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Guidance system

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


Papers
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Patent
09 Mar 1998
TL;DR: In this article, a guidance system for guiding an automated guided vehicle along a pathway is disclosed which includes rails for holding the AGV to the generally straight portions of the pathway and a non-rail guidance system that can direct the vehicle from the end of a first rail segment to the beginning of another.
Abstract: A guidance system for guiding an automated guided vehicle along a pathway is disclosed which includes rails for holding the AGV to the generally straight portions of the pathway and a non-rail guidance system for directing the AGV from the end of a first rail segment to the beginning of another. The rails provide the necessary level of control to allow an unmanned vehicle to move at high speeds while the non-rail guidance system eliminates the need for the rail switches that would otherwise be needed to shift a rail guided vehicle from one rail portion to another.

43 citations

Journal ArticleDOI
TL;DR: In this paper, a constrained guidance system that works in conjunction with the inner-loop fault-tolerant controller is proposed to smooth the transition between two consecutive navigation legs defined by waypoints.
Abstract: This work presents a novel method of fault-tolerant model predictive control where the response of a reference closed-loop model is followed even in the presence of an actuator fault. This architecture is capable of redistributing the control efforts among healthy actuators in a stable manner, respecting their limitations. Also, a constrained guidance system that works in conjunction with the inner-loop fault-tolerant controller is proposed. The guidance law considers the calculated limitations of the inner-loop control system as input constraints in order to smooth the transition between two consecutive navigation legs defined by waypoints. A trajectory-tracking system composed of the constrained guidance and the fault-tolerant model predictive controller is demonstrated through numerical simulations and experimental results on an experimental midsize transport aircraft, showing adequate performance.

43 citations

Proceedings ArticleDOI
21 May 2001
TL;DR: The guidance system operates with an environment model, communicates with mobile robots and indicates their target positions by means of a light projection from a laser pointer onto the ground, corresponding to a desired route for a specified mobile robot in the fleet.
Abstract: This paper describes our research work towards the development of an optical guidance system for multiple mobile robots in an indoor environment. The guidance system operates with an environment model, communicates with mobile robots and indicates their target positions by means of a light projection from a laser pointer onto the ground. Processing the image data from a CCD color camera mounted on the mobile robot allows it to detect the laser light beacon on the ground and estimate its relative coordinates. The robot's control system ensures the accurate motion of the robot to the indicated target position. The guidance system subsequently indicates target positions corresponding to a desired route for a specified mobile robot in the fleet. The concept of the optical guidance system, its implementation and experimental results obtained are discussed.

43 citations

Proceedings ArticleDOI
12 Sep 1994
TL;DR: The results show that with careful and detailed modelling of error sources, low cost inertial devices can provide valuable orientation and position information particularly for outdoor mobile robot applications.
Abstract: An error model for a solid-state gyroscope developed previously by the authors is included in a Kalman filter for improving the orientation estimate of a mobile robot. Orientation measurement with the error model is compared to the performance when no error model is incorporated in the system. The results demonstrate that without error compensation, the error in localization is between 5-15/spl deg//min but can be improved by a factor of 5 to 7 if an adequate error model is supplied. Results from tests of this gyroscope on a large outdoor mobile robot system are described and compared to the results obtained from the robot's own radar-based guidance system. Like all inertial systems, the platform requires additional information from some absolute position sensing mechanism to overcome long-term drift. However, the results show that with careful and detailed modelling of error sources, low cost inertial devices can provide valuable orientation and position information particularly for outdoor mobile robot applications. >

42 citations

Patent
22 May 2008
TL;DR: In this paper, a guidance system for an agriculture platform that is capable of making decisions concerning the platforms direction and velocity regarding the pathway the platform is moving along as well as obstacles in the path of the platform, is provided.
Abstract: A guidance system for an agriculture platform that is capable of making decisions concerning the platforms direction and velocity regarding the pathway the platform is moving along as well as obstacles in the path of the platform, is provided The autonomous agricultural platform guidance system and method will make it possible for small scale farming to take up automated mechanical farming practices which are currently only practical for large scale farming thus improving land utilization efficiency while lowering manpower costs dramatically

42 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202319
202252
202197
2020141
2019194
2018206