73 results about "Reliability methods" patented technology

Methods, systems, and computer program products are disclosed for storage of computer data on data storage devices of differing reliabilities that include maintaining a usage statistic for each block of data stored on each data storage device of a system and moving a block of computer data from a first data storage device to a second data storage device in dependence upon the usage statistic for the moved block and the reliabilities of the first and second data storage devices. Embodiments may include storing by a storage reliability controller blocks of data at storage locations on the data storage devices. Such a storage reliability controller may implement a layer of storage virtualization in an operating system of a computer system. Embodiments typically include mapping by a storage reliability controller block identifiers of the storage reliability controller to storage locations of the data storage devices.

Methods for forming conductor contacts provide for etching through a capping layer located upon a conductor contact region within a substrate. A first pair of methods provide for etching through at least a lower thickness of the capping layer with other than a reactive ion etch to provide an exposed conductor contact region. A partially overlapping second pair of methods provides for converting at least an upper thickness of the capping layer to a converted material layer that is removed incident to providing an exposed conductor contact region. As adjunct to any of the methods, a liner layer is formed and located upon the exposed conductor contact region in absence of an undesirable reactive environment.

Methods and example implementations described herein are directed to systems and methods for maintaining network-on-chip (NoC) safety and reliability. An aspect of the present disclosure relates to an network-on-chip (NoC)-based error correction system capable of supporting a network interface (NI) that transmits a flit between a transmission side (Tx) intellectual property (IP) element and a receiving side (Rx) IP element. The system includes an encoder configured to receive a k-bit flit from the Tx IP element and encodes the k-bit flit into n-bit data (where k and n denote any natural numbers), and a decoder configured to receive the n-bit data, decode the n-bit data into the k-bit flit, and output the k-bit flit, the decoder having an error correction circuit for correcting an error in the n-bit data. In an aspect, the error correction circuit comprises a multiple overlapping layers of coverage configured for the NoC transport infrastructure.

The invention discloses an intelligent substation clock synchronization reliability method capable of improving network sampling. The method comprises the steps of selection of a master clock for an external time source, switching of the external time source and self-adaptation delay compensation between the master clock and an extenpasion clock. The method can achieves reliable switching of the external source of the clock and effectively solves the problem that source switching or loss of a part of the external source causes time signal instability and signal loss. In addition, the method can effectively improves the stability for a clock device to trace external source signals, the clock device can effectively select a reliable external source, abnormal work, caused by time abnormality of the external source, of the clock device is prevented, and the long-term stability of time output of the clock device is guaranteed. The method can further achieve main expansion time tick and finish self-adaptation delay compensation of a main expansion chain simultaneously and effectively improves the reliability and the high accuracy of output time of a clock system of a substation.

A method of forming a through-glass via hole involves providing a glass substrate having first and second substantially planar parallel surfaces; masking the first and second substantially planar parallel surfaces to form a via-patterned portion thereon; and etching the via-patterned portion on the first and second substantially planar parallel surfaces to form a first channel in the first substantially planar parallel surface and a second channel in the second substantially planar parallel surface. The first channel and second channel are substantially orthogonal or non-orthogonal to one another. The first channel and the second channel intersect to form a quadrilateral through-glass via hole having via openings at the first and second substantially planar parallel surfaces. A low cost, low complexity and high reliability method for producing a glass substrate having a plurality of through-glass via holes such that the glass substrate can be used, for example, as an interposer.

The invention discloses a method for assessing the reliability of a main shaft of a kilometer deep shaft hoist by considering multiple failure modes. The method comprises the steps of firstly, building a parametric three-dimensional model of the main shaft according to the structure size of the main shaft; secondly, according to a probability attribute of a random variable of the main shaft, establishing a sampling matrix of the random variable, and solving strength and stiffness response of the main shaft under the sampling matrix by using a finite element method; thirdly, establishing an explicit function between the response and the random variable matrix by using a neutral network method, and according to strength and stiffness design criteria, establishing explicit functions in strength and stiffness failure modes; fourthly, calculating two failure probabilities by using a saddle point approximation method; and finally, building a joint failure probability model between the two failure modes through a Clayton copula function, and solving system reliability under joint failure by using an interval reliability method. According to the method, the probability correlation between strength failure and stiffness failure is considered, so that the system reliability of the main shaft of the hoist can be assessed more accurately and reasonably.

The invention discloses a high-reliability method for rapidly forecasting a rolling dynamic derivative of an aircraft. The high-reliability method includes the steps of generation of model surface grids and division of spatial grids, calculation of aerodynamic parameters under a rotating coordination system, and difference calculation of the rolling dynamic derivative. A calculation method for the aerodynamic parameters under the rotating coordination system includes (1), transforming a Navier-Stokes equation under an inertial system to the rotating coordinate system; (2), performing numerical solution on the transformed equation to acquire a flow field of each state; (3), acquiring aerodynamic force through surface integration of object-plane pressure and viscous stress, taking moment from the center of mass through surface force and integrating to acquire aerodynamic moment acting on the center of mass. The difference calculation includes calculating the aerodynamic force and the aerodynamic moment of a model at two different revolving speeds, and acquiring the rolling dynamic derivative of the model by a difference method. The method is high in reliability of calculation results, has a much smaller calculated amount as compared with a non-steady forced vibration method which is time-consuming for accurate solution, and can quickly forecast the rolling dynamic derivative of the aircraft in a highly reliable manner.

Methods to increase metal interconnect reliability are provided. Methods include forming a conformal barrier layer within an opening in a semiconductor device structure and forming a copper alloy material above the conformal barrier layer. Next, removing the copper alloy material that extends beyond the opening. Removing native oxide from a top surface of the copper alloy material. Further, annealing or applying a plasma treatment to the copper alloy material. Finally, forming a capping layer above the copper alloy material. Notably, near the top of the copper alloy material, smaller copper grain growth may be present. Furthermore, more non-copper alloy atoms are present near the top of the copper alloy material than the bulk of the copper alloy material.

The invention discloses a method for enhancing the reliability of a program of a multi-replica contrast mechanism based on a code segment. In the method, an kernel thread is started as an initialization thread, the initialization thread obtains a process memory information, two replicas of a process code segment are stored in a physical memory, the process code segment is also divided into memory domains with the fixed size, the kernel threads with a corresponding amount are started as a consistency maintenance thread to maintain the consistency of a process code domain and a replica thereof in real time according to a division result, and program code segment errors caused by various software and hardware faults are discovered and recovered in time. The invention is simple to realize, is transparent to a protected process and can efficiently detect the program code segment errors, thereby preventing program crash and even system invalidation caused by the code segment errors and improving the operation reliability of the program.

The invention provides a method for analyzing reliability of a mechanical structure with an effect of coupling multiple failure mechanisms. Simultaneous actions and interaction of the failure mechanisms can be considered, and the reliability, reliable service life and sensitivity of the structure are analyzed. The method mainly comprises five steps: determining a damage equivalence main parameter,and showing the actions of the multiple failure mechanisms by using the same parameter by taking damage equivalence as a basic principle; constructing a damage equivalence physical model, and establishing a damage superposition model or a correction factor model according to difference of the contribution ratio of the failure mechanisms; carrying out parametric simulation, controlling the geometrical shape, material attribute, load and the like of the structure by adjusting parameters, and automatically reconstructing the damage equivalence physical model; analyzing randomness of the failurephysical model, considering parameter randomness, and analyzing the reliability, reliability sensitivity, reliable service life and the like of the structure with the aid of an improved primary reliability method and the like; and correcting a randomness result of the failure physical model by fully using data in a product development and use process on the basis of Bayes model randomness correction so as to improve analysis precision.

Methods for forming a via structure are provided. The method includes depositing a first-layer conductive line over a semiconductor substrate, forming a dielectric layer over the first-layer conductive line, forming a via opening in the dielectric layer and exposing the first-layer conductive line in the via opening, forming a recess portion in the first-layer conductive line, and filling the via opening to form a via extending through the dielectric layer to the first-layer conductive line. The via has a substantially tapered profile and substantially extends into the recess in the first-layer conductive line.

The invention discloses an electric energy meter failure rate assessment method. The method comprises the following steps of acquiring the failure data of an electric energy meter; selecting a corresponding B spline primary function order according to the failure data characteristics and the model complexity; selecting a corresponding likelihood function according to distribution of fault data ofthe electric energy meter, embedding a B spline function into the Bayesian model, and establishing a hierarchical Bayesian B spline model; after normalization processing is carried out on the effective data with the noise points removed, using the effective data as the input data of the model to train the model; according to the failure data of the electric energy meter, estimating the failure rate of the electric energy meter through the model, so that the problems that an existing data fusion reliability method is incomplete in analysis result, uncertain in model, prone to underfitting undersmall samples and the like, and the accuracy and comprehensiveness are difficult to consider at the same time are solved.

The invention belongs to flash memory chip reliability test technology, and particularly relates to a method and a test device of judging flash memory chip reliability through operation time or currents. According to the method, firstly, operation time or currents of a sample flash memory chip are collected through the test device, then data are analyzed, correspondence relationships of the data and flash memory chip reliability are established, then the operation time and the currents of a to-be-tested flash memory chip are collected by the test device, and finally, the correspondence relationships of the reliability are combined for judging the reliability of the to-be-tested chip. Compared with general methods, the method of judging the flash memory chip reliability provided by the invention is not liable to interference of values of stored data in flash memory, and overcomes, at the same time, the shortcomings that the general methods cannot effectively prevent sudden invalidationof the flash memory and caused data losses.

The invention discloses a design flood derivation method and system based on equal reliability in a climatic change scene. The invention belongs to the field of reservoir flood control safety design.A future climate change scene is obtained based on global climate mode output and a two-stage deviation correction method considering meteorological variable correlation; a VIC distributed hydrological model is driven to obtain a runoff situation considering the influence of climate change; a principal component analysis method is adopted to preferably select an extreme rainfall index influencingflood characteristics as a covariable; a time-varying hydrological frequency analysis model is constructed by considering inconsistency of a flood sequence, a flood design value combination under a climatic change scene is deduced based on an equal reliability method, a most possible value is adopted as a final design value, and a 95% confidence interval is selected to estimate uncertainty of thefinal design value. According to the method, the influence of climate change on flood characteristics can be fully considered, and an important reference basis with high operability can be provided for deducing adaptive design flood in a climate change scene.

The invention provides a method for improving double-tunnel reliability. The method comprises the steps of establishing tunnel connection between a first L2TP network server (LNS) and a monitoring terminal and between the first LNS and a monitoring server respectively, and allocating a tunnel Internet protocol (IP) address in a first tunnel IP address pool to the monitoring terminal, wherein a tunnel IP address of the monitoring server is configured in advance, and the tunnel connection is established between the monitoring server and a second LNS; learning routing information of the monitoring terminal, which serves as a main routing to be added into a routing list, adding routing information issued by the second LNS into the routing list to serve as a spare routing; issuing the learnt routing information to the second LNS; and transmitting a message coming from the monitoring terminal or the monitoring server according to the routing list, and using the spare routing to transmit the message when the main routing fails. The method effectively solves the problem that part of terminal services are interrupted when the connection between video management (VM) and a media server (MS) in the prior art breaks down, and the method can solve the problem of flow circumambulating through cooperation of a plurality of devices.

The invention relates to a high-reliability method and a device for gas concentration measurement. The method includes: presetting a scene parameter range threshold and a corresponding scene infrared source power value; system zeroing, completing gas concentration measurement within preset device measurement time, and comparing the obtained real-time scene parameter value with the preset scene parameter range threshold; backing if the obtained real-time scene parameter value is not within the preset scene parameter range threshold; and if the obtained real-time scene parameter value is within the preset scene parameter range threshold, operating at a corresponding scene infrared source power, acquiring a calculation zero point, acquiring, analyzing and calculating infrared signals within the preset measurement time, and backing after gas concentration measurement within the preset measurement time is completed. Using the method can flexibly adjust driving power of an infrared source according to different application scenes, the service life of the infrared source is effectively prolonged while system measurement requirements are met, long-term stability of the system is improved, and system power consumption and hardware cost are reduced.

The invention discloses a method for acquiring the reliability of a direct-current power transmission system based on parameter matrix, comprising the following steps: determining a system reliability block diagram according to the topology and the running status of a direct-current power transmission system; extracting running statistical information of each component and calculating to obtain reliability parameters of the component, and establishing subsystem reliability models according to the mode of component connection; combining the subsystem reliability models by a parameter matrix method and calculating to obtain a direct-current power transmission system reliability model; and selecting reliability indexes, and calculating the reliability indexes on the basis of the system reliability model, so as to achieve the purpose of direct-current power transmission system reliability evaluation.

The invention discloses a method for identifying kitchen waste oil. The method comprises the following steps of (1) constructing a fingerprint database of different types of oil by measuring fatty acid compositions of all types of oil, constructing judgment functions of all the types of oil, and judging the kitchen waste oil serving as a given sample through the functions; (2) analyzing main components of all the types of oil by an analysis method according to an acid value, a peroxide value, polar components, metal elements and the trans-fatty acid content which serve as quality indexes, extracting the main components to construct a math evaluation model, identifying the kitchen waste oil according to main component score ranges of all the types of oil, determining the fatty acid compositions and the quality indexes of the sample to be detected through the verification test and analyzation, and then identifying the kitchen waste oil by the judgment method and the main component score method. According to the method, the adulteration quantity of more than 10 percent of the kitchen waste oil can be detected, and the method is an effective and high-reliability method for identifying the kitchen waste oil.

The invention discloses a method for identifying true and fake brewed soybean sauce. The method comprises the following steps: determining amino acid components in brewed soybean sauce, prepared soybean sauce and an acid hydrolyzed plant protein seasoning liquid sample, and carrying out clustering analysis on 18 types of characteristic amino acid components in each type of the soybean sauce to form a distance matrix D of each type of the soybean sauce; carrying out primary classification; and carrying out main component analysis to form a main component projection drawing, and adopting a clustering space distance judging method to judge. A distance matrix D classification method is combined with the clustering space distance judging method to establish an identification model for distinguishing the true and fake brewed soybean sauce, so that the identification of the true and fake brewed soybean sauce is realized; the amino acid components of a sample to be detected are determined through identification test and analysis; and the model is used for identifying the true and fake brewed soybean sauce. The method can detect the soybean sauce adulteration amount added with not less than 10% of acid hydrolyzed plant protein seasoning liquid and is the efficient and high-reliability method for identifying the true and fake brewed soybean sauce.

The invention discloses a structural reliability analysis method based on second order saddle point approximation under hybrid uncertainty. By performing univariate approximation for a limit state equation at a mean point of a random variable and a central point of an interval variable, determining a minimum value and a maximum value of the equation subjected to approximation on the interval variable, determining a cumulant generating function of the minimum value and the maximum value of the limit state equation on the interval variable, and respectively calculating a saddle point value, thus, reliability of a system can be calculated. Compared with the existing reliability method, the method provided by the invention has no need of searching a limit state equation reliability design checking point, improves calculation efficiency, can be applied to structural reliability analysis under hybrid uncertainty and has better universality.

The invention discloses a time-varying reliability method applied to a mechanical structure. In consideration of the time variation of a mechanical structure in the time history, due to long-time use,time variation or dynamic characteristics often occur in parameter uncertainty and structural reliability due to the time variation generated by the material performance, the environment condition, the load effect and the like of the mechanical structure and the influence of various other factors; uncertainty of each parameter of an uncertainty random variable expression structure is introduced,and a Wiener process is used for describing a structural strength degradation process, so that the problem of calculation of the reliability of a time-varying structure is solved. On the basis of improving a primary second moment method, conversion from related non-normal variables to independent standard normal variables is completed through proposed linear Nataf changes, time-varying reliabilitymodeling is carried out again, and the reliability calculation problem that random parameters obey arbitrary distribution is solved. The method can effectively solve the problem of reliability and sensitivity during structural system strength degradation.

The invention provides an application stage virtualization high-reliability method and device. The method comprises the following steps that service state information requiring monitoring service in a virtual machine operation system is collected, and in addition, service state information requiring the monitoring service and having the abnormal service state is filtered out; the service state information of the service requiring the monitoring and having the abnormal service state is analyzed, a processing instruction relative to each service state is generated, and the processing instruction includes a plurality of parameters; an API (application program interface) corresponding to the name of the processing instruction is found, the API interface is called, the service name of the processing instruction parameters is loaded in, and the abnormal state restoration operation is completed. Compared with the prior art, the method and the device have the advantages that the high reliability is realized by aiming at the application service in a virtual machine, and the real-time high-reliability processing of the service during stop or pause due to non-physical fault is guaranteed, so that the uninterrupted operation of the service can be realized.

The invention relates to a preparation method and a preparation system of a multi-cell structure on the basis of a reaction-diffusion model. The preparation method comprises the following steps of S1, performing culture in vitro on stem cells through a built three-dimensional gel system; S2, regulating and controlling the multi-cell structure form. The method for regulating and controlling the multi-cell structure form formed by mesenchymal stem cell self tissues provided by the invention completely depend on self assembly of the cells; the necessary external structure material and the complicated processing and manufacturing process in the existing tissue in vitro building method can be completely omitted; by the whole preparation method, the mutual communication capability among a great number of cells can be more sufficiently utilized; the process is more similar to the natural formation process of the tissue in the body; a high-reliability method which is more similar to the natural tissues in the body is provided for the artificial tissue preparation.

The invention discloses a method for improving the pressure-resistant capacity and the working reliability of a magnetic fluid seal in a high-temperature working environment, belongs to the technical field of mechanical engineering seals, and is particularly applicable to the magnetic fluid seal. An iron-nickel alloy material with the anomalous thermal expansion characteristic and a ferromagnetic material with the larger thermal expansion coefficient and good comprehensive mechanical properties are selected, pole shoes and a sealing shaft which are matched with each other are made of the selected ferromagnetic material, pole shoe sleeves which are in interference fit with outer rings of the two pole shoes are made of the selected iron-nickel alloy material, and the radial width ratio of each alloy sleeve to each pole shoe is 1:2. With the adoption of the method, defects of existing methods for the magnetic fluid seal at the high temperature are overcome, and the method has the important significance in solving usage problems of the magnetic fluid seal in the high-temperature environment and broadening the application range of the magnetic fluid seal.

The invention discloses a method for assessing quality of service of an A-GNSS server and a system thereof. The assessment is performed mainly beginning from the service availability, reliability andintegrity of the A-GNSS server, the support capacity of multiple auxiliary positioning technologies and the protocol support capacity. The method for assessing the reliability of auxiliary positioningdata of the A-GNSS server comprises the following steps: sending an auxiliary positioning request of a known positioning auxiliary result to an A-GNSS server through a positioning terminal virtual machine; judging whether a positioning auxiliary result fed back by the A-GNSS server is consistent with concerned data in the known positioning auxiliary result; and judging that the auxiliary positioning data provided by the A-GNSS server is reliable if the positioning auxiliary result fed back by the A-GNSS server is consistent with concerned data in the known positioning auxiliary result; or judging that the auxiliary positioning data provided by the A-GNSS server is unreliable if the positioning auxiliary result fed back by the A-GNSS server is inconsistent with concerned data in the knownpositioning auxiliary result. Through the method disclosed by the invention, the problem that the quality of service of the A-GNSS server cannot be intuitively judged at present is solved.

The invention discloses a non-probabilistic trusted Bayesian structure reliability method. The method comprises the steps: describing an interval variable through two parameters: an interval central value and an interval radius, and expressing the parameter through an interval; considering the limitation of the number of samples and the requirements of model updating, parameters are updated by introducing a Bayesian updating method so as to realize updating of a variable interval. In the parameter updating process, the confidence level is introduced, so that the reliability obtained through calculation has certain credibility. The non-probabilistic method provided by the invention is compared with a traditional confidence reliability method and a probabilistic trusted Bayesian reliabilitymethod with non-information prior distribution, and the feasibility and effectiveness of the method are verified. The reliability analysis method can be used for reliability evaluation of structural optimization design and structural safety in the future.