New Redundant Manipulator Robot with Six Degrees of Freedom Controlled with Visual Feedback

Author(s):  
Claudio Urrea ◽  
Héctor Araya

The design and implementation stages of a redundant robotized manipulator with six Degrees Of Freedom (DOF), controlled with visual feedback by means of computational software, is presented. The various disciplines involved in the design and implementation of the manipulator robot are highlighted in their electric as well as mechanical aspects. Then, the kinematics equations that govern the position and orientation of each link of the manipulator robot are determined. The programming of an artificial vision system and of an interface that control the manipulator robot is designed and implemented. Likewise, the type of position control applied to each joint is explained, making a distinction according to the assigned task. Finally, functional mechanical and electric tests to validate the correct operation of each of the systems of the manipulator robot and the whole robotized system are carried out.

2020 ◽  
pp. 142-166
Author(s):  
Claudio Urrea ◽  
Héctor Araya

The design and implementation stages of a redundant robotized manipulator with six Degrees Of Freedom (DOF), controlled with visual feedback by means of computational software, is presented. The various disciplines involved in the design and implementation of the manipulator robot are highlighted in their electric as well as mechanical aspects. Then, the kinematics equations that govern the position and orientation of each link of the manipulator robot are determined. The programming of an artificial vision system and of an interface that control the manipulator robot is designed and implemented. Likewise, the type of position control applied to each joint is explained, making a distinction according to the assigned task. Finally, functional mechanical and electric tests to validate the correct operation of each of the systems of the manipulator robot and the whole robotized system are carried out.


2019 ◽  
Vol 16 (6) ◽  
pp. 172988141988547
Author(s):  
Nikolas Wilhelm ◽  
Rainer Burgkart ◽  
Jan Lang ◽  
Carina Micheler ◽  
Constantin von Deimling

In this article, two new compliant control architectures are introduced that utilize null space solutions to decouple force and position control. They are capable to interact with uncertain surfaces and environments with varying materials and require fewer parameters to be tuned than the common architectures – hybrid or impedance control. The general concept behind these approaches allows to consider manipulators with six degrees of freedom as redundant by creating a virtual redundancy with a reduced work space. It will be demonstrated that the introduced approaches are superior regarding orthogonal separation of the Cartesian degrees of freedom and avoid inner singularities. To demonstrate their performance, the controllers are tested on a standard industrial robot (Stäubli, RX90B, six degrees of freedom) that actuates two different biomechanically inspired models of the human knee joint.


2016 ◽  
Vol 26 (1) ◽  
pp. 101
Author(s):  
Mario Borja Borja ◽  
Javier Rojas Tintaya ◽  
Rodney Rodas Regalado ◽  
Carlos Díaz Ramirez ◽  
Cesar Paz Chavez Cesar Paz Chavez

RESUMEN El principal problema en el desarrollo de carreras de especialización en robótica en nuestro país es que no existen laboratorios con brazos robóticos que permitan hacer pruebas de control de posicionamiento, planificación de trayectoria y control con visión artificial y generalmente en entornos académicos se hace experimentos utilizando software de simulación.En el presente trabajo se propone una alternativa para mejorar el aprendizaje en el estudio de control de brazos robóticos utilizando brazos robóticos reales con una plataforma de tecnología abierta de software y hardware que permita a los estudiantes modificar los programas para implementar algoritmos de control de posición de articulaciones, planificación de trayectoria y control con visión artificial.La propuesta es desarrollar la tecnología total del sistema de control del brazos robóticos en la base al análisis de los requerimientos de electrónica y sistema de computo realizar la selección de electrónica de potencia, computadoras industriales basadas en Controlador Digital de señales (DSC), una computadora personal para interface de usuario.Desarrollar el software base para la computadora industrial y el software base para la computadora personal que permita cargar programas en línea a través del puerto serial desde una computadora personal y además una interface de usuario en la computadora que puede ser modificada de acuerdo a la necesidad y utilizar como sistema de control de nivel superior que realiza los cálculos de planificación de trayectoria, problema inverso y otros sistemas de alto nivel de control con visión artificial.Como resultado se obtuvo la plataforma de tecnología abierta que incluye hardware y software para brazos robóticos de hasta seis grados de libertad con motores de corriente continua en las articulaciones de hasta 100 vatios, encoders y sensores de fin de carrera.La plataforma se probó con la mecánica del brazo robótico serial Mitsubishi RV-M1 que cumple con los parámetros electrónicos y constructivos requeridos por el prototipo.Palabras claves: brazos robóticos; control de posición; plataforma abierta.ABSTRACT The main problem in the development of specialization courses in robotics in our country is that there are no laboratories with robotic arms that allow testing positioning control, path planning and control with artificial vision and generally in academic settings is done experiments using software simulation.In this paper an alternative to enhance learning in the study control robotic arms using real robotic arms with an open technology platform software and hardware that allows students to modify programs to implement control algorithms position it is proposed joints, path planning and control with artificial vision.The proposal is to develop the full technology control system of the robotic arms on the basis of the analysis of the requirements of electronic and computer system the selection of power electronics, industrial computers based on digital signal controller (DSC), a computer personnel to user interface.Develop the core software for industrial computer and basic software for the PC that allows load programs online through the serial port from a personal computer and also a user interface on the computer that can be modified according to the need and used as control system upper level that performs calculations path planning, inverse problem and other high-level systems with artificial vision control.As a result the open technology platform that includes hardware and software for robotic arms up to six degrees of freedom with DC motors in the joints of up to 100 watts, encoders and sensors to run was obtained. The platform was tested with the mechanics of serial robotic arm Mitsubishi RV-M1 compliant electronic and construction parameters required by the prototype.Keywords: robotic arms; position control; open platform.


Author(s):  
JAMES L. CROWLEY ◽  
PHILIPPE BOBET ◽  
MOUAFAK MESRABI

This paper describes a layered control system for a binocular stereo head. It begins by a discussion of the principles of layered control. It then describes the mechanical configuration for a binocular camera head with six degrees of freedom. A device level controller is presented which permits an active vision system to command the position of a binocular gaze point in the scene. The final section describes the design of perceptual actions which exploit this device level controller.


Author(s):  
J. Fuentes-Pacheco ◽  
J. Ruiz-Ascencio ◽  
J. M. Rendón-Mancha

This paper presents a binocular eye-to-hand visual servoing system that is able to track and grasp a moving object in real time. Linear predictors are employed to estimate the object trajectory in three dimensions and are capable of predicting future positions even if the object is temporarily occluded. For its development we have used a CRS T475 manipulator robot with six degrees of freedom and two fixed cameras in a stereo pair configuration. The system has a client‐server architecture and is composed of two main parts: the vision system and the control system. The vision system uses color detection to extract the object from the background and a tracking technique based on search windows and object moments. The control system uses the RobWork library to generate the movement instructions and to send them to a C550 controller by means of the serial port. Experimental results are presented to verify the validity and the efficacy of the proposed visual servoing system.


2016 ◽  
Vol 26 (1) ◽  
pp. 101
Author(s):  
Mario Borja Borja

RESUMEN El principal problema en el desarrollo de carreras de especialización en robótica en nuestro país es que no existen laboratorios con brazos robóticos que permitan hacer pruebas de control de posicionamiento, planificación de trayectoria y control con visión artificial y generalmente en entornos académicos se hace experimentos utilizando software de simulación.En el presente trabajo se propone una alternativa para mejorar el aprendizaje en el estudio de control de brazos robóticos utilizando brazos robóticos reales con una plataforma de tecnología abierta de software y hardware que permita a los estudiantes modificar los programas para implementar algoritmos de control de posición de articulaciones, planificación de trayectoria y control con visión artificial.La propuesta es desarrollar la tecnología total del sistema de control del brazos robóticos en la base al análisis de los requerimientos de electrónica y sistema de computo realizar la selección de electrónica de potencia, computadoras industriales basadas en Controlador Digital de señales (DSC), una computadora personal para interface de usuario.Desarrollar el software base para la computadora industrial y el software base para la computadora personal que permita cargar programas en línea a través del puerto serial desde una computadora personal y además una interface de usuario en la computadora que puede ser modificada de acuerdo a la necesidad y utilizar como sistema de control de nivel superior que realiza los cálculos de planificación de trayectoria, problema inverso y otros sistemas de alto nivel de control con visión artificial.Como resultado se obtuvo la plataforma de tecnología abierta que incluye hardware y software para brazos robóticos de hasta seis grados de libertad con motores de corriente continua en las articulaciones de hasta 100 vatios, encoders y sensores de fin de carrera.La plataforma se probó con la mecánica del brazo robótico serial Mitsubishi RV-M1 que cumple con los parámetros electrónicos y constructivos requeridos por el prototipo.Palabras claves: brazos robóticos; control de posición; plataforma abiertaABSTRACT The main problem in the development of specialization courses in robotics in our country is that there are no laboratories with robotic arms that allow testing positioning control, path planning and control with artificial vision and generally in academic settings is done experiments using software simulation.In this paper an alternative to enhance learning in the study control robotic arms using real robotic arms with an open technology platform software and hardware that allows students to modify programs to implement control algorithms position it is proposed joints, path planning and control with artificial vision.The proposal is to develop the full technology control system of the robotic arms on the basis of the analysis of the requirements of electronic and computer system the selection of power electronics, industrial computers based on digital signal controller (DSC), a computer personnel to user interface.Develop the core software for industrial computer and basic software for the PC that allows load programs online through the serial port from a personal computer and also a user interface on the computer that can be modified according to the need and used as control system upper level that performs calculations path planning, inverse problem and other high-level systems with artificial vision control.As a result the open technology platform that includes hardware and software for robotic arms up to six degrees of freedom with DC motors in the joints of up to 100 watts, encoders and sensors to run was obtained. The platform was tested with the mechanics of serial robotic arm Mitsubishi RV-M1 compliant electronic and construction parameters required by the prototype.Keywords: robotic arms; position control; open platform


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