Kniha Perturbation Techniques for Flexible Manipulators Anthony R. Fraser

Perturbation Techniques for Flexible Manipulators

Jazyk: Angličtina
Vazba: Pevná
Vydavatel: Springer
Dostupnost: Skladem u dodavatele v malém množství
Odesíláme za 13-18 dnů
3 938
A manipulator, or 'robot', consists of a series of bodies (links) connected by joints to form a spat...

Informace o knize

Jazyk
Angličtina
Vazba
Kniha - Pevná
Vydáno
1991
Stránek
275
EAN
9780792391623
ISBN
0792391624
Enbook ID
01398075
Vydavatel
Hmotnost
598
Rozměry
242 x 165 x 21

Kompletní popis

A manipulator, or 'robot', consists of a series of bodies (links) connected by joints to form a spatial mechanism. Usually the links are connected serially to form an open chain. The joints are either revolute (rotary) or prismatic (telescopic), various combinations of the two giving a wide va riety of possible configurations. Motive power is provided by pneumatic, hydraulic or electrical actuation of the joints. The robot arm is distinguished from other active spatial mechanisms by its reprogrammability. Therefore, the controller is integral to any de scription of the arm. In contrast with many other controlled processes (e. g. batch reactors), it is possible to model the dynamics of a ma nipulator very accurately. Unfortunately, for practical arm designs, the resulting models are complex and a considerable amount of research ef fort has gone into improving their numerical efficiency with a view to real time solution [32,41,51,61,77,87,91]. In recent years, improvements in electric motor technology coupled with new designs, such as direct-drive arms, have led to a rapid increase in the speed and load-carrying capabilities of manipulators. However, this has meant that the flexibility of the nominally rigid links has become increasingly significant. Present generation manipulators are limited to a load-carrying capacity of typically 5-10% of their own weight by the requirement of rigidity. For example, the Cincinatti-Milicron T3R3 robot weighs more than 1800 kg but has a maximum payload capacity of 23 kg.

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