{"title":"Robust generalized predictive control of Stewart-Gough platform","authors":"F. A. Lara-Molina, J. M. Rosário, D. Dumur","doi":"10.1109/LARC.2011.6086793","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086793","url":null,"abstract":"This paper addresses the position tracking control application of a Stewart-Gough platform using robust generalized predictive control. The robustification of GPC against measurement noise using Youla parameterization is performed. The simulation of the complete model of the Stewart-Gough platform is performed on a circular trajectory. The robustified GPC controller is compared with the classical Computed Torque Control (CTC). The robustified GPC controller shows a better performance reducing the effect of the noise in the control signal of the Stewart-Gough Platform.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127611970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Barón, Margareth Alfonso, Pedro Enrique Jimenez
{"title":"Locomotion rehabilitation platform with weight bearing relief for knee osteoarthritis","authors":"A. Barón, Margareth Alfonso, Pedro Enrique Jimenez","doi":"10.1109/LARC.2011.6086818","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086818","url":null,"abstract":"Major kinematic changes occurring in gait pattern in patients affected by osteoarthritis of the knee are due to pain which brings decreased physical activity and life quality impairment. Decreased physical activity generated by pain results in lower energy consumption, body weight rise and increase in knee load and pain. Reduction in weight-bearing load to treat the pain of osteoarthritis is well documented. In Tunja (Boyacá-Colombia) a weight bearing relief device is used by researchers to promote physical activity controlling load and decreasing pain. A platform will be used to control locomotive rehabilitation and asses the ideal load relief on osteoarthritis knee to promote physical activity, body weight reduction and symptoms improvement.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131265965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An autonomous ground explorer utilizing a vision-based approach to indoor navigation","authors":"E. Mattison, Adriano Garcia","doi":"10.1109/LARC.2011.6086807","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086807","url":null,"abstract":"We introduce a vision system based approach to autonomous navigation and mapping in an indoor environment. Our goal is to eventually use a common processing system that relies on using airborne and ground vehicles. This paper presents our initial results for a ground vehicle and demonstrates the potential of the vision based system for a solution that combines airborne vehicles with ground vehicles. The Autonomous Ground Explorer (AGE) described here serves as a test vehicle to validate the algorithms that will be integrated into our aerial vehicle that is under development. The ground explorer uses only vision (three basic web cameras augmented with simple laser pointers) to efficiently move within building corridors. It can estimate distance in three directions by evaluating the location of laser points within its fields of vision. The ground explorer navigates hallways and makes directional decisions based on the following processes: tracking the corridor's visual vanishing point, anticipating intersections using odometry and corner edge detection, identifying and classifying intersections based on distance measurements and vanishing points, and completing controlled turns based on a confidence factor in its location on a calculated route within a simplified topological map. Experimental results show the effectiveness of our approach and the promise of our combined ground/aerial system concept.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131461156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simulation model of public transportation system using multiagent approach by means of Petri Nets: Bogotá study case","authors":"D. Lopez, A. Triana, H. Chamorro","doi":"10.1109/LARC.2011.6086820","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086820","url":null,"abstract":"In this paper a simulation model for a very used public transportation system in Bogotá (Transmilenio) by means of Petri Nets is presented. The modeling of the system is done using a multiagent approach in order to simulate and analyse the resources involved to supply the passengers' demand in rush hour. Petri Nets are used in order to simplify the complexity of the model graphically to describe the system behaviour. Real data are acquired to make the model more realistic. Furthermore, an experimental methodology is used to verify the accuracy of the proposed model and validate the simulation results.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131706593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. ChristianG.Quintero, J. López, R. FranciscoA.Bertel
{"title":"Coordination mechanisms for a multi-agent robotic system applied to search and target location","authors":"M. ChristianG.Quintero, J. López, R. FranciscoA.Bertel","doi":"10.1109/LARC.2011.6086817","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086817","url":null,"abstract":"In this paper we consider the problem of searching an unknown number of targets in static environment by a team of robots. As the targets positions and distribution are uncertain; the goal is to minimize the overall exploration time. Using cell maps, the key problem can be solved choosing the suitable cell for the individual robots so that they simultaneously explore different regions of the environment. We present an intelligent approach for the coordination of multiple robots, in which contrast to previous approaches, able to perform task allocations taking into account the trade-off between the costs of reaching the cell and its utility. This utility function has been modeled using neural networks and optimized with genetic algorithms. Besides, if the task produces some conflict between robots, a negotiation algorithm is used to collision avoidance. The proposed approach has been implemented in real-world experiments and its performance tested in simulation runs. The results given in this paper demonstrate that our coordination mechanism significantly reduces the exploration time and increase the effectiveness compared to previous approaches.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116240352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Motion analysis of an ellipsoidal kinematic closed chain","authors":"Kamilo Melo, Alexandra Velasco, C. Parra","doi":"10.1109/LARC.2011.6086798","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086798","url":null,"abstract":"Concerning robotics, one topic of interest is locomotion and specifically non-conventional locomotion that can be oriented to design robots that could pass through different surfaces in an autonomous way, with the lower power consumption possible. An approach to it, is a modular snake robot in a closed chain configuration (as a rolling wheel) instead of a creeping locomotion. In this article we propose a general framework for analyzing the rolling motion of a closed robotic chain. We give a general view of the state of the art concerning limbless locomotion; we explain the kinodynamics of the proposed robot and its motion, we obtain a model based on the inverted pendulum analysis, and we present the steps to follow for the analysis of any closed kinematic chain. Results are compared with experiments reported by other authors using the CKBot modular robot in dynamic rolling locomotion configuration. Some metrics are also used to validate the analysis and make a comparison between experiments done with the real robot, and the model proposed here.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116360637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A comparison of Extended Kalman Filter and Levenberg-Marquardt methods for neural network training","authors":"P. Deossa, J. Patino, J. Espinosa, F. Valencia","doi":"10.1109/LARC.2011.6086835","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086835","url":null,"abstract":"This paper presents a performance comparison of both the Levenverg-Marquardt and Extended Kalman Filter methods for neural network training. As a testbed, an indoor localization problem was solved by the neural network from the RSSI data obtained through a experimental measurement. Both methods were used to train the network, and the MSE (mean squared error) was employed as the performance metric.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129237018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carlos Agudelo, F. M. Anglada, Eduardo Quiles Cucarella, E. G. Moreno
{"title":"Intelligent alarm management","authors":"Carlos Agudelo, F. M. Anglada, Eduardo Quiles Cucarella, E. G. Moreno","doi":"10.1109/LARC.2011.6086852","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086852","url":null,"abstract":"An ergonomic problem for the plant operators has appeared in the modern electronic control systems, in which configure an alarm is very easy. We present a methodology and an intelligent software tool to manage alarms and make early fault detection and diagnosis in industrial processes, integrating three techniques to detect and diagnose faults. The three techniques use available information in industrial environments: The alarms of the electronic control system; the fault knowledgebase of the process, formulated in terms of rules; and a simplified model used to detect disturbances in the process. A prototype in a Fluid Catalytic Cracking process is shown.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126062675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Pérez, M. J. Betancur, Jose R. Martinez, O. P. Torres, J. Bustamante
{"title":"Force feedback algorithms for master slave surgical systems","authors":"V. Pérez, M. J. Betancur, Jose R. Martinez, O. P. Torres, J. Bustamante","doi":"10.1109/LARC.2011.6086811","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086811","url":null,"abstract":"A teleoperated system with haptic feedback helps to improve the skills of an operator who is located in a “remote area”. These systems have many applications, one of them is minimally invasive robotic surgery, in which small incisions are used for surgical access with the aid of robotic systems controlled by a surgeon. In medical science, robotic surgery is the subject of many studies because of the advantages offered, such as better cosmetic results, reduced recovery time, and more precise surgical movements. This article presents a conceptual model of a robotic system for cardiac surgery, that uses a master-slave configuration, to implement bilateral algorithms for manipulating a robotic arm integrated with a commercial 3D joystick with force feedback, the Novint Falcon,. There are several important aspects in the implementation: (a) to guarantee a fixed point of contact between the skin of the patient and the surgical instruments, as established by the surgeon. (b) to provide realistic force feedback in three degrees of freedom, which is the main objective of this work, and (c) to accurately track the position demanded by the surgeon to the robotic arm. Some test are presented for the conceptual validation of the above points using a didactic commercial robot.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114126176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Uribe, S. Alves, J. M. Rosário, H. Filho, B. Perez-Gutierrez
{"title":"Mobile robotic teleoperation using gesture-based human interfaces","authors":"A. Uribe, S. Alves, J. M. Rosário, H. Filho, B. Perez-Gutierrez","doi":"10.1109/LARC.2011.6086812","DOIUrl":"https://doi.org/10.1109/LARC.2011.6086812","url":null,"abstract":"In this work a natural interaction framework for programming a mobile robot with gestures is developed using two low-cost human interface devices available on the market. The use of natural motion has been growing among user interface researches and developers for offering comfortable ways of interacting with the devices around us. Some examples can be seen in how touch screens, accelerometers and image processing have influenced our interactions with cellphones, gaming devices and computers, thus, allowing us to take advantage of our body ergonomics. The objective of this work is to integrate an intuitive tool for teleoperating a mobile robot through gestures as an alternative input for encouraging non-experts to relate with robotics and ease navigation tasks. For accomplishing the objective of this work, the mobile robots programming architecture is studied and integrated with those of the user interfaces for allowing the teleoperation of the robotics device. To check how the implemented framework impacts the user interaction, a navigation scenario with obstacles is used for validating the suitability of the gesture-based navigation.","PeriodicalId":419849,"journal":{"name":"IX Latin American Robotics Symposium and IEEE Colombian Conference on Automatic Control, 2011 IEEE","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133438295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}