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Exoskeleton Leg Brace, Aaron Indermuhle, Magomed Kasumov, Cevat Bagcioglu, Lucas Battaglia Jan 2019

Exoskeleton Leg Brace, Aaron Indermuhle, Magomed Kasumov, Cevat Bagcioglu, Lucas Battaglia

Williams Honors College, Honors Research Projects

This report details the design process of a lower limb exoskeleton leg brace for elderly people with walking disabilities or others with disabilities that limit mobility. While there are other similar products on the market, the general design can be improved and these improvements have been implemented into the design presented within. Among these improvements are progress in efficiency, weight, user comfort, and cost. The results of the study are the design of a novel leg brace that improves on existing designs in each of these areas.

Our design solution incorporates the use of a single leg brace with no ...


Optimizing Wearable Assistive Devices With Neuromuscular Models And Optimal Control, Manish Sreenivasa, Matthew Millard, Paul Manns, Katja Mombaur Jan 2017

Optimizing Wearable Assistive Devices With Neuromuscular Models And Optimal Control, Manish Sreenivasa, Matthew Millard, Paul Manns, Katja Mombaur

Faculty of Engineering and Information Sciences - Papers: Part B

The coupling of human movement dynamics with the function and design of wearable assistive devices is vital to better understand the interaction between the two. Advanced neuromuscular models and optimal control formulations provide the possibility to study and improve this interaction. In addition, optimal control can also be used to generate predictive simulations that generate novel movements for the human model under varying optimization criterion.


A Mechanical Exoskeleton, Shaojun Ma Jan 2016

A Mechanical Exoskeleton, Shaojun Ma

Theses and Dissertations

The purpose of this thesis is to design a 3-D exoskeleton model based on the mechanism of a kind of two degree-of-freedom suspension system. There are two main systems in the exoskeleton, including weight support system and walking assistive system. The weight support system consists a series of linkages, pulleys and springs, which is able to compensate wearer’s weight, make wearer feel much more easier when keeps a crouching posture. The walking assistive system consists clutch system and cable release system, which is able to help exoskeleton walk when led by wearer. In our exoskeleton design, excluding hydraulic and ...


Adaptive Basketball Shooter - Final Project Report, Jenna N. Becker, Richard A. Galanti, Justin D. Haley, Brett Y. Nayudu Jun 2014

Adaptive Basketball Shooter - Final Project Report, Jenna N. Becker, Richard A. Galanti, Justin D. Haley, Brett Y. Nayudu

Mechanical Engineering

The Friday Club is a joint venture between the Cal Poly Kinesiology Department and the San Luis Obispo Special Olympics that offers people with varying degrees of disability the opportunity to meet weekly and learn various sports and games. At Friday Club, athletes in wheelchairs with limited arm strength use devices built by Cal Poly mechanical engineering students in order to participate in various sports. Many devices are designed to attach to the Universal Play Frame (UPF), a wheel-chair attachment. The purpose of this project was to design and build a UPF device that will launch a basketball, so that ...


The Design And Development Of A Perceptual-Based Haptic Display Device, Sohaib Akhter Aug 2013

The Design And Development Of A Perceptual-Based Haptic Display Device, Sohaib Akhter

Theses and Dissertations

Graphical information presented as pictures, graphs, maps, and the like are an important media for relaying knowledge and are a fundamental means of education rarely experienced by people who are blind or have a severe visual impairment. This thesis presents the design, development and testing of a multiple finger, haptic matrix dynamic display device capable of relaying graphical information through simulated textures. The design is based on user perception studies that determined which hand constraints provided the best tradeoff between simplicity of design, accuracy and time to answer. The best design was one that incorporated multiple fingers in close proximity ...


Design Of A Pool Access Device, Linjun Bu, Patrick Graham May 2013

Design Of A Pool Access Device, Linjun Bu, Patrick Graham

Assistive Technology Resource Center Projects

A pool chair was designed using the 2010 ADA standards for accessible design. The design uses a parallel four-bar linkage mechanism and is able to lift the chair with an average weight person in and out of the pool. The motion of the design has been analyzed. The motion is achieved by an electronic linear actuator. The analysis of the motion of this design yields reasonable transmission angles of 73° to 110°.


Design Of A Powered Hand Orthosis, Elyssa Dorenfeld, Robert Wolf, Stephan Zeveska Apr 2013

Design Of A Powered Hand Orthosis, Elyssa Dorenfeld, Robert Wolf, Stephan Zeveska

Assistive Technology Resource Center Projects

The goal of this project was to design and manufacture a fully functional powered hand orthosis, controlled and operated by the contralateral hand, and used by people with diminished hand functions. Linear actuators were used to create the movement of the fingers through a six-bar linkage. The design reduces the twenty seven degrees of freedom in a healthy human hand to six and replicates the motions needed to perform the most common grips including the cylindrical, pinch, and key grips. Results showed that a single finger could exert a force of 50N. This correlates to an approximate hand strength of ...


Shoulder Mount For A Wearable Arm Orthosis, Richard Downey, Nikole Dunn, Adam Hoyt Apr 2013

Shoulder Mount For A Wearable Arm Orthosis, Richard Downey, Nikole Dunn, Adam Hoyt

Assistive Technology Resource Center Projects

Functionality of the upper limb is vital for performing Activities of Daily Living (ADLs) such as bathing, dressing, and eating. The goal of this project was to design, manufacture, test, and evaluate a shoulder mount to be used in conjunction with a powered, upper-limb orthosis. A prototype was developed that allows completion of all necessary ADLs, is user-friendly, and does not significantly increase the user’s body frame. On average, the device limits the user’s shoulder flexion and abduction by approximately 43% and 50%, respectively, and is reasonably adjustable to both male and female users in the 25th to ...


2012 Assistive Technology Resource Center- Laboratory Operations Digital Archive Project, Dale Herzog, Wut Yee Oo Jan 2013

2012 Assistive Technology Resource Center- Laboratory Operations Digital Archive Project, Dale Herzog, Wut Yee Oo

Assistive Technology Resource Center Projects

The 2012- 2013 ATRC Lab Operations IQP project pursued the goal of collecting the previous 5 years of development research conducted by previous IQP projects and, in conjunction with newly developed plans, implement a system to organize the lab’s facilities, streamline the reuse of existing research, and nourish the development of new projects via in-lab courses, IQP’s, MQP’s, and Ph.D. programs. Following initial efforts to establish a firm operating foundation within the ATRC, our IQP worked to reestablish the assistive technology community at WPI through promotion of the Engineering Projects in Community Service (EPICS) club. Through ...


Atrc Communications, Anthony Begins, Stephan Zeveska May 2012

Atrc Communications, Anthony Begins, Stephan Zeveska

Assistive Technology Resource Center Projects

The Assistive Technology Resource Center (ATRC) at Worcester Polytechnic Institute (WPI) was founded in 1999 to serve as a regional provider of assistive devices, services, and engineering solutions. A need existed for the ATRC to develop an improved framework to communicate with the WPI and outside communities. This project created a framework to enable the ATRC's operation to be self-sustainable and re-establish regular communications. Templates were developed for the informational brochure, newsletter and website. The Rehabilitation Engineering Laboratory was reorganized and procedures were developed to standardize the operation for future use. The results of this project will enable the ...


Pseudo-Fluid Control Extension System, John Dunbar, Christopher Farren, Mari Freitas Apr 2012

Pseudo-Fluid Control Extension System, John Dunbar, Christopher Farren, Mari Freitas

Assistive Technology Resource Center Projects

A pseudo-fluid control extension system was created to manipulate a medical device. The device had the ability to control a transesophageal echocardiogram transducer (TEE) from a distance of five feet. Designs were created using cable and hydraulic systems, but both systems were problematic. A pseudo-fluid system consisting of tubes filled with steel balls was developed to capture the positive aspects of cable and fluid systems. The user interface consisted of two rotatable knobs that actuate rack and pinion gear sets, which push the pseudo-fluid balls through tubes. At the distal ends of the tubes, the balls move the racks of ...


Rowing Foot Stretcher Design, John Madura, Daniel Pierson Apr 2012

Rowing Foot Stretcher Design, John Madura, Daniel Pierson

Assistive Technology Resource Center Projects

In crew racing shells, the foot stretcher attaches the shoes, providing a surface for the rower to push off. Background research, collected from patents, rower surveys, and safety requirements, identified several aspects of current foot stretchers that could be improved. A design was developed using solid modeling and axiomatic design, analyzed using FEA, and machined using CNC. User testing was conducted to ensure ergonomic and power requirements were met. Based on the results of testing 8 rowers, and design analysis, this project’s design was found to make the rower more comfortable, regardless of gender, ability, and rower size. Furthermore ...


Assistive Technology For Infants & Toddlers-Training, Center For Persons With Disabilities Feb 2012

Assistive Technology For Infants & Toddlers-Training, Center For Persons With Disabilities

Blog Posts

No abstract provided.


Support Communication Through Assistive Technology...Free Training, Center For Persons With Disabilities Jan 2012

Support Communication Through Assistive Technology...Free Training, Center For Persons With Disabilities

Blog Posts

No abstract provided.


Pedestrian Lane Detection For Assistive Navigation Of Blind People, M Le, Son Lam Phung, Abdesselam Bouzerdoum Jan 2012

Pedestrian Lane Detection For Assistive Navigation Of Blind People, M Le, Son Lam Phung, Abdesselam Bouzerdoum

Faculty of Engineering and Information Sciences - Papers: Part A

Navigating safely in outdoor environments is a challenging activity for vision-impaired people. This paper is a step towards developing an assistive navigation system for the blind. We propose a robust method for detecting the pedestrian marked lanes at traffic junctions. The proposed method includes two stages: regions of interest (ROI) extraction and lane marker verification. The ROI extraction is performed by using colour and intensity information. A probabilistic framework employing multiple geometric cues is then used to verify the extracted ROI. The experimental results have shown that the proposed method is robust under challenging illumination conditions and obtains superior performance ...


Baby Powder: The Latest Assistive Technology Tool, Center For Persons With Disabilities Aug 2011

Baby Powder: The Latest Assistive Technology Tool, Center For Persons With Disabilities

Blog Posts

No abstract provided.


Front Mounting Bicycle Attachment For Improved Accessibility Of Adult Passengers, Victor Montero, Kelly Roberge, Brandon Stuczko Apr 2011

Front Mounting Bicycle Attachment For Improved Accessibility Of Adult Passengers, Victor Montero, Kelly Roberge, Brandon Stuczko

Assistive Technology Resource Center Projects

Currently, no bicycle attachments are capable of transporting an adult passenger in front of a bicycle, which would significantly improve the passenger's range of vision and enjoyment. The goal of this project was to design a front mounting device that could accommodate adult passengers, including those with limited mobility, and could be adjusted to attach to different sized bicycle frames. The device frame was built out of 1" aluminum tubing and galvanized steel fittings and was attached to the bicycle through a compressive attachment mechanism. The driver's steering intuition was maintained through a 1:1 ratio in the ...


Design Of The Grab-Bot, Meaghan Busteed, Amanda Rinaldi Apr 2011

Design Of The Grab-Bot, Meaghan Busteed, Amanda Rinaldi

Assistive Technology Resource Center Projects

There is a need to develop an assistive device for persons who have difficulty reaching, retrieving, picking and placing objects in a household or office setting. Our goal is to design and prototype an electromechanically operated "grabber" to aid users in completing these tasks in the safest manner possible. A first generation prototype was successfully designed and manufactured utilizing several types of plastic and a simple circuit with DC motor. Testing has shown that the Grab-bot extends the user's reach by 2 feet and is designed to retrieve various objects weighing up to 2 pounds in a safe manner ...


Design Of A New Prosthetic Alignment Adaptor With Quantitative Alignment And Height Adjustment, Olufunmilayo Adebayo, Lydia George, Mark Marchand, Jeffrey Marrion Apr 2011

Design Of A New Prosthetic Alignment Adaptor With Quantitative Alignment And Height Adjustment, Olufunmilayo Adebayo, Lydia George, Mark Marchand, Jeffrey Marrion

Assistive Technology Resource Center Projects

After an amputation, a patient's prosthesis must be aligned with their body using an alignment adaptor. Current adaptors have two primary limitations: 1) the inability to adjust the vertical height during alignment, and 2) the inability to quantify the adjustments. Therefore, a new prototype adaptor was designed and manufactured that allows for adjustments in all six degrees of freedom, including height. In addition, a novel pin design allows for quantification of the alignment. The prototype was validated with prosthetist feedback and finite element analysis. A protocol for patient testing received IRB approval and is scheduled for the near future ...


Kinematic And Experimental Evaluation Of Commercial Wheelchair-Mounted Robotic Arms, John William Capille Jr. Oct 2010

Kinematic And Experimental Evaluation Of Commercial Wheelchair-Mounted Robotic Arms, John William Capille Jr.

Graduate Theses and Dissertations

Commercially available wheelchair-mounted robotic arms (WMRAs) are becoming more prevalent internationally but have yet to be largely developed and approved by the Food and Drug Administration in the United States. The purpose of this study was to experimentally evaluate commercially available WMRAs in a controlled test environment. The goal was to quantitatively compare each device through a standardized testing protocol. The study produced theoretical manipulability measurements as well as efficacy ratings of each device based on Denavit-Hartenberg kinematic parameters and physical testing, respectively. Both the manipulator and control devices of WMRA systems were evaluated. The iARM WMRA system was presented ...


Optimizing The Wpi Assistive Technology Resource Center: Marketing And Documentation, Lydia George, Deepti Kalluri May 2010

Optimizing The Wpi Assistive Technology Resource Center: Marketing And Documentation, Lydia George, Deepti Kalluri

Assistive Technology Resource Center Projects

The Assistive Technology Resource Center (ATRC) at Worcester Polytechnic Institute (WPI) was created in 1999 with the mission to serve as a regional provider of assistive devices and services. The Center is unique in its ability to provide a technical aspect to the development of customized assistive technology to its clients. An IQP group, Lyons and Trimby (2008), reevaluated the operations of the ATRC nine years after its establishment. The team determined that one area to focus on would be the organization of past projects completed within the ATRC into a centralized database. A second IQP group, Hristov, Mawhiney, and ...


Improved Walker Design, Meagan Foley, Kelly Johnson, Joseph Kalbach, Brittany Mcnally Apr 2010

Improved Walker Design, Meagan Foley, Kelly Johnson, Joseph Kalbach, Brittany Mcnally

Assistive Technology Resource Center Projects

Over 41,000 people sustain injuries from falls while using a walker each year. An improved walker design that decreases the chance of falling was developed from background research and mathematical modeling of users' falls. Two improvements were embodied as universal accessories that can be attached to any standard walker. The accessories are lateral leg extensions, which temporarily extend the base of support (BOS) and a tactile and electronics guidance package, which indicates the users' location relative to the BOS. Eight volunteers evaluated and compared the prototype to a standard walker. The prototype reduced the occurrence of stepping outside the ...


Powered Device For Pushing A Manual Wheelchair, Kevin Kordosky, Lindsay Mullins, Katelyn Perkins, George Von Roth Apr 2010

Powered Device For Pushing A Manual Wheelchair, Kevin Kordosky, Lindsay Mullins, Katelyn Perkins, George Von Roth

Assistive Technology Resource Center Projects

The goal of this project was to design and prototype a cost-effective, powered, manual wheelchair-pusher that is easy to use, transportable, and satisfies the requirements of institutional and personal use. The device locks around a crossbar underneath the wheelchair and uses a battery-powered motor with a drive wheel and a manually controlled front wheel to steer. Testing confirmed the functionality of the pusher; further improvements to the device are recommended so that it may be used by an institution or individual.


History And Future Of Rehabilitation Robotics, Christopher Frumento, Ethan Messier, Victor Montero Mar 2010

History And Future Of Rehabilitation Robotics, Christopher Frumento, Ethan Messier, Victor Montero

Assistive Technology Resource Center Projects

With recent technological advances it has become possible to develop advanced artificial limbs for people with disabilities. This report gives a brief history of the field of Rehabilitation Robotics, and then reviews eight currently produced (either experimentally or commercially) robotic devices designed to assist patients with limb loss or in need of skeletal-muscular assistance. After detailing the use and operation of each device, this report assesses each device on the basis of eight criteria: cost, accessibility, maintainability, training, adaptability, safety, environmental concerns and technological possibility. Each device was given a ranking based on those criteria, and on the basis of ...


Assistive Technology Attrition: Identifying Why Teachers Abandon Assistive Technologies, Michael Edward Sharpe Jan 2010

Assistive Technology Attrition: Identifying Why Teachers Abandon Assistive Technologies, Michael Edward Sharpe

CCE Theses and Dissertations

The study surveyed a sample of K-12 teachers who had used assistive technology (AT) in the classroom to determine answers to five research questions. These were, (1) why the teachers adopted AT, (2) their attitudes and perceptions about its value, (3) challenges they have experienced in adopting AT, (4) whether they have discontinued or decreased use of AT, and, if so, (5) the factors that led to this result.

The study used both quantitative and qualitative methods. For the quantitative aspect, an online survey instrument was developed to answer five research questions. Participants were teachers who had used AT in ...


Possibilities With Assistive Technology, Center For Persons With Disabilities Oct 2009

Possibilities With Assistive Technology, Center For Persons With Disabilities

Blog Posts

No abstract provided.


Assistive Technology For Low Vision Training, Center For Persons With Disabilities Sep 2009

Assistive Technology For Low Vision Training, Center For Persons With Disabilities

Blog Posts

No abstract provided.


Online Training Presents Hi-Tech Assistive Technology, Center For Persons With Disabilities Sep 2009

Online Training Presents Hi-Tech Assistive Technology, Center For Persons With Disabilities

Blog Posts

No abstract provided.


Optimizing The Wpi Assistive Technology Resource Center: Operation And Management, Stoyan Hristov, Kelsey Mawhiney, Zachary Wilson May 2009

Optimizing The Wpi Assistive Technology Resource Center: Operation And Management, Stoyan Hristov, Kelsey Mawhiney, Zachary Wilson

Assistive Technology Resource Center Projects

The Assistive Technology Resource Center (ATRC) at the Worcester Polytechnic Institute (WPI) originated with the intent to fill the need for a regional, specialized assistive technology hub, which would be a source for the technical information required in order to create customized assistive technology devices. As time has progressed, the Center has expanded and has aided many individuals with disabilities. This was done by creating new solutions to disability‐related issues that were not addressed in the past, primarily by designing new devices or modifying existing ones. After ten years of operation, it became necessary to re‐evaluate the operation ...


Shriners In Salt Lake City Joins With Cpd's Assistive Technology Lab To Get Kids Moving, Center For Persons With Disabilities May 2009

Shriners In Salt Lake City Joins With Cpd's Assistive Technology Lab To Get Kids Moving, Center For Persons With Disabilities

Blog Posts

No abstract provided.