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1055 results about "Function model" patented technology

A function model or functional model in systems engineering and software engineering is a structured representation of the functions (activities, actions, processes, operations) within the modeled system or subject area.

Method and apparatus for debugging, verifying and validating computer software

A new approach for software debugging, verification and validation is disclosed. The present invention utilizes a knowledge-based reasoning approach to build a functional model of the software code for identifying and isolating failures in the software code. The knowledge-based reasoning approach of the present invention uses the software design, which is preferably based upon a flow chart or block diagram representation of the software functionality, to build the functional model. The software block diagram contributes to the functional model by defining the inputs and outputs of the various blocks of code, as well as defining data interconnections between the various blocks of code. In accordance with a method of the present invention, test points are strategically inserted throughout the code, and each test point is associated with a corresponding block of code. Expected values of the test points for an expected proper-operation execution of the computer program are generated. The computer program is then executed on a computer, and the actual values of the test points from the program execution are compared with the expected values of the test points. Failed test points which do not agree with corresponding expected values are determined. The functional model, which includes information functionally relating the various test points to one another, is then used to isolate the failed test points to one or more sources of failure in the code.
Owner:MCDONNELL DOUGLAS

Online estimation method of health state of lithium ion battery

The invention belongs to the field of lithium ion batteries, and discloses an online SOH estimation method of a lithium ion battery for solving the problems that characteristic parameters are difficult to be obtained online, the dependency of a model on training data is high, the required data size is large, the complex function relationship between the battery capacity and the characteristic parameters is difficult to be described by simple linear regression, and the estimation accuracy is difficult to be guaranteed in an implementation process of the existing SOH estimation technology. According to the online SOH estimation method disclosed by the invention, the characteristic parameters are obtained from a capacity increment curve by using a capacity increment method. The method does not require the battery to undergo a complete charging and discharging process, the feature parameter extraction is simpler, and the application of the method in the BMS is facilitated. The establishment of a characteristic parameter and SOH function model is completed by using a multi-output Gaussian process regression model method, the potential correlation between different outputs is better used, and the estimation accuracy of SOH is improved. Meanwhile, the dependency of the method on the training data is small, and the online SOH estimation method has very good adaptability on different types of lithium ion batteries.
Owner:徐州普瑞赛思物联网科技有限公司

Method and device for extending software function based on micro service architecture

The invention discloses a method and a device for extending a software function based on a micro service architecture. The method comprises steps: a software system is decomposed into multiple micro service function modules; according to the micro service information of each micro service function module, a configuration file for forwarding the micro service information of the micro service function module is built in a forwarding agent module; according to the configuration file, the forwarding agent module determines a target micro service function module address of the received micro service information, and the micro service information is forwarded to the micro service function module corresponding to the target micro service function module address; and when a function enhancement-type micro service function model is formed in the software system according to service function requirements, the forwarding agent module updates the configuration file according to the micro service information of the function enhancement-type micro service function model, and according to the already-updated configuration file, subsequently-received micro service information is forwarded. Thus, the software function can be dynamically extended.
Owner:ZTE CORP

Power utilization mode classification and control method based on user behavior characteristics

The invention discloses power utilization mode classification and control method based on user behavior characteristics. With an improved secondary clustering model built by use of a secondary clustering method, the load point of each day of the same user in one year in an industrial park is taken as a characteristic vector, the daily power utilization characteristics of the user can be concluded from a clustering result, and a plurality of typical power utilization modes of the enterprise user can be provided, and therefore, basis can be provided for load prediction, fault diagnosis, electricity pricing and the like in the industrial park; furthermore, the optimal plane power utilization mode in demand side management can be selected by virtue of optimization function modeling on load data; the model is advantageous for a power supply company to reduce the loss of electricity selling profit as much as possible under the premise of guaranteeing power supply; at last, a user power utilization behavior mode library in the industrial park built on the basis is capable of comparing a new settling enterprise inconvenient to model with the modelled typical user mode and obtaining the load characteristics of the new settling enterprise by virtue of analogizing, and therefore, the planning efficiency of the park can be improved.
Owner:STATE GRID CORP OF CHINA +3

Device for measuring linewidth of narrow linewidth laser based on optical fiber time-delay self heterodyne method as well as method for measuring thereof

The invention discloses a device of measuring the line-width of a laser with narrow line-width and a method of measuring the line-width based on a optical fiber delay self-heterodyne method; in the hardware device, an optical fiber delay line is connected between a first and a second couplers; an acousto-optic modulator is connected between the first and the second couplers; the measured laser is connected to the input of the first coupler, and a photoelectric detector is connected to the output of the second coupler; the photoelectric detector is connected with a spectrum analyzer. In the line-width measurement, simulation models of the line-width triangle v of the laser and the spectrum-width triangle f of the photoelectric current heterodyne signal are built in the frequency shift delay self-heterodyne methodology, and the function relation between the line-width triangle v of the laser and the spectrum-width triangle f of the photoelectric current heterodyne signal is obtained fitting of the three-level proportion function model. The invention presents that with the short optical fiber delay self-heterodyne method, the device can eliminate the deficiency of greatly reduced measuring precision because of not enough delayed time in the delay self-heterodyne method when the length of the delay optical fiber is less than 6 times coherence length of the laser, so as to provide an effective method of precisely measuring the line-width of the laser with narrow line-width in projects.
Owner:BEIHANG UNIV

Adaptive noise intensity video denoising method and system thereof

The invention discloses an adaptive noise intensity video denoising method which is based on motion detection and is embedded in an encoder. The method comprises the following steps: (1) taking a sum of regularization frame differences in a neighborhood as an observed value, dividing input pixels into a static pixel and a dynamic pixel and using filters in different supporting domains for the two kinds of the pixels, wherein a filtering coefficient is adaptively determined according to noise intensity and an image local characteristic; (2) taking a single DCT coefficient or the sum of the several DCT coefficients as the characteristic, using AdaBoost as a tool to construct a cascade-form classifier and using the classifier to select a static block; (3) establishing a function model of connection between DCT coefficient distribution parameters of the video noise intensity and the static block and using the model to estimate the noise signal standard difference. By using noise intensity estimation embedded in the video encoder and a noise reduction technology provided in the invention, few computation costs can be used to acquire the parameters and the information needed by noise filtering. A time efficiency is good. Because a reliable clue is used to determine whether the pixels accord with a static hypothesis, the filter of the invention can effectively filter the noise and simultaneously maintain marginal sharpness of the static image. And motion blur caused by filtering in a motion area can be avoided.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Combination machining method for removing high-frequency errors in optical elements

ActiveCN102848287AImprove high frequency errorOptical surface grinding machinesEngineeringSpectral density
The invention discloses a combination machining method for removing high-frequency errors in optical elements. The combination machining method includes measuring surface shape errors of an optical element to be machined by an interferometer, carrying out PSD (power spectral density) analysis, and determining distribution characteristics of the medium and high-frequency errors on the basis of a DSD curve; acquiring an optimized removal function model according to predetermined machining time and machining precision, and acquiring an amplitude spectral line of a removal function; acquiring cut-off frequency of the removal function according to the amplitude spectral line; machining by a magneto-rheological finishing process if correctable medium and high-frequency errors with the frequency lower than the cut-off frequency exist according to the frequency distribution of the medium and high-frequency errors; and machining by a computer controlled optical surfacing process if uncorrectable medium and high-frequency errors with the frequency higher than the cut-off frequency exist according to the frequency distribution of the medium and high-frequency errors. By the combination machining method, technical advantages of MRF (magneto-rheological finishing) and technical advantages of CCOS (computer controlled optical surfacing) can be sufficiently combined, efficient uniform convergence of all-band errors of the optical element can be realized, and performance of the optical element is effectively improved.
Owner:NAT UNIV OF DEFENSE TECH

Method for determining satellite differential pseudo-range deviation based on single-frequency navigation satellite data

The invention discloses a method for determining the satellite differentia pseudo-range deviation based on single-frequency navigation satellite data, and relates to a satellite differential pseudo-range deviation determination and correction technology in satellite navigation applications. The method comprises the steps of A, acquiring single-frequency GNSS original observation data and obtaining precision satellite orbit and clock error products; B, building single-frequency GNSS non-combination pseudo-range and phase observation equations; C, building a single-frequency non-combination precision single-point positioning function model; D, solving single-frequency non-combination precision single-point positioning Kalman filtering; and E, performing ionospheric delay modeling and determining the navigation satellite differential pseudo-range deviation. Determination for navigation satellite differential pseudo-range deviation parameters is realized by using a single-frequency receiver, and the hardware cost of an existing navigation satellite differential pseudo-range deviation estimation method can be reduced by more than 90%. Meanwhile, the method is reasonable and simple in design and improves the efficiency. The design is not only low in cost, but also high in efficiency.
Owner:INST OF GEODESY & GEOPHYSICS CHINESE ACADEMY OF SCI

Wireless sensor network temperature monitoring method based on improved Kriging algorithm

ActiveCN106714336AThe science of predicting outcomesEnergy saving life cycleThermometer detailsTransmission systemsTerrainStructure analysis
The invention discloses a wireless sensor network temperature monitoring method based on an improved Kriging algorithm. The wireless sensor network temperature monitoring method comprises the steps of: firstly, establishing a layer cluster type wireless sensor network topological structure, analyzing historical temperature data of a target region, setting a threshold value rho and a fusion cycle T, performing periodic fusion on in-cluster node data at a cluster head node based on the threshold value rho, acquiring initial temperature data, transmitting the initial temperature data to a monitoring host by means of a wireless link and saving the initial temperature data in a local database; importing the initial temperature data, and performing variable structure analysis on the initial temperature data to generate a variation function expression; and optimizing a variation function model by utilizing an improved Nelder-Mead simplex method, designing a regular grid terrain, performing temperature interpolation by adopting an ordinary Kriging algorithm, carrying out error correction, and outputting a regular grid temperature field pattern. The wireless sensor network temperature monitoring method optimizes the variation function model by utilizing the improved Nelder-Mead simplex method, corrects weights of the ordinary Kriging algorithm, performs error compensation on the interpolation result, and makes the interpolation result more scientific and closer to the actual situation.
Owner:NANJING UNIV OF POSTS & TELECOMM
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