P13031: Jib Transfer Bench

Systems Design

Table of Contents

In this page, we document the process we took from the initial problem defintion to a full Systems Level Design of our solution.


We looked at several products on the market that are similar to what we intend to build. Devices designed for moving a disabled person into the shower emulate the task our design must perform. It should be able to rotate an individual while moving them linearly along a track. The designs we researched are documented in : Benchmarks PDF.

Functional Decomposition

The Functional Decomposition diagram shows the breakdown of functions that the Jib Transfer Bench should perform.

Systems Architecture

By looking at the Jib Transfer Bench at a Systems Level, we identified several sub-systems necessary to be included in the final design:

Concept Development (generation, improvement, selection)

In telephone interviews with our customers, we discussed their requirements and noted their input to better our understanding of the project and what our solution needs to accommodate. Teleconference Notes 12/7/12

After obtaining customer input, we began to brainstorm different solutions, both on a System and Subsystem Level. The following file documents our: Initial Concept Generation

Concept Selection was also an important phase. Since we have several subsystems in our design, we analyzed how all of our brainstormed ideas would fit together. Then, we ranked how we as a team thought each of them would do. We proceeded to iterate this process for several different assemblies of several of our subsystems.

Obviously, we could have had a massive number of concepts to grade. As we went along in the process, we eliminated ideas from our Concept Selection that were deemed not feasible or did not accommodate the customer needs and specifications.

This process is compiled here in our Systems Design Folder/Concept Selection Criteria.xlsx

Two critical subsystems are the Linear and Rotational Motion. For this, separate concept generation was performed to generate more ideas for the method of motionwas performed to try to come up with more ideas.

Risk Assessment

We developed a rolling Risk Assessment Excel spreadsheet, which is looked at and updated at each meeting if necessary. It identifies the possible risks involved with our project, their severity and likeliness, and how to deal with them should they arise. The purpose of this document is to make us aware of any possible issues that could arise and to make sure that we consider them during our design phase.

Systems Design Review

On January 11, 2013, the Systems Level Design was presented to Professor Leipold and Dr. DeBartolo in person. Our customers, Cindy Walker and Gary Pierce, were also in attendance through Skype, and were able to follow our presentation. The Presentation is linked below, as well as the Input that we received from our customers and guides.

The SDR Agenda captures the important points of the SDR Presentation.

The Systems Design Review Presentation is available here in Powerpoint format.

SDR Feedback provided by the customers and our advisers both during and after the presentation is compiled here: Systems Design Review Feedback

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