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Virtual surgery system aims to simulate the real surgery for doctor-training, while the soft tissue deformation is the one of the most significant part. To solve the lacks of object volume feature due to the problem that surface model defects in internal volume force together with the stability and real-time of the mass spring model, this paper proposes a mass spring model based on the internal point...
This study proposes a new method for modeling the complicated dynamics between motor neural signal (surface electromyography, sEMG) and corresponding joint torque of muscle contraction (sEMG-driven neuromusculoskeletal model), which has potential to be used for rehabilitation robot control and neuromuscular evaluation after stroke, etc. In this model, muscle activation dynamics and contraction dynamics...
The population of disabled stroke survivors is increasing sharply over the world, and robot-assisted training has been proved to be effective to help motor relearning and alleviate the shortage of physical therapists. This paper presents the design details of a novel upper limb rehabilitation robot named CASIA-ARM, which can assist poststroke patients to perform shoulder and elbow rehabilitation training...
This paper aims at dynamic modeling and control of a new upper-limb rehabilitation robot which has a parallel structure. Dynamic modeling of parallel robot is a complicated problem, and the dynamics and voluntary force of the patient arm increase the difficulty of dynamic analysis and control in rehabilitation training. The novelties of this study are: (1) dynamics of the robot and the patient are...
In this paper, an sEMG-driven musculoskeletal model of human shoulder and elbow joints is built based on time delay neural network (TDNN). Six principal muscles of the upper arm and forearm are included, and the experiment was conducted under isometric contractions with the aid of a planar haptic interface. Both force amplitude and direction were regulated continuously, and the experiment results...
In order to investigate the feasibility of integrating functional electrical stimulation (FES) with robot-based rehabilitation training, this paper proposes an FES-assisted training strategy combined with impedance control for our self-made exoskeleton lower limb rehabilitation robot. This control strategy is carried out in a leg press task. Through impedance control, an active compliance of the robot...
The self-anchored suspension and cable-stayed combination system bridge is a new type of bridge which is aesthetic in appearance and skillful for the design. In order to analyze the mechanical behavior of the bridge on the process of system transformation, the model of spatial member finite elements was established. In addition the model test with the similarity ratio of 1:20 was carried out. Through...
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