17 November 2008 Improving performance of task space controllers using an inner PD joint controller: an application to visual sevoing
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Proceedings Volume 7266, Optomechatronic Technologies 2008; 72661R (2008); doi: 10.1117/12.807294
Event: International Symposium on Optomechatronic Technologies, 2008, San Diego, California, United States
Abstract
This paper presents a comparative study of two task space control approaches. The first approach, similar to most of task space controllers, makes use of an inner velocity loop. The second proposed approach employs an inner proportional derivative (PD) joint position-velocity loop. A stability proof for the second apprach is provided together with experiments using a visual servoed robot. It is shown that the proposed control law needs less gain at the task space level then precluding amplification of the measurement noise; moreover, it is shown that the first approach produces uncontrolled movements when the task space sensor fails whereas the proposed controller avoids uncontrolled behavior
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R. Garrido, E. Canul, A. Soria, "Improving performance of task space controllers using an inner PD joint controller: an application to visual sevoing", Proc. SPIE 7266, Optomechatronic Technologies 2008, 72661R (17 November 2008); doi: 10.1117/12.807294; https://doi.org/10.1117/12.807294
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KEYWORDS
Visualization

Space robots

Feedback control

Interference (communication)

Control systems

Space sensors

Cameras

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