Digital Strength Training Torque Control for Spotting Detection
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Solution Overview
Problem
Existing strength training methods struggle to efficiently and safely implement asymmetric protocols, such as eccentric loading, due to the limitations of traditional weight systems and the challenge of maintaining proper form and timing.
Innovation Solution
A digital strength trainer system that uses a motor controlled by a filter to dynamically adjust torque, allowing for the simulation of asymmetric resistance training protocols by varying the tension applied to the user in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional weight systems are used for asymmetric protocols, then equipment simplicity is maintained, but control precision and safety deteriorate
Solution Approach 1:
The patent replaces traditional mechanical weight systems with an electronically controlled motor system. The motor is controlled by a filter that processes user input signals to generate precise torque commands, enabling accurate control of resistance throughout the range of motion. This substitution allows for programmable asymmetric protocols with precise control over tension profiles, eliminating the limitations of fixed mechanical weight stacks.
Solution Approach 2:
The system dynamically changes the torque parameter throughout the range of motion based on filtered user input. The filter processes signals to determine the appropriate torque level at each position, enabling asymmetric loading patterns where the resistance differs between concentric and eccentric phases. This parameter change capability allows precise control over the tension applied to the user in real-time.
2Ease of operation
If traditional weight systems are used, then device complexity is low, but ease of operation and safety deteriorate due to difficulty in maintaining proper form and timing
Solution Approach 1:
The system incorporates feedback through the filter that continuously monitors user input signals and adjusts the motor torque accordingly. This closed-loop control ensures that the resistance matches the user's intended movement pattern, providing real-time guidance for proper form and timing. The filter processes user commands and translates them into appropriate torque levels, making it easier for users to perform asymmetric protocols correctly.
Solution Approach 2:
The motor system automatically adjusts the resistance based on user input without requiring manual intervention to change weights or settings. The filter continuously processes user commands and the motor self-regulates the torque output, eliminating the need for users to manually adjust equipment during exercise. This self-adjusting capability simplifies operation while maintaining precise control over the training protocol.
3Adaptability or versatility
If fixed weight systems are used, then manufacturing simplicity is maintained, but adaptability to different training protocols deteriorates
Solution Approach 1:
The system transitions from static fixed weights to dynamic motor-controlled resistance. The motor can continuously adjust torque throughout the range of motion based on filtered user input, enabling a variety of asymmetric protocols including eccentric loading, partial repetitions, and variable tempo training. This dynamic control capability allows the same equipment to support multiple training protocols that would require different physical weight configurations in traditional systems.
Solution Approach 2:
The motor-controlled system with filter processing serves multiple training functions that would otherwise require separate specialized equipment. By programmably controlling the torque profile through the filter, a single system can implement symmetric protocols, asymmetric protocols, eccentric loading, concentric loading, and various repetition schemes, making it a universal strength training platform.
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 efficient, effective, and safe strength training by allowing for precise control of resistance, improving muscle engagement and reducing the risk of injury, while also providing a more enjoyable workout experience.
Implementation Method 1
a motor controlled by a filter to dynamically adjust torque
Data Source
AI summary
A first determination that a range of motion of a user of an exercise machine is between pre-determined motion thresholds is made. While the range of motion of the user is between the pre-determined motion thresholds, a velocity of the cable being below a pre-determined velocity threshold is determined. In response to determining that the velocity of the cable being below the pre-determined velocity threshold while the range of motion of the user is between the pre-determined motion thresholds, a second determination that the user should be spotted is made, Torque of a motor is reduced based at least in part on the second determination that the user should be spotted.