166 results about "Process failure" patented technology

A real-time system and method for online monitoring a transient operation in a continuous casting process. The transient operation refers to, but is not limited to, submerged entry nozzle changes, flying tundish changes, product grade changes, etc. This invention treats the aforementioned transient operations as batch processes and utilizes multiway principal component analysis to develop a multivariate statistical model to characterize normal process transitions based on carefully selected historical process data. Such a model is used by an online monitoring system to determine if a continuous caster transient operation is normal. This monitoring system can further be used to predict an impending breakout, one type of catastrophic process failures which may occur in a continuous casting process, during the transient operation. Process variables that are most likely related to the predicted breakout are identified by the system such that appropriate control actions can be taken to prevent an actual breakout occurrence.

A method and system for detecting construction equipment process failure are disclosed. According to one embodiment, information about a construction equipment asset from a reporting source is received. A database is then populated with the information. A process failure report is provided if the construction equipment asset is operated in a manner which violates a process norm assigned to the construction equipment asset.

A thermally actuated shutdown seal provides a shutdown seal usable in a pump having a primary seal assembly positioned circumferentially about a rotating shaft for separating a region of high pressure coolant fluid from the shaft. The shutdown seal includes a two-piece interlocked housing which encompasses carbon graphite ring segments positioned circumferentially about the shaft, a garter spring and a series of compression springs. The replaceable insert with machined recess contains the shutdown seal assembly and is biased axially with a wave spring and held with the annular recess by a closure ring. The seal is designed with coolant fluid flow directly in contact with such ring segments and specially designed paths around the ring segments during normal pump operation. The seal requires a thermally actuated means for moving the two-piece interlocked housing axially into a blocking position within the coolant flow path to shutdown and minimize fluid flow bypassing the ring segments and between the ring segments and the pump shaft, upon occurrence of a process failure in the facility served by the pump and consequent temperature rise of the fluid being pumped.

In an apparatus and method for automatically correcting a design pattern in view of different process defects, defect characteristic functions that indicate frequencies of each process defect independent from one another are generated, and a normalization factor that indicates relationships between the defect characteristic functions is determined. A general defect characteristic function indicating a frequency of general defects is generated using the defect characteristic functions and the normalization factor. The general defect causes the same process failure as caused by each of the process defects. The design pattern is modified using the general defect characteristic function in such a manner that the frequency of the general defects is minimized when at least one portion of the design pattern corresponding to the model pattern is transcribed on the substrate. Accordingly, the whole design pattern may be automatically corrected based on the general defect characteristic function.

A p base ohmic contact of a silicon carbide semiconductor device consists of a p++ layer formed by high-concentration ion implantation and a metal electrode. Since the high-concentration ion implantation performed at the room temperature significantly degrades the crystal of the p++ layer to cause a process failure, a method for implantation at high temperatures is used. In terms of switching loss and the like of devices, it is desirable that the resistivity of the p base ohmic contact should be lower. In well-known techniques, nothing is mentioned on a detailed relation among the ion implantation temperature, the ohmic contact resistivity and the process failure. Then, in the ion implantation step, the temperature of a silicon carbide wafer is maintained in a range from 175° C. to 300° C., more preferably in a range from 175° C. to 200° C. The resistivity of the p base ohmic contact using a p++ region formed by ion implantation at a temperature in a range from 175° C. to 300° C. becomes lower than that in a case where the p++ region is formed by ion implantation at a temperature over 300° C. Further, this can avoid any process failure.

The invention relates to a sensor for direct current fault line selection and alternating current interlarding line selection. The sensor comprises at least one magnetic core or iron core for sensing a direct current or an alternating current, and a sensing signal of the magnetic core or iron core passes through a current signal conditioning unit and a micro-processing unit to be transmitted to an external interface circuit. The sensor can detect a fault branch circuit in time, provide basis for troubleshooting for overhaul personnel, enable a user to conveniently process failures as soon as possible and provide a powerful guarantee for safe, reliable and stable operation of a direct current power system.

The invention discloses a consumption method based on a consumption queue, a terminal and a computer readable storage medium, and relates to the technical field of communication. The consumption method based on the consumption queue comprises the following steps: obtaining current consumption information from the consumption queue of a Redis remote dictionary server; and monitoring the consumption condition of the current consumption information, and returning consumption failure information to the Redis in the case of processing failure of the current consumption information, so that the Redis adds the current consumption information to the consumption queue again. According to the consumption method disclosed by the invention, the consumption terminal monitors the consumption condition of each piece of consumption information and returns the consumption failure information to the Redis in the case of consumption failure of the consumption information, the Redis adds the information subjected to consumption failure to the consumption queue again and performs consumption processing again, until the consumption information is successfully processed. The leakage of the consumption information subjected to processing failure can be avoided, and the successful consumption of each piece of consumption information can be guaranteed.

The invention provides a multithread processing data method and device; the method comprises the following steps: determining the quantity of threads used for processing data, building threads of corresponding quantity, and recording state information of each built thread; distributing to-be processed data to each thread, so each thread can process corresponding data; monitoring a data processing process, when process failure data is monitored in a random thread, the processing state is recorded, the state information of the thread is updated, and the thread is finished. The method and device use a multithread mode to process data, thus improving data processing efficiency.

The invention discloses a preventative maintenance method of a fan gear case. The preventative maintenance method of the fan gear case includes: assuming factors which influence preventative maintenance of the fan gear case; obtaining failure rate of the fan gear case, which conforms to two parameter Weibull distribution, by processing failure data on the fan gear case, and using a maximum likelihood estimation method to figure out shape parameters and dimension parameters of the fan gear case; introducing a service age reduction factor and failure rate progressive increase factor mixing failure rate concept, and listing the failure rate and the failure number of the fan gear case in a preventative period; fully considering halt loss and halt time of a fan, and building a total preventative maintenance cost model of the fan gear case in a complete update cycle; adding constraint conditions of reliability in the optimum update cycle of the fan gear case, and building an optimum model which aims at minimizing total maintenance cost of the fan gear case in the optimum update cycle; using a genetic algorithm to perform a global search on the established optimum model, and using a nonlinear plan to perform a local search so as to obtain an optimum solution of a problem.

The invention discloses a remote operation and maintenance system and a method thereof; wherein the remote operation and maintenance system comprises a terminal, an interface message processor and an instruction processor; wherein the terminal is used for sending message to the interface message processor; the interface message processor is used for judging message type, decoding the messages according to the type and sending the decoding result to the instruction processor; the instruction processor which is provided with a mapping table comprises instruction codes and the corresponding operation and maintenance operation, and the instruction processor is used for receiving the decoding result of the interface message processor; the decoding result is corresponding to the instruction codes; the instruction processor is also used for executing the corresponding operation and maintenance of the instruction codes according to the decoding result and sending the operation and maintenance result to the terminal through the interface message processor. The remote operation and maintenance system and the method can execute operation and maintenance in time through various modes, thus achieving the purposes of being free from area and time limit and quickly processing failure without the personal presence of operators.

The invention discloses a device and a method of centralized treatment on business process failure in distributed integrated environment. The device comprises a failure identifier and a failure processor; wherein the failure identifier is configured to identify failures in each service calling in a way of being transparent to a service caller and a service callee; the failure processor is configured to retry the service calling corresponding to the failure identified by the failure identifier. By using the technical scheme of the embodiment of the invention, the treatment on business process failure in distributed integrated environment, such as integrated environment based on service component architecture (SCA) is simplified. As the failure identification and treatment are transparent to the caller and the callee, the cost of the business process management is lowered and the service quality of the business process is improved.