Soft Robotic Gripper Control for Adaptive Pick-and-Place
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Solution Overview
Problem
Conventional robotic grippers are expensive, inflexible, and unable to handle objects of varying sizes and shapes effectively, especially in uncertain environments, due to their rigid construction and inability to adapt to different weights and sizes.
Innovation Solution
The development of soft robotic actuators made from elastomeric materials that can be inflated or deflated to change shape, allowing for adaptive grasping and motion, including bending, twisting, and extending, which can conform to objects and distribute force over a larger surface area, reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional rigid robotic grippers are used, then structural strength and precision are improved, but adaptability to varying object sizes and shapes deteriorates
Solution Approach 1:
The robotic gripper transitions from a static rigid structure to a dynamic soft structure that can continuously change its configuration. The soft actuators with variable stiffness allow the gripper to adapt its shape and compliance in real-time to match the geometry and weight of different objects, resolving the contradiction between structural strength and adaptability.
Solution Approach 2:
The gripper employs actuators with variable stiffness parameters that can be adjusted based on object characteristics. By changing the stiffness parameter of the soft actuators, the system maintains structural strength when needed while becoming compliant and adaptive when handling diverse objects, thus resolving the contradiction.
2Manufacturing precision
If rigid robotic grippers are used, then manufacturing precision is improved, but ease of manufacture and cost-effectiveness deteriorates
Solution Approach 1:
The gripper uses soft robotic actuators composed of flexible elastomeric materials instead of rigid metal components. These soft shells can be manufactured using additive manufacturing or molding processes, which are more cost-effective and simpler than precision machining of rigid components, while still achieving the required functional precision.
Solution Approach 2:
The soft robotic actuators use inexpensive elastomeric materials that can be rapidly prototyped and manufactured at low cost. This approach replaces expensive rigid components with cheaper soft materials that achieve the desired performance, improving ease of manufacture and cost-effectiveness.
3Extent of automation
If conventional robotic systems are used, then automation level is improved, but ability to handle uncertain environments deteriorates
Solution Approach 1:
The soft robotic gripper performs self-adjustment and self-adaptation through its inherent compliance and variable stiffness characteristics. The system automatically adjusts its mechanical properties to match the object being grasped without requiring complex sensors or control algorithms, maintaining high automation while improving reliability in uncertain environments.
Solution Approach 2:
The dynamic nature of the soft actuators allows the automated system to adapt to environmental uncertainties by continuously adjusting its configuration. This dynamic compliance enables the robotic system to maintain reliable performance when handling objects with varying properties in uncertain environments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Soft robotic actuators provide a cost-effective, adaptable, and safe solution for handling objects of various sizes and shapes, improving the efficiency of robotic systems in environments with uncertainty, such as warehouses and recycling centers, by enabling precise grasping and manipulation without damaging the objects.
Implementation Method 1
soft robotic actuators made from elastomeric materials that can be inflated or deflated to change shape
Implementation Method 2
soft robotic actuators made from elastomeric materials... distribute force over a larger surface area
Data Source
AI summary
Exemplary embodiments relate to user-assisted robotic control systems, user interfaces for remote control of robotic systems, vision systems in robotic control systems, and modular grippers for use by robotic systems. The systems, methods, apparatuses and computer-readable media instructions described interact with and control robotic systems, in particular pick and place systems using soft robotic actuators to grasp, move and release target objects.