Robotics

Construction for Two-Position Synthesis of a Four-Bar Linkage

Construction for Two-Position Synthesis of a Four-Bar Linkage

The graphical construction of a four-bar linkage that coordinates…
Construction of a Skew Pantograph Leg Mechanism

Construction of a Skew Pantograph Leg Mechanism

This video adds a skew pantograph to a four-bar linkage in order…
Construction of Klann-style Leg Mechanism

Construction of Klann-style Leg Mechanism

In this video, we start with a four-bar linkage and coupler curve…
Construction of a Translating Link for a Leg Mechanism

Construction of a Translating Link for a Leg Mechanism

This video starts with a four-bar linkage with a coupler curve…
Construction of the Cubic of Stationary Curvature for a Four-bar Linkage

Construction of the Cubic of Stationary Curvature for a Four-bar Linkage

This video shows the construction of the cubic of stationary…
Construction of the Inflection Circle for a Four-Bar Linkage

Construction of the Inflection Circle for a Four-Bar Linkage

This tutorial constructs the inflection circle for a particular…
Construction of the Canonical Coordinate System for a Four-Bar Linkage

Construction of the Canonical Coordinate System for a Four-Bar Linkage

This tutorial shows how to use Geogebra to construct the canonical…
Walking Robot Student Project

Walking Machine Class Projects: Ohio State ME 5751

Prof Haijun Su at Ohio State University had his students design…
Sphinx and Sphere VR and the History of Kinematic Synthesis

Sphinx and Sphere VR and the History of Kinematic Synthesis

Our Sphinx software was the first computer-aided design system…
LINCAGES

LINCAGES and the History of Kinematic Synthesis

The linkage design software developed by Art Erdman and his…
KinSyn and the History of Kinematic Synthesis

KinSyn and the History of Kinematic Synthesis

My first experience with computer based kinematic synthesis was…
DIYWalkers

Strider and TrotBot at DIYWalkers.com

Just after I published my book Kinematic Synthesis of Mechanisms…
About Geogebra PageJMM

About Geogebra-Kinematic Synthesis of Mechanisms

The animated four-bar linkage FHJD is constructed using dimensions…
Chapter 6 Title PageJMM

Chapter 6 Animations-Kinematic Synthesis of Mechanisms

Here are the eight Movies in Chapter 6 of Kinematic Synthesis…
Chapter 5 Title PageJMM

Chapter 5 Animations-Kinematic Synthesis of Mechanisms

Here are the four Movies in Chapter 5 of Kinematic Synthesis…
Chapter 4 Title PageJMM

Chapter 4 Animations-Kinematic Synthesis of Mechanisms

Here are the four Movies in Chapter 4 of Kinematic Synthesis…
Chapter 3 Title PageJMM

Chapter 3 Animations-Kinematic Synthesis of Mechanisms

Here are the four Movies in Chapter 3 of Kinematic Synthesis…
Chapter 2 Title PageJMM

Chapter 2 Animations-Kinematic Synthesis of Mechanisms

Here are the six Movies in Chapter 2 of Kinematic Synthesis of…
Chapter 1 Title PageJMM

Chapter 1 Animations-Kinematic Synthesis of Mechanisms

Here are the three Movies in Chapter 1 of Kinematic Synthesis…
Kinematic Synthesis of Mechanisms Title Video

Kinematic Synthesis of Mechanisms Title Video

This animation was prepared by Yang Liu of a walking machine…
Kinematic Synthesis of MechanismsJMM

Kinematic Synthesis of Mechanisms: A project based approach

This book is an introduction to the geometric theory used to…
ITTK on Amazon.com

Introduction to Theoretical Kinematics, paperback on Amazon.com

I am pleased to report that a paperback version my book Introduction…
GraspLab SeminarGraspLab Seminar

Design of Linkages to Draw Curves, GRASPLab Seminar

On May 8, 2018, I was pleased to give a seminar at the University…
Rectilinear Six-bar

Rectilinear Six-Bar (Candy Coating Linkage)

Jeff Glabe designed this six-bar linkage to move through six…
Hummingbird Spatial Six-bar

Hummingbird Spatial Six-bar Linkage

This spatial six-bar linkage provides a compact flapping wing…
Flapping Wing Prototype

Flapping Wing Prototype

This is the manufacturing prototype for the flapping wing mechanism…
Soil Conditioning Port Valve

RPR-2SS Soil Conditioning Valve

This is an animation by Benjamin Liu of a spatial RPR-2SS six-bar…
Flapping wing mechanism

Flapping Wing Mechanism

Benjamin Liu prepared this animation of the flapping wing…
Cursive character for dragon

Linkages draw Bezier curves

Here is an example of our Bezier curve drawing linkages. The…
Yang Signature

Linkage that signs your name

Yang Liu has developed Bezier linkages that trace trigonometric…
Prototype Butterfly Linkage

Manufacturing Prototype for the Butterfly Linkage

This animation is taken from Yang Liu's detailed design drawings…
Whale Linkage

Bezier Linkages

Recent research on the design of linkages by Yang Liu has…
Robotics Handbook

Robot Ethics

I found this excerpt of the TEDx talk by Bruno Siciliano…
Butterfly drawing mechanism

Design of Drawing Mechanisms

Mechanical systems that draw trigonometric curves provide a versatile…
Mechanisms and Robotics Conference

2016 Mechanisms and Robotics Conference

The 2016 Mechanisms and Robotics conference is part of International…
MotionGen Horse

Motion Gen Linkage Design App

MotionGen is a planar four-bar linkage simulation and synthesis…
Trifolium Contra-parallelograms

Trifolium using contra-parallelograms

Yang Liu shows that a simple linkage can draw the trifolium curve. For…
Fourier Curve Tracing

Fourier Curve Tracing

This animation by Yang Liu is inspired by the mechanical Fourier…
SIAM News

SIAM News: Biologically inspired linkage design

This article by Jon Hauenstein with me for SIAM News (Society…
Heart Linkage

Heart Trajectory

This mechanical system was designed by Yang Liu to trace…

Micro-linkages for Compliant Material

Material Unit Cell

Material Unit Cell

Lucas Shaw and Prof. Jonathan Hopkins show the micro-architecture of an actively compliant material. Micro-actuators within the unit cells of an assembly are coordinated to reshape the assembly as desired. This was presented as part of the 2015 ASME Design Engineering Technical Conferences in Boston, MA, August 2-5. The video below shows what this assembly can do.

[youtube]https://www.youtube.com/watch?v=pPXMtlP_OAQ[/youtube]



Actuating Morphing Linkages

Target Profiles for Morphing Linkage

Target Profiles for Morphing Linkage

Lawrence Funke and Prof. James Schmiedeler of the University of Notre Dame Locomotion and Biomechanics Lab show that the movement of a morphing linkage through its target profiles can be improved by coordinating actuation of the sub-chains. This was presented at the Mechanisms and Robotics Conference which was part of the 2015 ASME Design Engineering Technical Conferences, August 2-5, in Boston, MA. The video below shows the improvement obtained by moving from 1 to 3 coordinated actuators.
[youtube]https://www.youtube.com/watch?v=r3DwHyRAh08[/youtube]


Rolling Robot at SUTD

Virgo 2 SUTD

Virgo 2 SUTD

A research team including Profs. GimSong Soh, Kristin Wood and Kevin Otto at Robotics Innovation Lab at the Singapore University of Technology and Design has developed a rolling robot about the size of a baseball. The design and motion planning of this robot, Virgo 2.0, was presented at the Mechanisms and Robotics Conference which was part of the 2015 ASME Design Engineering Technical Conferences, August 2-5, in Boston, MA. A demonstration of the Virgo 2.0 moving through a figure eight path around obstacles is shown in the video below.
[youtube]https://www.youtube.com/watch?v=z9nZbOlhSqw[/youtube]


Interesting Planar Robot at Laval

[youtube]https://www.youtube.com/watch?v=_vp1ELEtDN4[/youtube]
Students of Prof. Clement Gosselin at the Laval University Robotics Laboratory demonstrate a four-degree of freedom planar robot. I particularly like the demonstration of its use as a gripper that does a cartwheel just for fun.


Tensegrity Robotics at UC Berkeley

[youtube]https://www.youtube.com/watch?v=ZwYXfijMet0[/youtube]
Students in Prof. Alice Agogino’s Berkeley Emergent Space Technologies Laboratory, the BEST Lab, working on motion planning for their tensegrity robot.


Origami Art at BYU

Origami Art BYU

Origami Art BYU

Mechanical engineering students in Prof. Larry Howell’s Compliant Mechanisms Research Group designed and constructed this kinetic structure for the BYU Museum of Art. It illustrates paper folding known as origami.
[youtube]https://www.youtube.com/watch?v=5e28J066oGY[/youtube]