作者：
Stewart, C.V.Department of Computer Science
New York State Center for Advanced Technology in Automation and Robotics Rensselaer Polytechnic Institute TroyNY12180-3590 United States
Probability density functions (PDFs) are derived for many of the geometric measurements upon which stereo matching techniques are based, including orientation differences between matching line segments or curves, the ...
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作者：
Derby, StephenMechatronics and Assembly Lab
New York State Center for Advanced Technology in Automation Robotics and Manufacturing Rensselaer Polytechnic Institute TroyNY12180 United States
This paper discusses a computer graphics program that helps to design a robot based on an existing workcell that would be difficult or costly to modify. Standard robot bases, as well as tracked robots, are located to ...
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作者：
Derby, StephenDirector
Mechatronics and Assembly Lab New York State Center for Advanced Technology in Automation Robotics and Manufacturing Rensselaer Polytechnic Institute TroyNY12180 United States
This paper details a set of methodologies to design a robot based on an existing workcell that would be difficult or costly to modify. Standard robot bases, as well as tracked robots, are located to minimize the error...
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Nonholonomic vehicles are shown to be kinematically equivalent to unicycles. A dynamic model for mobile vehicles moving on planar surfaces under nonholonomic constraints is derived. The model is decomposed into a kine...
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Nonholonomic vehicles are shown to be kinematically equivalent to unicycles. A dynamic model for mobile vehicles moving on planar surfaces under nonholonomic constraints is derived. The model is decomposed into a kinematic and a dynamic subsystem. The kinematic subsystem is shown to be globally stabilizable by using continuous control laws on reference trajectories that are nonstationary and continuously differentiable with respect to time. The continuity of the kinematic control inputs allows the extension of the vehicle control at the dynamic level. Stability of the overall closed loop system is examined using singular perturbation theory. Simulations verify all theoretical derivations.
An anthropomorphic five-fingered hand, the Anthrobot-2, is described. It features anatomical consistency with a human hand, giving it special advantages during teleoperation. Each finger has four joints as in the huma...
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An anthropomorphic five-fingered hand, the Anthrobot-2, is described. It features anatomical consistency with a human hand, giving it special advantages during teleoperation. Each finger has four joints as in the human hand: two at the knuckle, one between the proximal and middle finger segments, and one between the middle and distal finger segments. The thumb has four degrees of freedom, allowing it to emulate human thumb motion. The controlling hardware and the kinematic analysis, including forward and inverse kinematics, are presented. Future research is discussed.< >
The problem of planning motions offline for a robot in the presence of obstacles via an algorithm that does not proceed by a discretization of the search space involves defining good heuristics to characterize the pro...
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The problem of planning motions offline for a robot in the presence of obstacles via an algorithm that does not proceed by a discretization of the search space involves defining good heuristics to characterize the proximal relationships between two rigid bodies and the development of algorithms for their computation. Several measures are presented, and schemes for their computation are developed. The performances of the algorithms are determined in terms of their running time. The advantage of the fuzzy model is that it lends itself easily to numerical computation involving manipulation of the coordinates of the extreme points.< >
Presents a novel approach to automated visual inspection based on comparing volumetric models of a reference object to a model of an actual object iteratively created from sensor data. The use of volumetric models giv...
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Presents a novel approach to automated visual inspection based on comparing volumetric models of a reference object to a model of an actual object iteratively created from sensor data. The use of volumetric models gives this approach a number of distinct advantages over more traditional surface-based methods. First, there is no need to identify "features" which is important when inspecting objects whose features are difficult to identify. Second, volumetric inspection lends itself naturally to multi-sensor applications. Finally, true 3-D comparisons of the reference and sensed objects can be easily carried out using volumetric models.< >
The problem of position control and unit consistent hybrid position/force control of the Anthrobot robot hand is considered. A dynamic model, for the Anthrobot, is used to develop the control laws. The experimental re...
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The problem of position control and unit consistent hybrid position/force control of the Anthrobot robot hand is considered. A dynamic model, for the Anthrobot, is used to develop the control laws. The experimental results of applying the control to the Anthrobot are discussed.< >
An anthropomorphic dextrous robotic hand (Anthrobot-2) is described. Its forward and inverse kinematics, as well as its Jacobians are developed as the first step toward its utilization for either teleoperation or auto...
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An anthropomorphic dextrous robotic hand (Anthrobot-2) is described. Its forward and inverse kinematics, as well as its Jacobians are developed as the first step toward its utilization for either teleoperation or autonomous operation. The Anthrobot frames are assigned using the modified Denavit-Hartenberg formulation, referred to as the hand frame. A finger with proximal link contact point is described.< >
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