References of "Kannan, Somasundar 50002069"
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See detailTowards an Autonomous Vision-Based Unmanned Aerial System against Wildlife Poachers
Olivares Mendez, Miguel Angel UL; Fu, Changhong; Ludivig, Philippe et al

in Sensors (2015), 15(12), 29861

Poaching is an illegal activity that remains out of control in many countries. Based on the 2014 report of the United Nations and Interpol, the illegal trade of global wildlife and natural resources ... [more ▼]

Poaching is an illegal activity that remains out of control in many countries. Based on the 2014 report of the United Nations and Interpol, the illegal trade of global wildlife and natural resources amounts to nearly $213 billion every year, which is even helping to fund armed conflicts. Poaching activities around the world are further pushing many animal species on the brink of extinction. Unfortunately, the traditional methods to fight against poachers are not enough, hence the new demands for more efficient approaches. In this context, the use of new technologies on sensors and algorithms, as well as aerial platforms is crucial to face the high increase of poaching activities in the last few years. Our work is focused on the use of vision sensors on UAVs for the detection and tracking of animals and poachers, as well as the use of such sensors to control quadrotors during autonomous vehicle following and autonomous landing. [less ▲]

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See detailVision Based Fuzzy Control Autonomous Landing with UAVs: From V-REP to Real Experiments
Olivares Mendez, Miguel Angel UL; Kannan, Somasundar UL; Voos, Holger UL

in 23nd IEEE Mediterranean Conference of Control and Automation (MED), 2015, Torremolinos 2015, Spain (2015, June)

This paper is focused on the design of a vision based control approach for the autonomous landing task of Vertical Take-off and Landing (VTOL) Unmanned Aerial Vehicles (UAVs). Here is presented the setup ... [more ▼]

This paper is focused on the design of a vision based control approach for the autonomous landing task of Vertical Take-off and Landing (VTOL) Unmanned Aerial Vehicles (UAVs). Here is presented the setup of a simulated environment developed in V-REP connected to ROS, and its uses for tuning a vision based control approach. In this work, a Fuzzy control approach was proposed to command the UAV’s vertical, longitudinal, lateral and orientation velocities. The UAV’s pose estimation was done based on a vision algorithm and the knowledge of the landing target. Real experiments with a quadrotor landing in a moving platform are also presented. [less ▲]

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See detailAdaptive Control of Aerial Manipulation Vehicle
Kannan, Somasundar UL; Alma, Marouane; Olivares Mendez, Miguel Angel UL et al

in Porceedings of the 4th IEEE INTERNATIONAL CONFERENCE ON CONTROL SYSTEM, COMPUTING AND ENGINEERING (2014, November)

Adaptive Control of an Aerial Manipulation Vehicle is discussed here. The aerial manipulation vehicle consisting of a quadrotor and a robotic arm has a highly coupled dynamics. The nonlinear coupling ... [more ▼]

Adaptive Control of an Aerial Manipulation Vehicle is discussed here. The aerial manipulation vehicle consisting of a quadrotor and a robotic arm has a highly coupled dynamics. The nonlinear coupling introduces additional forces and moments on the quadrotor which prevents it from precisely hovering at a position and tracking of reference trajectory. A decentralized control of robotic arm and quadrotor is considered. The robotic arm is controlled by a PID approach with acceleration feedback, and the quadrotor is controlled by PD method in the inner loop and adaptive position control in the outer loop. The proposed method successfully handles the problem of hover stabilization and trajectory tracking. [less ▲]

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See detailV-REP & ROS Testbed for Design, Test, and Tuning of a Quadrotor Vision Based Fuzzy Control System for Autonomous Landing
Olivares Mendez, Miguel Angel UL; Kannan, Somasundar UL; Voos, Holger UL

in Porceedings of The International Micro Air Vehicle Conference and Competition 2014 (2014, August)

This paper focuses on the use of the Virtual Robotics Experimental Platform (V-REP) and the Robotics Operative System (ROS) working in parallel for design, test, and tuning of a vision based control ... [more ▼]

This paper focuses on the use of the Virtual Robotics Experimental Platform (V-REP) and the Robotics Operative System (ROS) working in parallel for design, test, and tuning of a vision based control system to command an Unmanned Aerial Vehicle (UAV). Here, is presented how to configure the V-REP, and ROS to work in parallel, and how to use the developed packages in ROS for the pose estimation based on vision and for the design and use of a fuzzy logic control system. It is also shown in this paper a novel vision based fuzzy control approach for the autonomous landing task on a static and on a moving platform. The control system is based on four fuzzy logic controllers (FLC) working in parallel on an external control loop based on the visual information. All the controllers were designed and tuned to command the vertical, longitudinal, lateral, and heading velocities of the UAV. [less ▲]

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See detailUsing the Cross-Entropy method for control optimization: A case study of see-and-avoid on unmanned aerial vehicles
Olivares Mendez, Miguel Angel UL; Fu, Changhong; Kannan, Somasundar UL et al

in Control and Automation (MED), 2014 22nd Mediterranean Conference of (2014, June)

This paper presents an adaptation of the Cross-Entropy (CE) method to optimize fuzzy logic controllers. The CE is a recently developed optimization method based on a general Monte-Carlo approach to ... [more ▼]

This paper presents an adaptation of the Cross-Entropy (CE) method to optimize fuzzy logic controllers. The CE is a recently developed optimization method based on a general Monte-Carlo approach to combinatorial and continuous multi-extremal optimization and importance sampling. This work shows the application of this optimization method to optimize the inputs gains, the location and size of the different membership functions' sets of each variable, as well as the weight of each rule from the rule's base of a fuzzy logic controller (FLC). The control system approach presented in this work was designed to command the orientation of an unmanned aerial vehicle (UAV) to modify its trajectory for avoiding collisions. An onboard looking forward camera was used to sense the environment of the UAV. The information extracted by the image processing algorithm is the only input of the fuzzy control approach to avoid the collision with a predefined object. Real tests with a quadrotor have been done to corroborate the improved behavior of the optimized controllers at different stages of the optimization process. [less ▲]

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See detailSetting up a testbed for UAV vision based control using V-REP amp; ROS: A case study on aerial visual inspection
Olivares Mendez, Miguel Angel UL; Kannan, Somasundar UL; Voos, Holger UL

in Unmanned Aircraft Systems (ICUAS), 2014 International Conference on (2014)

This paper focuses on the use of the Virtual Robotics Experimental Platform (V-REP) and the Robotics Operative System (ROS) working in parallel for design, test, and tuning of a vision based control ... [more ▼]

This paper focuses on the use of the Virtual Robotics Experimental Platform (V-REP) and the Robotics Operative System (ROS) working in parallel for design, test, and tuning of a vision based control system to command an Unmanned Aerial Vehicle (UAV). Here, is presented how to configure the V-REP and ROS to work in parallel, and the developed software in ROS for the pose estimation based on vision and for the design and use of a fuzzy logic control system. It is also explained how to interact with a virtual and a real quadrotor (QR) to command it for the specific task of aerial visual inspection task. The control system approach presented in this work is based on three fuzzy logic controllers (FLC) working in parallel on an external control loop based on the visual information. The three controllers were designed and tuned to command the vertical, longitudinal and lateral velocities of the UAV. The task to accomplish by the control system is to modify the position of the UAV in real time for the visual inspection of an object or specific parts of a structure. The virtual environment of the V-REP was used to tune manually the control system. Finally, the behavior of the tuned controllers was validated by a set of tests in a real environment with a quadrotor. [less ▲]

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See detailModeling and Control of Aerial Manipulation Vehicle with Visual sensor
Kannan, Somasundar UL; Olivares Mendez, Miguel Angel UL; Voos, Holger UL

in Second Workshop on Research, Development and Education on Unmanned Aerial Systems (RED-UAS 2013) (2013, November)

Modeling and control of a Quadrotor with robotic arm which uses vision sensor is discussed. A quadrotor model coupled with a two link manipulator is first developed and then the integrated control ... [more ▼]

Modeling and control of a Quadrotor with robotic arm which uses vision sensor is discussed. A quadrotor model coupled with a two link manipulator is first developed and then the integrated control mechanism is investigated. An Image Based Visual Servo system is introduced and then used with the aerial manipulator to successfully perform specific tasks of positioning and stabilization during manipulation. [less ▲]

Detailed reference viewed: 243 (22 UL)