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- W1567280735 abstract "Abstract : One of the most difficult theoretical problems in robotics--motion planning for rigid body robots-- must be solved before a robot can perform real-world tasks such as mine searching and processing. This dissertation proposes a new motion planning algorithm for an autonomous robot, as well as the method and results of implementing this algorithm on a real vehicle. This dissertation addresses the problem of safely navigating an autonomous vehicle through free space of a two dimensional, world model with polygonal obstacles from a start configuration (position orientation) to a goal configuration using smooth motion under the structure of a layered motion planning approach. The approach proposes several new concepts, including v-edges and directed v-edges, and divides the motion planning problem of a rigid body vehicle into two subproblems: (1) finding a global path using Voronoi diagrams and for a given start and goal configurations planning an optimal global path; the planned path is a sequence of directed v-edges, (2) planning a local motion from the start configuration, using the aforementioned global path. The problem of how to design a safe and smooth path, is effectively solved by the steering function method and proximity. Another problem addressed here is how to make a smooth transition when the vehicle gets closer to an intersection of two distinct boundaries. This dissertation also presents a robust algorithm for the vehicle to continually eliminate its positional uncertainty while executing missions. This functionality is called self-localization which is an essential component of model-based navigation for indoor applications. This algorithm is based on the two-dimensional transformation group. Through this method, the robot can minimize its positional uncertainty, make safe and reliable motions, and perform useful tasks in a partially known world." @default.
- W1567280735 created "2016-06-24" @default.
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- W1567280735 date "1996-09-01" @default.
- W1567280735 modified "2023-09-27" @default.
- W1567280735 title "New motion planning and real-time localization methods using proximity for autonomous mobile robots" @default.
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