Abstract: The hub cap system for a vehicle, in particular a commercial vehicle, includes a hub cap configured to rotate about an axial direction, wherein the hub cap has a central aperture which extends in the axial direction, and an air guiding system including a primary connection and a secondary connection, wherein the air guiding system extends partially into or through the central aperture.

Abstract: A method for operating a machine tool and/or production machine comprising comparing at least one target position, speed, and/or acceleration value of a machine shaft and/or of a tool center point with an actual position, speed, and/or acceleration value. At least one actual quality value is formed on the basis of the comparison or comparisons. A target quality value is compared with the actual quality value. A feed speed and/or acceleration and/or jerk of the machine shaft and/or of the tool center point is reduced if a defined deviation of the actual quality value from the target quality value is exceeded, or storing information that the defined deviation of the actual quality value from the target quality value has been exceeded if the defined deviation of the actual quality value from the quality target value is exceeded.

Abstract: A tire inflation system, in particular for use in a commercial vehicle includes a control unit, a flow inlet, a pressure sensor, a switchable valve, in particular an electrically or magnetically switchable valve, and a flow outlet, wherein the flow inlet is configured to be connected to a compressed air system, in particular to a compressed air system of an air spring, wherein the flow outlet is configured be connected to a pressure chamber of a tire, wherein the control unit is connected to the pressure sensor and the switchable valve, wherein the pressure sensor is configured to detect a pressure at the flow outlet or at the flow inlet, wherein the control unit is configured such that the control unit opens and/or switches the switchable valve as a function of the detected pressure, in particular when the detected pressure at the flow outlet falls below a threshold value.

Abstract: A machine tool includes a machine control unit to output control signals to drives for machine elements. A tool which machines a workpiece is thereby moved relative to the workpiece in a position-controlled manner. Arranged in a first region of one machine element is an active vibration damper to damp vibration in a second region of the machine elements as the workpiece is machined by the tool. In order to detect the vibration, a first sensor is arranged in the first region of the machine element and a second sensor is arranged on another machine element or in a different region of the one machine element. Actual values detected by the first and second sensors and corresponding target values are supplied to a dual controller which determines on the basis of these values, a resulting manipulated variable for the active vibration damper and actuates the active vibration damper accordingly.

Abstract: A sealing ring includes a retaining region, a primary sealing lip and a secondary sealing lip, wherein the retaining region is formed circumferentially about an axial direction, wherein a radial direction extends radially and perpendicularly away from the axial direction, and wherein the primary sealing lip and the secondary sealing lip have an extension in the radial direction, in particular in the positive radial direction.

Abstract: Compensation parameters are determined and define a compensation signal intended to compensate for a disturbance that occurs during operation of a control target. The control target is controlled during operation by a servo drive control device designed to generate the compensation signal based on the compensation parameters when the disturbance occurs in order to reduce a subsequent fault that can be attributed to the disturbance. A first test parameter set is provided. The servo drive control device performs an operating process in which the disturbance occurs. The servo drive control device generates a first test compensation signal based on the first test parameter set when performing the operating process and receives a first measurement signal as feedback. A first error signal is determined from the first measurement signal. The compensation parameters are determined by a substitution model that maps error signals to compensation signals and uses the first error signal.

Abstract: A machine tool includes a machine element, an active vibration damper arranged on a region of the machine tool for damping a vibration of the machine element, and a vibration sensor facility arranged to detect the vibration of the machine element at a first point and at a second point of the machine tool, with the vibration of the machine element to be detected being smaller at the second point than at the first point. The active vibration damper is designed to damp the vibration of the machine element as a function of a variation between a first actual value detected by the vibration sensor facility at the first point and a second actual value detected by the vibration sensor facility at the second point.

Abstract: A machine tool includes a machine element and a vibration damper arranged on the machine element to damp a vibration mode that occurs during operation of the machine tool and is manifested at a tool center point of the machine tool and at a point of the machine element. The vibration damper is arranged on the point of the machine element, with the vibration mode having a vibration antinode at the point.

Abstract: A control facility for a DC link converter includes a power regulator, which determines, based on an actual power determined at least partially at the feed converter, a power-based desired moment component for a kinetic energy store. The invention also relates to a DC link converter controlled by the control facility and to a forming machine, such as a press, with a DC link converter controlled by the control facility.

Abstract: A digital web printing press, control apparatus and method for operating the digital web printing press includes selecting a frequency for actuating a digital printing head at the frequency to output printing ink onto a print web, wherein a specified conveying speed for conveying the print web is ascertained based on the selected frequency and printing data, a motor driving a first roller and/or a motor driving a second roller is controlled based on the specified conveying speed such that the print web between the first roller and the second roller is conveyed at the specified conveying speed and the digital printing head at the selected frequency and activated based on the printing data such that the digital printing head is advantageously actuated at a selected, fixed frequency, and such that complex dynamic actuation of the digital printing head and an associated measurement and control system are eliminated.

Abstract: A machine tool includes a machine control unit to output control signals to drives for machine elements. A tool which machines a workpiece is thereby moved relative to the workpiece in a position-controlled manner. Arranged in a first region of one machine element is an active vibration damper to damp vibration in a second region of the machine elements as the workpiece is machined by the tool. In order to detect the vibration, a first sensor is arranged in the first region of the machine element and a second sensor is arranged on another machine element or in a different region of the one machine element. Actual values detected by the first and second sensors and corresponding target values are supplied to a dual controller which determines on the basis of these values, a resulting manipulated variable for the active vibration damper and actuates the active vibration damper accordingly.

Abstract: An actuator of a machine is controlled by a control device with a controller structure in a normal operating mode and a special operating mode. The control device determines from a position setpoint value and a position actual value a control signal for the actuator. In the normal operating mode, the setpoint values are determined using a utility program, and in the special operating mode by a system program that is different from the normal operating program. In the special operating mode, a frequency characteristic for the actuator is determined on the basis of the sequence of setpoint values and associated actual values, and an evaluation for the actuator and/or of the controller structure is performed using the frequency characteristic and parameters of the controller structure. Depending on the evaluation, a message is transmitted to an operator of the machine or to a computing device over a network.

Abstract: A machine tool includes a first machine element movable in a travel direction and having first and second side faces. The first and second side faces of the first machine element run parallel to the travel direction and are oriented at a right angle to each other. The first machine element is moved in the travel direction in a guideway of a second machine element by a drive unit in a positionally controlled manner. The machine tool further includes first and second vibration dampers which are oriented at a right angle to the travel direction and configured to dampen vibrations of the first machine element in respective vibration directions. At least one of the first and second vibration dampers is oriented to solely dampen a vibration in a vibration direction that is neither parallel to the first side face nor parallel to the second side face.

Abstract: In a method for guiding a cutting head in relation to a material, a position and a speed of the cutting head are set by means of a drive unit depending on a desired position value and a desired speed value established by an interpolator unit, a control signal for the drive unit is determined, a distance between the cutting head and the material is determined with a distance sensor, and a corresponding distance signal is provided. The distance signal is compared with a predetermined comparison distance to yield a distance-control signal, and the control signal for the drive unit is additionally determined dependent upon a distance-control signal. The comparison distance is subtracted from the distance signal and the difference is superimposed on the actual position signal, which is delayed by a first time period, wherefrom the distance-control signal is determined.

Abstract: An analysis unit and method for determining at least one forming process characteristic of a servo press includes the steps of determining a torque profile of a motor of the servo press, wherein the torque profile belongs to a first cycle of the servo press and wherein the first cycle describes a forming process without an item to be processed by the servo press, determining a torque profile of the motor of the servo press, wherein the torque profile belongs to a second cycle of the servo press and wherein the second cycle describes a forming process with an item to be processed by the servo press, and comparing the torque profile belonging to the first cycle with the torque profile belonging to the second cycle to ascertain the at least one forming process characteristic.

Abstract: A machine tool includes a machine element, an active vibration damper arranged on a region of the machine tool for damping a vibration of the machine element, and a vibration sensor facility arranged to detect the vibration of the machine element at a first point and at a second point of the machine tool, with the vibration of the machine element to be detected being smaller at the second point than at the first point. The active vibration damper is designed to damp the vibration of the machine element as a function of a variation between a first actual value detected by the vibration sensor facility at the first point and a second actual value detected by the vibration sensor facility at the second point.

Abstract: A control device of a machine tool includes a position controller and a model of a position-controlled axis. The position controller receives a position setpoint value, a corresponding actual position value and a compensation value; determines therefrom a resulting value; determines based on the resulting value an actuating signal; and outputs the actuating signal to the position-controlled axis. The position and/or the orientation of the tool relative to the workpiece are adjusted based on the actuating signal. A sequence of successive control errors is stored, in a storage device and read out sequentially in accordance with a sequence of the position setpoint values and supplied to the model. The model determines from the read-out control error a respective compensation value which is then supplied to the position controller, while simulating the mechanically dynamic behavior of the position-controlled axis.

Abstract: In a method for guiding a cutting head in relation to a material, a position and a speed of the cutting head are set by means of a drive unit depending on a desired position value and a desired speed value established by an interpolator unit, a control signal for the drive unit is determined, a distance between the cutting head and the material is determined with a distance sensor, and a corresponding distance signal is provided. The distance signal is compared with a predetermined comparison distance to yield a distance-control signal, and the control signal for the drive unit is additionally determined dependent upon a distance-control signal. The comparison distance is subtracted from the distance signal and the difference is superimposed on the actual position signal, which is delayed by a first time period, wherefrom the distance-control signal is determined.

Abstract: A control facility for a DC link converter includes a power regulator, which determines, based on an actual power determined at least partially at the feed converter, a power-based desired moment component for a kinetic energy store. The invention also relates to a DC link converter controlled by the control facility and to a forming machine, such as a press, with a DC link converter controlled by the control facility.

Abstract: A method and a device operating according to the method automatically generate a control program designed for diagnostic purposes of a production machine or machine tool. The control program is generated using freely selectable parameters and/or machine-specific parameters by an algorithm which defines a movement profile. The movement profile incorporates at least one test run for at least one axis of the respective production machine or machine tool, wherein the at least one test run produces an axis excitation which is suitable for determining at least one mechatronic characteristic variable of the respective axis.