Unitree A2: Robust robot dog for heavy loads runs long and fast
Untitree A2 Stellar Hunter can carry loads of up to 100 kg and is extremely robust and agile at the same time. This makes it suitable for a wide range of tasks.
The Unitree A2 Stellar Hunter breaks through a pane of glass to demonstrate its robustness.
(Image: Unitree Robotics)
The Chinese robotics company Unitree Robotics has developed the A2 Stellar Hunter, a four-legged robot dog that can carry heavy loads of up to 100 kg when stationary, is robust and can also withstand high speeds for a long time. The A2 is also extremely agile, as a video from Unitree shows.
The 0.82 m long A2 weighs a light 37 kg including two 9000 mAh batteries. The walking robot is so robustly built that it can also carry heavy loads: 100 kg when stationary and 25 kg when moving forward. However, a video from Unitree shows that it can also carry 30 kg while walking. It can even do this over a longer distance of around 12.6 km. Afterwards, the robot's batteries had to be recharged or replaced. The batteries can also be changed during operation.
Without a payload, the A2 can run for a maximum of five hours at a time. This corresponds to a range of around 20 km. It should last a maximum of three hours with a full load. The top speed is around 13.3 km/h. That is very fast. By way of comparison, the Spot robot dog from Boston Dynamics only reaches 5.8 km/h.
Empfohlener redaktioneller Inhalt
Mit Ihrer Zustimmung wird hier ein externes YouTube-Video (Google Ireland Limited) geladen.
Ich bin damit einverstanden, dass mir externe Inhalte angezeigt werden. Damit können personenbezogene Daten an Drittplattformen (Google Ireland Limited) übermittelt werden. Mehr dazu in unserer Datenschutzerklärung.
The speed of the A2 can be increased even further. This is because the robot dog can also be equipped with wheels. This type of locomotion is more energy-efficient and generally also faster. Unitree is currently talking about a speed of up to 18 km/h. However, Unitree does not provide any information on how the wheeled robot performs in terms of range, running time and top speed.
Autonomously agile
Unitree has equipped the A2 Stellar Hunter with impressive actuators for fast, responsive movements. They provide the robot with twelve degrees of freedom. The maximum torque is a high 180 Nm. This allows the robot dog to overcome obstacles up to a height of around one meter in climbing mode. It can climb steps up to a height of 0.3 m as standard.
For perception and orientation, the A2 has an HD camera at the front as well as lidar modules at the front and rear, so that all-round perception is possible. The front camera is supported by an LED lamp that illuminates the surroundings in the dark. A microphone array for sound recording and a loudspeaker for sound output are also included.
The (autonomous) functions of the A2 Stellar Hunter are implemented via an 8-core CPU. There is also an Intel Core i7, although this can only be used for programming the robot. A 4G module is available as an option. Otherwise, a connection is established via Wi-Fi 6 and Bluetooth 5.2. Unitree also offers a GPS module as an option.
Videos by heise
The Stellar Hunter robot dog is available in two versions: A2 and A2-Pro. The features and performance data are largely identical for both robots. However, a High Computing Power Expansion Dock is available for the Pro version, which increases the computing power. The wheels are available as an option. Unitree will provide information on prices on request.
(olb)
