Electroadhesive Textile Clutch Using AC Signals for Adaptive Support
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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 technology, coupled with sensors for dynamic adjustment based on activity data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If electroadhesive system uses direct current signals, then strong adhesion force is achieved, but bulk charge accumulation and dielectric absorption occur
Solution Approach 1:
The patent applies periodic alternating current signals instead of direct current to the electroadhesive system. The AC signals are applied in a periodic manner with controlled duty cycles, allowing the electrodes to adhere during active phases and discharge during inactive phases, preventing bulk charge accumulation while maintaining adhesion force during active periods
Solution Approach 2:
The system dynamically adjusts the electrical signal parameters including frequency, amplitude, and duty cycle based on real-time adhesion requirements. This dynamic control allows optimization of adhesion force while preventing charge accumulation by adapting the signal characteristics to current operating conditions
2Strength
If apparel provides maximum support, then comfort during resting is reduced
Solution Approach 1:
The apparel system dynamically adjusts the level of support provided by the electroadhesive electrodes based on detected activity level. During resting periods, the system reduces or disables electroadhesive activation to maximize comfort. During physical activity, the system activates and increases support force to match the mechanical demands of the activity
Solution Approach 2:
The system incorporates sensors that detect activity level and provide feedback to the control system. This feedback loop enables automatic adjustment of electroadhesive activation, transitioning from comfort-oriented mode during rest to support-oriented mode during activity without user intervention
3Adaptability or versatility
If manual adjustment mechanisms are added, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent replaces manual mechanical adjustment mechanisms with an electroadhesive-based adaptive system. Instead of requiring users to manually adjust straps, laces, or fasteners, the system uses electrically controlled electroadhesive forces to dynamically adjust and maintain optimal fit, eliminating complex mechanical adjustment components
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 solution enables adaptive support that maintains comfort and performance across different activities, prevents bulk charge accumulation, and ensures reliable operation in various environments, enhancing user experience by providing real-time support adjustments.
Implementation Method 1
an electroadhesive clutch system within apparel, utilizing alternating current signals to manage bulk charges, reduce dielectric absorption, and provide adjustable support through electroadhesive technology
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.