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The rehabilitation exoskeleton robot is more and more used in the assisting stroke patients in implementing rehabilitation training. In this paper, a novel exoskeleton hand robot which was driven by cable has been proposed to aim at helping varieties of paralyses patients recover motor function. This exoskeleton hand rehabilitation robot system mainly consists of exoskeleton hand robot, EEG system,...
The exoskeleton robotic rehabilitation training system is a branch of the field of robotics, it is the external mechanical system that is consistent with the similar joints of the human body, and attached to the human body. With the development of exoskeleton rehabilitation robotic system, the biomechanics influence of device should be considered in rehabilitation training. This paper proposes a novel...
This paper proposed a novel muscle force evaluation method to evaluate the patient's rehabilitation condition in the process of rehabilitation training. According to the related literature research, the complexity of the electromyography (EMG) signals were different under different muscle force. The physiological features and the state of muscle can be indirectly speculated by detecting the change...
A flexible method is presented to generate an arbitrary length optical needle with high purely longitudinal polarization and consistent beam size (∼0.36λ) over flattop range. By reversing the field radiated from a uniform line source, for which the electric current is constant along its extent, situated at the focus of the 4Pi focusing system formed by two confocal high-NA objective lenses, the required...
As we all know, rigid structure is the universal form of robots. They can be controlled accurately, but are not suitable enough for applying in rehabilitation, especially for hands. Human's hands have some complicated patterns of movement and narrow joint range of motion, so rigid accessory equipment may cause secondary injury. For the purpose of avoiding this potential risk, the idea of applying...
Human welder's experiences and skills are critical for producing quality welds in manual gas tungsten arc welding (GTAW) process. In this paper, a neuro-fuzzy-based human intelligence model is constructed and implemented as an intelligent controller in automated GTAW process to maintain a consistent desired full penetration. An innovative vision system is utilized to real-time measure the specular...
Modeling of skilled human welder's response to 3D weld pool surface can help develop next generation intelligent robotic welding systems and train welders faster. In this paper, neuro-fuzzy based data driven modeling of human welder intelligence is conducted. An innovative vision system is utilized to real-time measure the specular 3D weld pool surface under strong arc interference. Experiments are...
The weld pool contains abundant information about the welding process and can thus be utilized to accurately monitor the weld penetration. This paper addresses the dynamic estimation of the weld penetration in GTAW process. A machine vision based weld pool sensing system is utilized and the 3D weld pool surface is reconstructed in real-time. Various dynamic experiments under different welding conditions...
Measuring weld pool surfaces in real-time is the foundation for intelligent welding that emulates welders' sensory capability. To image and measure the mirror-like weld pool surface under the strong arc radiation, a structured light laser pattern, i.e., a dot matrix, is projected onto the weld pool surface and its specular reflection is intercepted and imaged by an imaging plane placed with a distance...
This study aims at real-time measurement /reconstruction of the specular three-dimensional (3D) weld pool surface under strong arc in gas tungsten arc welding (GTAW). A vision-based sensing system is used to project a dot-matrix laser pattern on the weld pool surface which is able to specularly reflect the laser pattern. This reflection pattern, deformed by the weld pool surface has been utilized...
Human welder's experiences and skills are critical for producing quality welds in Gas Tungsten Arc Welding (GTAW) process. Modeling of the human welder's response to 3D weld pool surface can help develop next generation intelligent welding machines and train welders faster. In this paper, a neuro-fuzzy based human intelligence model is constructed and implemented as an intelligent controller in automated...
A skilled welder determines the weld joint penetration from his/her observation on the weld pool surface during the welding process. This paper addresses the estimation of weld joint penetration (i.e. determining back-side bead width that measures the degree of the weld joint penetration in full penetration welding) using the parameterized 3D weld pool surface in gas tungsten arc welding (GTAW). To...
Understanding and modeling of welder response to 3D weld pool surface help develop intelligent welding robotic systems and better train welders. In this paper, a welder's adjustment on the welding current as a response to the 3D weld pool surface as characterized by its width, length, and convexity is studied. A vision sensing system is developed to real-time measure the specular 3D weld pool in gas...
Bulk metallic glasses have exhibited superior microforming ability, and can be used to make high strength microparts. The micro-forming process of Zr-based amorphous alloy in micro silicon molds with the modulus 0.1mm, 20 teeth and 300µm in depth is simulated using the DEFORM 3D, a finite element simulation software. The filling process and the impact of billet size on forming load are analyzed. The...
Realtime Ahead Detection Technology used in mechanized excavation of coal mine roadway adopts Dual Frequency Induced Polarization Method to predict the geologic anomalies hidden before the excavating face. In the paper, considering the characteristics of mechanized excavation of coal mine roadway, the author puts forward the features of ideal ahead detection method which could be used in geologic...
For pumps with auxiliary impeller dynamic seals can meet the requirements of high efficiency, long life and high reliability, they are used more and more by industries to meet environmental protection and energy saving. However, the researches have yet been carried out little on the internal flow mechanism of the auxiliary impeller dynamic seals and their design optimization based on energy saving...
Due to the vast amount of energy consumption of AC (Air Conditioning) systems, the reasonable design, optimal operation and efficient management of AC systems are inevitable and necessary to the whole city energy management (CEM). To achieve these objectives, the verification of systematic characteristics, practical approaches of energy consumption and systematic fault diagnosis of AC systems should...
The application of CFD (Computational Fluid Mechanics) simulation is more and more extensive in the research field of urban air environment. CFD has its advantages on simulating the complicated air flow phenomenon and presenting intuitional descriptions. Planting work within a city has great ecological effect on city or district air environment, CFD simulation of planting effect on district air environment...
The application of CFD is more and more extensive in the research field of district environment. The way of intuitional expression is also tend to more and more recognized by citizens and city decision makers. CFD simulation and its superiority for district planning and design, its application for residential district atmospheric thermal environmental evaluation and improvement in district planning...
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