Developed by Boston Dynamics, the BigDog robot can walk, run, climb slopes and even carry heavy loads. Powered by an engine, the rough-terrain robot has four animal-like legs that are equipped with flexible elements for absorbing shock as well as recycling energy from one step to the other. As the name suggests, the robot’s size is similar to that of a large dog i.e. it is around 3 feet long and 2.5 feet tall with a weight of about 240 lbs.
The robot’s movements, sensor processing and user-interaction are monitored and controlled by its on-board computer. The control system helps with keeping BigDog balanced while managing locomotion on various terrains. The locomotion sensors include joint force, joint position, ground contact and load, a gyroscope as well as a stereo vision system and LIDAR system (Light Detection And Ranging).
Apart from this, BigDog also has a set of sensors to monitor its internal state by checking hydraulic pressures, oil temperature, battery charge and engine functions.
BigDog can run as fast as 4 mph and climb slopes up to thirty-five degrees. The robot is also capable of walking across rubble, climbing hiking trails, walking in water and snow as well as carrying loads of up to 340 lbs.
What is most impressive of BigDog is that it can maintain its balance on slippery or uneven surfaces. Even when pushed aside or when it is losing grip on icy surfaces, BigDog recovers and stays on its feet.
Boston Dynamics
