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

Hydraulic Jump: Problem Solving01:16

Hydraulic Jump: Problem Solving

562
To analyze a hydraulic jump in a rectangular channel with a flow speed of 6 meters per second, follow these steps:Calculate Effective Upstream Velocity:When the downstream gate closes, a hydraulic jump forms, traveling upstream at 2 meters per second. This wave speed combines with the initial channel flow velocity, creating an effective upstream velocity.Identify Flow Velocities Before and After the Hydraulic Jump:Upstream of the hydraulic jump, the effective flow velocity includes both the...
562
Hydraulic Jump01:29

Hydraulic Jump

701
A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
701
Energy Line and Hydraulic Gradient Line01:27

Energy Line and Hydraulic Gradient Line

2.4K
Based on Bernoulli's equation, the energy line (EL) and hydraulic grade line (HGL) provide graphical representations of energy distribution in a fluid flow system. For steady, incompressible, inviscid flows, Bernoulli's equation is expressed as:
2.4K
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

749
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
749
Control System Problem01:21

Control System Problem

442
In an open-loop system, such as a basic thermostat, the poles of the transfer function influence the system's response but do not determine its stability. However, when feedback is introduced to form a closed-loop system, such as an advanced thermostat that adjusts heating based on room temperature, stability is governed by the new poles of the closed-loop transfer function.
When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...
442
Combinatorial Gene Control02:33

Combinatorial Gene Control

9.7K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
9.7K

You might also read

Related Articles

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

Sort by
Same author

Development of a gut-on-a-chip platform to monitor dynamic GLP-1 secretion from primary intestinal tissue.

Biosensors & bioelectronics·2026
Same author

A paradigm for skilled forelimb reaching by head-restrained mice.

bioRxiv : the preprint server for biology·2026
Same author

A feedforward-feedback control framework for disturbance rejection in multi-loop PI controlled servo actuators under varying disturbance sensing conditions.

ISA transactions·2026
Same author

Associations of lifestyle factors with survival and health statuses in Chinese older adults: a prospective cohort study.

American journal of preventive medicine·2026
Same author

Effects of different planting patterns on potato rhizosphere soil microbial composition and yield.

BMC microbiology·2026
Same author

Discovery and dynamic pharmacology of μ-opioid receptor positive allosteric modulators.

bioRxiv : the preprint server for biology·2026

Related Experiment Video

Updated: Feb 10, 2026

Bouncing Ball with a Uniformly Varying Velocity in a Metronome Synchronization Task
05:04

Bouncing Ball with a Uniformly Varying Velocity in a Metronome Synchronization Task

Published on: September 21, 2017

6.4K

Compliance control for a hydraulic bouncing system.

Guangrong Chen1, Junzheng Wang1, Shoukun Wang1

  • 1The Key Laboratory of Intelligent Control and Decision of Complex Systems, Beijing Institute of Technology, Beijing, 100081, China.

ISA Transactions
|May 22, 2018
PubMed
Summary

This study reduces impact force and controls bouncing height using active compliance and velocity control. Experiments validate the controller

Keywords:
Active complianceBouncing height controlCompliance controlVelocity control

More Related Videos

Author Spotlight: Improved Imaging for Neovascular Development in Congenital Heart Disease Research
07:53

Author Spotlight: Improved Imaging for Neovascular Development in Congenital Heart Disease Research

Published on: April 26, 2024

1.1K
Wastewater Irrigation Impacts on Soil Hydraulic Conductivity: Coupled Field Sampling and Laboratory Determination of Saturated Hydraulic Conductivity
08:09

Wastewater Irrigation Impacts on Soil Hydraulic Conductivity: Coupled Field Sampling and Laboratory Determination of Saturated Hydraulic Conductivity

Published on: August 19, 2018

9.6K

Related Experiment Videos

Last Updated: Feb 10, 2026

Bouncing Ball with a Uniformly Varying Velocity in a Metronome Synchronization Task
05:04

Bouncing Ball with a Uniformly Varying Velocity in a Metronome Synchronization Task

Published on: September 21, 2017

6.4K
Author Spotlight: Improved Imaging for Neovascular Development in Congenital Heart Disease Research
07:53

Author Spotlight: Improved Imaging for Neovascular Development in Congenital Heart Disease Research

Published on: April 26, 2024

1.1K
Wastewater Irrigation Impacts on Soil Hydraulic Conductivity: Coupled Field Sampling and Laboratory Determination of Saturated Hydraulic Conductivity
08:09

Wastewater Irrigation Impacts on Soil Hydraulic Conductivity: Coupled Field Sampling and Laboratory Determination of Saturated Hydraulic Conductivity

Published on: August 19, 2018

9.6K

Area of Science:

  • Robotics
  • Mechanical Engineering
  • Control Systems

Background:

  • Reducing impact forces and controlling bouncing height are critical in dynamic legged systems.
  • Model uncertainties and external disturbances pose challenges to precise control.

Purpose of the Study:

  • To develop a controller for reducing contact impact and precisely managing leg stiffness and bouncing height.
  • To enhance the compliance and stability of legged robots during dynamic maneuvers.

Main Methods:

  • Implementing a combined position/force active compliance control during the deceleration phase.
  • Utilizing velocity control for the cylinder to regulate bouncing height in the acceleration phase.
  • Integrating a proportional-integral-derivative (PID) controller to compensate for model uncertainties and disturbances.

Main Results:

  • Experimental validation demonstrated significant reduction in impact forces.
  • The proposed controller achieved effective control over bouncing height to a desired level.
  • Analysis revealed the influence of initial energy, spring preload, and cylinder velocity on bouncing height.

Conclusions:

  • The developed controller effectively mitigates impact forces and enhances leg compliance.
  • Precise control of bouncing height is achievable, improving dynamic performance.
  • The findings provide valuable insights for designing robust control strategies in legged robotics.