Mechatronic Design

Electric Scooter

Design of an electric scooter focused on user-centered design, structural integrity, manufacturability, and modular electronic systems.

Role · Developer

Overview

This project focused on the design and development of an electric scooter as part of a mechatronic design course. The process followed a complete engineering methodology including user needs analysis, system architecture, mechanical and electronic design, simulation, and manufacturability evaluation.

The project integrated CAD modeling, structural analysis, circuit design, and simulations to create a functional and realistic design tailored for urban and off-road use.

What it does

  • Max speed over 25 km/h

  • Modular structure using aluminum profiles

  • Foldable mechanism for easy storage

  • Display for battery level and speed feedback

  • Off-road capable wheels

  • Manual and electronic braking systems

  • Cost-effective design (estimated under $12,000 MXN)

Design Methodology

  • User-Centered Design: Needs analysis using surveys and translation of requirements via QFD and House of Quality
  • System Modeling: Functional decomposition, black-box representation, and system flow diagrams
  • Concept Evaluation: Morphological matrix for idea generation and Pugh chart for selection
  • Mechanical Structure: Modular frame based on aluminum extrusions, foldable design with reinforced hinges
  • Electrical System: Simulated in Proteus, including throttle control, MOSFET-based driver, and LCD feedback display
  • Simulation and Validation:
  • Static structural FEA (Von Mises, displacement)
  • Modal analysis to identify natural frequencies (69.5 Hz to 325.5 Hz)
  • Manufacturing Plan: Designed for low-cost fabrication using conventional tools, avoiding CNC dependence

Specifications

Stack
  • SolidWorks for 3D modeling and assembly
  • FEA simulation
  • Proteus for circuit simulation
  • Arduino for speed control and display interface
  • Lead-acid or Li-ion battery packs (18650 cells)
  • DC brushed or BLDC in-wheel motors (24V–48V, 250–500 W)
Domain
robotics · control · electronics · cad

Gallery