Arizona State University

University of California

Daniel M Aukes

Yuhao Jiang

Mohammad Sharifzadeh

Wenlong Zhang

Dangli Yang

Shatadal Mishra

Ximin He

Joseph Campbell

Hani Ben Amor

Kevin Luck

Kevin Nichols

Roozbeh Emami

Michael Jansen

Yousif Alsaid

Mingsong Jiang

Nicholas Gravish

A mechanical system includes a curved beam and a motor coupled to the curved beam. The curved beam is configured to buckle at two different locations along the positive and negative portions of its load/displacement curve, corresponding to opposite and equal sense bending directions. The motor is configured to impart a flapping motion to the curved beam.

Buckling beams for underwater and terrestrial autonomous vehicles

A device includes a tube and a sleeve configured to at least partially encircle a portion the tube along its length. The tube is flexible and airtight and defines a longitudinal axis along a center of the tube, and is configured to bend along the longitudinal axis upon at least partial evacuation of the tube to form a joint. The joint defines a joint angle relative to the longitudinal axis, thereby approximating a revolute joint with torsional stiffness. Actuating a joint includes partially evacuating a flexible tube defining a longitudinal axis, thereby forming a bend in the tube at an angle with respect to the longitudinal axis at a perimeter of a rigid sleeve at least partially encircling the tube, and restoring a neutral pressure to the tube, thereby removing the bend in the tube.

Pinched tubes for reconfigurable robots

Various embodiments for a foldable quad-rotor (FQR) inspired by an origami mechanism are disclosed herein. The FQR can fold its arms during flight to enable aggressive turning maneuvers and operations in cluttered environments. A dynamic model of folding is built for this system with the collected data, and a feedback controller is designed to control the position and orientation of the FQR. Lyapunov stability analysis is conducted to show that the system is stable during arm folding and extension, and motion planning of the FQR is achieved based on a modified minimum-snap trajectory generation method.

Systems and methods for an origami-inspired foldable quad-rotor

A hydrogel precursor composition includes 10 wt % to 40 wt % N-isopropylacrylamide, 0.5 wt % to 2 wt % N,N'-methylenebisacrylamide, a solvent, and a photoinitiator. The hydrogel precursor composition is photocurable and thermally responsive. A thermally responsive hydrogel is formed by photopolymerizing the hydrogel precursor composition. The thermally responsive hydrogel may be used to mimic the activity of muscle fibers.

Shape morphing soft materials and assemblies including the same

Various embodiments of a foldable unmanned aerial vehicle having a multi-layer laminate structure and extendible arms are disclosed.

Systems and methods for a foldable unmanned aerial vehicle having a laminate structure

Various embodiments for fast prototyping of morphologies and controllers related to locomotion for a robotic device are disclosed.

Systems and methods for rapid-prototyped robotic devices

In one aspect, a device for providing propulsion in water is provided by the present disclosure. The device includes a parallel mechanism including at least five rigid bars and at least five joints, each joint being positioned between two of the rigid bars and configured to allow movement of the at least five rigid bars, a first servo motor coupled to a first rigid bar included in the at least five rigid bars, a second servo motor coupled to a second rigid bar included in the at least five rigid bars, and a controller coupled to the first servo motor and the second servo motor and configured to actuate the first servo motor and the second servo motor according to a predetermined pattern.

Growing community of inventors

Gilbert, AZ, United States of America

Daniel M Aukes