DC Motor Resistance System for Compact Strength Training
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Solution Overview
Problem
Conventional resistance training systems face challenges such as bulkiness, cost, and safety issues due to the use of gravity weights, and elastometric systems provide limited resistance zones and inconsistent resistance levels, while requiring additional assistance for varying resistance techniques.
Innovation Solution
A programmable electronic resistance system using a DC motor with a control system that adjusts resistance via torque, allowing for customizable resistance profiles, including elastometric, reverse elastometric, and differential resistance exercises, with a low inertial mass and the ability to simulate weights from 1 pound to over 300 pounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If gravity weights are used to provide resistance, then resistance levels can be increased, but the system becomes bulkier and heavier
Solution Approach 1:
The patent replaces the mechanical gravity weight system with an electrical motor system. The motor generates resistance torque electrically rather than mechanically through weights, eliminating the need for bulky weight stacks while maintaining the ability to provide high resistance levels for strength training
Solution Approach 2:
The patent changes the resistance generation mechanism from gravitational force (weights) to electromagnetic force (motor torque). By controlling motor current and torque parameters electronically, the system can provide variable resistance levels without the physical bulk of corresponding weight stacks
2Force
If gravity weights are used to provide resistance, then resistance levels can be increased, but safety risks increase
Solution Approach 1:
The patent replaces heavy mechanical weights with a controlled motor system that generates resistance through electromagnetic torque. This eliminates the inherent safety risks of dropping or mishandling heavy weights while maintaining the ability to provide high resistance for strength training
Solution Approach 2:
The motor system provides active control and monitoring of resistance levels, automatically adjusting torque output based on user performance and safety parameters. The system monitors its own operation and user feedback to prevent unsafe conditions without requiring external supervision
3Weight of stationary object
If elastometric systems are used to provide resistance, then the system becomes lighter, but resistance zones are limited and resistance levels become inconsistent
Solution Approach 1:
The patent uses precise electronic control of motor torque parameters to maintain consistent resistance levels across the full range of motion. The control system adjusts current and voltage parameters in real-time to compensate for variations in user speed and position, ensuring reliable and repeatable resistance delivery
Solution Approach 2:
The system incorporates feedback mechanisms that monitor user performance, motor torque output, and position. This feedback is used to continuously adjust resistance levels and ensure consistency throughout the exercise range, eliminating the limitations of passive elastometric materials
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 a safe, efficient, and customizable resistance training experience with reduced inertial mass, allowing for precise control of resistance levels and profiles, enhancing user safety and training effectiveness without the need for bulky weight stacks.
Implementation Method 1
A resistance apparatus, system, and method includes a DC motor that provides resistance to movement of a cable during an exercise stroke
Data Source
AI summary
A resistance exercise system having, in certain embodiments, a DC power supply system, a DC motor connected to the DC power supply system, a drive section connected to a drive element, a resistance delivery element connected to the drive element, and an extractable exercise resistance delivery section, a predetermined variable resistance section intermediate the DC power supply system and DC motor, an electrical condition sensor, and a variable resistance section control in communication with the electrical condition sensor and the predetermined variable resistance section. In some embodiments, the resistance exercise system includes a computing facility providing the ability to configure the exercise system to provide predetermined static or variable exercise resistance during exercise, and for example, during a positive or negative exercise stroke. Some embodiments allow users to create and, if desired, display varying and complex resistance exercise routines with or without use of resistance weights.