Robot platform

Robot dogs

One legged platform for guiding, delivery and inspection

Legged robots can climb stairs, step over kerbs and walk where wheels cannot. With different sensors and software, the same quadruped can guide a person, carry a load or inspect a plant room.

Teams use the club's quadruped platforms, and later the robot dog the club builds itself, to develop one application at a time, from a first demonstration on campus to a reliable system.

Type
Robot platform
Applications
Guide dog, delivery, inspection, search and rescue
Key skills
Legged locomotion, perception, path planning, human–robot interaction
Who can lead
Tier 1 and Tier 2 members, by proposal

Applications

Each application is a possible project.

Guide dog

Guiding visually impaired people along pavements and indoor routes, detecting obstacles, kerbs and stairs, and giving clear feedback through a handle.

Delivery

Carrying parcels and supplies for the last hundred metres, including up and down stairs that wheeled robots cannot use.

Inspection and patrol

Routine checks in plant rooms, tunnels and substations: reading gauges, listening for faults and reporting changes.

Search and rescue

Moving through rubble and rough ground, as in the RoboCup Rescue league.

Engineering foundations

Two ideas every legged-robot team needs.

Static stability

\[\mathbf{p}^{xy}_{\text{CoM}} \in \operatorname{conv}\{\mathbf{p}^{xy}_{\text{foot},i}\}\]

At low speed, the centre of mass must stay inside the polygon formed by the feet on the ground.

Joint torques from foot force

\[\boldsymbol{\tau} = J(\boldsymbol{\theta})^{\top}\,\mathbf{F}\]

Used to control how hard each foot pushes, for carrying a load or walking on stairs.

Photos

A quadruped robot walking on the PolyU lawn
A quadruped robot walking on the PolyU lawn.
A quadruped robot on campus
A quadruped robot on campus.
Rough-terrain training in simulation
Rough-terrain training in simulation.