Betaetigungsvorrichtung

DE 102009018169 A1 UPAB: 20101112 NOVELTY - The device (1) has a hollow, elastically bending contraction element (4) extended between end pieces (2, 3), where interior (7) of the contraction element is pressurized with a fluidic pressure medium. A measuring arrangement and a spring-loaded rope are arranged in the interior. The rope is looped around a cylindrical permanent magnet (13). Arrangement of the magnet and the rope is fixed in an area of the pieces. A Hall sensor (18) is arranged in the interior for detecting rotation of the magnet occurred during contraction of the contraction element. The device is formed as a fluidic muscle. USE - Actuating device for producing a linear movement. ADVANTAGE - The elastically bending contraction element is extended between the spaced apart end pieces, where the interior of the contraction element is pressurized with the fluidic pressure medium for deformation, so that length change of the contraction element caused due to contraction can be metrologically detected in a simple and space-saving manner. The device ensures that a measuring device is not externally visible and is fully protected in the device, so that the device can be used in harsh environments. The device avoids leakage losses. The device allows a measurement system to generate a measurement signal that is independent of initial length of the contraction element, and allows the measuring device to be used for dynamic applications.