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

Design of Transmission Shafts01:16

Design of Transmission Shafts

376
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by...
376
Transmission Shafts: Problem Solving01:09

Transmission Shafts: Problem Solving

266
Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...
266
Mechanical Systems01:22

Mechanical Systems

234
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
234
Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

388
One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
388
Screw: Problem Solving01:21

Screw: Problem Solving

438
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
438
Angle of Twist: Problem Solving01:13

Angle of Twist: Problem Solving

350
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
350

You might also read

Related Articles

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

Sort by
Same author

Effects and mechanisms of non-restrictive external stent for prevention of vein graft restenosis in a rabbit model.

Chinese medical journal·2010
Same author

Embryonic development of the internal anal sphincter in rats with anorectal malformations.

Journal of pediatric surgery·2010
Same author

[Cluster analysis in micrangium detection in malignant nasal and paranasal sinus tumor].

Nan fang yi ke da xue xue bao = Journal of Southern Medical University·2010
Same author

Surgical treatment of early acute thrombosis of mechanical mitral prosthesis.

The heart surgery forum·2010
Same author

The computational model to predict accurately inhibitory activity for inhibitors towards CYP3A4.

Computers in biology and medicine·2010
Same author

Synthesis and anticonvulsant activity of N-3-arylamide substituted 5,5-cyclopropanespirohydantoin derivatives.

European journal of medicinal chemistry·2010
Same journal

Multiphysics Investigation on Thermal Characteristics of Internal Bio-Inspired V-Ribbed Cooling Channels for Outer Rotor PMSM.

Biomimetics (Basel, Switzerland)·2026
Same journal

Smart Logistics Model for Supply Chain Management via Brain-Inspired Geometric Deep Networks.

Biomimetics (Basel, Switzerland)·2026
Same journal

A Systematic Taxonomy of the Sunflower Optimization Algorithm: Variants, Hybridization Strategies, Applications, and Research Directions.

Biomimetics (Basel, Switzerland)·2026
Same journal

Toward a Compositional Theory of Trust in Embodied Intelligence: A QNLP Framework for Modeling Context, Interaction, and Trustworthiness.

Biomimetics (Basel, Switzerland)·2026
Same journal

Empirical Logic for Bio-Inspired Soft Computing: Illustrative Applications in Control Engineering and Cluster Analysis.

Biomimetics (Basel, Switzerland)·2026
Same journal

A Modified Multi-Strategy Dhole Optimization Algorithm and Its Engineering Applications.

Biomimetics (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Jul 21, 2025

Design and Implementation of a Bespoke Robotic Manipulator for Extra-corporeal Ultrasound
07:41

Design and Implementation of a Bespoke Robotic Manipulator for Extra-corporeal Ultrasound

Published on: January 7, 2019

9.2K

Multi-Joint Bionic Mechanism Based on Non-Circular Gear Drive.

Dawei Liu1,2, Tao Zhang1, Yuetong Cao1

  • 1College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China.

Biomimetics (Basel, Switzerland)
|July 28, 2023
PubMed
Summary
This summary is machine-generated.

A novel non-circular gear drive system simplifies multi-joint cable mechanisms, eliminating complex controls. This mechanical drive enables precise cable extension/retraction for coordinated motion in bionic robots.

Keywords:
cable drive mechanismmotion decouplingmulti-joint bionic mechanismnon-circular gear

More Related Videos

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
08:17

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components

Published on: July 18, 2018

7.2K
Design of a Biaxial Mechanical Loading Bioreactor for Tissue Engineering
08:04

Design of a Biaxial Mechanical Loading Bioreactor for Tissue Engineering

Published on: April 25, 2013

14.5K

Related Experiment Videos

Last Updated: Jul 21, 2025

Design and Implementation of a Bespoke Robotic Manipulator for Extra-corporeal Ultrasound
07:41

Design and Implementation of a Bespoke Robotic Manipulator for Extra-corporeal Ultrasound

Published on: January 7, 2019

9.2K
An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components
08:17

An Additive Manufacturing Technique for the Facile and Rapid Fabrication of Hydrogel-based Micromachines with Magnetically Responsive Components

Published on: July 18, 2018

7.2K
Design of a Biaxial Mechanical Loading Bioreactor for Tissue Engineering
08:04

Design of a Biaxial Mechanical Loading Bioreactor for Tissue Engineering

Published on: April 25, 2013

14.5K

Area of Science:

  • Robotics
  • Mechanical Engineering
  • Control Systems

Background:

  • Multi-joint cable drive mechanisms often face challenges with nonlinear cable expansion/contraction.
  • Existing servo-sensing control systems can be complex and costly.

Purpose of the Study:

  • To propose a mechanical drive method using non-circular gears to address nonlinear cable drive issues.
  • To simplify the system complexity and reduce the cost of multi-joint cable mechanisms.

Main Methods:

  • Constructed a multi-joint single-degree-of-freedom (DOF) bending mechanism using T-shaped and cross-shaped components.
  • Clarified the operating principle of non-circular gear-driven multi-joint mechanisms.
  • Established relationships between joint angle, cable extension/retraction, and non-circular gear ratio.
  • Developed a decoupling scheme for multi-DOF bending mechanisms using Bowden cables.
  • Proposed and deduced a method for eliminating non-circular gear backlash.

Main Results:

  • A two-DOF multi-joint bionic mechanism driven by non-circular gears was developed.
  • Experimental results demonstrated coordinated bending motion achieved through precise cable control.
  • The non-circular gear backlash was precisely controlled using a derived expression.

Conclusions:

  • The proposed non-circular gear drive method offers a reliable and simple control solution for multi-joint cable mechanisms.
  • This technology is suitable for applications in bionic fish and quadruped robots.
  • The system effectively manages nonlinear cable expansion/contraction, enhancing robotic motion control.