Although there have been many advances in electromyography (EMG) signal processing and pattern recognition (PR) for the control of multi-functional upper-limb prostheses, some the outstanding problems need to be solve...
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ISBN:
(纸本)9781457702150
Although there have been many advances in electromyography (EMG) signal processing and pattern recognition (PR) for the control of multi-functional upper-limb prostheses, some the outstanding problems need to be solved before practical PR-based prostheses can be put into service. Some of these are the lack of training and deployment protocols and the provision of the tools required. Therefore, we present a preliminary procedure to personalize the prosthesis deployment. In the first step, we record the demographic information of each individual amputee person and their background. In the second step of the protocol, the EMG signals are acquired. PR algorithms and parameters will be chosen in the 3rd step of the protocol. In the 4th step, the best number of EMG sensors to achieve the maximal performance with a full set of gestures is identified. The final step involves finding the best set of movements that the amputee person can produce with an accuracy > 95% as well as identifying the movements with the worst performance, which would require further training. This proposed approach is validated with 2 transradial amputees.
To meet the requirements of improving design efficiency and decreasing technique mistakes in the enterprise whose productions are customized by users,a method is introduced to develop CAD/CAPP integrated *** functions...
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To meet the requirements of improving design efficiency and decreasing technique mistakes in the enterprise whose productions are customized by users,a method is introduced to develop CAD/CAPP integrated *** functions of the integrated CAD/CAPP system developed according to this method include 3D modeling automatically assembled,2D engineering drawing automatically drawn,process planning sheets automatically filled and parameters of key parts checked and *** method is based on adding special features to the 3D *** example CAD/CAPP integrated system of Metal Bellows Expansion Joints(MBEJ)is developed by using Visual Basic6.0 based on Solid Works *** system can design MBEJ part parameters per GB/T12777 *** parameters have been used to generate MBEJ 3D models,engineering drawings and processing planning sheets *** the functions have been integrated in Solid Works software *** drawing paper and processing planning sheets can be modified manually to satisfy special demand.
This paper analyzes the traction mechanism of the angle interlocking multilayer loom of carbon *** can enlarge the output force of the cylinder through the double-rocker stress amplification mechanism,which is applied...
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This paper analyzes the traction mechanism of the angle interlocking multilayer loom of carbon *** can enlarge the output force of the cylinder through the double-rocker stress amplification mechanism,which is applied to the upper roller,making the upper and lower roller compact,then pulling away the cloth by from the cloth woven mouth power *** paper deduced the mathematical calculation formula of the *** addition,the simulation analysis of dynamics and statics for the key component of the model has been carried *** the finite element analysis *** shows that the parts could work according to schedule which provides a powerful guarantee for the realization of the function of the entire organization.
The design and research of weft insertion mechanism of carbon fiber multi-layer loom which has the great significance for the development of modern 3D weaving *** to the special requirements of carbon fiber multi-laye...
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The design and research of weft insertion mechanism of carbon fiber multi-layer loom which has the great significance for the development of modern 3D weaving *** to the special requirements of carbon fiber multi-layer weaving fabric,a multilayer weft insertion system incidental finding device is designed,which can be satisfied with multi-layer weft insertion according to the change of shedding position and different *** order to meet the sword belt and lifting gear running smooth,kinematic and dynamic analysis and static simulation have been *** results show that institutions satisfy all work requirements,and have important guiding significance for material selection of components.
The problem of planning flight trajectories is studied for multiple unmanned combat aerial vehicles(UCAVs)performing a cooperated air-to-ground target attack(CA/GTA)*** constraints including individual and cooperative...
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The problem of planning flight trajectories is studied for multiple unmanned combat aerial vehicles(UCAVs)performing a cooperated air-to-ground target attack(CA/GTA)*** constraints including individual and cooperative constraints are modeled,and an objective function is ***,the cooperative trajectory planning problem is formulated as a cooperative trajectory optimal control problem(CTP-OCP).Moreover,in order to handle the temporal constraints,a notion of the virtual time based strategy is ***,a planning algorithm based on the differential flatness theory and B-spline curves is developed to solve the ***,the proposed approach is demonstrated using a typical CA/GTA mission scenario,and the simulation results show that the proposed approach is feasible and effective.
For non-removable components of the future ASTRID prototype, repair operations will be performed in a gas environment. If the faulty area is located under the sodium free level, the gas-tight system will have to conta...
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ISBN:
(纸本)9781479910458
For non-removable components of the future ASTRID prototype, repair operations will be performed in a gas environment. If the faulty area is located under the sodium free level, the gas-tight system will have to contain the inspection and repair tools and to protect them from the surrounding liquid sodium. Concerning repair tools, the unique laser tool has been selected for future SFRs: the repair scenario for in-sodium structures will first involve removing the sodium (after bulk draining), then machining and finally welding. Concerning conventional tools (brush or gas blower for sodium removal, milling machine for machining and TIG for welding for which its feasibility was demonstrated in the 1990s) are still considered as a back-up solution. The maintenance of future ASTRID nuclear reactor prototype (inspection, repair) will be performed during shut down periods with some robotic carriers which have to be introduced within the main vessel, in primary 200°C sodium coolant with argon gas coverture. Inspection campaigns will be 20 days long. These robots (or carriers) will allow bringing inspection and repairing tools up to concerned components and structures. The needed degrees of freedom associated to these operations will be assumed either directly by the carrier itself or by specifics lower end carrier device for accurate local positioning. Several carriers will be designed, well adapted to specific needs: type of maintenance operation and location of inspection and repair sites. Feedback experience was gained during Superphenix SFR operation with the MIR robot which allowed to successfully make the Non Destructive Examination of main vessel welding joints, the carrier being outside bulk sodium. Operating conditions for the ASTRID robots will be harder from those of the MIR robot: temperature ranging from 180°C to 200°C, radiation dose ranging from 105 to 106 Gy, but mainly direct immersion within liquid sodium coolant. At the design phase of these robots, three
The IEEE Safety, Security, and Rescue robotics community has created a roadmap for producing unmanned systems that could be adopted by the Public Safety sector within 10 years, given appropriate R&D investment esp...
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The IEEE Safety, Security, and Rescue robotics community has created a roadmap for producing unmanned systems that could be adopted by the Public Safety sector within 10 years, given appropriate R&D investment especially in human-robot interaction and perception. The five applications expected to be of highest value to the Public Safety community, highest value first, are: assisting with routine inspection of the critical infrastructure, “chronic emergencies” such as firefighting, hazardous material spills, port inspection, and damage estimation after a disaster. The technical feasibility of the applications were ranked, with the most attractive scenario, infrastructure inspection, rated as the second easiest scenario; this suggests the maturity of robotics technology is beginning to match stakeholder needs. Each of the five applications were discussed in terms of the six broad enabling technology areas specified in the current National robotics Initiative Roadmap (perception, human-robot interaction, mechanisms, modeling and simulation, control and planning, and testing and evaluation) and nine specific capabilities identified by the community as being essential to commercialization (communication, alerting, localization, fault tolerance, mapping, manpower needs, plug and play capabilities, multiple users, and multiple robots). The community believes that perception and human-robot interaction are the two biggest barriers to adoption, and require more research, given that their low technical maturity (3rd and 6th rank respectively). However, each of the specific capabilities needed for commercialization are being addressed by current research and could be achieved within 10 years with sustained funding.
A digital method of noise measurement of chargesensitive preamplifiers(CSP) used with detectors of ionizing radiation has been proposed, which benefits from the fast development of digital techniques. Compared with th...
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A digital method of noise measurement of chargesensitive preamplifiers(CSP) used with detectors of ionizing radiation has been proposed, which benefits from the fast development of digital techniques. Compared with the classical methods recommended by IEEE Std 301-1988, CEI/IEC 61151 and GB/T 4079-94, this digital method does not need the main amplifier and AC voltmeter. The filter and pulse shaping function of the main amplifier has been realized by a digital signal processing algorithm, which makes the digital method flexible and convenient. The design process of the digital filter and the measurement procedures have been given in detail, and the feasibility and validity of this method have been examined by a test set-up consisting of some resistors, switches, a pulse generator, a digital oscilloscope and an PC.
It has special meaning for drug design as well as basic research to study Antimicrobial peptides(AMPs)because they have been demonstrated to kill Gram negative and Gram positive bacteria,mycobacteria,enveloped viruses...
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It has special meaning for drug design as well as basic research to study Antimicrobial peptides(AMPs)because they have been demonstrated to kill Gram negative and Gram positive bacteria,mycobacteria,enveloped viruses,fungi and even transformed or cancerous *** view of this,it is highly desired to develop an effective computational method for accurately predicting the functional types of AMPs because it can provide us with more candidates and useful insights for drug *** functional recognition is in fact a multi-label classification *** this study,up to six kinds of physicochemical properties value are selected to code the AMP sequence as physical-chemical property matrix(PCM),and then auto and cross covariance transformation is performed to extract features from the PCM for AMP sequence expression;At last,a clever use of Fuzzy K nearest neighbor rule will help identify the multiple functions of a query *** a result,the overall classification accuracy about 65% has been achieved through the rigorous Jackknife test on a newly constructed benchmark AMP dataset.
Learning is the main aim of robotics. In this paper we present a new stochastic learning automaton called a Skinner automaton as a psychological model for formalizing the theory of operant conditioning. We identify an...
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Learning is the main aim of robotics. In this paper we present a new stochastic learning automaton called a Skinner automaton as a psychological model for formalizing the theory of operant conditioning. We identify animal operant learning with a thermodynamic process, and derive a so-called Skinner algorithm from Monte Carlo method and Metropolis algorithm and simulated annealing. The Skinner automaton is implemented on a two-wheeled robot with a flexible lumbar in a simulation experiment and it learns to keep balance successfully.
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