Siemens Aktiengesellschaft

Eos Gmbh Optical Systems

Ulli Christian Sagmeister

Markus Teiner

Hans-J&uuml;rgen Reichl

Wolf-Dieter P&ouml;hmerer

Michael Haimerl

Hans Perret

Berhard-Franz Graf

A sensor device having an incremental encoder and a measuring sensor generating a measuring signal is assigned to two control devices. A synchronization device generates a synchronization signal. A conditioned first measuring signal is generated in the first control device as a function of the measuring signal. A conditioned second measuring signal is generated in the second control device as a function of the measuring signal. The value of the conditioned first measuring signal at a predefined time after the reception of the synchronization signal in the first control device is transmitted to the second control device. The second control device synchronizes the conditioned second measuring signal as a function of the values of the conditioned first and second measuring signals that the signals have at the predefined time after the respective reception of the synchronization signal in the first and second control devices.

Method for synchronizing at least two control devices

An apparatus for delivering powder onto a plane surface ( ) of a device for creating a three-dimensional part in a layer-by-layer fashion, in particular of a laser sintering machine, is provided. It comprises a covering means ( ) which can be moved back and forth in a second direction perpendicular to said first direction by means of a drive between a lateral first position and a second position located on the opposite side. In at least one of the positions it can be filled with powder. In order to simplify the apparatus and improve its operation, the covering means ( ) comprises a slit ( ) extending across the entire width and open at its top and its bottom as well as smoothening elements ( ) at the ends opposite of the surface. A store container ( ) is provided above the covering means ( ), the volume of said store container at each location across the entire width being at least equal to the volume of the slit cavity located underneath.

Device for supplying powder for a device for producing a three-dimensional object layer by layer

A control device for an internal combustion engine has a device for generating control commands for controlling final control elements in accordance with at least one measured value. The control device also has a communications interface for exchanging messages with a control unit for final control elements. A counter is also provided, the status of the counter being dependent on pulses of a measuring signal of an incremental crankshaft angle sensor. The control commands contain desired counter statuses for carrying out the control task. A control unit also has a counter whose counter status depends on the pulses of the measuring signal of the incremental crankshaft angle sensor. Also provided is a device for carrying out the control tasks in accordance with the counter status and the desired counter status.

Control device for final control elements of an internal combustion engine, control unit for actuator drives of an internal combustion engine and a method for controlling an internal combustion engine

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Postmünster, Germany

Ulli Christian Sagmeister