基于时频空域联合编码的智能假肢多模态触觉反馈研究

The disabled patients have a very urgent demand for a new generation of intelligent prostheses. Bi-directional bio-machine interaction with sensory feedback is one of the core features of intelligent prostheses. This project is based on the reconstruction of sensory function and vitality of natural interaction as the goal, a multimodal tactile feedback system and time-frequency-space domain joint encoding method of force/position information of intelligent prostheses are researched, experiments for the disabled patients are implemented for reconstruction of haptic and proprioceptive feedback. The main research contents include: electrode array optimization design of multi-channel electrical stimulation to reduce the coupling effect between electrodes and the interference with EMG as the goal, Design of electrical stimulator with vector impedance adaptation, With electrode array optimization, multi-phase electrical stimulation collaboration based noise reduction and adaptive filtering combined method to reduce the interactive information interference, time-frequency-space domain encoding feedback method from multi-mode sensing information to the multi-modal stimulus information. The research results of this project will provide theoretical and technical support for the development and application of sensory reconstruction and vitality interactive technology of intelligent prosthetic limb.

肢残患者对新一代智能假肢具有非常迫切的需求，具有感知反馈功能的双向生机交互是智能假肢的核心特征之一。本项目以感觉功能重建和生机自然交互为目标，研究智能假肢的多模态触觉反馈系统及力/位传感信息的时-频-空多域联合编码反馈方法，进行肢残患者生机交互实验，重建患者的力觉和本体感反馈。研究内容主要包括：以减小多通道电刺激效应耦合及对肌电信号干扰为目标的电刺激电极阵列优化设计，具有矢量阻抗自适应性的电刺激器设计，以电极阵列优化、多相电刺激协同降噪和自适应滤波联合抑制生机交互信息干扰的方法，从多模态传感信息到多模态刺激信息的时-频-空域联合编码反馈方法。本项目的研究成果将为智能假肢感知功能重建和生机交互技术的发展与应用提供理论和技术支持。

肢残患者对智能假肢具有非常迫切的需求，具有感知反馈功能的双向生机交互是智能假肢的核心特征之一。本项目以感觉功能重建和生机自然交互为目标，研究智能假肢的多模态触觉反馈系统及力/位传感信息的时-频-空多域联合编码反馈方法，并进行生机交互实验。本项目研制了具有矢量阻抗自适应性的电刺激器和阵列式电触觉反馈系统，提出了以电极阵列优化、多相电刺激协同降噪和自适应滤波联合抑制生机交互信息干扰的方法，提出了从多模态传感信息到多模态刺激信息的时-频-空域联合编码反馈方法。本项目的研究成果为智能假肢感知功能重建和生机交互的发展与应用提供了理论和技术支持。