Integrated Flywheel Braking With Stepper-Motor Resistance Control
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Solution Overview
Problem
Modern fitness equipment often requires cumbersome and time-consuming adjustments for resistance settings, which can be inconvenient and disruptive during exercise, and separate auxiliary brakes complicate the user experience.
Innovation Solution
A braking system with an electronic resistance assembly and an auxiliary brake integrated into a single adjustment knob, using magnets and a stepper motor to adjust resistance smoothly and accurately, and a load cell to measure torque for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate friction-based auxiliary brake is used to stop the flywheel, then safety is improved, but device complexity increases and user convenience deteriorates
Solution Approach 1:
The patent combines the auxiliary brake function with the resistance adjustment mechanism into a single integrated system. The brake pad is positioned to contact the flywheel periphery and is actuated by the same adjustment knob that controls resistance, merging two previously separate functions (resistance control and braking) into one unified mechanism, thereby reducing device complexity while maintaining safety
Solution Approach 2:
The adjustment knob is designed to perform multiple functions: it controls the resistance level during exercise and simultaneously activates the auxiliary brake when pressed. This multi-functional design eliminates the need for separate controls, improving user convenience while maintaining the safety function of the auxiliary brake
2Measurement precision
If torque adjustment is made difficult and time-consuming, then resistance control precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent replaces manual torque adjustment mechanisms with an electronic resistance control system. A sensor detects the position of the adjustment knob and sends signals to an electronic controller, which automatically adjusts the resistance level. This substitution of mechanical adjustment with electronic control provides both precision and ease of operation, as the system handles the complex adjustments automatically based on simple user input
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
Provides easy, accurate resistance adjustment and enhanced safety by integrating resistance and braking functions, reducing bike-to-bike variability and improving user convenience and exercise metrics accuracy.
Implementation Method 1
A braking system includes a plurality of magnets providing varying exercise resistance when moved in relation to a flywheel of the exercise apparatus
Implementation Method 2
A braking system includes both an easy to use and accurate resistance adjustment assembly for adjusting resistance during exercise and an auxiliary brake for bringing the flywheel to a full stop through the same adjustment knob
Data Source
AI summary
Systems and methods for adjusting resistance on an exercise device. An actuator configured to selectively position the resistance apparatus relative to a flywheel. Control components configured to control operation of the resistance system in response to instructions, and a processor configured to output media for an exercise class to a user, the exercise class comprising one or more target resistance ranges corresponding to a segment of the exercise class. The processor further configured to selectively implement auto-follow logic configured to determine a target resistance value for a current segment of the exercise class and instruct the control components to adjust the resistance system to the target resistance value.