To meet the challenges in today’s world of global computing, fast technologies, and increasingly old age population, the researchers have been trying to switch from traditional modes of navigation to automatically operated modes of navigation. This gives a level of independence in their daily activities inside the house without much effort. The demand for assistive navigation technologies to he...

An essential task for autonomous mobile robot is to move from places to places while avoiding obstacles and keep itself located. In a dynamically changing environment this requires the utilization of diverse sensor information. For mobile robots equipped with multiple sensors, diierent types of sensor and sensor conngurations provide competing and complementing functions for the above purposes....

We present a new fairing method for planar curves, which is particularly well suited for the regularization of the medial axis of a planar domain. It is based on the concept of total variation regularization. The original boundary (given as a closed B-spline curve or several such curves for multiply connected domains) is approximated by another curve that possesses a smaller number of curvature...

To realize humanoid robots in unknown environment, sensor based navigation system is required as one of an essential function. This paper describes visionbased navigation system for humanoid robots, which has

Reliable estimation of position and orientation of the system in the 3D-world is normally the first and absolutely necessary requirement for the functional and operational capability of any unpiloted moving system for different real time applications. A multi sensor approach for realisation of this task in combination with an optimal fusion of these measurements provides the best estimation acc...

We propose a sensor based navigation algorithm for a mobile robot that assures a convergence property when the robot is navigated from a given start position to a goal position while avoiding moving and fixed obstacles. This algorithm guides the robot toward the goal by using its sensor information in an unknown environment. Conventional sensor based navigation algorithms such as Bug algorithm ...

In this paper, we demonstrate a miniature magnetic-force-based, three-axis, AC magnetic sensor with piezoelectric/vibrational energy-harvesting functions. For magnetic sensing, the sensor employs a magnetic-mechanical-piezoelectric configuration (which uses magnetic force and torque, a compact, single, mechanical mechanism, and the piezoelectric effect) to convert x-axis and y-axis in-plane and...