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In order to solve the problems of flexible joint space manipulators in dynamics modeling and simulation, a model with three-dimensional four-link flexible-joint manipulators is taken into account. Considering the nonlinear stiffness coefficient of the torsion-spring, and inertia coupling, the dynamics model of flexible-joint manipulators with revolute joints is established by applying the Lagrange...
To trajectory programming, then bring about the high intelligent requirements according to the planned path for trajectory tracking. The static circumstance trajectory programming Based on grid circumstance model has been researched and analyzed. The ant-colony algorithm, which has been analyzed and proved to be effective by the simulation result, has been advanced.
In this study, we explore the use of nondeterministic search trajectories to accomplish a two-fold mission of mobile robot search for a stationary target while avoiding counter-targeting by the adversary throughout the operation. We analyze the characteristics associated with a Levy distribution of search leg lengths to generate appropriate randomized search trajectories. We discuss the alteration...
This paper discusses a dynamic nonprehensile manipulation of a deformable object, where the shape of a thin object is dynamically controlled by the plate's rapid motion. After explaining the manipulation principle, we introduce a simplified analytical model where an object is modeled by two mass points and the plate has two degrees of freedom: a translational motion and a rotational one. After categorizing...
We report on the incorporation of a model of field emitters based on a Point Charge Model (PCM) that allows for rapid and analytical representations of tip current, variation, and emission statistics and its implementation and usage in the MICHELLE Particle-In-Cell (PIC) code to model the impact of emission variation on current characteristics and emittance. Rather than cold field emission characterized...
Location Based Service (LBS), although it greatly benefits the daily life of mobile device users, has introduced significant threats to privacy. In an LBS system, even under the protection of pseudonyms, users may become victims of inference attacks, where an adversary reveals a user's real identity and complete moving trajectory with the aid of side information, e.g., accidental identity disclosure...
This paper explores the effect of different types of competitive advertising policies in duopolistic dynamic models that are variants of the classical Vidale-Wolfe and Lanchester models. The firm with a perceived lower share of the market switches on an extra control effort in its attempt to get a larger share than its competitor. An analysis of the dynamics of the proposed policies is carried out,...
Visual Analytics offers various interesting methods to explore high dimensional data interactively. In this paper we investigate how it can be applied to support experimenters and developers of simulation software conducting simulation studies. In particular the usage and development of approximate simulation algorithms poses several practical problems, e.g., estimating the impact of algorithm parameters...
Target kill probability is one of the most important tactical and technical index. Its calculation result is attended while the air-to-air missile is finalized the design. This paper is based of engineering such as development, experimentation and campaign. AHP was adopted to calculate air-to-air missile kill probability, by make use of various experiment data in development of air-to-air missile...
This paper reports a comparative experimental evaluation of one non-model-based proportional derivative (PD) 3 degree-of-freedom (DOF) controller and two model-based 3-DOF controllers designed to enable a fully actuated underwater vehicle to perform exact trajectory tracking of the X, Y, and heading degrees-of-freedom. We show the non-model-based controller is capable of performing globally asymptotically...
The present work is focused on the analysis of oxygen migration processes in layered oxide materials, employing molecular dynamics (MD) simulations validated by various experimental results. In addition to standard MD approaches, a new technique was developed to explore anisotropic diffusion by analyzing transfer between special sites - ion trajectory nodes determined without using crystallographic...
A well known circuit - due to Lazzaro - for WTA neural applications is considered. It is a current mode low voltage network based on subthreshold MOS devices. The authors show that the circuit model does not guarantee by itself that all transistors keep staying in the subthreshold region. To this goal, supplementary conditions on the range of input and bias currents are derived. This results in a...
This paper proposes a general trajectory's meta-model and its architecture. In order to provide a unified meta-model and a powerful framework for trajectory's services and queries, the proposed trajectory's data-model has benefited from advantages of both conceptual and ontological space-time. However, it extends the basic data-model of trajectory with new patterns as Space Time Path to describe activities...
The aim of the paper is to develop a upper limb rehabilitation robot system (DPRs) capable of making both patient assessment and robot-aided assessment. Using the rehabilitation robot system, patients can repeatedly train in high efficiency and can replicate many of the human training. In the paper. First a diamond rehabilitation robot(DR)was designed and its model was also given. Then an evaluation...
A population growth model that represents the growth trajectories of individual subjects is critical to study and understand neurodevelopment. This paper presents a framework for jointly estimating and modeling individual and population growth trajectories, and determining significant regional differences in growth pattern characteristics applied to longitudinal neuroimaging data. We use non-linear...
This paper studies the scalability properties of a enhanced parallel cooperative model for trajectory based metaheuristics. Algorithms based on the exploration of the neighborhood of a single solution like simulated annealing (SA) have offered very accurate results for a large number of real-world problems. Although this kind of algorithms are quite efficient, more improvements are needed to tackled...
The consistency of residence time calculations for Lagrangian particles is investigated based on simulations of near-stationary flow within an idealized model area consisting of a channel with a semicircular bay incursion. Variation in residence time is analyzed with respect to two modeling parameters; the horizontal grid resolution of the hydrodynamic model and the representation of particle diffusion...
The Spring-Loaded Inverted Pendulum (SLIP), or monopedal runner, is widely used to depict running and hopping in mammalian and human locomotion, which is also serving as a template for running robot design. This classic model describes quite a simple mechanical system. Nevertheless issue of seeking the accurate analytic solution revealing the characteristics of the motion during stance remains unsettled...
The concepts, operating paradigms, and required technologies of the Next Generation Air Transportation System (NextGen) are still evolving. These continuing changes highlight a need for a modeling platform that can effectively address the complexity of diverse future scenarios and help assess their impact on safety. We discuss this need in detail with respect to the requirements and benefits of such...
The convergence of Particle Swarm Optimization (PSO) is an important and difficult problem. In this article, a new generalized PSO analysis model (γ-GPSO) is offered with discretization technique to second-order analog system of PSO; Order one or second stability areas of parameters is confirmed Using dynamic random analysis method; Stability region, the contour of the spectral radius, the mean, variance...
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