Research Of Haptic Feedback And Control System For The Intelligent Artificial Hand

Prostheses can make up and modify the shape for the lack of limbs.Some prostheses with cable control function have the ability to grasp.However,most of the prostheses do not have haptic feedback ability.The lack of haptic feedback makes prostheses operate inconveniently.This article introduces the vibrotactile method to feedback of the prosthetic hand and uses s EMG signals to control prosthetic hand to improve the performance of prosthetic hands and the live-quality of handicapped people.This paper research includes:1.System design: According to the goals of the intelligent prosthetic hand control system,the overall system design and key hardware selection were carried out.The s EMG control scheme,the vibration tactile feedback scheme and the under-driven prosthetic hand scheme were determined.2.EMG signal recognition: Used the MYO armband to collect the skin surface EMG signal,recognized the gesture intention of the EMG signal with the neural network model and determined the key parameters of the model.Experiments show that the average response time of the model is204 ms,and the recognition accuracy rate is 92.7%.3.Tactile feedback methods research.The contents include: analysis of skin tactile perception mechanism,determination of tactile mapping scheme,experimental determination of vibration stimulation parameters,analysis of tactile signals and research on tactile mapping relationships.4.Device development and experiments.Develop core components such as multi-channel vibration drive module and power supply module,design computer software.Experimental results show that this work improves the controllability of the prosthetic hand.Vibro-tactile technology is introduced into the myoelectric smart prosthetic hand,which improves the practicability of the prosthetic hand,and is of great significance to the improvement of the quality of life of the disabled.