Abstract: A module system and to a method for exchanging information and/or power between modules of a module system and to a corresponding computer program product. Thus a particularly simple and verifiable linking of individual modules of a modular system can be carried out, wherein the linking is possible at any time and in particular without structural changes to positions or mechanical couplings of the modules combined with one another.

Abstract: The seat cushion of a seat can be tilted about its longitudinal center axis for generating a tilting movement of the pelvis of a seat occupant. For generating the tilting movement, an adjusting element is provided in each of the right and the left area of the seat cushion. The adjusting elements interact to cause an opposite adjusting movement in the vertical direction, whereby the tilting movement of the pelvis is achieved. The adjusting elements are constructed, for example, as liquid-filled rolling bellows, in which case a sliding vane rotary pump changes the volume of the two adjusting elements in a diametrically opposed manner.