Search Results - mechanical+systems

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Total Energy Shaping for Task-Invariant Control of Lower-Limb Exoskeletons

We present a total energy shaping control methodology for the development of portable lower-limb assistive exoskeletons and orthotic devices that help reduce the human’s effort and augment natural motion. Current robotic exoskeletons restrict joint motion to pre-defined position trajectories during gait rehabilitation; such methods aim to replicate...

Published: 5/20/2020 | Inventor(s): Robert Gregg, Ge Lv

Keywords(s): Biocompatible, Devices, Electronics, Engineering & Physical Sciences, Mechanical Systems, Medical Devices, Research Tools, Sensors & Controls, Signal Processing, Software, Therapeutics, Transportation, Wireless

Category(s): Robotics, Healthcare, Control Strategy

Powered Prosthetic Leg for Restoring Natural Locomotion and Mobility Across Tasks

Current passive prostheses are used to alleviate the effects of amputation, but they are limited in their ability to completely restore functionality because such mechanisms may only dissipate energy that the user introduces. In the case of above-knee amputees, many passive prosthetic devices aim to mimic normal walking conditions but typically leave...

Published: 6/26/2024 | Inventor(s): Robert Gregg, Toby Elery, Siavash Rezazadeh, Christopher Nesler

Keywords(s): Devices, Electronics, Energy Storage & Battery, Engineering & Physical Sciences, Healthcare, Life Sciences, Mechanical Systems, Medical, Medical Devices, Therapeutics

Category(s): Robotics

Improved Dental Abutment Geometries for Cement-Retained Crowns

According to the American Academy of Implant Dentistry, over 500,000 dental implants are performed per year in the United States. Despite being such a common procedure, peri-implant disease has been found to affect as much as 48% of implants according to the American Academy of Periodontology. Inefficiencies of commercial dental implant systems have...

Published: 4/26/2019 | Inventor(s): Lucas Rodriguez, Danieli Rodrigues, Juliana Saba, Chandur Wadhwani

Keywords(s): Biocompatible, Biomaterials, Devices, Healthcare, Implantable, Life Sciences, Mechanical Systems, Medical, Medical Devices

Category(s): Biomedical, Dental

Sheath-Core Fibers for Superelastic Electronics, Sensors, and Muscles

Summary:From fitness trackers to smart clothing, wearables are in high demand. Researchers at UT Dallas have invented a new class of elastic wires that can be woven into clothing or made into super-stretchy charger cords. Lighter-than-air, electrically conductive sheets of tiny carbon nanotubes are wrapped around a long rubber core to create conducting...

Published: 4/26/2019 | Inventor(s): Ray Baughman, Shaoli Fang, Carter Haines, Hongbing Lu, Dong Qian

Keywords(s): Biomaterials, Industrial & Manufacturing, Mechanical Systems, Medical Devices, Motors, Nanotechnology, Polymers, Robotics, Sensors & Controls, Textiles

Category(s): Materials, Electronics

Unified Lower-Limb Prosthetic Control Strategy

Non-Confidential Description: This technology defines a novel control strategy for a powered prosthetic leg that unifies the entire gait cycle, eliminating the need to switch between controllers during different periods of gait. Current control methods divide the gait cycle into several sequential periods with independent controllers, resulting...

Published: 5/20/2020 | Inventor(s): Robert Gregg, David Quintero, Anne Martin

Keywords(s): Biotechnology, Devices, Electronics, Engineering & Physical Sciences, Healthcare, Life Sciences, Mechanical Systems, Motors, Sensors & Controls, Therapeutics

Category(s): Biomedical, Control Strategy, Robotics

Fuel-Powered Artificial Muscles

These inventions are new, highly-efficient actuators which can function as artificial muscles. They are 100 times stronger than natural muscles, able to do 100 times greater work per cycle, and produce larger contractions than natural muscles. Developed using nanotechnology, these actuators are powered through two methods that convert the chemical energy...

Published: 4/26/2019 | Inventor(s): Ray Baughman, Von Ebron, Zhiwei Yang, Daniel Seyer, Mikhail Kozlov, Jiyoung Oh, Hui Xie, Joselito Razal, John Ferraris, Alan Macdiarmid, William Macaulay

Keywords(s): Chemistry, Coatings, Devices, Engineering & Physical Sciences, Fuel Cells, Industrial & Manufacturing, Mechanical Systems, Motors, Nanotechnology, Processes, Robotics, Textiles

Category(s): Materials