Virtual Environment Design And Experimental Research For Robot-assisted Motor Function Rehabilitation

Latest research of the exercise rehabilitation medicine shows that patients’ actively participation in sports rehabilitation training improves the effect of rehabilitation training. In the field of rehabilitation medicine, it can provide patients with real-time visual, auditory and force feedback perception so as to produce good telepresence applying virtual reality technology combined with rehabilitation robot.Based on the above research background, the target of this research project is to design a robot-assisted motor function virtual rehabilitation training system and conduct according experimental research. Specific work is as follows:In the first place, this paper studies the reason why stroke can cause paralysis and the theoretical basis of post-stroke hemiplegia rehabilitation. This establishes the basis of the whole scheme of robot-assisted motor function rehabilitation virtual reality training system.Secondly, this paper provides patients in different rehabilitation stages with corresponding difficulty level and high immersive virtual training task, which could assist the human elbow extension/flexion, wrist extension/flexion and knuckle flexion movement coordination.Then, based on the temporal-spatial correlation principle, a new optimization algorithm is used in the pretreatment process to accelerate the speed of updating the bounding box. Besides, efficiency of the collision detection is improved significantly.In the last part, this paper puts up a virtual rehabilitation training system as a simulation experiment platform and carries out a experimental study on two stroke patients with acute and chronic phase. Analysis of motion parameters of patients before and after treatment is made to assess the therapeutic effectiveness of virtual rehabilitation training system. The experimental result shows that the rehabilitation training system can fully arouse the enthusiasm of participation in treatment, help patients with upper limb movement coordination and preliminary rehabilitation effect of extensor muscle of wrist and fingers is obtained.