In order to exhibit the surgery instruments in intraoperative image, the tracking system must be introduced so that it may finally achieve the image guide surgery on minimally invasive spine surgery (MISS). To exhibit...
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ISBN:
(纸本)9781479927456
In order to exhibit the surgery instruments in intraoperative image, the tracking system must be introduced so that it may finally achieve the image guide surgery on minimally invasive spine surgery (MISS). To exhibit the tip of the instrument, the transform of the CARM(a device which generates X-ray images) and CT image, the transform of the world and CARM. The more transforms of different space happen, the more errors will be introduced into the system. This paper is focused on the surgery robot tracking problem, especially for the tracking of the position and posture of the surgery instruments. We introduce a method which could establish the robot model of the surgery and show the projection of the surgery instruments on intraoperative images which could help surgeon estimate the relative position of the surgery instrument and patient's spine.
The rolling bearing is the common component in machinery, especially the high-speed rolling bearing. The running state will influence the performance of the whole machine directly. In this paper, it will analyze the d...
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This article focuses on the dynamic index and performance of a radial symmetric six-legged *** first the structure of the robot is described in brief and its inverse kinematics is *** the dynamic model is formulated a...
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This article focuses on the dynamic index and performance of a radial symmetric six-legged *** first the structure of the robot is described in brief and its inverse kinematics is *** the dynamic model is formulated as based on the Lagrange equations.A novel index of total torque is proposed by considering the posture of the supporting *** new index can be used to optimize the leg's structure and operation for consuming minimum power and avoiding unstable postures of the robot.A characterization of the proposed six-legged robot is obtained by a parametric analysis of robot performance through simulation using the presented dynamic *** influences are outlined as well as the usefulness of the proposed performance index.
Karl Fischer moisture analysis method is regard as the best way to determine the water content of the substance, which is widely used in industry of petrochemical, food, cosmetic and so on. In order to improve the man...
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This paper put forward a systematic design method based on virtual prototyping technology to simulate lifting platform of jacking system in jack-up offshore platform. After the main parameters of lifting platform in j...
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作者:
Ding, XilunYu, YushuRobotics Institute
School of Mechanical Engineering and Automation Beijing University of Aeronautics and Astronautics Beijing 100191 China
The multi-propeller multifunction aerial robot with two manipulators has the potential to deal with arm-operating in the air. However, the interaction between the main-body and manipulator subsystems make the robot be...
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Path planning for space vehicles is still a challenging problem although considerable progress has been made over the past *** major difficulties are that most of existing methods only adapt to static environment inst...
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Path planning for space vehicles is still a challenging problem although considerable progress has been made over the past *** major difficulties are that most of existing methods only adapt to static environment instead of dynamic one,and also can not solve the inherent constraints arising from the robot body and the exterior *** address these difficulties,this research aims to provide a feasible trajectory based on quadratic programming(QP) for path planning in three-dimensional space where an autonomous vehicle is requested to pursue a target while avoiding static or dynamic ***,the objective function is derived from the pursuit task which is defined in terms of the relative distance to the target,as well as the angle between the velocity and the position in the relative velocity coordinates(RVCs).The optimization is in quadratic polynomial form according to QP ***,the avoidance task is modeled with linear constraints in *** other constraints,such as kinematics,dynamics,and sensor range,are ***,simulations with typical multiple obstacles are carried out,including in static and dynamic environments and one of *** results indicate that the optimal trajectories of the autonomous robot in three-dimensional space satisfy the required ***,the QP model proposed in this paper not only adapts to dynamic environment with uncertainty,but also can satisfy all kinds of constraints,and it provides an efficient approach to solve the problems of path planning in three-dimensional space.
To solve the stability and rapidity problem of visual tracking, the paper presents a method that the characteristic points in sequenced images assemblies for target is collected by the Gabor filter, and turned into ma...
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This paper undertakes the modular design and development of a minimally invasive surgical manipulator for MRI-guided transperineal prostate interventions. Severe constraints for the MRI-compatibility to hold the minim...
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ISBN:
(纸本)9781467356404
This paper undertakes the modular design and development of a minimally invasive surgical manipulator for MRI-guided transperineal prostate interventions. Severe constraints for the MRI-compatibility to hold the minimum artifact on the image quality and dimensions restraint of the bore scanner shadow the design procedure. Regarding the constructive design, the manipulator kinematics has been optimized and the effective analytical needle workspace is developed and followed by proposing the workflow for the manual needle insertion. A study of the finite element analysis is established and utilized to improve the mechanism weaknesses under some inevitable external forces to ensure the minimum structure deformation. The procedure for attaching a sterile plastic drape on the robot manipulator is discussed. The introduced robotic manipulator herein is aimed for the clinically prostate biopsy and brachytherapy applications.
This paper presents an innovative mechanical design of a reconfigurable miniature throwable robot. The robot keeps in spherical shape to buffer shock and to protect inner sub-systems in falling, and it transforms to a...
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