In this paper, we propose a method for global localization using an omni-directional camera. A robot position and angle are estimated by correlation coefficient between topological node-map images and input images. Near-node has the largest correlation coefficient in topological map images. The calculated correlation coefficient makes the mixtures of Gaussians density map. The highest value of ...

This paper describes the application of Particle Swarm Optimization (PSO) for gait optimization on a humanoid robot. The biped gait is modeled by a number of parameterizable trajectories. To achieve omni-directional walking, different sets of gait parameters are optimized for specific walk directions and interpolated later. By using a fitness test based on an acceleration walk, the optimized se...

iv List of Tables xiii List of Figures xiv Chapter 1. Contact Sensing and Mobility in Rough and Cluttered Environments 1 1.1 Related Work . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Omni-directional Holonomic Mobile Robot Suited for Contact 6 1.3 Control Approach . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.3.1 Constrained Dynamics . . . . . . . . . . . . . . . . . . . ...

In this paper, a nonlinear controller design for an omni-directional mobile robot is presented. The robot controller consists of an outer-loop (kinematics) controller and an inner-loop (dynamics) controller, which are both designed using the Trajectory Linearization Control (TLC) method based on a nonlinear robot dynamic model. The TLC controller design combines a nonlinear dynamic inversion an...

We are developing an autonomous mobile robotic system to emulate six degree of freedom relative spacecraft motion during proximity operations. A mobile omni-directional base robot provides x, y, and yaw planar motion with moderate accuracy through six independently driven motors. With a six degree of freedom micro-positioning Stewart platform on top of the moving base, six degree of freedom spa...

Traditional two wheels differential drive normally used on mobile robots have manoeuvrability limitations and take time to sort out. Most teams use two driving wheels (with one or two cast wheels), four driving wheels and even three driving wheels. A three wheel drive with omni-directional wheel has been tried with success, and was implemented on fast moving autonomous mobile robots. This paper...

Abstract: This paper describes how to control an asymmetric wheeled mobile robot with omnidirectional wheels, considering the sample of a robot with three wheels. When flexible motion capabilities are required this robot must be designed to meet the related requirements, namely fast and agile motions as well as robust navigation. This paper provides an overview for the design of kinematics and ...

In this paper, the configuration of a five-limbed modular robot is introduced. A specialised locomotion gait is designed to allow for omni-directional mobility. Due to the large diversity resulting from various gait sequences, a criteria for selecting the best gaits based on their stability characteristics is proposed. A series of simulations is then performed to evaluate the various gaits in d...

In this paper, we present the method of localization system that uses iGPS (indoor GPS) sensor and Omni-directional vision sensor in the environment involving land mark. The indoor GPS (iGPS) is a simple and cheap localization sensor in the indoor environment. However, the error range of iGPS is too wide to be used in a small size robot. This paper presents a more accurate method of localizatio...

Map information is important for self localization and path planning when mobile robots accomplish autonomous tasks. We use 3D environment model containing color data and structure data of the environment. We propose a method for image memory based navigation of a mobile robot with 3D-2D edge matching by using a 3D environment model. Our proposed self localization method is composed of two phas...