Concept
Linkage (mechanical)
Concepts associés (14)
Burmester's theory
In kinematics, Burmester theory comprises geometric techniques for synthesis of linkages. It was introduced in the late 19th century by Ludwig Burmester (1840–1927). His approach was to compute the geometric constraints of the linkage directly from the inventor's desired movement for a floating link. From this point of view a four-bar linkage is a floating link that has two points constrained to lie on two circles.
Automate
vignette|Karakuri serveur de thé, avec mécanisme, . musée national de la nature et des sciences de Tokyo. Un automate est un dispositif reproduisant en autonomie une séquence d'actions prédéterminées sans l'intervention humaine, le système fait toujours la même chose. L'automate est un objet programmé. En automatisme le terme est réservé aux dispositifs électromécaniques pilotant le système. Il commande le registre des sorties (commande des actionneurs) en fonction du registre des entrées (états des signaux envoyés par les capteurs) et de l'étape du programme en cours.
Five-bar linkage
In kinematics, a five-bar linkage is a mechanism with two degrees of freedom that is constructed from five links that are connected together in a closed chain. All links are connected to each other by five joints in series forming a loop. One of the links is the ground or base. This configuration is also called a pantograph, however, it is not to be confused with the parallelogram-copying linkage pantograph. The linkage can be a one-degree-of-freedom mechanism if two gears are attached to two links and are meshed together, forming a geared five-bar mechanism.
Kinematic diagram
In mechanical engineering, a kinematic diagram or kinematic scheme (also called a joint map or skeleton diagram) illustrates the connectivity of links and joints of a mechanism or machine rather than the dimensions or shape of the parts. Often links are presented as geometric objects, such as lines, triangles or squares, that support schematic versions of the joints of the mechanism or machine. For example, the figures show the kinematic diagrams (i) of the slider-crank that forms a piston and crank-shaft in an engine, and (ii) of the first three joints for a PUMA manipulator.