Pneumatic Doming Actuator for Switchable Vertical Climbing Adhesion
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Solution Overview
Problem
Current soft robotics face challenges in designing climbing robots that can operate on vertical surfaces with strong and switchable adhesion, as existing solutions often require rigid components and struggle with stability and load-carrying capabilities, especially in harsh environments.
Innovation Solution
A pneumatic-actuated multifunctional doming actuator is developed, featuring a cylindrical enclosure with a spiral elongate tube and flexible elastomer construction, allowing for rapid switchable adhesion and detachment on various surfaces, including vertical and underwater environments, using positive pressure to deform into a dome shape for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soft robots use highly deformable soft materials for inherent compliance and durability, then safety and adaptability in interaction with humans and environment are improved, but ability to achieve strong and switchable adhesion on vertical surfaces deteriorates
Solution Approach 1:
The patent changes the physical state and pressure parameters of the soft robot body to achieve adhesion. By controlling internal pressure and deformation parameters, the robot transitions between adhesive and non-adhesive states, enabling vertical surface operation while maintaining soft material compliance
Solution Approach 2:
The patent implements dynamic adhesion control through real-time adjustment of soft body deformation. The robot can rapidly switch between adhesive and non-adhesive states by dynamically changing its physical configuration, enabling climbing and detachment operations on vertical surfaces
2Ease of operation
If soft robots are designed with rigid components to achieve strong adhesion on vertical surfaces, then adhesion capability is improved, but safety in interaction with environment and ability to survive collision from falling deteriorates
Solution Approach 1:
The patent achieves strong adhesion through controlled parameter changes in soft material deformation and internal pressure, eliminating the need for rigid components. The soft robot maintains compliance while achieving sufficient adhesion force for vertical surface operation
Solution Approach 2:
The patent uses pneumatic actuation to control soft body deformation and adhesion. By regulating internal gas pressure, the robot achieves switchable adhesion on vertical surfaces while maintaining a completely soft structure for safety and collision survivability
3Ease of operation
If soft robots use conventional locomotion methods on horizontal surfaces, then ease of movement is improved, but ability to operate on vertical surfaces and counter gravity deteriorates
Solution Approach 1:
The patent implements dynamic adhesion control that allows the robot to transition from horizontal to vertical locomotion. By dynamically adjusting adhesion strength through soft body deformation, the robot can operate on various surface orientations while maintaining ease of movement
Solution Approach 2:
The patent creates a universal locomotion system that functions on both horizontal and vertical surfaces. The same soft robotic body with controlled adhesion capability can perform crawling on horizontal surfaces and climbing on vertical surfaces, greatly expanding operational versatility
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
The soft robot achieves strong, stable, and switchable adhesion on diverse surfaces, enabling efficient climbing and load-carrying capabilities on smooth, semi-smooth, dry, wet, and slippery surfaces, as well as underwater operations, enhancing its adaptability and survivability in challenging environments.
Implementation Method 1
using positive pressure to deform into a dome shape for secure attachment
Implementation Method 2
flexible, reversibly deformable elastomer
Data Source
AI summary
The present invention relates to a new pneumatic-actuated multifunctional doming actuator. The doming actuator can be used as a doming actuator, which can maintain machine/robotic operation on vertical surfaces without falling. The doming actuators exhibit rapid switchable adhesion/deadhesion on target surfaces upon pressurizing/depressurizing the embedded spiral pneumatic channels. The present invention also relates to novel load-carrying and climbing soft robots using the doming actuators. The soft robots are operable on a wide range of horizontal and vertical surfaces including dry, wet, slippery, smooth, and semi-smooth surfaces. In addition, the doming actuators can be used as a driving actuator for swimming soft robotics and as an actuator for soft grippers.