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Stochastic search strategies in 2D using agents with limited perception

IFAC Proceedings Volumes 2012年第22期45卷 650-654页

作者： David Puljiz Maja Varga Stjepan Bogdan University of Zagreb Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering LARICS–Laboratory for Robotics and Intelligent Control Systems Zagreb Croatia Laboratory of Intelligent Systems Ecole Polytechnique Federale de Lausanne 1015 Lausanne Switzerland

Animals use stochastic search strategies to find a potential nest or to localize the food source. Animals do not rely much on the environmental cues or their sensory inputs. Since their cognitive capabilities are rather limited, search strategies are usually simplistic and stochastic. And yet such simple search strategies result in high efficiency in finding potential targets in limited time intervals. Similar problems with perception of the environment and limited computational power and sensory inputs are observed on the mobile robots used in search scenarios. In spite of their limitations, such robotic systems usually perform deterministic search strategies which heavily depend on environmental cues and sensory input. The research question we are addressing in this paper is which stochastic search strategy has the best performance in terms of area coverage and can stochastic search strategies outperform deterministic search strategies.

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controller Design for Simulation control of Intelligent Pneumatic Actuators (IPA) System

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Procedia engineering 2012年 41卷 593-599页

作者： Ahmad ‘Athif Mohd Faudzi Khairuddin bin Osman M.F. Rahmat Nu’man Din Mustafa M. Asyraf Azman Koichi Suzumori Department of Mechatronics and Robotics Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Malaysia Department of Industrial Electronics Faculty of Electrical and Electronics Universiti Teknikal Malaysia Melaka Hang Tuah Jaya 76100 Durian Tunggal Melaka Malaysia Department of Control and Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Malaysia Graduate School of Natural Science and Technology Okayama University Okayama Japan

Intelligent Pneumatic Actuators (IPA) is a system for application that requires better control and accuracy. The purpose of this paper is to present a controller design for simulation control of an IPA system using Proportional-Integrative (PI) controller and pole-placement feedback controller. Before the controller is designed, a model identification is used to obtain the plant using transfer function. The flow for the controller design starts with the theory, mathematical calculation, procedures and the implementation of the simulation control by using MATLAB software. Furthermore, simulation results are compared and analyzed to illustrate the performance of the proposed controllers.

关键词： Intelligent Pneumatic Actuator (IPA) System Identification (SI) PI controller Feedback controller

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Editorial

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Automatika 2012年第2期53卷 103-106页

作者： Martínez-Salamero, Luis Milanovič, Miro Rovira i Virgili University School of Electrical and Computer Engineering Department of Electrical Electronic and Automatic Control Engineering Spain University of Maribor Faculty of Electrical Engineering and Computer Science Institute for Robotics Slovenia

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Phase and Gain Margins in Systems with SMC/HOSM

Phase and Gain Margins in Systems with SMC/HOSM

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American control Conference

作者： J. A. Rosales Y. Shtessel L. Fridman Department of Control En- gineering and Robotics Electrical Engineering Division Faculty of Engi- neering National Autonomous University of Mexico (UNAM) Mexico Electrical Engineering Department University of Alabama Huntsville AL 35806 USA

ISBN: (纸本)9781457710957

The purpose of this work is to identify stability margins in systems controlled by Sliding Mode control (SMC)/High Order Sliding Modes (HOSM). The proposed stability margins characterize robustness of SMC/HOSM against parasitic dynamics and allow to certifying the performance of systems controlled by SMC/HOSM in different applications. An example with third order HOSM control algorithm is presented. The proposed technique is confirmed via phase and gain margin identification for systems with third order HOSM control.

关键词： Sliding-Mode control Variable structure systems Phase stability margin System performance margins gain margin

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Nonlinear mathematical model of an Intelligent Pneumatic Actuator (IPA) systems: Position and force controls

Nonlinear mathematical model of an Intelligent Pneumatic Act...

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Ahmad'Athif Mohd Faudzi Khairuddin Osman M. F. Rahmat Nu'man Din Mustafa M. Asyraf Azman Koichi Suzumori Department of Mechatronics and Robotics Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Malaysia Department of Industrial Electronics Faculty of Electrical and Electronics Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Department of Control and Instrumentation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Malaysia Graduate School of Natural Science and Technology Okayama University Okayama Japan

ISBN: (纸本)9781467325752

This paper presents a nonlinear mathematical modeling of an Intelligent Pneumatic Actuator (IPA) systems and comparison of simulation results with existing experimental results of position and force control data. The derivation method of mathematical equation is referred and reviewed from several literatures. From the mathematical modeling, a simulation analysis was done and compared with existing data from previous research. This paper proposed a reverse engineering method from existing real system on the intelligent actuator that focused more on development of hardware and experimental setup to simulation analysis for validation of the developed model. The simulation results show the affirmation of the developed model based on the mathematical derivation work. The simulation results demonstrate the open-loop and close-loop control systems of position and force tracking control. Finally, performance of this system are analyzed and compared. For future research, this simulation can be used for development of new controllers, validation process and can be applied to real system.

关键词： Mathematical model Valves Force Actuators Equations Pistons

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Robot3D — A simulator for mobile modular self-reconfigurable robots

Robot3D — A simulator for mobile modular self-reconfigurabl...

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International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI)

作者： Lutz Winkler Vojtěch Vonásek Heinz Wörn Libor Přeučil Institute for Process Control and Robotics (IPR) Karlsruhe Institute for Technology (KIT) Germany CTU in Prague Faculty of Electrical Engineering Dept. of Cybernetics CTU in Prague Dept. of Cybernetics

A heterogeneous, mobile, self-reconfigurable and modular robot platform is being developed in the projects SYMBRION and REPLICATOR. The locomotion of the robots as well as forming of the robot organisms will be controlled using evolutionary and bio-inspired techniques. As the robots are not available at the beginning of the projects and experiments are time consuming and carry risks of damaging the robots, the evolutionary algorithms will be run using a simulation. The simulation has to provide realistic movements of a swarm of robots, simulating the docking procedure between the robots as well as simulating organism motion. High requirements are imposed on such a simulator. We developed the Robot3D simulator, which dynamically simulates a swarm of mobile robots as well as robot organisms. In this paper we will give an overview of the simulation framework, we will show first results of performance tests and we will present applications for which Robot3D has already been used.

关键词： Organisms Robot sensing systems Robot kinematics Mobile robots Collision avoidance

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System Identification model for an Intelligent Pneumatic Actuator (IPA) system

System Identification model for an Intelligent Pneumatic Act...

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2012 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Khairuddin Osman Ahmad 'Athif Mohd Faudzi M.F. Rahmat Nu'man Din Mustafa M. Asyraf Azman Koichi Suzumori Department of Industrial Electronics Faculty of Electrical and Electronics Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Department of Mechatronics and Robotics Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Malaysia Department of Control Instrumentation and Automation Engineering Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai Malaysia Graduate School of Natural Science and Technology Okayama University Okayama Japan

Intelligent Pneumatic Actuators (IPA) is a new generation of actuator for Research and Development (R&D). The purpose of this paper is to present the System Identification (SI) technique and procedure for the IPA system. System identification is used to obtain the mathematical model (transfer function) of the IPA system from the measured experimental data. Flow for the SI procedure starts with experimental setup, model structure selection, model estimation, model validation and finally testing with basic controller to prove the operation of IPA system. Auto Regressive with Exogenous Input (ARX) model is chosen as model structure of the system. Based on the input and output data of the system (model validation), best fit criterion and correlation analysis of the residual is analyzed to determine the adequate model to represent the IPA system. The result from SI model shows linear discrete model in order to obtain a discrete transfer function for the IPA system.

关键词： Analytical models Data models Silicon Mathematical model Actuators Robots Correlation

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Fault Detection and Isolation for Nonlinear Systems via HOSM Multiple-Observer *

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IFAC Proceedings Volumes 2012年第20期45卷 534-539页

作者： H. Ríos C. Edwards J. Davila L. Fridman National Autonomous University of Mexico Program of PhD in Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F Control and Instrumentation Research Group Department of Engineering University of Leicester University Road Leicester LE1 7RH UK National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F

The fault detection and isolation problem is studied for a class of nonlinear systems. Under structural conditions, a bank of High-Order Sliding-Mode observers is proposed. The value of the equivalent output injection is used for detecting and isolating particular faults in the system. The proposed method provides finite-time isolation of actuator and plant faults. Simulation results support the proposed approach.

关键词： High-order Sliding-Mode Observers Fault Detection Fault Isolation

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State Estimation and Fault Detection for Linear Switched Systems with Unstable Internal Dynamics *

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IFAC Proceedings Volumes 2012年第20期45卷 522-527页

作者： H. Ríos D. Efimov J. Davila T. Raïssi L. Fridman A. Zolghadri National Autonomous University of Mexico Department of Control Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F The Non-A project at INRIA - LNE Parc Scientifique de la Haute Borne 40 avenue Halley Bt.A Park Plaza 59650 Villeneuve d'Ascq France National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F University of Bordeaux IMS-Lab Automatic Control Group 351 cours de la libration 33405 Talence France Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F.

The problem of simultaneous estimation of the continuous and discrete state with additive faults in linear switched systems is addressed. Under mild structural conditions a robust estimator is designed to solve the problem. The proposed strategy includes a technique for fault detection. Simulation results support the proposed estimation scheme.

关键词： Switched systems Fault detection Unstable internal dynamics Sliding-Mode

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State Estimation for Linear Switched Systems with Unknown Inputs *

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IFAC Proceedings Volumes 2012年第9期45卷 271-276页

作者： H. Ríos D. Efimov J. Davila T. Raïssi L. Fridman A. Zolghadri National Autonomous University of Mexico Department of Control Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F The Non-A project at INRIA - LNE Parc Scientifique de la Haute Borne 40 avenue Halley Bt.A Park Plaza 59650 Villeneuve d'Ascq France Department of Automatic Control CINVESTAV-IPN Mexico D.F. AP-14-740 on leave on National Autonomous University of Mexico Engineering Department of Control and Robotics Division of Electrical Engineering Engineering Faculty C.P. 04510 Mexico D.F University of Bordeaux IMS-Lab Automatic Control Group 351 cours de la libration 33405 Talence France National Polytechnic Institute Section of Graduate Studies and Research ESIME-UPT C.P. 07340 Mexico D.F

The continuous and discrete state estimation problem in linear switched systems with unknown inputs and unstable internal dynamics is addressed. A robust observer based on High-Order Sliding-Mode is proposed to solve ... 详细信息

关键词： Switched systems State estimation Unknown inputs Sliding-Mode

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