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

PI Controller: Design01:24

PI Controller: Design

503
Proportional Integral (PI) controllers are a fundamental component in modern control systems, widely used to enhance performance and mitigate steady-state errors. They are particularly effective in applications such as automatic brightness adjustment on smartphones, where they excel at mitigating steady-state errors for step-function inputs. Unlike PD controllers, which require time-varying errors to function optimally, PI controllers leverage their integral component to address residual...
503
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

125
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,...
125

You might also read

Related Articles

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

Sort by
Same author

Evaluation of ecological suitability and quality of wild <i>Eleutherococcus senticosus</i> in Liaoning, China.

Frontiers in plant science·2026
Same author

Tibial cortex transverse transport-derived small extracellular vesicles promote diabetic wound healing by enhancing angiogenesis and suppressing inflammation.

Scientific reports·2026
Same author

Epicardial Adipose Tissue Volume and Coronary Plaque Progression.

JACC. Cardiovascular imaging·2026
Same author

Feynman-Kac Reweighted Schrödinger Bridge Matching for Surface-based Tau PET Harmonization.

ArXiv·2026
Same author

Randomised feasibility trial of outpatient versus inpatient laparoscopic cholecystectomy for benign gallbladder disease (OUTchol): study protocol.

BMJ open·2026
Same author

Liposomes containing histidine overcome poly ADP-ribose polymerase inhibitor resistance.

Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy·2026

Related Experiment Video

Updated: Sep 14, 2025

Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
08:17

Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

Published on: May 25, 2016

9.4K

Trajectory Tracking Control Employing Nonlinear Compensator and State Observer for Photothermal-Driven Liquid Crystal

Jundong Wu, Xinyu Nie, Yawu Wang

    IEEE Transactions on Cybernetics
    |July 22, 2025
    PubMed
    Summary

    This study introduces a novel control method for photothermal liquid crystal elastomer (LCE) actuators, addressing hysteresis and complex deformation. The approach ensures precise trajectory tracking for advanced LCE applications.

    More Related Videos

    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

    8.8K
    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
    07:56

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

    Published on: September 20, 2017

    11.8K

    Related Experiment Videos

    Last Updated: Sep 14, 2025

    Free-form Light Actuators &#8212; Fabrication and Control of Actuation in Microscopic Scale
    08:17

    Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale

    Published on: May 25, 2016

    9.4K
    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

    8.8K
    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
    07:56

    Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light

    Published on: September 20, 2017

    11.8K

    Area of Science:

    • Materials Science
    • Robotics
    • Control Systems Engineering

    Background:

    • Photothermal-driven liquid crystal elastomer (LCE) actuators exhibit hysteresis and complex deformation, challenging precise trajectory tracking.
    • Existing control methods struggle to overcome the inherent nonlinearities and dynamic complexities of LCE actuators.

    Purpose of the Study:

    • To develop an effective trajectory tracking control method for photothermal-driven LCE actuators.
    • To address the challenges posed by hysteresis and complex deformation mechanisms in LCE actuators.

    Main Methods:

    • A multistep control strategy involving temperature and displacement control.
    • Design of a non-Lipschitz continuous state-feedback controller for finite-time temperature convergence.
    • Implementation of a state observer for LCE displacement rate estimation.
    • Utilization of a nonlinear inverse compensator to mitigate hysteresis nonlinearity.
    • Application of pole placement for trajectory tracking controller design.

    Main Results:

    • Successful finite-time convergence of temperature control.
    • Accurate estimation of LCE displacement rate.
    • Compensation for hysteresis nonlinearity, simplifying the control problem.
    • Achieved precise trajectory tracking for the LCE actuator across various target paths.

    Conclusions:

    • The proposed control method effectively manages LCE actuator hysteresis and complex dynamics.
    • This approach enables robust and accurate trajectory tracking for photothermal-driven LCE actuators.
    • The validated method offers a promising solution for advanced robotic and actuation systems utilizing LCEs.