Slide 2.1 — Platform Evolution — Modular Drive Architecture

Electronic / Mechanical
Handimover — Scalable Drive Architecture

From assist module to full dynamic 3WD platform.

Level 1 — Assisted Front Drive

  • Electrified front drive module

  • Mounted to a standard wheelchair

  • Mechanical lift of front casters

  • Handlebar steering

Purpose: Controlled propulsion
Complexity: Low
Principle: Add drive — keep structure simple

 

✓
 

 

Level 2 — Terrain Traction Upgrade

  • Same front drive module

  • Add two powered rear wheels

  • Coordinated drive distribution

  • Improved load transfer

Purpose: Terrain capability through traction
Complexity: Medium
Principle: Add grip — not speed

 

✓

 

Level 3 — Rear Drive + Joystick Control

  • Two powered rear wheels

  • Joystick-controlled drive

  • No front lift

  • No powered front wheel

Princip: Change control interface
Focus: Human–machine interaction

 

Level 4 — Mechanical Terrain Lift

  • Level 3 architecture

  • Mechanical lift (~60 mm)

  • Reduced caster drag

  • Improved obstacle clearance

Princip: Add geometry
Focus: Passive terrain adaptation

Level 5 — Active Front Drive Integration (Full 3WD)

  • Powered rear wheels

  • Powered auxiliary front wheel

  • Coordinated torque distribution

  • Joystick + actuator logic

Princip: Add coordinated control
Focus: Dynamic stability architecture

The Architecture behind the levels

  • Drive

  • Traction

  • Control Interface

  • Geometry

  • Coordinated Intelligence