Scattering.

Angewandte Chemie (International ed. in English)·2026
Same author

Tuning Reaction Pathways via Symmetric Fluorination Enables High-Temperature and High-Voltage Electrolytes.

Angewandte Chemie (International ed. in English)·2026
Same author

Plectosphaerella cucumerina fungal keratitis in an uncommon presentation.

Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases·2026

Related Experiment Video

Updated: May 8, 2026

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Event-triggered optimal line-of-sight formation control for underactuated USVs with unknown disturbance.

Weihan Li1, Lipeng Wang1, Zhi Zhang1

  • 1College of Intelligent Systems Science and Engineering, Harbin Engineering University, Harbin 150006, China.

ISA Transactions
|May 6, 2026
PubMed
Summary

This study introduces an event-triggered optimal control for unmanned surface vehicles (USVs) facing unknown conditions. The method saves actuator resources by triggering control updates only when necessary, ensuring stability and robustness.

Keywords:
Event-triggered mechanism (ETM)Formation controlLine-of-sight (LOS) guidanceReinforcement learningUnmanned surface vehicles (USVs)

Related Experiment Videos

Last Updated: May 8, 2026

Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

Area of Science:

  • Robotics and Control Systems
  • Marine Engineering
  • Artificial Intelligence

Background:

  • Underactuated Unmanned Surface Vehicles (USVs) require advanced control strategies for navigation.
  • Unknown dynamics and external disturbances pose significant challenges for USV control.
  • Existing control methods may not efficiently manage actuator resources.

Purpose of the Study:

  • To develop an event-triggered optimal line-of-sight (ETO-LOS) control scheme for multiple underactuated USVs.
  • To address unknown dynamics and external disturbances in USV systems.
  • To achieve genuine actuator resource savings through a unified event-triggered mechanism.

Main Methods:

  • A two-stage Identifier-Actor-Critic (IAC) framework combined with dynamic surface control (DSC) for online optimal policy learning.
  • A unified event-triggered mechanism based on the control vector norm for synchronous channel updates.
  • Inertia-matrix norm normalization to constrain signal amplitude within feasible ranges.

Main Results:

  • The proposed ETO-LOS control scheme demonstrates effectiveness and robustness in simulations.
  • The event-triggered mechanism ensures synchronous updates, leading to significant actuator resource savings.
  • Lyapunov-based analysis confirms the Semi-Globally Uniformly Ultimately Bounded (SGUUB) nature of closed-loop signals and exclusion of Zeno behavior.

Conclusions:

  • The developed ETO-LOS control scheme offers an efficient and robust solution for controlling multiple underactuated USVs with unknown dynamics.
  • The event-triggered approach provides practical benefits in terms of actuator resource management.
  • The method's stability and performance are validated through rigorous theoretical analysis and high-fidelity simulations.