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

Time and frequency -Domain Interpretation of Phase-lead Control01:24

Time and frequency -Domain Interpretation of Phase-lead Control

145
Phase-lead controllers are commonly used in various control systems to enhance response speed and stability. Adjusting the brightness on a television screen offers a practical example of phase-lead control. When contrast is enhanced, a phase-lead controller is employed. Mathematically, phase-lead control is identified when the first parameter is smaller than the second.
The design of phase-lead control involves the strategic placement of poles and zeros to balance steady-state error and system...
145
Time and frequency -Domain Interpretation of Phase-lag Control01:21

Time and frequency -Domain Interpretation of Phase-lag Control

156
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...
156
Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

240
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
240
Gain01:15

Gain

261
Gain and phase shift are properties of linear circuits that describe the effect a circuit has on a sinusoidal input voltage or current. The circuit's behavior that contains reactive elements will depend on the frequency of the input sinusoid. As a result, it is observed that the gain and phase shift will all be frequency functions.
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
261
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

134
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,...
134

You might also read

Related Articles

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

Sort by
Same author

Design, synthesis, and anti-colorectal cancer activity of quinoxalines with improved drug-like properties.

Bioorganic chemistry·2026
Same author

Application of CAR-T therapy in solid tumors: current opportunities and challenges.

Cancer gene therapy·2026
Same author

Wide-Range Adaptive Metal Oxide for Hydrogen Sulfide Detection From Earth to Space-Like Environments.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Low-loss SAW RFID using the reflective multistrip coupler as reflectors.

Microsystems & nanoengineering·2026
Same author

Natural colloids can alter the bacterial surface biomolecules and interfacial energies affecting the transport of bacteria in unsaturated porous media.

Journal of environmental management·2025
Same author

Sources apportionments of heavy metal(loid)s in soils based on positive matrix factorization (PMF) and lead isotope fingerprinting.

Journal of environmental management·2025
Same journal

Theoretical Foundations of the Echo Envelope Statistical Modeling: A Tutorial.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Practical Demonstrations of FR3-Band Thin-Film Lithium Niobate Acoustic Filter Design.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Real-Time Heterogeneous Helical Wave Spectrum Method for Transabdominal Passive Acoustic Mapping.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Cascaded Plane Wave Ultrasound Velocity Vector Imaging: In Vivo Feasibility in Carotid Arteries.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

Quantitative Acoustic Attenuation Scanning Using a Phase-Insensitive Ultrasound Computed Tomography System.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
Same journal

FPGA-Accelerated CNN Reconstruction for Low-Power Sparse-Array Ultrasound Imaging.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2025
See all related articles

Related Experiment Video

Updated: Oct 1, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

9.9K

An Algorithm for Solving the Phase Ambiguity Problem of SAW Delay-Line Sensor Systems.

Junhao Cao, Zixiao Lu, Yahui Tian

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |March 3, 2022
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces dual-band phase estimation (DBPE) to resolve phase ambiguity in frequency-domain sampling (FDS) surface acoustic wave (SAW) sensors. DBPE enhances measurement range and precision without altering sensor design, proving effective in simulations and temperature sensing.

    More Related Videos

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 12, 2014

    8.6K
    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    8.2K

    Related Experiment Videos

    Last Updated: Oct 1, 2025

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

    Published on: January 28, 2019

    9.9K
    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
    06:25

    Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

    Published on: February 12, 2014

    8.6K
    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
    05:57

    Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

    Published on: April 1, 2020

    8.2K

    Area of Science:

    • Sensor Technology
    • Signal Processing
    • Materials Science

    Background:

    • Phase ambiguity hinders wide-range, high-precision measurements in frequency-domain sampling (FDS) surface acoustic wave (SAW) delay-line sensor systems.
    • Existing methods often require specific sensor designs or signal modifications.

    Purpose of the Study:

    • To propose and validate an improved phase estimation algorithm, dual-band phase estimation (DBPE), for FDS-based SAW sensors.
    • To enhance the measuring range and precision of SAW delay-line sensors by addressing phase ambiguity.

    Main Methods:

    • Development of the dual-band phase estimation (DBPE) algorithm.
    • Monte Carlo simulations to evaluate algorithm performance, particularly at low signal-to-noise ratios (SNR).
    • Experimental validation using a YZ-cut LiNbO3 SAW delay-line sensor and a switched frequency-stepped continuous wave (S-FSCW) reader for temperature sensing.

    Main Results:

    • DBPE effectively solves the phase ambiguity problem in FDS-based SAW sensor systems.
    • Simulations indicate DBPE offers superior measuring precision over frequency estimation in low SNR conditions.
    • Experimental results demonstrate DBPE's effectiveness in improving both the measuring range and precision for temperature sensing applications.

    Conclusions:

    • The proposed DBPE algorithm provides a versatile solution for phase ambiguity in FDS-based SAW delay-line sensors.
    • DBPE enables extended and adjustable measuring ranges without modifying sensor hardware or transmitted signals.
    • The algorithm shows significant potential for broad application across various FDS-based SAW sensing systems, including temperature measurement.