This is a narrated presentation.��It is recommended that you download�the file and use PowerPoint to watch it.�
ME 4054W Design Projects
A unique opportunity to engage Mechanical Engineering seniors in
a design challenge of your choosing
Topics
1
Students apply learned skills to your project
2
Benefits of participation
https://cse.umn.edu/andersonlabs/equipment
3
Our students can help solve your design challenge
4
Student-led; client-mentored process
5
Client Representative Responsibilities
6
Open-ended projects provide best outcomes
7
Past project examples
8
Past project examples
9
Past project proposal text examples
10
Past project proposal text examples
11
Past project proposal text examples
12
Project Background: Children with cerebral palsy are generally prescribed a plastic ankle-foot orthosis (AFO) to help with their walking. The rotary stiffness and the neutral angle of the AFO is prescribed depending on the characteristics of the child’s gait, but often ends up not being the optimal stiffness or neutral angle for that child. The Durfee Lab is developing a novel technology to semi-automate the AFO prescription process. The Autotuner is a clinic-based AFO that can vary its stiffness and neutral angle under computer control. The long-range goal is to use a machine learning algorithm to tune AFO properties as the child walks in the clinic and then to send a prescription for the optimal properties to the orthotist who can make a traditional plastic AFO that has those properties. In 2018 the Durfee Lab conducted a pilot clinical trial at Gillette Children’s Specialty Healthcare to test the concept using a tethered version of the Autotuner. In 2020, a master’s student completed the design of an untethered version of the Autotuner that has a predicted weight of about 400 grams. A plastic AFO, however, weighs about 250 grams. There is a need to create an Autotuner design that comes in with an all-in weight that is no more than about 300 grams. |
Project Objectives: Using the concept of the 2020 Autotuner design, create a revised design that is significantly lighter while maintaining the performance specifications of the 2020 design. The 2020 design used miniature hydraulics to actuate the tuning. In this project small, onboard electric motors will be used to actuate the tuning. The challenge is to implement the change in a weight-minimal manner. The team will deliver their design as a digital twin implemented as a complete and detailed computer model. Along with the completed design, the team will deliver the results of performance analyses indicating that the design works to its intended purpose and is lighter than the 2020 design. Physical prototyping could, but is not likely to, be part of this project. |
Clients may require that students sign a UMN-approved intellectual property (IP) and/or confidentiality agreement. See the course website (z.umn.edu/me4054, then click on Client Info and Sponsoring a Project) for details. Will you require students to sign the pre-invention IP assignment agreement? Yes ___ No _X_ Not sure ___ Will you require students to sign the non-disclosure agreement? Yes ___ No _X_ Not sure ___ |
Intellectual Property & Confidentiality
They are the only legal agreements the students can be asked to sign.
13
14
For further information contact:
Brad Bohlmann�Senior Design Project Coordinator�Department of Mechanical Engineering�University of Minnesota
bohlmann@umn.edu
Course website is z.umn.edu/me4054
We invite you to join us in this opportunity!
The Client Info page has additional details and a link to the project proposal form.