Balance Training System Predictive Control
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Solution Overview
Problem
Balance training systems for individuals with balance function disorders face challenges in maintaining motivation and safety due to unpredictable movements of the carriage, which can lead to sudden variations in the training environment, making it difficult to perform rehabilitation effectively and safely.
Innovation Solution
A balance training system that includes a moving carriage with a detection unit to monitor the load's center of gravity, a calculation unit to determine a stable range, and a control unit to perform safety control by adjusting the carriage's movement speed and providing notifications to prevent sudden movements, ensuring the user remains within a safe balance range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the moving carriage is controlled according to the displacement of the load's center of gravity, then the training person is motivated to take part in the training attempt, but there may be a sudden variation in the movement of the moving carriage that the training person does not expect
Solution Approach 1:
The system changes the control parameter from direct center of gravity displacement control to a combination of center of gravity monitoring and predicted position-based control. This allows the carriage to respond to training actions while maintaining predictable movement within a safe range, resolving the contradiction between motivation and safety
Solution Approach 2:
The system continuously monitors the load's center of gravity position and compares it with the predicted position to detect deviations. This feedback mechanism enables the system to maintain predictable movement patterns while still responding to training actions, ensuring both motivation and reliability
2Ease of operation
If the moving carriage moves in association with the game, then the training person is motivated to take part in the training attempt, but it may be difficult for the training person to maintain a state in which the training person is standing on a boarding surface
Solution Approach 1:
The system calculates the predicted load's center of gravity position in advance based on current position and movement direction. This preliminary calculation allows the system to anticipate training actions and adjust carriage movement to maintain stability while preserving training engagement
Solution Approach 2:
The system changes from direct movement control to a control method that considers both current center of gravity position and predicted position. This parameter change allows the carriage to move in association with the game while maintaining standing stability through predictive adjustments
Data Source
AI summary
A balance training system includes a moving carriage configured to be able to move on a moving surface by driving a driving unit, a calculation unit calculating a load's center of gravity of the training person's feet on a boarding surface from the detected load, a setting unit configured to set a stable range, the stable range being a range of the load's center of gravity, and the training person is assumed to maintain upright on the boarding surface in the range; and a control unit performing safety control for ensuring safety during a training attempt for driving the driving unit to move the moving carriage when the control unit determines that the load's center of gravity has fallen outside the stable range or when the control unit predicts that the load's center of gravity is going to fall outside the stable range.