Guidance system

About: Guidance system is a research topic. Over the lifetime, 4282 publications have been published within this topic receiving 45964 citations.

An Adaptive Guidance System for Robotic Walking Aids

Abstract: In the last years, several robotic walking aids to assist elderly users with mobility constraints and thus to react to the growing number of elderly persons in our society have been developed. In order to ensure good support for the user, the robotic walker should adapt to the motion of the user while at the same time not losing the target out of sight. Even though some of the existing active robotic walkers are able to guide their user to a target, during guidance, the input of the user is not considered sufficiently. Therefore a new adaptive guidance system for robotic walkers has been developed. It is able to lead the walking aid user to a given target while considering his inputs during guidance and adapting the path respectively. The guidance system has been implemented on the mobile robot assistant Care-O-bot II and a field test was done in an old people’s residence proving the correct function and usefulness of the guidance system.

Finite Time Stability Approach to Proportional Navigation Systems Analysis

Abstract: The e nite time stability of proportional navigation guidance systems is considered. Assuming planar geometry and linear missile dynamics, a proportional navigation missile ‐target guidance model is e rst formulated. The model exhibitsa feedback cone guration consisting of a lineartime-invariant element and a time-varying gain. The dee nition of e nite timeglobal absolutestability isthen presented. Itisshown that by employing thecirclecriterion, the e nite time stability of the guidance dynamics can be analyzed. An analytic bound for the time of e ight up to which stability can be assured is established. The bound depends on the system parameters and the time of e ight. Less conservative results, as compared to previous works, are obtained. This approach enables not only analysis of the system behavior for given missile dynamics, but more importantly, enables generation of a tool for system design. Illustrative examples are presented showing the effect of the system parameters on the bound. In addition, some design implications, such as the relation to miss distance, are outlined.

RFID-assisted assembly guidance system in an augmented reality environment

Abstract: RFID technology provides an invisible ‘visibility’ to the end user for tracking and monitoring any objects that have been tagged. Research on the application of RFID in assembly lines for overall production monitoring and control has been reported recently. This paper presents a novel research on implementing the RFID technology in the application of assembly guidance in an augmented reality environment. Aiming at providing just-in-time information rendering and intuitive information navigation, methodologies of applying RFID, infrared-enhanced computer vision, and inertial sensor is discussed in this paper. A prototype system is established, and two case studies are presented to validate the feasibility of the proposed system.

System for indoor guidance with mobility assistance

Abstract: An indoor guidance system for a blind or visually impaired person. The system uses a mobile device (Smartphone, tablet, etc.) to provide maps and visual and voice guidance to assist individuals in navigating through indoor locations. Special maps are transmitted to the mobile device upon entering the facility, or downloaded in advance. The software and maps provide assistance to the user, to guide them through the facility. The system uses a combination of GPS and other technologies (Bluetooth, infrared, Wi-Fi, RFID, etc.) to provide extremely detailed and accurate location information to the user.

A Comparison of Control Techniques for Robust Docking Maneuvers of an AGV

Abstract: This work addresses the path tracking problem of industrial guidance systems used by automated guided vehicles (AGVs) in load transfer operations. We focus on the control law that permits to AGVs to operate tracking a predefined route with industrial grade of accuracy, repeatability and reliability. One of the main issues of this problem is related to the important weight variation of AGVs when transporting a load, which induces slipping and skidding effects. Besides, localization error of the guidance system should be taken into account because position estimation is typically performed at a low sample rate. Other key point is that control law oscillations can knock down the load, which gives rise to safety and performance problems. Three control techniques - fuzzy, vector pursuit and flatness-based control - are compared in order to evaluate how they can deal with these problems and satisfy the robustness requirements of such an industrial application.