Based on the numerical analysis function of ANSYS,the motion of the standard aircraft driven by WDPSS-8(Wire-driven Parallel Suspension System with 8 Wires)in the laminar flow is simulated by the fluid-solid interacti...
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Based on the numerical analysis function of ANSYS,the motion of the standard aircraft driven by WDPSS-8(Wire-driven Parallel Suspension System with 8 Wires)in the laminar flow is simulated by the fluid-solid interaction ***,the deformations of the wires simulated by beam4element without wind pressure agree with those of the theoretical ***,by solving the solid field in ANSYS and analyzing the solution to forward kinematics of WDPSS-8,it is found that the wires sustain the wind pressure against wind and the aircraft tends to move along the *** the wires in simulation bend against *** is also demonstrated that by increasing the wire axial tension,the coupled fluid-solid interaction phenomena can be ***,we analyzed the wind field affected by *** the one hand,by observing the wind vector graphs and the pressure distributed in the wind field,WDPSS-8 is superior to the rigid support in reducing the aerodynamical *** the other hand,by analyzing the wind velocity and pressure on and under the wing,it is found that the simulation is fit to the flying state of the aircraft in the air.
The most frequent cause of defect in the mandible is tumor-related surgery. Larger defects cause severe morbidity due to disturbances in function and esthetics. A fibular free flap is one way of filling a bony hole in...
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The most frequent cause of defect in the mandible is tumor-related surgery. Larger defects cause severe morbidity due to disturbances in function and esthetics. A fibular free flap is one way of filling a bony hole in either the upper or lower jaw. In this study, a new method combining preoperative planning and rapid prototyping for mandible fibula free flap reconstruction after preoperative planning was made based on Mimics software simulating surgery on a workstation. The preparatory work of surgery is divided into two parts: software simulation and model building. During software simulation the authors were able to choose the best site for the osteotomy regarding circulation and the model building can increase the precision and speed of treatment. A description of our surgical approach is presented and is supplemented by an illustrative case.
The paper discusses the torque characteristics of spherical permanent magnetic(PM)motor adopting three-dimensional(3D)magnetic equivalent circuit(MEC).Taking into account the unsaturation of the magnetic field,the rot...
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The paper discusses the torque characteristics of spherical permanent magnetic(PM)motor adopting three-dimensional(3D)magnetic equivalent circuit(MEC).Taking into account the unsaturation of the magnetic field,the rotor and the stator are meshed in spherical coordinates and cylindrical coordinates respectively,and then the expressions of the reluctances and magnetomotive force(MMF)have been *** to the relative position between the coordinate systems,the magnetic field in the air gap has been obtained by transforming the coordinate *** on this,the Maxwell stress tensor(MST)method is applied to analyze the electromagnetic force and torque,the corresponding torque matrix is given,and the relationship between the motor torque and winding location is *** with the finiteelement method(FEM),this method is proved to have a high accuracy and helpful to the optimization design of the PM spherical motor.
The rate of major accidents at sea tended to *** utilization of dynamic information for massive ships in the maritime search and rescue shows more and more *** paper imports GIS to emergency data management and discus...
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The rate of major accidents at sea tended to *** utilization of dynamic information for massive ships in the maritime search and rescue shows more and more *** paper imports GIS to emergency data management and discusses many GIS technologies that can be used for maritime search and *** report our experience on the development of a prototype system based on three-dimension *** show that our methodology is applicable and efficient.
3D reconstruction for freehand 3D ultrasound is a challenging issue because the recorded B-scans are not only sparse, but also non-parallel. Both conventional volume and surface reconstruction methods can39;t recons...
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3D reconstruction for freehand 3D ultrasound is a challenging issue because the recorded B-scans are not only sparse, but also non-parallel. Both conventional volume and surface reconstruction methods can't reconstruct sparse data efficiently while they are arbitrarily oriented in 3D space. We developed a new surface reconstruction method for freehand 3D ultrasound based on variational implicit function. In the new method, we first constructed on- & off-surface constraints from the segmented contours of all recorded Bscans, then used a variational interpolation technique to get a single implicit function in 3D. Finally, the implicit function was evaluated to extract the zerovalued surface as reconstruction result. One phantom experiment was conducted to assess our variational surface reconstruction method, and the experiment results have shown that the new method is capable of reconstructing surface smoothly from sparse contours which can be arbitrarily oriented in 3D space.
The main goal of this work is to propose a haptics guideline in human-robot systems focused on the relationship between the human and robot task, the use of a physical interface and the object to manipulate. With this...
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ISBN:
(纸本)9781424475605;9781424475629
The main goal of this work is to propose a haptics guideline in human-robot systems focused on the relationship between the human and robot task, the use of a physical interface and the object to manipulate. With this aim, this guideline presents two main parts: a set of heuristic indicators and a qualitative evaluation. In order to assess its ergonomic validation, an application over a well known haptics interface is presented. The final goal of this work is the study of possible applications in regular laboratory conditions in order to improve the design and use of human-robot haptic interfaces in telerobotics applications.
Complex assembly tasks of specific products in industry are mostly realized in a traditional *** one hand specialized and dedicated machines are used to solve major parts of assembly *** the other hand where machines ...
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Complex assembly tasks of specific products in industry are mostly realized in a traditional *** one hand specialized and dedicated machines are used to solve major parts of assembly *** the other hand where machines cannot be implemented human labor is utilized at the factory *** setup of such assembly systems is often oriented toward one product and a predefined work *** tedious human work is one of the essential benefits of the presented work *** high level flexibility and adaptivity to an assembly process can be proven as a major investment in *** products from electronic industry can be assembled on the developed framework which boosts *** presented approach has been tested and evaluated on an industrial setup supported by a multiagent control architecture consisting of three 6 DOF robots.
Bionic learning control is proposed and developed for biologically inspired underwater robots, namely robotic fish. This study focuses on learning natural fish’s adaptability to complex and dynamic environment to som...
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Bionic learning control is proposed and developed for biologically inspired underwater robots, namely robotic fish. This study focuses on learning natural fish’s adaptability to complex and dynamic environment to some extent, rather than mimicking streamlined shapes or specific actuators to develop more mechanical prototypes. After explanations on its inherence and principles in the viewpoint of bionics, a case study on robotic undulating fins is suggested and explored to exhibit this proposed control, from biological inspirations to practical control algorithms. In detail, an iterative learning scheme based control is studied combined with a filter to reduce the measurement noise and a curve fitting component, to keep the necessary phase difference between neighboring fin raysis proposed. Moreover, the iterative learning based control algorithm is designed and implemented for practical applications. The experimental results validate that the proposed learning motion control can effectively improve the propulsion of RoboGnilos. For instance, the steady propulsion velocity may be enhanced by over 40% with some specified parameters.
This paper presents a novel closed-loop method for a multilink robotic fish to mimic the C-start maneuver, in which the turning speed and precision are emphasized. The turning speed is maximized by carefully designed ...
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This paper presents a novel closed-loop method for a multilink robotic fish to mimic the C-start maneuver, in which the turning speed and precision are emphasized. The turning speed is maximized by carefully designed preparatory stage, and the turning precision is achieved by the feedback of the turning angle from a gyroscope and a new design of the propulsive stage. Different types of C-starts are studied based on the different sizes of caudal fins, in order to achieve the highest turning angular velocity. All the proposed types of C-starts are experimented and compared using a 4-joint robotic fish. The experimental results show the fastest angular velocity up to 200°/s and the distinctions between all these different types.
The proceedings contain 49 papers. The special focus in this conference is on Mechatronic Systems and Materials. The topics include: Multi-fingered haptic interface robot and its application systems;rotor crack detect...
ISBN:
(纸本)9783908451600
The proceedings contain 49 papers. The special focus in this conference is on Mechatronic Systems and Materials. The topics include: Multi-fingered haptic interface robot and its application systems;rotor crack detection using active magnetic bearings;analysis of robustness of vibration control system for a magnetically supported shaft;uncertainty modeling in robust control of active magnetic suspension;fluoride release from composite materials for dental fillings;the influence of selected powder fillers on the tribological properties of composite materials for dental fillings;analytic description of impulse response signals;the method of complex worthiness assessment of an engineering object in the process of its use and service;modeling of beam as control plane for a vibration control system;control of slewing motion of a crane model taking into account non-linearities in drive system;control of operational motions of a mobile crane under a threat of loss of stability;weak interactions between objects used as new diagnostic signals in the detection of pipeline leakages;test stand for analysis of fatigue crack propagation under bending with torsion;analysis of timings in networks that use TCP/IP or UDP/IP protocols for communication with industrial controllers in mechatronic systems;constitutive models of vascular tissue;application of modern e-learning techniques in the vocational training in automation and robotics;wavelet analysis of barkhausen noise in reconstructing distributions of residual stress;diagnostics of scoring in gears and modeling of magnetoelastic materials for force and torque sensors.
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