AgiBot OmniHand 3 Ultra-M Dexterous Hand

AgiBot OmniHand 3 Ultra-M with 21 Active Degrees of Freedom

AgiBot OmniHand 3 Ultra-M is a robotic multi-joint hand for humanoid platforms, research in physically embodied artificial intelligence, and performing complex contact manipulations. The kinematic system features 21 active degrees of freedom, direct joint drive, and an advanced tactile system with sensors on the fingertips and palm. The design is intended for precise work with physical objects, collecting contact data, training robotic systems, and performing bimanual operations.

Advantages of AgiBot OmniHand 3 Ultra-M

• 21 active degrees of freedom. Multi-joint kinematics provide independent control of finger movements and allow for various types of grips for working with objects of complex geometry.
• Direct joint drive. Drives directly control joint movement, and encoders transmit data about their position in real-time. Positioning repeatability is ±0.2 mm.
• Optical tactile sensors on fingers. The sensor system determines three-dimensional force vectors during contact with an object. The measurement range is 0–30 N, and the deformation detection accuracy is 0.08 mm.
• Three-dimensional tactile sensor in the palm. The sensor area registers contact with the inner surface of the hand and complements data from the fingers during gripping, holding, and changing the position of an object.
• Data collection for robot training. Data on joint positions, loads, and contact can be used for training control algorithms, practicing manipulations, and researching physically embodied artificial intelligence.
• Stable operation under prolonged load. During continuous operation, the surface temperature remains within 40–45 °C without degrading performance. The test resource is 500,000 cycles.
• Load capacity up to 5 kg. The hand is designed to grip, hold, and move objects and tools weighing up to 5 kg.

Active Degrees of Freedom and Direct Drive

OmniHand 3 Ultra-M has 21 active degrees of freedom, providing separate control of fingers and joints. The kinematic scheme allows for forming complex hand positions, changing grip configurations, and performing precise manipulations with objects of various shapes.

Each active joint is equipped with a direct drive. Encoders continuously register joint positions and transmit current data to the control system. Positioning repeatability in the working area is ±0.2 mm.

The combination of multi-joint kinematics, direct drive, and position control is suitable for researching complex robotic manipulations, adaptive gripping, and collecting training data during physical interaction with objects.

Three-Dimensional Tactile Perception

Optical tactile sensors are installed on the fingertips of the OmniHand 3 Ultra-M, registering deformation of the contact surface and determining the direction and magnitude of mechanical load in three dimensions. The force measurement range is 0–30 N, the resolution is 0.005 N, and the deformation detection accuracy is 0.08 mm.

Sensors allow for recognizing contact, sliding, and interaction with edges or surfaces of objects. The spatial resolution is 0.04 mm. A separate three-dimensional tactile sensor with 300 tactile points is located in the palm. The sensor registers contact with the inner surface of the hand and complements information obtained from the fingers. The combination of tactile data and joint position information supports precise gripping, component installation, transferring objects between manipulators, and other operations requiring physical contact control.

Load and Design

OmniHand 3 Ultra-M has dimensions close to the size of a human hand. The dimensions are 189.5 × 88.5 × 40 mm, and the weight is 630 g. The permissible load reaches 5 kg, allowing for working with parts, objects, and tools of various weights. Compact dimensions combined with a large number of controlled joints are suitable for humanoid robots and manipulators focused on precise operations and interaction with objects in a human environment.

Robot Training and Contact Data Collection

OmniHand 3 Ultra-M supports data collection during physical interaction with objects. The system can register joint positions, finger movements, contact loads, and tactile signals during manipulations.

Encoders record the positions of active joints, and tactile sensors transmit information about force, deformation, and the nature of contact. The obtained data can be used for training robots to grip, hold, move, and transfer objects.

OmniHand 3 Ultra-M is also suitable for bimanual scenarios, where two robotic hands work in coordination with one object or perform interrelated operations.

The hand can be used for remote control, recording operator demonstrations, forming training data sets, and transferring developed algorithms from a simulation environment to a physical robotic platform.

Integration with AGIBOT Robotic Platforms

OmniHand 3 Ultra-M is recommended for AGIBOT A3 series robots. The configuration is suitable for dual-arm robotic systems, contact manipulation research, and training algorithms based on data obtained during physical interaction with objects.

For A2, G2, and X2 series platforms, other modifications of OmniHand or OmniPicker grippers are provided. The possibility of installing OmniHand 3 Ultra-M on a specific platform should be checked considering the mechanical design, electrical connection, and control system configuration. For data transmission, CAN FD and Ethernet interfaces are supported. Software compatibility is determined by the configuration of the robotic platform and the software used.

Applications of AgiBot OmniHand 3 Ultra-M

• Training robotic systems. Collecting data on finger movements, joint positions, and physical contact with objects.
• Bimanual manipulations. Coordinated work of two robotic hands with one or more objects.
• Remote control. Transmitting operator movements to the robotic system and recording demonstrations for further training.
• Forming training data sets. Recording kinematic and tactile parameters during physical operations.
• Laboratory automation. Manipulating equipment, laboratory glassware, samples, and other objects.
• Sorting and moving. Gripping, transferring, distributing, and positioning objects of various shapes.
• Assembly operations. Installing components, positioning parts, and performing precise contact manipulations.
• Working with tools. Gripping and using tools and devices in research and technical scenarios.

Technical Specifications of AgiBot OmniHand 3 Ultra-M

Order AgiBot OmniHand 3 Ultra-M

AgiBot OmniHand 3 Ultra-M is suitable for research centers, universities, laboratories, robotics developers, and system integrators who need a multi-joint robotic hand for precise manipulations, tactile data collection, robot training, and working with physical objects. Our specialists will help select the configuration, check compatibility with the robotic platform, clarify connection methods, equipment, and delivery conditions.