500 Section - Design and Research of a Multi-modal Six-Axis Motion Balance Training Rehabilitation Simulator Based on Medical-Engineering Interdisciplinary

Objectives : Patients with neurodegenerative diseases frequently present with motor control dysfunction, whose core pathological mechanism is attributed to diminished neuroplasticity within the proprioceptive-motor feedback loop. Guided by the theory of "dynamic environment-facilitated neuroplasticity", this study integrates mechanical engineering and rehabilitation engineering technologies to develop a gamified interactive multi-degree-of-freedom six-axis motion balance training rehabilitation simulator. It aims to achieve precision and intelligence in balance function training via medical-engineering collaborative design.

Design: A cross-disciplinary framework of "medical demand-driven and engineering-empowered design" was adopted. From a medical standpoint, based on the neural mechanisms underlying balance dysfunction (elevated proprioceptive thresholds and delayed dynamic balance responses), the training requirements were identified as: ①multi-dimensional dynamic motion stimulation (roll/pitch ±25°, tilt angle ±20°); ②real-time motion feedback ; ③immersive scenario design (to enhance training compliance). From an engineering perspective, a high-carbon steel structure was employed to ensure equipment robustness , six-axis coordinated control system to enable multi-degree-of-freedom motion (adjustable lateral/longitudinal displacement of 150mm, maximum load of 160kg). Game actions (e.g., racing steering, roller coaster diving) were translated into motion parameters of the six-axis platform in real-time via control algorithms, forming a "visual-proprioceptive-motor" multimodal feedback loop.

Results: Clinical trials demonstrated that the six-axis simulator, through the coupling of multi-dimensional dynamic feedback and gamified scenarios, significantly reduced center-of-gravity displacement in static balance tests and enhanced dynamic balance response speed, validating its efficacy in promoting neural feedback loop reconstruction.

Conclusion: This study realizes the upgrade of balance training equipment up to active interaction through in-depth integration of rehabilitation medicine neuroplasticity theory and six-axis motion control technology. The synergistic design of gamified scenarios and multi-degree-of-freedom motion not only ensures the scientific rigor of medical training but also enhances the practicality of engineering technology. This achievement is expected to advance balance dysfunction rehabilitation training toward precision and interactivity.