Abstract: A motor vehicle stores a first one-way hash of a password and an encrypted value from a second one-way hash of the password. A method for authenticating a device with respect to the vehicle includes the following: a PACE procedure is carried out so that the device and the motor vehicle determine the same session key; the motor vehicle generates a communication key on the basis of the session key and the encrypted one-way hash; and the device generates the communication key based on the session key and the second one-way hash.

Abstract: A method for controlling at least one servomotor in a braking manner with a frequency converter includes disconnecting a direct-voltage intermediate circuit from an electric alternating-voltage network, braking the servomotor by controlling semiconductor switches of an inverter circuit in a regenerative braking mode in order to reduce the speed of the servomotor, and controlling a brake chopper such that a brake resistor is switched on at a maximum intermediate-circuit voltage, which forms a switch-on threshold for the brake chopper, and is disconnected at a minimum intermediate-circuit voltage, which forms a switch-off threshold for the brake chopper. The switch-on threshold and/or the switch-off threshold are dynamically changed during regenerative braking of the servomotor as a function of the current speed of the servomotor.

Abstract: The present application relates to an additive component comprising a component A and a component B, wherein component A comprises at least one hardening retarder selected from glyoxylic acid, salts thereof, condensation or addition products of glyoxylic acid or salts thereof, and mixtures thereof, and component B comprises at least one hardening accelerator selected from calcium-silicate-hydrate, calcium formate, calcium nitrate, calcium chloride, calcium hydroxide, lithium carbonate, lithium sulfate, potassium sulfate, sodium sulfate, ground gypsum, and combinations thereof, in 3D printing of a construction material composition.

Abstract: A method for executing a manipulator process with at least two manipulator poses with a manipulator, in particular a robot, wherein the manipulator comprises at least one drive means having a motor and a brake, comprising the steps of: (S10) Assuming a manipulator pose; (S20) Stopping at least one drive means; (S30) Closing at least one brake of this drive means; (S40) Reduction of the energy supply to the drive means; (S50) Increasing the energy supply to the drive means; (S60) Opening the closed brake; (S70) Assuming another manipulator pose.

Abstract: The invention relates to an industrial robot having a robotic arm. The robotic arm has several axes (A1-A6) and at least one electric drive, which comprises an electric motor (7-12) and power electronics (16) actuating the electric motor (7-12) and is equipped to move the relevant axis (A1-A6). The industrial robot (1) is equipped to short-circuit the electric motor (7-12) in the event of emergency braking simultaneously by means of two independent electric current paths.

Abstract: In a method and device for monitoring a movement-controlled machine, such as a manipulator, having an electronically commutated drive motor for which a commutation angle is provided based on its detected real position and a control variable, in particular a predetermined desired position, a limit value is determined for a rate of change in particular a time derivative of the real position of the drive motor, and the commutation angle is predetermined such that the rate of change of the commutation angle does not exceed a limit value.

Abstract: In a method and device for monitoring a movement-controlled machine, such as a manipulator, having an electronically commutated drive motor for which a commutation angle is provided based on its detected real position and a control variable, in particular a predetermined desired position, a limit value is determined for a rate of change in particular a time derivative of the real position of the drive motor, and the commutation angle is predetermined such that the rate of change of the commutation angle does not exceed a limit value.

Abstract: The invention relates to an industrial robot having a robotic arm. The robotic arm has several axes (A1-A6) and at least one electric drive, which comprises an electric motor (7-12) and power electronics (16) actuating the electric motor (7-12) and is equipped to move the relevant axis (A1-A6). The industrial robot (1) is equipped to short-circuit the electric motor (7-12) in the event of emergency braking simultaneously by means of two independent electric current paths.