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Simulation Based Design Study of the Smart Cart ME 6105: Modeling & Simulation Dr. Chris Paredis Harjot Hayer Daniel Lai Laura Raibeck.

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Presentation on theme: "Simulation Based Design Study of the Smart Cart ME 6105: Modeling & Simulation Dr. Chris Paredis Harjot Hayer Daniel Lai Laura Raibeck."— Presentation transcript:

1 Simulation Based Design Study of the Smart Cart ME 6105: Modeling & Simulation Dr. Chris Paredis Harjot Hayer Daniel Lai Laura Raibeck

2 What is the Smart Cart? Motivation:  Harjot’s Senior Design Project Brief Description:  Modeled after a Hydraulic Scissor Lift  Main Objective was to Lift 150 lbs, and to Load onto a Vehicle through a 4-Step Process Smart Cart Video

3 Project Overview Goals of the Design Study: Maximize Usability Minimize Energy Consumption Maximize Performance Design Variables for Study: Size of hydraulic cylinder Input Voltage Hydraulic configuration Measures of Effectiveness: Time to reach height of 1m Energy Consumption (W)

4 Dymola Models Scissor Lift Models (1)

5 Dymola Models Cont. Scissor Lift Models (2)

6 Dymola Models Cont. Hydraulic Model

7 Dymola Models Cont. Complete Model

8 Interesting Results Uncertain Variables were Analyzed in ModelCenter = BAD 2. 1.

9 Problems Encountered Original Design Study  Geometry as a Design Variable  Goals Related to Payload  Scope of study too large Planar Loops/Singularities! Knowledge of Hydraulics Changing one variable in many places  Geometries for all links  Friction in joints

10 What We Learned How to Use Dymola – Steep Learning Curve Organized models are easier to use ModelCenter Modeling preferences is difficult Dealing with uncertainty Don’t leave hydraulics for last


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