Siemens Aktiengesellschaft

Robert Boschgmbh

Audi Ag

Michael Kilger

Udo Sieber

Alex Grossmann

Thomas Burkhardt

Reiner Schweinfurth

Simon Dierolf

J&uuml;rgen Bastian

Ingo Immdendoerfer

Torsten Aign

A method is proposed for adjusting an actuator () of a positioning system (). The positioning system () has an electronically commutated actuator drive () which is coupled to the actuator (), wherein the actuator drive () has a permanent magnetic rotor (), wherein the rotor () has a first shaft () which extends along a pole axis () of the rotor (). The actuator drive () additionally has an electronically commutated stator (), wherein the stator () can be energized using a space phasor (), wherein the space phasor () has an electric phase and an amplitude, wherein the space phasor () is aligned with respect to the first shaft () of the rotor () around a difference phasing. In order to be able to actuate a predefined position of the actuator, even without sensors to determine the position of the first shaft () of the rotor (), the following steps of the method are thereby provided: setting the difference phasing of the space phasor () to an operating difference phasing; setting the amplitude to an operating amplitude, wherein the operating difference phasing and the operating amplitude are set in such a way that the operating difference phasing is less than 45&#xb0; and that a torque is generated at the rotor () suitable for starting up the predefined position of the actuator (). The invention further relates to a device for adjusting an actuator () of a positioning system () and a computer program product which contains a program code which, when it is executed by a data processing unit, implements the method according to the invention.

Method and device for adjusting an actuator member of a positioning system with an electronically commutated actuator drive

A method for adjusting coolant temperature in an internal combustion engine (), whereby the coolant circuit thereof contains an electrically driven coolant pump () and an electrically controllable bypass valve (). If the setpoint value of the coolant temperature changes in an abrupt manner, the rotating speed of the coolant pump () rises during the short interval in order to reduce the dead time required for adjustment. A Smith controller, which takes into account dead times of the system, is used to regulate the bypass valve.

Method for adjusting coolant temperature in an internal combustion engine

An actuator has an actuating element and an actuating drive with an electromagnet with a coil. An armature, which can be coupled to the actuating element, can move between a first contact surface on the electromagnet and a second contact surface. An initial current or a higher holding current flows through the coil until a time at which the armature plate is reliably in contact with the contact surface of the electromagnet. An operating state of high-speed current reduction is then selected, wherein the opposite polarity of the supply voltage in comparison to the initial current flow is applied to the coil. A holding current then flows through the coil.

Method of controlling an actuator

Method for detecting and separating the shadow of moving objects in a

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Abensberg, Germany

Michael Kilger