Wearable Electrostatic Actuators With Hydraulic Amplification and Feedback
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Solution Overview
Problem
Existing wearable actuator systems are limited by size, weight, noise, and setup time, and lack efficient control mechanisms for therapeutic applications such as muscle massage and compression therapy.
Innovation Solution
The development of wearable actuator systems incorporating electrostatic actuators with adjustable internal areas and control modules that provide precise control signals and feedback loops, utilizing flexible and inelastic materials to enhance portability and therapeutic efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional actuator systems are used in wearable applications, then therapeutic functions can be provided, but the systems suffer from large size, excessive weight, and high noise levels
Solution Approach 1:
The patent replaces traditional mechanical actuators with electrostatic actuators that use electrical fields to generate mechanical force. This substitution eliminates complex mechanical linkages, reducing weight and noise while maintaining therapeutic compression and massage functions through electrostatic force generation.
Solution Approach 2:
The patent employs flexible dielectric membranes and thin-film electrodes to create lightweight, wearable actuator structures. These flexible components enable the system to conform to body surfaces while significantly reducing the overall weight and thickness compared to rigid mechanical actuator systems.
2Ease of operation
If traditional actuator systems are used, then therapeutic compression can be applied, but the systems generate excessive noise and require complex setup procedures
Solution Approach 1:
The patent incorporates self-sensing capabilities where the actuators automatically detect contact with the body and adjust their operation accordingly. This self-service feature eliminates the need for complex manual setup procedures, allowing the system to automatically adapt to the user's anatomy and provide appropriate therapeutic compression without extensive configuration.
Solution Approach 2:
The patent implements dynamically adjustable actuator configurations that can modify their compression patterns and intensity in real-time based on feedback from sensors and user response. This dynamic adaptability simplifies operation by automatically optimizing therapeutic parameters rather than requiring manual setup of fixed configurations.
3Volume of moving object
If electrostatic actuators are used to reduce size and weight, then portability is improved, but precise control mechanisms are required to maintain therapeutic efficacy
Solution Approach 1:
The patent divides the actuator system into multiple independent electrostatic actuator elements arranged in arrays or stacks. Each element can be individually controlled, allowing precise spatial and temporal patterns of compression and massage while keeping individual element sizes small. This segmentation enables complex therapeutic patterns to be generated through coordinated activation of multiple simple units.
Solution Approach 2:
The patent integrates feedback mechanisms including force sensors, position sensors, and user response monitoring to create closed-loop control systems. This feedback enables the control module to automatically adjust actuation parameters such as voltage, frequency, and duration to maintain optimal therapeutic efficacy while using compact electrostatic actuators with fewer mechanical 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 systems achieve reduced size and weight, improved ease of use, and enhanced therapeutic benefits through adjustable actuation patterns and self-sensing capabilities, providing accurate pressure application and user feedback.
Implementation Method 1
wearable actuator systems incorporating electrostatic actuators with adjustable internal areas and control modules
Implementation Method 2
Hydraulically Amplified Self-Healing Electrostatic Transducers
Data Source
AI summary
Wearable actuator systems are disclosed herein. The wearable actuator system may include an active layer comprising a plurality of actuators, each actuator having a deformable shell that defines an enclosed internal cavity, a fluid dielectric contained within the enclosed internal cavity, a first electrode disposed over a first side of the enclosed internal cavity, and a second electrode disposed over a second side of the enclosed internal cavity. The system further includes an interface layer and a fastener, wherein the active layer and the fastener form an enclosed shape having an internal area, and wherein a size of the internal area of the enclosed shape is adjustable using the fastener.