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The Stewart Platform Manipulator : Dynamic Formulation, Singularity Avoidance And RedundancyDasgupta, Bhaskar 12 1900 (has links) (PDF)
No description available.
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Planejamento otimizado de trajetória para um robô cilíndrico acionado pneumaticamenteMissiaggia, Leonardo January 2014 (has links)
Este trabalho consiste na elaboração de uma estratégia para a geração de trajetórias otimizadas para um robô cilíndrico de cinco graus de liberdade acionado pneumaticamente. Como resultado da aplicação do método desenvolvido obtêm-se as trajetórias no espaço das juntas que resultam no movimento adequado do efetuador do robô, de acordo com algum critério de otimização. Para a obtenção das trajetórias das juntas do robô a partir de uma dada trajetória desejada para o efetuador, resolveu-se o problema de cinemática inversa por meio de uma abordagem algébrica. Para a geração de trajetórias entre os pontos no espaço de trabalho do robô propõe-se a utilização de um algoritmo de aproximação de pontos através de splines compostas por polinômios de sétimo grau. Essa escolha garante a continuidade da função de posição, bem como de suas três primeiras derivadas, sendo essa uma condição necessária para a implantação de importantes leis e estratégias de controle (como, por exemplo, a estratégia em cascata, utilizada com sucesso no controle de sistemas servopneumáticos). O método proposto para a geração de splines possibilita, através do ajuste de parâmetros em função da exigência de cada aplicação, a obtenção de curvas no espaço das juntas com valores otimizados de jerk, aceleração ou velocidade. Para aplicação na geração de trajetórias para o robô, a interpolação dos pontos é realizada no espaço dos atuadores a fim de fornecer ao controlador as curvas de referência para posição, velocidade, aceleração e jerk. Para a demonstração da aplicação do método no seguimento de trajetórias, são utilizadas como referência curvas tridimensionais cujos valores numéricos são comparados com os resultados fornecidos a partir da metodologia proposta. Assim, uma vez calculadas as trajetórias em cada uma das juntas através da cinemática inversa, utiliza-se as transformações homogêneas da cinemática direta do robô, obtidas a partir do método de Denavit-Hartenberg, para obter a trajetória do efetuador e verificar a funcionalidade do modelo resultante. / This work consists of developing a strategy to generate optimized trajectories for a cylindrical robot with five degrees of freedom which is actuated pneumatically. As a result of the application of the developed method, trajectories in joint space are obtained and result in the proper motion of the robot’s end-effector according to a given optimizing criteria. In order to obtain the trajectories of the robot’s joints from a given desired trajectory for the end-effector, the problem of inverse kinematics was solved by an algebraic approach. To generate trajectories between points in the robot’s workspace it was proposed the use of an algorithm for approximation of points through splines composed by seventh degrees polynomials. This choice ensures the continuity of the position function as well as its first three derivatives. It is a necessary condition for the implementation of important laws and control strategies (for example, the cascade strategy which is successfully used in servo-pneumatic control systems). The proposed method to generate splines allows, through the adjustment of parameters taking into account the requirements of each application, the obtainment of curves in the joint space with optimized values of jerk, acceleration and speed. In order to apply the method in the generation of trajectories for the robot, the interpolation of the points is performed in the space of the actuators with the purpose of providing the controller reference curves for position, speed, acceleration and jerk. To demonstrate the application of the method in trajectory tracking, three-dimensional curves are used and their numerical values are compared with the results provided by the proposed methodology. Therefore, once the calculated trajectory in each joint through inverse kinematics is obtained, homogeneous transformations of the direct kinematics of the robot, obtained by Denavit-Hartenberg’s method, are employed to find out the trajectory of the end-effector and verify the functionality of the resulting model.
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Toward Deployable Origami Continuum Robot: Sensing, Planning, and ActuationSantoso, Junius 14 November 2019 (has links)
Continuum manipulators which are robot limbs inspired by trunks, snakes, and tentacles, represent a promising field in robotic manipulation research. They are well known for their compliance, as they can conform to the shape of objects they interact with. Furthermore, they also benefit from improved dexterity and reduced weight compared to traditional rigid manipulators. The current state of the art continuum robots typically consists of a bulky pneumatic or tendon-driven actuation system at the base, hindering their scalability. Additionally, they tend to sag due to their own weight and are weak in the torsional direction, limiting their performance under external load. This work presents an origami-inspired cable-driven continuum manipulator module that offers low-cost, light-weight, and is inherently safe for human-robot interaction. This dissertation includes contributions in the design of the modular and torsionally strong continuum robot, the motion planning and control of the system, and finally the embedded sensing to close the loop providing robust feedback.
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Řízení modelu manipulátoru / Control of manipulator modelSimon, Jakub January 2018 (has links)
The task was to study the physical model of the coordinate manipulator. It is controlled by two stepping motors by Schneider Electric and Beckhoff¨s industrial IPC. Then get to know the TwinCAT control software communicating on the EtherCAT network. Then revive the model and create a task to illustrate the functionality of the model with a simple ON / OFF third axis, as well as revive the industrial camera. Then create your own design of a full-fledged third axis and let it be realized. Finally, create an illustration application with the full-fledged third axis manipulator.
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Návrh monitorovací věže pro pozorování terče a fokusu laseru / Design of Monitoring Tower for targetry and laser focusingVirostková, Kristína January 2018 (has links)
The final thesis was created in cooperation with the Institute of Physics of the Czech Academy of Sciences and European Laser Centre ELI Beamlines. It focuses on design of monitoring device for laser target observation in a high-performance laser particle accelerator. Details of scanning and positioning system designated for operation in UHV environment are presented in this thesis. Design changes were performed in scanning system in order to achieve more effective scanning. Positioning system, consisting of precise linear and rotary motors, is newly designed device with high precision positioning under 1 µm in direction of each axis. The purpose of monitoring device is to improve overall scanning precision, shorten targeting process, and increase user comfort.
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Vývoj a návrh nízkonákladového manipulátoru pro interakci s okolím / Development and design of low cost and environment interaction manipulatorŠtěpánek, Vojtěch January 2018 (has links)
This thesis is focused in design low cost robotic manipulator known as SCARA. Chapters are sorted chronological by degrees of manipulator development. Thesis will present metods of inverse kinematics, that determines intaraction between joint rotation and cartesian coordina-tes of gripper. Next it introduces flowcharts for controlling machine and explains the control software determinater especially for microcontroller called Arduino MEGA.
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Adaptivní plánování trajektorie průmyslového robotu / Adaptive Planning of Industrial Robot TrajectoryDizorzi, Matúš January 2019 (has links)
This thesis deals with the extension of the RoScan scanning system features, making its behaviour more secure and adaptivte during scanning of the object on its whole trajectory. This work contains mathematical model of said manipulator, suggested methods to ensure proper behaviour during singularities. New features were added to the RoScan system such as control panel for manipulator control including new format of trajectory log, moving closer or further away from manipulator’s end effector and non adaptive trajectory testing for singularities. Result of this work is ready-to-use.
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Konstrukční návrh manipulačního zařízení ve výrobě pneumatik / Design of Tyre Production Line Manipulation EquipmentSolař, Adam January 2019 (has links)
The subject of this diploma thesis is to design a new construction of the machinery, which is used for manipulation with tire carts in rubber industry. The reason for the new design is to eliminate the main shortcomings of the existing provision. The aim of this project was to elaborate an overview of the current designs of the handling equipment in question and to subsequently construct a new suitable design solution. In addition, several conceptual calculations were needed to be used in the selection of the appropriate electric motor, transmission, pneumatic cylinders and wiring. The relevant parts were designed using structural FEM analyses. The several variants of the solutions were considered for a suitable construction design. Based on these FEM simulations, the relevant parts have been modified in terms of geometry so that the resulting manipulating machinery meets all the criteria, especially regarding safety.
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Automatizovaná třídicí buňka / Automated classification cellLahoda, Vlastimil January 2020 (has links)
To optimize production at Tyco Electronics Czech s.r.o. I designed and implemented an automated classification cell with a collaborative manipulator Universal Robots UR5e and a Cognex camera system. The classification cell is supposed to pick up the loose parts and then optically test them, sorting the parts into output binders following the inspection results. First of all, I had to learn programming language for Universal Robots manipulators and Cognex vision system. Next step was to design and draw an electrical diagram. According to the diagram, I connected the cabinet and other peripherals. I also programmed an algorithm controlling the manipulator arm and inspecting of both cameras. Finally, I successfully tested the functionality of the entire classification cell.
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Senzorika a řízení pohybu pro humanoidního robota / Sensors and motion control for humanoid robotChlaň, Jakub January 2020 (has links)
The presented diploma thesis deals with the design and construction of a simple humanoid robot with two arms attached to a torso. The work was solved as a team project of two authors. Therefore, only the construction of the arm, which is inspired by the kinematics of the human arm is described in more detail. Its construction was the task of the author. An important part of the work is the selection of drives and sensors for the operation of the mechanism. Furthermore, the work presents the procedure of creating a kinematic model of the arms to solve the forward and inverse kinematics problem. For the possibility of motion control, the control of the control unit in Simulink was designed and the drive control was created.
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