摘要:
In chatter monitoring of twin drives of roll stands, vibrations of an upper drive and a lower drive are detected and monitored to determine whether a predetermined amplitude has been exceeded. If the amplitude has been exceeded, a chatter detection signal is generated. In order to prevent the chatter detection signal from being generated erroneously due to an operational pass vibrations, the frequencies of the vibrations of the upper drive and the lower drive are monitored for identity; when the frequencies are identical, the chatter detection signal is suppressed.
摘要:
An embodiment of a communication system includes a client device adapted to receive a location object that includes tracer information, and to perform one or more location object-based actions using the location object. The client device stores the tracer information and location object usage information, which describes the one or more location object-based actions that have been performed using the location object. The client device also sends the stored information to a server. The system also includes the server, which is adapted to receive the location object usage information and the tracer information reported by the client device. In an embodiment, the system also includes a service provider adapted to initiate a billing event, which may include generation and transmission of a bill to a sponsor entity based on an evaluation of the location object usage information and the tracer information reported by the client device.
摘要:
The invention relates to a method for suppressing the influence of roll eccentricities on the run-out thickness of a rolled stock, which runs through a rolling stand, roll eccentricities being identified by using a process model and taken into consideration in the determination of a correction signal for at least one final control element, preferably a final control element for the adjustment position, of the rolling stand, wherein the measured tensile force upstream of the rolling stand is fed to the process model to identify the roll eccentricities. According to the invention, variations in tensile force are fed back in a targeted manner to reduce the effects of periodic roll eccentricities on the rolled stock, whereas all other sources of variation are eliminated. A process model of the rolling nip and the rolls, preferably based on the observer principle, produces reliable data on the roll eccentricity.
摘要:
In an information appliance system 100, a user device 108 comprises a client platform (200, FIG. 5) that includes a service framework (235, FIG. 5) to discover and connect with a variety of services, both remote and local, transient and persistent, and to disconnect from them when they are no longer of interest or become unavailable. The service framework 235 provides a standard, consistent, simplified way for services to make themselves available and for service-using entities to locate and connect with the services of interest to them. From the perspective of the client platform 200, all services, whether local or remote, are presented as local services to the application. Each remote service is represented as a local service through the use of a local proxy that insulates the service user from the complexities of communicating with a remote server. Various methods of operating a service framework are also described.
摘要:
Method and device for the reduction and/or compensation of speed drops when threading rolled stock into a roll stand whose rolling speed is controlled with a controller, the controller outputting a predefined supplementary value independently of its input in a predefined transition time interval shortly before, during, or shortly after the rolled sock is threaded into the roll stand.
摘要:
In a multi-stand rolling mill train, a strip successively runs through individual rolling stands. The strip—always as seen in relation to a rolling center line—is threaded into each of the rolling stands with known respective head offset and inlet-side head pitch, and therefore a strip head emerges with the respective head offset, a respective outlet-side head pitch and a respective outlet-side head curvature. The respective outlet-side head pitch is determined on the basis of respective inlet-side head pitch and pass reduction which takes place in the respective rolling stand. The respective outlet-side head curvature of the strip is determined based on respective measured and further data. The respective outlet-side head curvature is used to determine a respective control intervention for the respective rolling stand and/or the one arranged directly downstream and to drive the corresponding rolling stand in accordance with the respective determined control intervention.
摘要:
A method is provided for adjusting the inflow of liquid metal into a continuous casting mold using a closing device. The partially solidified metal strand is drawn out of the continuous casting mold. A measured actual value of the casting level is fed into a casting level controller, which derives a target setting for the closing device. The measured actual value and a target setting of the closing device are fed to an interference compensator, which determines an expected value for the casting level, which is subtracted from the measured actual value. The difference is fed to a differential controller that derives a controller output signal therefrom, which is multiplied by a superposition factor and superimposed on the target setting as an interference compensation value. An inflow signal derived from the actual setting is further superimposed on the controller output signal and fed to an integrator, which generates an output signal corresponding to the expected value for the casting level.
摘要:
In an information appliance system 100, a user device 108 comprises a client platform (200, FIG. 5) that includes a service framework (235, FIG. 5) to discover and connect with a variety of services, both remote and local, transient and persistent, and to disconnect from them when they are no longer of interest or become unavailable. The service framework 235 provides a standard, consistent, simplified way for services to make themselves available and for service-using entities to locate and connect with the services of interest to them. From the perspective of the client platform 200, all services, whether local or remote, are presented as local services to the application. Each remote service is represented as a local service through the use of a local proxy that insulates the service user from the complexities of communicating with a remote server. Various methods of operating a service framework are also described.
摘要:
In a multi-stand rolling mill train, a strip successively runs through individual rolling stands. The strip—always as seen in relation to a rolling centre line—is threaded into each of the rolling stands with known respective head offset and inlet-side head pitch, and therefore a strip head emerges with the respective head offset, a respective outlet-side head pitch and a respective outlet-side head curvature. The respective outlet-side head pitch is determined on the basis of respective inlet-side head pitch and pass reduction which takes place in the respective rolling stand. The respective outlet-side head curvature of the strip is determined based on respective measured and further data. The respective outlet-side head curvature is used to determine a respective control intervention for the respective rolling stand and/or the one arranged directly downstream and to drive the corresponding rolling stand in accordance with the respective determined control intervention.
摘要:
An embodiment of a communication system includes a client device adapted to receive a location object that includes tracer information, and to perform one or more location object-based actions using the location object. The client device stores the tracer information and location object usage information, which describes the one or more location object-based actions that have been performed using the location object. The client device also sends the stored information to a server. The system also includes the server, which is adapted to receive the location object usage information and the tracer information reported by the client device. In an embodiment, the system also includes a service provider adapted to initiate a billing event, which may include generation and transmission of a bill to a sponsor entity based on an evaluation of the location object usage information and the tracer information reported by the client device.