A Soft Robotic Gripper with Hybrid Structure and Grasping Reliability

HKU
Overview

A gripper combining a soft linear pneumatic actuator with a rigid joint to offer robust and compliant grasping

  • A Soft Robotic Gripper with Hybrid Structure and Grasping Reliability 0
  • A Soft Robotic Gripper with Hybrid Structure and Grasping Reliability 1
  • A Soft Robotic Gripper with Hybrid Structure and Grasping Reliability 2
Commercialisation opportunities
Licensing
Problem addressed

A major limitation in the adoption of robot manipulation systems is the lack of flexible gripping mechanisms as existing robotic systems are unable to automate variable objects and unstructured tasks.

Innovation
  • The invention describes a distinctive method to realize robust and compliant grasping, combining a soft linear pneumatic actuator with a rigid joint.
  • The whole system considers design affordability, with a modular finger structure easily modified into different end-effector structures depending on the working requirement.
  • The soft actuator provides inherent compliance. The pin joint provides the structural rigidity. The soft-rigid-hybrid mechanism is a good solution for adaptable and robust grasping.
Key impact
  • Lightweight and high payload ratio (25x payload to self-weight)
  • Outstanding grasping dexterity with 4 different grasping modes
  • Low-cost design and simple maintenance
  • Compliant soft joint design, hybrid structure for improved stability and rigidity and pneumatic drive with control electronics
Application
  • Service robot to deal with delicate objects
  • Medical robots to rehabilitate patients
  • Wearable robot to interact with human, etc.
The University of Hong Kong (HKU)

Founded in 1911, The University of Hong Kong (HKU) is the first and oldest institution of higher education in Hong Kong. For over a century, the University has dedicated itself to creating knowledge, providing education, and serving society. Today, HKU has an established worldwide reputation for being a research-led comprehensive University with ten Faculties and a strong commitment to intellectual freedom, liberty and diversity. HKU has a proud record of academic recognition in researches through honours and awards received from both local and international bodies.

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