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Robotics & Mechanical Fabrication Project

Rough Terrain Vehicle Using Rocker Bogie Mechanism.

Advanced six-wheel rocker-bogie rover featuring passive suspension, continuous wheel-ground contact and exceptional obstacle-climbing ability. Complete working model with fabrication, project report, PPT and viva support for BE, B.Tech, Diploma and MTech students.

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Rough Terrain Vehicle Using Rocker Bogie Mechanism Project Report

& Key Components & Technology

Core mechanical, electronic and robotic parts used in the Rough Terrain Vehicle Using Rocker Bogie Mechanism fabrication project.

Rocker Arms DC Geared Motors Bogie Links Differential Bar Chassis Frame Six Wheels Motor Drivers Terrain Adaptation
Rough Terrain Vehicle Using Rocker Bogie Mechanism fabrication setup

Rough Terrain Vehicle Using Rocker Bogie Mechanism

Robotics & Mechanical fabrication final year project with complete documentation support.

Conventional four-wheel vehicles lose traction and stability when climbing obstacles larger than wheel diameter. The rocker-bogie suspension, originally developed for NASA Mars rovers, keeps all six wheels in continuous contact with the ground while climbing rocks, steps and uneven surfaces.

This project fabricates a six-wheeled rough-terrain vehicle with passive rocker-bogie linkages and a differential bar. Independent or paired DC motors drive the wheels, enabling the vehicle to traverse obstacles up to 1.5 times the wheel diameter without active suspension control — an outstanding mechanical engineering demonstration.

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Abstract

The rocker-bogie mechanism is a passive suspension system that maintains wheel contact and vehicle stability on highly uneven terrain. It consists of two rockers (one on each side) connected by a differential bar, with bogies attached to the rockers that carry the front and middle wheels.

This project designs and fabricates a six-wheeled rough-terrain vehicle based on the rocker-bogie principle. The passive linkages allow the chassis to remain relatively level while the wheels conform to obstacles, providing superior climbing ability and traction compared to rigid or simple independent suspensions.

It is an ideal final-year project for Mechanical, Mechatronics and Robotics students, combining linkage kinematics, structural design, motor integration and experimental validation of terrain performance.

Working Principle

  • Two rocker arms pivot relative to the chassis and are linked by a differential bar.
  • Each rocker carries a bogie that holds the front and middle wheels; rear wheels are mounted on the rockers.
  • When one side climbs an obstacle, the differential bar averages the motion so the opposite side compensates.
  • All six wheels remain in contact, distributing load and maximizing traction.

Advantages

  • Excellent obstacle climbing (up to ~1.5× wheel diameter).
  • Passive system — no active sensors or actuators required for suspension.
  • High stability and continuous ground contact on rough terrain.
  • Proven concept used in planetary exploration vehicles.

Challenges

  • Precise fabrication and alignment of rocker, bogie and differential pivots.
  • Weight distribution and low center of gravity for tip-over resistance.
  • Motor torque and wheel size selection for climbing performance.
  • Minimizing friction and play in multiple rotating joints.

Technical Specifications

Parameter Details
SuspensionPassive Rocker-Bogie with Differential Bar
WheelsSix driven or partially driven wheels
Drive MotorsDC Geared Motors (12V) with L298N / BTS7960 drivers
ControllerArduino Uno / Mega (optional for speed & steering control)
Power Supply12V Li-ion / Lead Acid Battery
ChassisAluminium / Mild steel frame with rocker & bogie linkages

What We Provide

ProjectsatBangalore offers complete support for the Rough Terrain Vehicle Using Rocker Bogie Mechanism Project including working fabrication, project report, PPT, block diagram, viva questions, and demonstration guidance for BE, B.Tech, Diploma, and MTech students in Bangalore.

Working Fabrication
Project Report
PPT Presentation
Block Diagram
Viva Support
Demo Guidance