Short Description

The L30 adopts a tendon-driven transmission system composed of ultra-high-molecular-weight polyethylene (UHMWPE) cables and PTFE tubes. Precise actuation is achieved through a remote motor assembly, enabling coordinated control of five fingers with 17 degrees of freedom and 21 joints (including 1 wrist DOF).

The product features a compact humanoid design matching the size of an adult human palm. While maintaining three degrees of freedom per finger, it significantly improves spatial efficiency and accurately reproduces the multi-joint coordinated movement characteristics of the human hand.

Linkerbot L20 Robot Hand Product Manual

Specification

Degrees of Robot Hand

Size of Robot Hand

Dexterous Hand Finger Range of Motion

 Features

 Biomimetic Drive Architecture

 The L30 adopts a tendon-driven transmission system composed of ultra-high-molecular-weight polyethylene (UHMWPE) cables and PTFE tubes. Precise actuation is achieved through a remote motor assembly, enabling coordinated control of five fingers with 17 degrees of freedom and 21 joints (including 1 wrist DOF).

 The product features a compact humanoid design matching the size of an adult human palm. While maintaining three degrees of freedom per finger, it significantly improves spatial efficiency and accurately reproduces the multi-joint coordinated movement characteristics of the human hand.

High-Precision Force Control

 The system integrates high-resolution encoders and tendon tension control algorithms, combined with an adaptive PID control algorithm for real-time dynamic adjustment.

 This enables a repeatability positioning accuracy of ±0.20 mm, allowing the hand to perform delicate tasks such as:

Screw tightening

Thin-sheet picking

Precision manipulation requiring high accuracy

Load Capacity and Adaptability

 The L30 adopts an opposable thumb configuration combined with an independent force-control system for the four fingers, enabling a maximum grasping force of 10 N.

 High-sensitivity tactile sensor arrays embedded in the fingertips provide object detection capability, allowing the hand to automatically adapt and achieve stable grasping of various irregular objects without manual intervention.

Fast Response Performance

The system offers excellent motion responsiveness. Core movements such as four-finger bending and thumb lateral motion can reach speeds of over 400°/s, while the hand opening and closing time is only 0.2 seconds.

This capability allows the hand to efficiently adapt to high-speed operational environments such as industrial assembly lines, significantly improving overall operational efficiency.

Convenient Control and Integration

The system supports Mini-USB and CAN FD dual communication interfaces, with communication frequencies of up to 500 Hz.

This enables seamless integration with industrial automation equipment and service robot platforms. The architecture allows:

Fast integration with various control systems

Millisecond-level real-time control response

Precise execution of control commands

These capabilities ensure high control reliability and responsiveness in complex operating environments.

Product Functions

Position Control

The system can precisely control the spatial position of the entire hand and each finger joint.

It can smoothly execute predefined trajectory movements, ensuring high accuracy from overall hand motion to fine single-joint adjustments.

This makes it suitable for applications requiring high positional precision, such as:

Precision assembly

Trajectory-based operations

 Speed Control

Finger motion speed can be flexibly adjusted according to task requirements.

High-speed mode improves operational efficiency

Low-speed mode ensures safe and precise manipulation

This allows the system to balance efficiency and operational safety, adapting to a wide variety of task scenarios.

Tactile Feedback (Force Control)

 With fingertip sensors, the system can detect and precisely control the force and torque applied by the fingers in real time.

The system dynamically adjusts the output force to:

Prevent damage to fragile objects caused by excessive force

Prevent object slippage caused by insufficient force

This provides reliable force control for delicate operations such as:

Screw fastening

Thin sheet handling

Precision manipulation

Online Firmware Upgrade

The dexterous hand supports online firmware upgrades via a host computer.

This allows continuous updates of:

Functional modules

Core performance parameters

The capability is ideal for industrial and research environments requiring long-term iteration, ensuring the device remains efficient and up-to-date throughout its lifecycle.

Degrees of Freedom

 The Linker Hand L30 features 17 degrees of freedom and 21 joints, including 17 active joints and 4 passive joints.

 Active joints are powered by high-precision drive units that enable sub-millimeter motion control and complex posture transitions, supporting precise manipulation tasks.

Passive joints utilize biomimetic elastic structures to adaptively adjust force feedback during motion, absorbing impact while reducing system energy consumption.

This active–passive collaborative design ensures human-hand-level dexterity while optimizing power efficiency and structural stability, enabling the hand to adapt to various scenarios such as:

Scientific research testing

Industrial sorting

Medical rehabilitation

Precision manipulation tasks