Electroadhesive Textile Clutch Interface Using AC Charge Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing apparel support systems lack adaptability to varying activity levels and environments, leading to discomfort and inefficiency, with issues such as bulk charge accumulation, dielectric absorption, and inadequate support during dynamic movements.
Innovation Solution
The integration of an electroadhesive clutch system within apparel, utilizing alternating current signals to manage bulk charges, reduce dielectric absorption, and provide adjustable support through electroadhesive clutches with sensors for dynamic adjustment based on activity data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional support systems are used in apparel, then structural simplicity is maintained, but adaptability to varying activity levels and environments deteriorates
Solution Approach 1:
The support system transitions from static to dynamic through electroadhesive clutches that can be actively controlled. The clutches are positioned at multiple locations along the apparel article and can be independently actuated based on sensor feedback, allowing the support level to dynamically adapt to varying activity levels and environmental conditions.
Solution Approach 2:
Traditional mechanical fastening systems are replaced with electroadhesive clutches that use electrostatic forces for attachment and detachment. This substitution enables more precise and responsive control of support levels without complex mechanical mechanisms, as the clutches can be activated or deactivated electrically based on real-time sensor data.
2Adaptability or versatility
If electroadhesive systems are used to provide dynamic support, then adaptability improves, but bulk charge accumulation and dielectric absorption worsen
Solution Approach 1:
The electroadhesive clutches are driven by alternating current (AC) signals rather than direct current (DC). This periodic action causes the polarity of the electrodes to alternate, preventing the accumulation of bulk charges in the dielectric material. The AC drive signal ensures that any charges that begin to accumulate are periodically reversed and neutralized.
Solution Approach 2:
The system uses AC signals with varying frequencies and amplitudes to control the electroadhesive clutches. By changing the parameters of the drive signal, the system can optimize performance while minimizing dielectric absorption effects. The alternating nature of the signal fundamentally changes how charges behave in the dielectric compared to DC operation.
3Reliability
If electroadhesive clutches are used for support, then support effectiveness during dynamic movements improves, but energy consumption worsens
Solution Approach 1:
Sensors are integrated into the apparel article to detect the wearer's activity level, movement dynamics, and environmental conditions. This feedback is processed by a controller that selectively activates only the electroadhesive clutches needed for current conditions, rather than keeping all clutches engaged continuously. This reduces energy consumption while maintaining effective support during dynamic movements.
Solution Approach 2:
The system applies electroadhesive force only partially or selectively rather than uniformly across all clutches. Based on sensor feedback, the controller activates only the specific clutches required for the current activity level and movement type, minimizing energy consumption while providing adequate support where needed.
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 system provides enhanced comfort and performance by dynamically adjusting support levels in response to activity changes, minimizing bulk charges and dielectric absorption, while maintaining effective support during dynamic movements.
Implementation Method 1
an electroadhesive clutch system...utilizing alternating current signals to manage bulk charges, reduce dielectric absorption, and provide adjustable support through electroadhesive clutches
Implementation Method 2
utilizing alternating current signals to manage bulk charges, reduce dielectric absorption
Data Source
AI summary
An electroadhesive clutch can be coupled to a textile. The clutch can include a first electrode assembly comprising a first conductive member, and a second electrode assembly comprising a second conductive member overlaying in part the first conductive member. In an example, the clutch includes or uses an elastic encasing within which the first and second electrode assemblies are positioned. The elastic encasing can form a first bond with the first conductive member at a first location of the elastic encasing and a second bond with the second conductive member proximate a second location of the elastic encasing different than the first location.