Witech Gmbh

Dspace Digital Signal Processing and Control Engineering Gmbh

Marco Schmidt

Maik-Julian Büker

Jörg Rainer Euskirchen

Ralf Grosse Boerger

Ralf Große Börger

The invention relates to a method of inductive current transmission via at least one transmission coil subjected with electrical power by an amplifier, wherein the amplifier is operated in a zero voltage switching (ZVC) and zero current switching (ZCV) mode.

Method for inductive current transmission

A method of inductive power transmission by a transmitter and a receiver of an electrically operated device, the transmitter having at least one transmitter coil and the receiver having at least one receiver coil, a control for the power to be transmitted is provided in the transmitter, a minimum power is transmitted by the transmitter through the control at the start of a power transmission, the minimum transferring power is sufficiently dimensioned to activate a controller of the receiver of the electrically operated device. By influencing the field of the transmitter coil, the controller supplies data packets to the control that contain information about the electrically operated device so that an optimal power adapted to the power class of the device is transmitted by the transmitter.

Inductive power transmission method

A method for providing a timestamp in a real-time system, whereby the real-time system has an FPGA and a CPU, which cooperate with one another, and at least one register, which contains a system time, is implemented in the FPGA. The method includes the steps of providing a CPU counter for the system time, which is driven by a clock signal of the CPU, providing a synchronization counter in the CPU, whereby the synchronization counter is driven by a clock signal of the CPU, reading of the counter for providing the system time by a real-time application, querying the synchronization counter in the real-time application, and synchronizing the counter with the system time in the real-time application, when the synchronization counter outputs a value that corresponds to more than a predefined time period since the last synchronization of the CPU counter with the system time.

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Paderborn, Germany

Marco Schmidt