Abstract: The miniaturization of electrodynamic converters causes and over-proportional reduction in power conversion density. The particular functional arrangement of the elements inside the power converter makes it possible to involve nearly the entire volume in the power conversion process. Flux concentration and multiple functions of different components permit and increase in the power conversion density in comparison to conventional miniaturizable converters. By rotating the toothed element wheel (9), an alternating magnetic flux from the permanent magnet elements (14) of the alternating axially polarized magnet ring (13) is conducted through the holed pin (1) via different magnet flux elements (21). Axially/radially oriented magnetic circuits (19) surround a flat coil (11) resting on the holed pin (1) and exert an induction action there.

Abstract: The invention relates to a system for unidrectional or bi-directional signal transmission between at least two elements (E1, E2), which constitute components of an electric power supply and signal transmission system (EVS) of vehicles. According to the invention, one of the elements (E1) is connected to at least one Bluetooth radio module (B1) and one of the other elements (B2) is connected to at least one Bluetooth radio module (B2). The unidirectional or bi-directional signal transmission between the elements (E1) and (E2) and to the Bluetooth radio modules (B1, B2) takes place via an electric cable, but is wireless between the Bluetooth radio modules (B1, B2). Several elements (E1, E2) that are connected to Bluetooth radio modules (B1, B2) can be combined to form a Bluetooth pico-network. The Bluetooth radio modules (B1, B2) permit bi-directional signal transmission. A maximum of eight Bluetooth radio modules (B1, B2) can transmit signals to each other in a Bluetooth pico-network.

Abstract: In a control system, especially a hydraulic screw-down control system for a roll stand, the controller output is acted upon by a pilot control value (v.sub.1.sup.*). At the same time, a reference value (x.sub.M ') is delivered to the controller via a subtractor as a setpoint value. The reference value (x.sub.m ') is determined in a model control loop based on the pilot controller. Parasitic response characteristics of the overall system are largely accounted for in the model control loop, so that on a time-averaged basis the controller is not activated.