64results about How to "Verify suitability" patented technology

Disclosed are methods for utilizing programmable logic devices that contain at least one localized defect. Such devices are tested to determine their suitability for implementing selected designs that may not require the resources impacted by the defect. If the FPGA is found to be unsuitable for one design, additional designs may be tested. The test methods in some embodiments employ test circuits derived from a user's design to verify PLD resources required for the design. The test circuits allow PLD vendors to verify the suitability of a PLD for a given user's design without requiring the PLD vendor to understand the user's design.

The invention discloses a test system for an information acquisition wireless downlink channel network, which comprises a host machine, a concentrator shielding box connected with the host machine, and a plurality of assemblies which include a variable attenuator, a combining network module connected with a radio frequency cable of the variable attenuator, a collector shielding box connected to the radio frequency cable of the combining network module, wherein the assemblies and a route build the hierarchy and the route matched with a wireless network according to the hierarchy of the wireless to be tested, the variable attenuator of the assembly in the first network hierarchy is connected with the concentrator shielding box through the radio frequency cable; the variable attenuator of the assembly below the second network hierarchy is connected to the combining network module of the former hierarchy of the assembly through the radio frequency cable; a connection serial port is arranged the host and the concentrator shielding box; and the host can control the transmission distance of the signals in a radio frequency cable channel in the multi-wireless network hierarchy and route by adjusting attenuation amplitude of the variable attenuator, further adjusting the wireless hierarchy and the route.

The invention provides an on-board router simulation method of a delay-tolerant network. The on-board router simulation method of the delay-tolerant network comprises the steps that (1) an on-board router model is constructed by combining a CCSDS and a DTNRG, and feasibility and validity verification is conducted in an OPNET; (2) conversion between a virtual data stream and a real data stream is achieved based on an SITL interface of the OPNET, and the processing capacity of a gateway is verified; (3) relevant inter-satellite and satellite-to-ground data in a network topology are obtained through an STK and are introduced into simulation software for simulation of an inter-planetary network; (4) relevant settings such as the delay and the error rate are conducted on a network damage instrument, and a spatial link is simulated. The on-board router simulation method of the delay-tolerant network has the advantages that the on-board router model is provided by organizing existing space communication protocol systems, and preparation is made for realizing a DTN protocol system in China and studying the key technology of a spatial information network; due to the combination of software and hardware, real simulation of the environment of a satellite network is achieved, and the adaptability of an on-board router to the spatial environment can be verified easily.

The invention relates to a design response spectrum based floor structure dynamic response testing method under walking loading. The design response spectrum based floor structure dynamic response testing method under the walking loading comprises (1) collecting a large amount of single-people walking load curves and forming into an actual measurement loading database; (2) inputting the actual measurement loading database to a standard excitation system after the actual measurement walking loading data is performed on normalization processing to be performed on time-procedure analysis and calculating to obtain an acceleration response spectrum of the actual measurement walking loading; (3) classifying with testers as objects, performing statics and fitting with an external envelope line of a tester response spectrum serving as a representative curve and constructing a complete piecewise function expression for the design response spectrum; (4) calculating dynamic response of every order vibration mode of the floor structure under the walking loading, combining the dynamic responses of the orders through a square and square root method and finally obtaining the floor dynamic response. Compared with the prior art, the design response spectrum based floor structure dynamic response testing method under the walking loading can accurately estimate the acceleration response of the floor structure under the walking loading.

The invention discloses an O-shaped rubber seal ring service life prediction method based on multivariate sample differences. The O-shaped rubber seal ring service life prediction method comprises the specific steps that a multivariate nonlinear Wiener process degradation model of an O-shaped rubber seal ring is established; parameter variable function models are established, including data statistics and analysis and the function relation of parameters and stresses; a reliability service life calculation model is established; unknown parameters are calculated; the storage life of the O-shaped rubber seal ring is predicted under normal temperature and stress. The differences of sample individuals of O-shaped rubber seal rings are considered, mean values and standard deviations of drift coefficients, diffusion coefficients and Copulas parameters in the Wiener process are processed into variables, and the variables and an acceleration stress form a function relation, so that final prediction results are more in line with the actual engineering situation and are more accurate.

According to an indoor three-dimensional point cloud automatic registration method for pole extraction, on the premise of avoiding network construction and normal direction estimation of point cloud data, automatic registration of multi-station ground laser scanning point cloud data in an indoor scene of a building is achieved, and the method mainly comprises two parts of pole extraction and point cloud registration. The method is analyzed and verified by using real indoor point cloud data of a building, registration parameter calculation is performed on multiple groups of point cloud data, a registration result is compared with a result calculated through a manual target selection mode, and the precision and reliability of the method are further verified. According to the point cloud automatic registration method based on pole extraction provided by the invention, the reliability and the precision meet the working requirements, the target does not need to be manually arranged, the parameter setting is simple, and the automation degree is high.

The invention discloses a method for realtime online verification of a complex traffic control algorithm. According to the method, a traffic simulation software module, a database module and an algorithm implementation and evaluation module are provided, traffic state information can be acquired in real time and be provided to photo-realistic traffic control equipment under the condition of simulation, a traffic control scheme is generated by the photo-realistic traffic control equipment according to a verified algorithm and is applied to a simulation environment again, and realtime online verification is performed on the complex traffic control algorithm. Compared with the prior art, the method can be used for performing realtime online simulation verification on the complex traffic control algorithm, so guarantee is provided for the safe and effective application of the complex traffic control algorithm in reality; meanwhile, a method for online algorithm optimization is provided for algorithm researchers, and a practical and effective way is provided for future research work.

The invention relates to a floor system vibration response computing method under jumping loads. The floor system vibration response computing method under the jumping loads includes the steps that (1) a large number of single jumping load curves are collected to form an actually measured jumping load data base; (2) actually measured jumping load data are normalized and then are input into a standard excitation system for time-procedure analysis, and an acceleration response spectrum of the actually measured jumping loads is obtained through computation; (3) classification is carried out with testers as objects, statistics and fitting are carried out with an outer envelope line of a tester response spectrum as a representative curve, and an integral piecewise function expression of a design response spectrum is built; (4), a power response of each order of vibration mode of a floor system structure under the jumping loads is computed through the design response spectrum, the power responses of all orders are combined according to an SRSS method, and floor system power responses are finally obtained. Compared with the prior art, the floor system vibration response computing method can estimate the acceleration response of the floor system structure under the jumping loads rapidly and accurately.

The invention discloses a sensitive probe as well as a preparation method and a method for detecting salmonella enteritidis by virtue of the sensitive probe, relates to a probe, a preparation method and application of the probe, and aims to solve the problems of high cost, instability, high deactivation rate of an antibody and poor sensitivity of an existing probe. The sensitive probe is prepared from antibiotics and a signal carrier. The preparation method comprises the following steps: 1, preparing yellowish-brown emulsion; 2, preparing a carboxylated immunomagnetic bead; 3, preparing an activated magnetic microsphere; 4, adding a resuspension solution for storage. The method for detecting the salmonella enteritidis by virtue of the sensitive probe comprises the following steps: 1, preparing an immunochromatographic test strip for the salmonella enteritidis; 2, mixing liquid to be detected and the sensitive probe for incubation, adding dropwise a mixed solution onto a sample pad of the immunochromatographic test strip for the salmonella enteritidis, performing reaction for 10 minutes, and reading a result. According to the sensitive probe, the preparation method and the detection method, only one antibody is struck on a nitrocellulose membrane for direct detection, so that the cost is greatly reduced, and simplicity and convenience are achieved; the sensitive probe, the preparation method and the detection method are applied to detection of the salmonella enteritidis.

The invention relates to a response spectrum method used for analyzing a floor system vibration response under the bounce load. The method comprises the steps that (1), a large number of curved lines of the single bounce load is connected to form an actual measured bounce load data base; (2), actual measured bounce load data are normalized and input into a standard excitation system, time-procedure analysis is carried out on the data, and an acceleration response spectrum of the actual measured bounce load is obtained through calculation of the data; (3), testers as objects are classified, outscourcing lines of response spectrums of the testers serve as the representative curved lines and are counted and fitted to construct integral piecewise function expressions of the designed response spectrums; (4), by means of the designed response spectrums, a value of a power response of each vibration mode of a floor system structure under the bounce load is calculated, combination is carried out according to the combined mode of a square method and a square root or complete square method, and finally the power response of the floor system is obtained. Compared with the prior art, the method can accurately and fast estimate the acceleration response of the floor system structure under the bounce load.

The invention discloses a determination method of sensibility of influence factors of anchoring force of soil anchors. The method comprises the steps that firstly, a soil-anchor anchoring-force prediction model is selected, and input quantities and output quantities of the prediction model are determined, wherein the influence factors of the anchoring force of the M soil anchors and the anchoring force of the soil anchors are used as the M input quantities and the M output quantities of the soil-anchor anchoring-force prediction model respectively; secondly, a training sample set is obtained, wherein in-situ test data of the N soil anchors are collected, and the in-situ test data of each soil anchor are used as one training sample; thirdly, the soil-anchor anchoring-force prediction model is built and trained; fourthly, a multilevel and multi-factor orthogonal test is carried out in the steps of inputting design parameters of the soil anchors, building an orthogonal table, obtaining samples of the orthogonal test, predicting the anchoring force, organizing predicted values of the anchoring force and determining the sensibility. The method has the simple steps, is reasonable in deign, convenient to implement and good in using effect, and can be used for easily, conveniently, rapidly and accurately completing a determining process of the sensibility of the influence factors of the anchoring force of the soil anchors.

The invention relates to a distributed power source configuration method considering dynamic path optimization of an active distribution system, comprising the following steps: 1) establishing a double-layer optimal configuration model of the distributed power source considering dynamic path optimization of the active distribution system; 2) according to the improved OFCMC method, the dynamic pathoptimization problem of the active distribution system is transformed into a static path optimization problem in which C representative load data are used as clustering centers; 3) the double-layer optimal configuration model of the distribute power source is solved to obtain the optimal configuration scheme. Compared with the prior art, the invention has the advantages of considering the operation dispatch factor, reasonable modeling, good applicability of the scheme and the like.

The invention discloses a mechanism time-variation reliability analysis method, which is applied to the field of mechanism time-variation reliability. For the problem that actual engineering reliability cannot be described completely and accurately in the prior art, effective diffusion points on upper and lower boundaries are solved through an envelope equation; uncertainty random information of non-normal distribution is adopted as a random variable input; kinematic error sample points corresponding to the diffusion points under the uncertainty random variable input are obtained; correlationof the kinematic error sample points corresponding to the diffusion points is described through a copula function; and multidimensional joint probability density functions corresponding to the diffusion points are built through a characteristic of multidimensional distribution function decomposition of a vine-copula function, so that a definite integral is solved for obtaining the time-variation reliability. Therefore, a conventional normal distribution hypothesis is popularized as the non-normal distribution; and the method has relatively high practical values and relatively strong engineering significance.

The invention discloses a dangerous goods transportation path planning method under an uncertain time-varying road network. The method comprises the following steps of establishing a dangerous goods transportation planning model considering time-varying characteristics and uncertainty of road conditions and population density information, introducing time-varying fuzzy variables into the model to describe the influence of the population density on the transportation risk, and meanwhile, considering the influence of the road network real-time traffic condition on the transportation risk, and introducing time-dependent equivalent road length into the model to describe the real-time road condition, performing ambiguity resolution by using an opportunity constraint planning method, and finally, solving a simulation result by applying a PSO algorithm, and verifying the applicability of the model by analyzing a numerical instance solving result. According to the method, a path planning scheme with relatively low road risk can be obtained, and compared with a traditional deterministic model, the method has better applicability.

The invention provides an initial value calculation method suitable for large-scale data load flow calculation. The method comprises the following steps: (1) presetting a balance node; (2) carrying out load flow calculation simulation; (3) judging whether the result is convergent, carrying out the step 4 if the result is convergent, otherwise, the process is over; (4) changing the preset balance node into an ancestor node; and (5) carrying out load flow calculation. The initial value calculation method suitable for large-scale data load flow calculation, provided by the invention, analyzes the reasons of load flow calculation problems of a large-scale power network and improves the Newton method on the base of the conventional calculation method according the condition of actual demands so as to solve the problem that the data load flow calculation of the large-scale power network is not convergent.

The invention discloses a rigid-flexible coupling multi-motor system. The rigid-flexible coupling multi-motor system comprises an upper computer, a main controller, a first motor driver, a first torque sensor, a first motor, a first encoder, a second motor, a second encoder, a second torque sensor, a second motor driver, a second driving roller, a tension sensor, a belt, a first driving roller, arigid coupling, a third torque sensor, a third motor, a third encoder, a third motor driver, a connecting shaft and a signal wire, wherein the two motors are rigidly and coaxially connected to achieverigid coupling between the two motors; the two motors are connected by adopting belts at two ends, so that the rigid-flexible coupling connection between the two motors is achieved; and the physicalexperiment research of the coaxial connection of the belt conveyor and the double motors driven at two ends is achieved at the same time.

The invention discloses an intelligent elevator model selection system based on a BIM model. The system comprises a building three-dimensional visualization module, an elevator three-dimensional visualization module, a data processing module and a model selection output module, and the building three-dimensional visualization module is used for generating a BIM model of a building or a structure according to a design drawing of the building or the structure to be installed of a selected elevator; the elevator three-dimensional visualization module is used for generating a three-dimensional visualization model of the elevator according to the selected design drawing of the elevator; the data processing module is used for carrying out matching processing on the BIM model of the building or the structure and the selected elevator three-dimensional visualization model, judging whether the selected elevator is installed on the building or the structure to meet the regulations of technical laws and regulations and standards or not, and obtaining a model selection conclusion; and the model selection output module is used for outputting a model selection conclusion. The system can visuallyverify the adaptability of the specification and model of the selected elevator to the building, and reduces the delivery delay caused by elevator engineering and the economic loss caused by rectification.

The invention discloses a flexible mechanical arm experiment system and a control method. The system comprises a main controller unit, a host, a flexible mechanical arm controlled main body and a vibration signal acquisition module. According to the invention, the operation is simple; effects are obvious; by combining computer simulation and real-time control, suitability and practicability of design of the control system can be effectively verified; the vibration signals are displayed graphically, and parameters in the algorithm can be modified and controlled online; signals of the flexible mechanical arm can be measured online and the system has anti-interference ability and a self-protection function; all signals acquired by the main controller can be uploaded and stored in a local disk, so it is convenient for an experimenter to carry out data analysis and post processing on the experiment results; and problems of poor suitability and complex operation of the flexible mechanical arm experiment system are solved.

The invention relates to a lower visual angle adjustable mechanism for radar seeker hanging flight, and belongs to the technical field of space flight and aviation. The mechanism is composed of an extension hanging frame and an installation platform with an adjustable lower visual angle. The extension hanging frame is composed of an upper truss, an extension truss and a lower truss, and the three trusses are welded and formed and then connected through bolts, so that disassembly, assembly and transportation are convenient. The installation platform is composed of two front supporting lugs, three rear supporting lugs, a rotating shaft, two sliding blocks and an installation plate. Screw fixing holes are formed in the two front support lugs at an interval of 5 degrees, so that a lower visual angle can be adjusted at an interval of 5 degrees in a range of 0-minus 30 degrees, and the mounting plate is used for mounting a to-be-tested seeker, a test instrument or monitoring equipment and other parts to be tested.

The invention provides a retaining wall earthquake soil pressure time history calculation method based on an energy dissipation principle. The method comprises the steps of: establishing a calculationmodel to respectively compute the earthquake inertia force and gravity of a sliding soil wedge body and supporting force of the wall to the sliding soil wedge body; based on an energy dissipation principle, respectively calculating to obtain the power and the internal energy dissipation of the external force of the sliding soil wedge body; establishing a balance equation based on an energy conservation principle; calculating and obtaining the maximum time history of the retaining force of the corresponding retaining wall to the sliding soil wedge body under the continuous action of the earthquake, namely the solved earthquake soil pressure time history; and performing drawing to obtain a seismic soil pressure time-history curve. According to the invention, a slip crack surface is supposedto be an oblique straight line in traditional earthquake soil pressure calculation, an earthquake action is simplified into an inertia force with constant magnitude and invariable direction, the influence of earthquake waves on earthquake soil pressure when the earthquake waves are transmitted in a slope body is not considered, most of the obtained earthquake soil pressure is a constant value anddistorted, and a series of problems that how the earthquake soil pressure changes along with time cannot be obtained are solved.