Limbs Cooperation Exerciser Speed Synchronization Control
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Solution Overview
Problem
Conventional limbs exercisers require continuous and coordinated effort from upper and lower limbs for muscle endurance training or rehabilitation, leading to frustration and abandonment due to uneven strength and coordination issues.
Innovation Solution
A limbs cooperation exerciser with an upper limb exercise mechanism, a lower limb exercise mechanism, driving modules, rotating speed sensors, and a control module that adjusts the differential rotating speeds to ensure synchronized motion, assisting weaker limbs and improving coordination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user performs periodic revolving motions on a conventional limbs exerciser, then muscle endurance training or rehabilitation is achieved, but the training becomes tedious and the user may abandon it due to the requirement for continuous long-time effort
Solution Approach 1:
The exerciser employs periodic reciprocating motions for both upper and lower limbs, creating a rhythmic exercise pattern that is easier to sustain over time. The synchronized periodic movement reduces the perceived monotony compared to continuous unidirectional exercise
Solution Approach 2:
The device combines upper limb exercise mechanism with lower limb exercise mechanism into a single integrated system. By merging both limb exercises into one coordinated activity, the overall training duration feels more manageable and less tedious than separate exercise routines
2Ease of operation
If the user's upper or lower limbs are not strong enough to turn the handles or pedals smoothly, then the user can perform the exercise, but the user feels frustrated or discomfort, reducing willingness to operate the exerciser
Solution Approach 1:
The driving modules provide auxiliary power that acts as a counterbalance to the user's insufficient limb strength. This assistance reduces the effective load on weak limbs, enabling smooth operation without frustration while maintaining exercise effectiveness
Solution Approach 2:
The driving modules serve as intermediary devices between the user's limbs and the exercise mechanism. They mediate the power transmission, amplifying the user's input and smoothing out variations in limb strength to ensure consistent, frustration-free operation
3Productivity
If the upper limbs are stronger than the lower limbs, or conversely, the lower limbs are stronger than the upper limbs and thus move faster, then the limbs exercise independently, but the limbs become incoordinate
Solution Approach 1:
Rotating speed sensors continuously monitor the speed of upper and lower limb movements and provide feedback to the control module. This feedback loop enables real-time detection of speed discrepancies and automatic adjustment to maintain coordination
Solution Approach 2:
The driving modules dynamically adjust their output power based on real-time speed measurements. When one limb moves faster than the other, the system dynamically modifies the assistance provided to each limb to equalize their speeds and maintain coordinated motion
Data Source
AI summary
A limbs cooperation exerciser and a control method for the same are provided. The limbs cooperation exerciser includes a frame, an upper limb exercise mechanism, a first driving module, a lower limb exercise mechanism, a second driving module, a first rotating speed sensor, a second rotating speed sensor, and a control module. The control module controls at least one of the first driving module and the second driving module according to the first rotating speed and the second rotating speed, making a differential value between the detected first rotating speed and the second rotating speed be smaller than or equal to a predetermined differential value. That is, the limbs cooperation exerciser controls the rotation of the first operating member or the second operating member to lower the difference between the rotating speeds of the first operating member and the second operating member.