Abstract: A method and an apparatus for processing a web of a flexible material, in particular paper, moved along a direction of motion of the material, in which individual sections are produced from the material web by a first double-carriage linear motor and a second double-carriage linear motor, which are arranged parallel to the direction of motion of the material and each have a first carriage and a second carriage in the direction of motion of the material. Each of the carriages has a driving element.

Abstract: Electromagnetic state variables of an electromagnetic machine are represented by space vectors. A setpoint value for the vector of a manipulated voltage at the stator is preset and an actual value of the vector of the current at the stator is measured. A vector of an induced voltage is determined from the setpoint value and the actual value of the vector of the current. A value of a vector of the magnetic flux is estimated from a preset correction voltage and the induced voltage. A phase angle and a rotating field frequency are estimated from the vector of the magnetic flux. A factor is multiplied into the vector of the correction voltage when a torque-forming component of a current at the stator has an opposite mathematical sign to the estimated value of the rotating field frequency.

Abstract: An electromotive drive system having an electronics housing on the motor side and having, detachably plugged thereinto, a connection housing for connecting and contacting connection wires in particular direct current supply wires, of at least two connection cables.

Abstract: A method for calibrating a rotary encoder, in particular an incremental encoder, of an electrical machine, wherein the encoder has a number of reference marks and outputs a sine track and a cosine track. The electrical machine can be regulated to a specific speed, an angle of the electrical machine is determined with the aid of the sine track and/or the cosine track, from this an angular progression over time is ascertained, an oscillation in the angular progression over time with a frequency of substantially one integral multiple of the product of the specific speed and the number of reference marks is ascertained, and from this a correction factor the sine track and/or the cosine track is derived, wherein the amplitude of the oscillation is less than or equal to a limiting value. The invention further relates to an encoder evaluation and an electric motor having a rotary encoder.

Abstract: An electric machine has in a machine housing, a stator and a rotor which is arranged on a motor shaft which is supported on a non-drive side in a bearing unit which has a ball bearing arrangement and is arranged within the machine housing in a radially elastic and axially displaceable manner. The electric machine is preferably coupled on the drive side without a bearing via a rigid shaft coupling to a work machine, in particular to a hydraulic pump.

Abstract: An automated system and method that includes at least two cooperating electrical components, each having a time counter. The electrical components being coupled to one another via signals for cyclically transmitting process data via a signal network, and are synchronized with one another based on global, relative time information as a reference quantity.

Abstract: A method for calibrating a rotary encoder, in particular an incremental encoder, of an electrical machine, wherein the encoder has a number of reference marks and outputs a sine track and a cosine track. The electrical machine can be regulated to a specific speed, an angle of the electrical machine is determined with the aid of the sine track and/or the cosine track, from this an angular progression over time is ascertained, an oscillation in the angular progression over time with a frequency of substantially one integral multiple of the product of the specific speed and the number of reference marks is ascertained, and from this a correction factor the sine track and/or the cosine track is derived, wherein the amplitude of the oscillation is less than or equal to a limiting value. The invention further relates to an encoder evaluation and an electric motor having a rotary encoder.

Abstract: An electrical machine includes a coolable stator having an annular laminated stator core formed of a number of stator laminations having stator teeth which point radially inwards and form stator slots therebetween for accommodating a field winding wound onto the stator teeth. The laminated stator core has peripheral passage openings aligned with one another and forming cooling ducts.

Abstract: A circuit board assembly with a printed circuit board, which has an SMD mounting location for attaching a first integrated circuit having an electrical circuit. A replacement circuit board having the electrical circuit is soldered at the SMD mounting location using SMD technology.

Abstract: An automated system and method that includes at least two cooperating electrical components, each having a time counter. The electrical components being coupled to one another via signals for cyclically transmitting process data via a signal network, and are synchronized with one another based on global, relative time information as a reference quantity.

Abstract: An electric machine, in particular an electric motor, has a one-piece can disposed between a stator and a rotor. The can has a tubular casing, which is loaded with external pressure by a coolant in a machine housing and which is made of fiber composite material. The casing thickness of the can lies between 2.5 mm and 0.5 mm. The can is axially fitted onto a sleeve and the sleeve is mounted to a collar of an end plate of the machine housing. The sleeve has a first axial section projecting into the can and a second axial section aligned with the can.

Abstract: An apparatus and a method actuate a frequency converter of an electric machine having a safety function, in particular a safe-torque-off (STO) function. Wherein, by a preferably clocked converter circuit, an electrically isolated output voltage is generated from an input voltage, from which output voltage a control signal is generated for the frequency converter for the operation thereof in accordance with standards and for triggering the safety function. An actuation signal is generated for a semiconductor switch which is periodically connected to the input voltage, and the output voltage is limited when the output voltage exceeds a switching threshold.

Abstract: An electric machine with a machine housing for accommodating a stator and a rotor with stator and/or rotor windings, which are connected to connecting lines for producing an electrical contact connection. An isolating plate, which covers a line channel for accommodating the connecting lines, has a number of insulating bushes, into which connecting pins are inserted which can be brought into contact with the connecting lines. In this case, the connecting pins with respect to the insulating bushes and preferably the insulating bushes are inserted into the isolating plate in position-coded or angle-coded fashion with respect to the isolating plate.

Abstract: A method and an apparatus for processing a web of a flexible material, in particular paper, moved along a direction of motion of the material, in which individual sections are produced from the material web by a first double-carriage linear motor and a second double-carriage linear motor, which are arranged parallel to the direction of motion of the material and each have a first carriage and a second carriage in the direction of motion of the material. Each of the carriages has a driving element.

Abstract: A cooled stator for an electric machine including a rotating rotor wherein the stator comprises an electric sheet metal stack and one or more flexible, deformable cooling channels for guiding the flowing cooling medium in a liquid or gas form, reacting with the stacks. The one or more cooling channels being formed from one or more flexible corrugated hoses made of metal.