Temat: Motion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Postural Equilibrium Criteria Concerning Feet Properties for Biped Robots
Autorzy:: González de Alba, A.
Zielinska, T.
Powiązania:: https://bibliotekanauki.pl/articles/384692.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: biped robots
motion analysis
Opis:: This article presents a study on the postural equilibrium conditions for biped robots. Criteria for dynamic walking, such as ZMP and CoP are introduced and their similarities discussed. We also introduce the effects of a compliant foot and take them into consideration during the evaluation of the criteria. A model of a planar biped is used to imitate the movements of a human subject as recorded by the VICON motion capture system. In order to estimate the criteria, body segments accelerations and ground reaction forces are needed. ZMP and CoP are analyzed during both single and double support phases for the model’s motion. A linear shift function is used to transport the load of the biped between the supporting legs during the double support phase. We compare simulated CoP trajectories obtained using a rigid foot and a compliant, deformable spring-damper system located between the ankle joint and the sole of the foot. It is seen that the foot’s deformation smoothes the CoP trajectory and improves the biped’s stability.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 1; 22-27
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Robot modelling, perception, and motion synthesis
Autorzy:: Tchoń, K.
Zieliński, C.
Powiązania:: https://bibliotekanauki.pl/articles/384804.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: robot modelling
perception
motion synthesis
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2017, 11, 2; 3-4
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Parallel Robot Motion Applied to Flight Simulator Control Law Synthesis
Autorzy:: Szczepański, J.
Powiązania:: https://bibliotekanauki.pl/articles/950821.pdf
Data publikacji:: 2008
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: simulator motion system
parallel robot
Opis:: The herein proposed method of synthesis of the parallel robot applied as flight simulator motion system control laws came from author's 20 year experience in developing, integrating and testing the control laws and their software dedicated to different simulators. The goal of the simulator motion control law synthesis at the proposed method is not minimizing cost function taken at the beginning of that synthesis process but achieving positive assessment by the operator (e.g. pilot) team on the basis of simulator motion perception. Procedures adopted for those simulators FAT (Final Acceptance Tests) within proposed method were based on standard military equipment testing methods. Performing the final and the most important tests by the real device operators (pilots) was the new element here. The other important modification of the classical method was introducing the simulated object acceleration derivative into the filters controlling the simulator motion system. It appeared to be particularly effective in the cases of highly manoeuvrable airplane simulators.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 4; 52-58
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Optimization - based approach for motion planning of a robot walking on rough terrain
Autorzy:: Belter, D.
Powiązania:: https://bibliotekanauki.pl/articles/950764.pdf
Data publikacji:: 2013
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: walking robot
motion planning
rough terrain
locomotion
Opis:: The paper presents a motion planning algorithm for a robot walking on rough terrain. The motion-planer is based on the improved RRT (Rapidly Exploring Random Tree)-Connect algorithm. The Particle Swarm Optimizati on (PSO) algorithm is proposed to solve a posture optimization problem. The steepest descent method is used to determine the postion of the robot's feet during the swing phase. The gradient descent method is used for smoothing the final path. The properties of the motion planning algorithm are presented in four cases: motion planning over a bump, concavity, step and rough terrain mocup. The maximal sizes of particular obstacle types traversable by the Messor robot with the new, optimized motion plan are given.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2013, 7, 4; 34-41
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Real-time obstacle avoidance using harmonic potential functions
Autorzy:: Szulczyński, P.
Pazderski, D.
Kozłowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/384802.pdf
Data publikacji:: 2011
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: motion planning
obstacle avoidance
mobile robot
harmonic function
Opis:: The paper presents a solution of motion planning and control of mobile robot in a two-dimensional environment with elliptical static obstacle based on hydrodynamics description. Theoretical background refers to solution of Laplace equation using complex algebra. The method of designing complex potential with respect to stationary elliptical obstacle and stationary goal is formally shown. Next, the planning motion problem is extended assuming that the goal is moving. Then results of motion planning is used in order to design closed-loop control algorithms which is based on decoupling technique. Theoretical considerations are supported by numerical simulations illustrating example results of motion planning and control.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2011, 5, 3; 59-66
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: FDA* : a focused single‐query grid based path planning algorithm
Autorzy:: Boumediene, Mouad
Mehennaoui, Lamine
Lachouri, Abderazzak
Powiązania:: https://bibliotekanauki.pl/articles/2141836.pdf
Data publikacji:: 2021
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: motion planning
grid‐based
path planning
mobile robots
Opis:: Square grid representations of the state‐space are a commonly used tool in path planning. With applications in a variety of disciplines, including robotics, computational biology, game development, and beyond. However, in large‐scale and/or high dimensional environments the creation and manipulation of such structures become too expensive, especially in applications when an accurate representation is needed. In this paper, we present a method for reducing the cost of single‐query grid‐based path planning, by focusing the search to a smaller subset, that contains the optimal solution. This subset is represented by a hyperrectangle, the location, and dimensions of which are calculated departing from an initial feasible path found by a fast search using the RRT* algorithm. We also present an implementation of this focused discretization method called FDA*, a resolution optimal algorithm, where the A* algorithm is employed in searching the resulting graph for an optimal solution. We also demonstrate through simulation results, that the FDA* algorithm uses less memory and has a shorter run‐time compared to the classic A* and thus other graph‐based planning algorithms, and at the same time, the resulting path cost is less than that of regular RRT based algorithms.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 3; 37-43
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Motion planning of the underactuated manipulators with friction in constrained state space
Autorzy:: Ratajczak, A.
Janiak, M.
Powiązania:: https://bibliotekanauki.pl/articles/384792.pdf
Data publikacji:: 2011
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: Constrained Motion Planning
underactuated manipulators
endogenous configuration space
Opis:: This paper addresses the constrained motion planning problem for passive joint manipulators with friction. Constraints are imposed on a system state space vector. The dynamics of underactuated manipulators are described by a control-affine system with a drift term. In order to solve the constrained motion planning problem the imbalanced Jacobian algorithm derived from an endogenous configuration space approach is used. The state space constraints are included into the system representation of the manipulator dynamics. The extended system is subject to regularisation because of the Jacobian singularities, then the unconstrained motion planning problem is solved for the regularised system. The solution of the motion planning problem for this system is equivalent to the solution of the constrained motion planning problem for an original system. Performance of the imbalanced Jacobian algorithm has been demonstrated with series of simulation for the two kinds of manipulators with and without friction.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2011, 5, 3; 33-40
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: A Hybrid System Control Approach to Biped Robot Control
Autorzy:: Yin, Y.
Hosoe, S.
Powiązania:: https://bibliotekanauki.pl/articles/384996.pdf
Data publikacji:: 2008
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: biped robot
MLD model
periodic motion
hybrid system control
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 4; 64-69
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Motion planning of wheeled mobile robots subject to slipping
Autorzy:: Zadarnowska, K.
Oleksy, A.
Powiązania:: https://bibliotekanauki.pl/articles/384800.pdf
Data publikacji:: 2011
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: dynamics
kinematics
motion planning
slipping effect
wheeled mobile robot
Opis:: Most dynamic models of wheeled mobile robots assume that the wheels undergo rolling without slipping, thus in general wheeled mobile robots are considered as nonholonomic systems. This paper deals with the problem of motion planning of mobile robots, whose nonholonomic constraints have been violated during the motion. The slipping phase is studied in details. A static model of interaction forces between wheels and ground is adopted by means of the singular perturbation approach [2]. A novel control theoretic framework for mobile robots subject to slipping is defined: both kinematics and dynamics of a mobile robot are modeled as a control system with outputs, the performance of a locally controllable system is nontrivial, the Jacobian of the mobile robot is defined in terms of the linear approximation to the system [36]. A novelty of the methodology consists in respecting of the analogy between the stationary and mobile robots and deriving performance characteristics from local controllability. In this paper we address the problem of motion planning by means of the Jacobian pseudo inverse algorithm. The effectiveness of the Jacobian pseudo inverse motion planning algorithm is demonstrated with reference to differential drive type robot (Pioneer 2DX) subject to slipping.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2011, 5, 3; 49-58
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Path planning optimization and object placement through visual servoing technique for robotics application
Autorzy:: Patel, Sumitkumar
Israni, Dippal
Shah, Parth
Powiązania:: https://bibliotekanauki.pl/articles/950976.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: visual servoing
features
coordinates
kinematics
disparity
optimization
motion estimation
Opis:: Visual servoing define a new methodology for vision based control in robotics. Vision based action involve number of actions that move a robot in response of results of camera analysis. This process is important to operate and help robot to achieve a specific goal. The main purpose of visual servoing consists of considering a vision system by specific sensor dedicated to involve control servo loop and task. In this article, three visual control scheme: Image Based Visual Servoing (IBVS), Position Based Visual Servoing (PBVS) and Hybrid Based Visual Servoing (HBVS) are illustrated. The different terminologies are represented through effective workflow of robot vision. IBVS method concentrate on the image features that are immediately available in the image. This experiment is performed by estimating distance between camera and object. PBVS consist of moving object 3-D parameters to estimate measurement. This paper showcases PBVS using kuka robot model. HBVS uses the 2D and 3D servoing by combining visual sensors also it overcomes challenges of previous two methods. This paper represents HBVS method using IPR communication robot model.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 1; 39-47
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Chaotic Mobile Robot Workspace Coverage Enhancement
Autorzy:: Fahmy, A. A.
Powiązania:: https://bibliotekanauki.pl/articles/384684.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: chaos
mobile robot
chaotic motion
chaotic mobile robot
Chua's circuit
Opis:: The chaotic mobile robot implies a mobile robot with a controller that ensures chaotic motions. Chaotic motion is characterized by the topological transitivity and the sensitive dependence on initial conditions. Due to the topological transitivity, the chaotic mobile robot is guaranteed to scan the whole connected workspace. The Chua's circuit, which is low cost and easy to construct for trajectory generators, exhibits a rich variety of bifurcation and chaotic behaviors. This particular circuit is analyzed. It is shown how to generate a sequence of chaotic behaviors by varying the value of a linear resistor of the Chua's circuit. According to the simulation, with best adjusting parameters, and mapping the appropriate chaotic variables to robot's kinematic variables, the chaotic behavior is enhanced in the sense of wide area coverage and evenness index.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 1; 33-38
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: A rational B-Spline curves in robot collision - free movement planning
Autorzy:: Reclik, D.
Kost, G. G.
Powiązania:: https://bibliotekanauki.pl/articles/384235.pdf
Data publikacji:: 2008
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: robot's motion planning
non-collision trajectory
NURBS and B-Spline curves
Opis:: In this paper there is described the using of 2D robot workspace analysis method with smoothing process by using B-Spline curves [7]. The robot workspace analysis is necessary to generate the collision-free movement paths. This paper is connected with a project, which will be ended with fully functional added application in robot off-line programming. In the last part of this project the authors created the motion planner based on grading function and Markov chains. This planner allows determining the collision-free trajectory of robot bunch. Determining the collision-free trajectory generates a lot of step functions – all movements were possible in only one direction (parallel to Cartesian axes) [1,7]. The worked out planner choose the best path – by shortest movement length or shortest movement time criterion. Achieved path is optimised and smooth by using NURBS and B-Spline curves [2,4,5], which is the main goal of this paper. Smoothing and time-function making is very important, because it allows getting the speed and acceleration data, which are necessary in robot controlling. B-Spline curves fulfil continuous first and second derivate condition. Another advantage of using B-Spline is a possibility to enlarge the movement quality by using the minimal acceleration criteria. This allows growing the steadiness of movement.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 3; 38-42
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: An adversarial explainable artificial intelligence (XAI) based approach for action forecasting
Autorzy:: Dutta, Vibekananda
Zielińska, Teresa
Powiązania:: https://bibliotekanauki.pl/articles/1837356.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: action prediction
explainable artificial intelligence
object affordances
structured database
motion trajectories
Opis:: Despite the growing popularity of machine learning technology, vision‐based action recognition/forecasting systems are seen as black‐boxes by the user. The effecti‐ veness of such systems depends on the machine learning algorithms, it is difficult (or impossible) to explain the de‐ cisions making processes to the users. In this context, an approach that offers the user understanding of these re‐ asoning models is significant. To do this, we present an Explainable Artificial Intelligence (XAI) based approach to action forecasting using structured database and object affordances definition. The structured database is sup‐ porting the prediction process. The method allows to vi‐ sualize the components of the structured database. Later, the components of the base are used for forecasting the nominally possible motion goals. The object affordance explicated by the probability functions supports the se‐ lection of possible motion goals. The presented methodo‐ logy allows satisfactory explanations of the reasoning be‐ hind the inference mechanism. Experimental evaluation was conducted using the WUT‐18 dataset, the efficiency of the presented solution was compared to the other ba‐ seline algorithms.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 4; 3-10
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: State of the Art in Predictive Control of Wheeled Mobile Robots
Autorzy:: Harasim, P.
Trojnacki, M.
Powiązania:: https://bibliotekanauki.pl/articles/384731.pdf
Data publikacji:: 2016
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: wheeled mobile robot
motion control
predictive control
model-based control
optimization
Opis:: The paper is concerned with the problem of tracking control of wheeled mobile robots (WMRs) using predictive control systems. Various kinematic structures of WMRs important from the point of view of motion control are discussed. A hierarchical approach to the problem of motion control of this kind of robots is presented. The problems of trajectory tracking and path following control of WMRs are briefly discussed. The methods of predictive control of WMRs are described in detail and the following aspects relevant to predictive control are considered: kinematic structures of robots, slip of wheels and its compensation, assumed constraints, methods of optimization of the objective function, problems of model nonlinearity, linearization and discretization, stability of the control system and use of the state observers.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2016, 10, 1; 34-42
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Implementation of the chaotic mobile robot for the complex missions
Autorzy:: Fahmy, A. A.
Powiązania:: https://bibliotekanauki.pl/articles/384403.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: chaos
chaotic motion
chaotic mobile robot
Chua's circuit
Arnold and Lorenz equations
Opis:: Mobile robotics, after decades of continuous development, keeps up as an intensive research issue because of its ever- increasing application to different domains and its economical and technological relevance. Interesting applications can be seen in robots performing floor-cleaning tasks, executing industrial transportation, exploring volcanoes, scanning areas to find explosive devices, and so on. a chaotic signal for an autonomous mobile robot is to increase and to take advantage of coverage areas resulting from its travelling paths. The chaotic behavior of the mobile robot is achieved by adding nonlinear equations into the robot kinematic equations, like Arnold, Lorenz, and Chua’s equations, that are well known equations for had a chaotic behavior. The performance of the three guiding signals for robotics system is evaluated in the sense of the wide area coverage, the evenness index, and the total trajectory distance.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 2; 8-12
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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