Abstract: An issuing device is configured to: respond to a challenge request by transmitting a challenge; and respond to a certification request including a public key and ownership information thereof by issuing a digital certificate certifying the ownership information. The ownership information includes counterparty identity information relating to a ledger of a distributed database. The digital certificate is issued if it is successfully verified that a valid response to the challenge has been posted to the ledger of the distributed database and is associated therein with the counterparty identity information of the certification request. The digital certificate facilitates proofing that an owner of a public key is a given counterparty to a blockchain ledger. Also, a corresponding requesting device and corresponding methods and computer program products for issuing and requesting a digital certificate are disclosed.

Abstract: A hyperlink message for machine-to-machine (M2M) or machine-to-human (M2H) communication has a semantic metadata tag, a content field, an executable specification field. Executable specification instructs a machine to perform a task associated with the machine related data, and post to a machine social media platform results of the task as content for the hyperlink message. The hyperlink message posting is visible and available to other participating machines on the machine social media platform to read and contribute related content as a hyperlink discussion of M2M or M2H communication.

Abstract: In a method of manufacturing a power module unit, cooling fins are positioned in recesses of a frame, in particular a metal frame. A first metallic material is applied to the cooling fins and the frame by a thermal spraying process, causing the applied first metallic material to produce a material bond between the cooling fins and the frame.

Abstract: A method, device and computer program product for securing access to an encoded variable in a computer program with a plurality of encoded variables that each having its own dynamic signature, wherein when the encoded variable is accessed, the dynamic signature of the variable is modified, where the sum value for all dynamic signatures of all other encoded variables is controlled in an encoded tracer variable, the sum value being controlled in the tracer variables is adapted if a dynamic signature of one of the encoded variables is modified, the encoded variable is compared with the sum value stored in the encoded tracer variable to monitor the sum of the dynamic signatures, and where an error handling process is initiated in the event of a discrepancy such that all signatures in an arithmetically encoded program can be managed in a high-performance manner regardless of the complexity of the program.

Abstract: Provided is a device unit, including a module, which can configure the device unit with an operating state from among different operating states during the start-up process and/or during ongoing operation of the device unit, wherein a first protected operating state of the different operating states is designed to allow the execution of at least one operating process which can be predefined and to optionally protect the operating process by means of defined cryptographic means, wherein at least one second operating state of the different operating states is designed to deactivate the first protected operating state and to allow at least one other changeable operating process and to optionally protect the operating process by means of specifiable cryptographic means.

Abstract: For manufacturing process control, closed-loop control is provided (18) based on a constrained reinforcement learned network (32). The reinforcement is constrained (22) to account for the manufacturing application. The constraints may be for an amount of change, limits, or other factors reflecting capabilities of the controlled device and/or safety.

Abstract: Various embodiments of the teachings herein include an image stitching method comprising: acquiring a current frame of a first picture photographed by a first camera and a second camera, wherein an overlap exists between photographed regions in the pictures; determining whether the relative position relationship between the cameras stay unchanged when a current frame and a previous frame of pictures are photographed; if the first condition is met, acquiring a first projection transformation parameter used when a projection transformation is performed for the previous frame of a third picture photographed by the first camera and a second projection transformation parameter used when a projection transformation is performed for the previous frame of a fourth picture photographed by the second camera; and blending the pictures using the first parameter to perform a projection transformation for the first picture and the second parameter to perform a projection transformation for the second.

Abstract: Various embodiments include a method for manufacturing a stack of magnetic laminations for a rotor and/or stator of an electric machine. The method includes: recording a respective physical property of each respective magnetic lamination from a plurality of magnetic laminations; determining a setpoint value for a physical variable of the stack of magnetic laminations; ascertaining a stacking sequence of the individual magnetic laminations of the plurality reducing a deviation of an actual value for the physical variable of the stack with the ascertained stacking sequence from a setpoint value in relation to stacks with other stacking sequences of magnetic laminations; and stacking the plurality of the magnetic laminations in the ascertained stacking sequence.

Abstract: A method for communicating with at least one field device via an interface device, wherein each field device is connected to a channel of the interface device, where the method includes receiving a first command associated with a first field device, from an industrial device, communicating with the first field device over a first communication channel for executing the received first command, receiving at least one command associated with the at least one field device, from the industrial device, the at least one commands including at least one command associated with a second field device from the at least one field device, and caching the at least one command in a memory module prior to the execution of the first command.

Abstract: A conversion device converts an input power into an output power, and gives rise to a power loss. The conversion device is cooled by a coolant circuit in which a coolant flows. A monitoring device determines, using operating data of the conversion device and/or of the coolant circuit, a flow velocity of the coolant and compares the flow velocity with a limit velocity. If the flow velocity reaches or exceeds the limit velocity, the monitoring device resorts to a special reaction. As long as the flow velocity does not reach the limit velocity, the monitoring device resorts either to no reaction or to a normal reaction that is not the same as the special reaction. The monitoring device determines the flow velocity by using a quantity of heat that is to be removed by the coolant per unit time, a local temperature of the conversion device, and an inflow temperature.

Abstract: Methods, devices, and assemblies for controlling pressure in a supply grid are provided. The supply grid is suitable for supplying fluid to loads. The supply grid has first sensors for measuring the flow and/or the pressure of the fluid at first locations in the supply grid and a pump for pumping the fluid or a valve for controlling the flow of the fluid. The method includes: measuring the flow and/or pressure of the fluid at the first locations in the supply grid by the first sensors; predicting the pressure at the second location in the supply grid using a self-learning system based on the measured flows or pressures, wherein the self-learning system is trained to predict the pressure at a specified location in the supply grid; and actuating the pump or the valve at least also based on the pressure predicted by the trained system at the second location.

Abstract: A differential protection device monitors a first object to be protected in an electrical energy supply network. The differential protection device has a measuring unit configured to acquire measurement values at one end of the first object to be protected, a communication unit configured to exchange measurement values with a differential protection device arranged at another end of the first object to be protected, the communication unit has a physical interface for transmitting and receiving the measurement values, and an evaluation unit configured to form a differential value and to generate a fault signal indicating a fault with regard to the first object to be protected if the differential value exceeds a predefined threshold value. Ideally, the differential protection device is configured to monitor further objects to be protected and to exchange respective further measurement values with regard to each further object to be protected.

Abstract: Various embodiments of the teachings herein include a fault processing method comprising: receiving two historical faults similar to a target fault; searching keywords in a description of the target fault and each historical fault, wherein the keywords are classified into N grades, and for each system component in a grade, the grade comprises at least one keyword for describing the component, wherein N is an integer no less than 2; for each of the N grades, counting a quantity of identical system components represented by the keywords in the text description of each historical fault and the target fault; and comparing a degree of similarity of each historical fault to the target fault according to the quantity of identical system components counted in each grade of the N different grades, wherein a historical fault relating to a larger number of high-grade identical system components has a higher degree of similarity to the target fault.

Abstract: A heat pipe heat sink operating as a pulsating heat pipe includes a body comprising internally a closed channel in which a fluid is arranged such that part of the fluid is present in gaseous form. The channel has a periphery which is designed to be smooth. The body includes a first body portion which is embodied as curved, alternatingly curved, serpentine or U-shaped. A coolant, in particular a gaseous coolant, flows through the first body portion along a surface of the first body portion, wherein portions of the channel are arranged parallel to one another and/or in the presence of more than one channel, different channels are arranged parallel to one another. The body is composed of two block parts, with parts of the channel being arranged on a boundary area of the two block parts, respectively.

Abstract: Various embodiments include a method for producing electronic assemblies. The method may include: applying a fluid printing medium in a structured manner using a printing device multiple times consecutively in a sequential series of individual printing steps; measuring a rheological property of the printing medium in an automated repeated series of individual measurement steps during or between the individual printing steps; executing a computer-implemented rheological model for the execution of the individual printing steps, using the repeatedly measured rheological property as a variable input parameter; determining a favorable value for a selected printing parameter with the rheological model based on the currently measured rheological property; and automatically setting the determined favorable value for the selected printing parameter.

Abstract: Events relevant for the service life are recorded for calculating the remaining service life of a switch. Events relevant for the service life are evaluated with respect to the frequency of their occurrence. The possibility of a future occurrence for the service life of relevant events is taken into account or not taken into account in accordance with the frequency of their occurrence for calculating the remaining service life.

Abstract: Provided is a computer-implemented method for generating a Component Fault and Deficiency Tree of a multi-component system the method including: a. modeling the multi-component system using a Component Fault and Deficiency Tree, b. the Component Fault and Deficiency Tree includes a plurality of component fault and deficiency tree elements associated with the respective components; c. each component fault and deficiency tree element includes at least one inport and at least one outport; d. each component fault and deficiency tree element includes at least two events as internal fault tree logic; e. at least one gate, f. each component fault and deficiency tree element includes at least one mitigation logic; g. at least one Boolean AND-Gate, configured to connect the internal fault tree logic and the at least one mitigation logic; and h. providing the generated Component Fault and Deficiency Tree of the multi-component system as output.

Abstract: Various embodiments include modeling a component fault tree for a circuit with an input-side and an output-side component. These include using a fault tree corresponding to a hazard for each respective component, obtaining information about the components of the circuit and a connection between components, and connecting the respective fault trees based on the circuit description. Each fault tree includes an input fault mode or a basic event and an output fault mode. The output fault mode and the input fault mode are each assigned to a component terminal. An output fault mode of the input-side component tree is connected to an input fault mode of the output-side component tree if: there is a connection between the assigned terminal of the input-side component and the output-side component and the output fault mode of the input-side component correlates to an input fault mode of the output-side component.

Abstract: Various embodiments include a computer-implemented method for task-oriented system definition, implementation and operation, the method comprising: importing representative model data including predefined model parameters by an interface component; importing one or more requirements for the model parameters by the interface component; executing measurement and importing measurement results data; aggregating and evaluating imported data, wherein the evaluation is performed depending on the requirements and measurement results data; storing imported data to a computer-readable storage component; operationalizing by adding measurements to the model requirements; and generating a task based on an algorithm performing a functional analysis of the model requirements.

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.