The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In order to navigate a robotic base in an unfamiliar environment, some mechanisms to detect positioning and location must be provided. When the base is in the process of navigation and makes use of these mechanisms, errors originating from the environment and base are inserted into the system, resulting in an erroneous position estimation. One relevant approach to reduce the error amplitude is to...
This work describes how fuzzy logic control FLC can be applied to sonar sensors of a Pioneer 3-DX mobile robot. The fuzzy logic approach has proved its effectiveness in the navigation of mobile robots in known and unknown environments in the different industrial areas. It provides a mechanism for combining sensor data from all sonar sensors and a position sensor which present different information...
A fault can occur any time during mobile robots operation and this may cause human injuries. To ensure the safety and the reliability of mobile robots, fault detection and identification (FDI) are necessary to be addressed. The faults in this study are defined as situations that the mobile robots collide with obstacles or the obstacle interferes mobile robot motion immediately. The objectives of this...
Intelligent Wheelchair Bed (IWB) is an important direction. And it is also one of the most active research direction in the robot field. In this work, the obstacle avoidance algorithm based on the Artificial Potential Field (APF) using ultrasonic sensors is proposed and realized in order to achieve the real-time and continuing obstacle avoidance for the IWB. The IWB can keep on detecting the environment...
A Smart Wheelchair (SW) is an electric powered wheelchair, equipped with sensors and computational capabilities, with the general aim of both enhancing independence and improving perceived quality of life of the impaired people using it. SWs belong to the class of semi-autonomous mobile robots, designed to carry the user from one location to another of his/her choice. For such systems, the localization...
Practically, today most mobile devices, such as robots require to have ability to determine their pose (location and orientation) from low-cost sensors with high accuracy. This paper presents a novel fusion method to determine the pose estimation of an autonomous mobile robot using inertial sensors and a camera. Speeded up robust features (SURF) is used as a visual algorithm to detect natural landmarks...
This paper aims at developing a sensor-based Co-Active adaptive neuro-fuzzy inference system (CANFIS) for solving navigation problems of the mobile robot in an uncertain environment. The infrared sensor reads the distances of right, front and left obstacle. The collision-free path is accomplished by CANFIS controller which selects the desired steering angle by construing the obstacle distance information...
Ultra Wide Band (UWB) is an emerging technology in the field of indoor localization, mainly due to its high performances in indoor scenarios and relatively easy deployment. However, in complex indoor environments, its positioning accuracy may drastically decrease due to biases introduced when emitters and receivers operate in Non Line-of-Sight (NLOS) conditions. This undesired phenomenon can be attenuated...
Autonomous mobile robots use vision sensors for navigation due to its ability to provide detailed information of the environment. Visual perception of an environment, is an important capability for mobile robots, so many efforts are leading the research community for such a fundamental and challenging task. An aspect to emphasize is that vision systems have to cope with uncertainty because sensors...
Reliable navigation of a low-cost mobile robot in an indoor environment can prove to be challenging as position fixing sensors, such as a GNSS receiver, are typically unavailable. Subscribing to the premise of a baseline of odometry and inertial sensors, this paper compares three navigation strategies, namely, a full 6-DOF inertial measurement unit (IMU) with kinematic constraints, a partial IMU with...
The aim of this work is to design a mobile robot using WPT (Wi-Fi Position Techniques) method. The design in this research is intended to determine the mobile robot position by using the Wi-Fi module to determine the coordinates of position as determination to reach the target position and to find the strength of the detected Wi-Fi signal. Mobile robot is using to get the results of the strength of...
This paper investigates the leader-follower tracking control problem for non-holonomic mobile robots based on fuzzy controller based approach. The trajectory tracking control for a single mobile robot is extended to the formation control for multiple mobile robots. This paper proposes for enhancement the follower performance, interval fuzzy type-2 controller is used. By taking the simulation and simple...
The design of intelligent powered wheelchairs has traditionally focused heavily on providing effective and efficient navigation assistance. Significantly less attention has been given to the end-user's preference between different assistance paradigms. It is possible to include these subjective evaluations in the design process, for example by soliciting feedback in post-experiment questionnaires...
The quest for an improvement in the quality of life of human beings directs the idea of integrating different areas of knowledge to solve problems that it is impossible to solve using traditional methods. The presented idea applies to the development of autonomous robotic systems; such as cars, wheelchairs, boats, and airplanes. In those cases, given a high level of autonomy can bring countless benefits...
Autonomous navigation has been an important task in recent years to keep track of vehicles location, to provide safety and accuracy on its trajectory and to see their surroundings and predict if it is possible to travel across them. In this paper, a method to improve accuracy on laser vision systems based on dynamic triangulation for mobile robots is proposed. This laser vision system consists on...
Human Robot interaction (HRI) is the study of interaction between humans and robots. Such interaction can be difficult when untrained people use robots. This work is mainly focus on untrained users in the developing world, i.e. people with less exposure to technology, and less familiarity with interaction methods. This paper reports on work to develop a prototype for gesture based communication between...
We all are very much aware of IoT that is Internet of Things which is emerging technology in today's world. The new and advanced field of technology and inventions make use of IoT for better facility. The Internet of Things (IoT) is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers and the ability to transfer...
This paper deals with the interaction forces between robotic foot and the soft terrain, in conjunction with the Terzaghi theory. To date, some basic assumptions and conclusions for Terzaghi theory are analyzed. Terzaghi is recognized as a popular option to predict the bearing capacity of the terrain with upper structures. In this paper, static models in Terzaghi theory and its extended versions are...
In the real world, sensors are always exposes to noise and error during measurements. These problems will lead to invalid and overshoot readings, as well as blank data. Fortunately, these errors can be treated using filters. For data collection process using laser range finder, the use of filters is necessary as they can help to overcome the laser limitations and improve the scanning input. Here,...
Autonomous systems able to react and change their behaviour in response to events during operation. These established abilities are based on the preprogrammed action or actions to be taken when encounter certain states in the deployed environment. Therefore prior to deployment, a knowledge expert with comprehensive understanding of the physical system and the deployed environment must specify anticipated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.