Motorized Assist-Resist Training System with Dynamic Mode Switching
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Solution Overview
Problem
Existing training devices are limited in their ability to provide simultaneous and instantaneous modulation of resistance and assistance, which hampers effective strength and endurance training, particularly in sport-related activities and rehabilitation settings.
Innovation Solution
A strength and endurance training system that includes a motorized assist-resist system controlled by a computer system, capable of switching between resistive, assistive, and negligible force modes based on distance measurements and external force inputs, allowing for dynamic adjustment of resistance and assistance during training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a weight is raised as the individual moves away from the system to provide resistance, then resistance training is enabled, but assistance cannot be provided when the individual moves toward the system
Solution Approach 1:
The system dynamically switches between passive resistance mode (weight-based) and active assistance mode (motor-based) depending on the direction of movement and training requirements. The motor controller receives signals from the control system to activate assistance when needed, transforming a static resistance mechanism into a dynamic dual-mode system that adapts to varying training phases.
Solution Approach 2:
The training system integrates multiple functions into a single apparatus: it can provide resistance during the away-stroke phase using the weight, and provide assistance during the toward-stroke phase using the motor. This multi-functionality allows the same system to support both strength training (resistance) and endurance/rehabilitation training (assistance) without requiring separate equipment.
2Force
If assistance is provided when the individual moves toward the system, then endurance training is enabled, but resistance cannot be provided when the individual moves away from the system
Solution Approach 1:
The system dynamically transitions between motor-driven assistance mode and weight-driven resistance mode based on movement direction. The control system detects the phase of motion and activates the appropriate force generation mechanism, enabling the system to adapt its function in real-time rather than being locked into a single mode.
Solution Approach 2:
The apparatus serves dual purposes: the motor provides controlled assistance for endurance and rehabilitation exercises when moving toward the system, while the weight provides resistance for strength training when moving away. This universal design allows one system to support multiple training objectives that previously required separate equipment.
3Adaptability or versatility
If separate devices are used for resistance and assistance training, then specialized training functions are available, but device complexity and space requirements increase
Solution Approach 1:
The patent combines resistance training functionality (weight-based) and assistance training functionality (motor-based) into a single integrated system. The motor, drum, and weight work together in a unified mechanism where the motor can either overcome or assist the weight's gravitational force, eliminating the need for separate resistance and assistance devices.
Solution Approach 2:
By designing a single system that can operate in both resistance mode and assistance mode, the patent reduces the number of separate devices needed. The same motor, drum, and connecting member structure serves multiple training purposes, simplifying the overall equipment requirements while maintaining specialized training capabilities.
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
Enables more effective and adaptable training by providing tailored resistance and assistance forces in real-time, enhancing the training experience and rehabilitation outcomes by accommodating varying user needs and movements.
Implementation Method 1
a first motor that is activated and deactivated by a first motor controller
Data Source
AI summary
A strength and endurance training system. The system includes a first assist-resist system, which includes a first motor that is activated and deactivated by a first motor controller, a first drum coupled to the first motor, a first connecting member provided between the first drum and a coupling device which is attachable to an object/individual, and a computer system configured to use as input one or more of i) a measurement of distance of the coupling device form the first assist-resist system, ii) a predetermined strength value, and iii) a measurement of external force applied to the coupling device by the individual and thus operate the first assist-resist system in one of i) a resistive mode, wherein a resistive force is applied to the coupling device when the coupling device moves away from the first assist-resist system, ii) an assistive mode, wherein an assistive force is applied to the coupling device when the coupling device moves towards the first assist-resist system, and iii) a bypass mode, wherein a negligible force (between about 0 N-about 5 N) is applied to the coupling device.