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832 results about "Dynamic testing" patented technology

Dynamic testing (or dynamic analysis) is a term used in software engineering to describe the testing of the dynamic behavior of code. That is, dynamic analysis refers to the examination of the physical response from the system to variables that are not constant and change with time. In dynamic testing the software must actually be compiled and run. It involves working with the software, giving input values and checking if the output is as expected by executing specific test cases which can be done manually or with the use of an automated process. This is in contrast to static testing. Unit tests, integration tests, system tests and acceptance tests utilize dynamic testing. Usability tests involving a mock version made in paper or cardboard can be classified as static tests when taking into account that no program has been executed; or, as dynamic ones when considering the interaction between users and such mock version is effectively the most basic form of a prototype.

Three axis optical fibre gyroscope inertia measurement unit integral structure

The invention relates to an integral structure of a triaxial optical fiber gyro inertia measuring unit, which comprises a mounting skeleton, three fiber optic gyro scopes, three accelerometers, a light source, a circuit board and a vibration damper. The mounting skeleton adopts a hollow hexahedron frame structure, each group of mounting holes are symmetrically arranged, and mounting lug bosses are arranged on the positioning end surface of the mounting holes. Three fiber optic gyro scopes form mutual space and are orthogonally arranged on the outer surface of the mounting skeleton, the light source and the circuit board are respectively arranged on the outer surface of the mounting skeleton which is corresponding to the three fiber optic gyro scopes, the three accelerometers form the mutual space and are orthogonally arranged on the inner surface of the mounting skeleton which is corresponding to the three fiber optic gyro scopes and near the geometric center of the mounting skeleton, and the vibration damper is arranged on the outer surface of the mounting skeleton. The measuring unit has the advantages that the quality is light; the degree of deviation between the mass center of an inertia measuring unit and the geometric mounting center is very small; the dynamic testing precision is high; the temperature field distribution of the inertia measuring unit is beneficial for the temperature compensation and control of each component, and the like.
Owner:BEIHANG UNIV

Embedded software intelligent testing method based on Agent

The invention relates to an embedded software intelligent testing method based on Agent, which is an improved software testing method using a Linux system as an embedded operation system core, mainly comprising three Agent modules: a pre-processing Agent module, a program instrumentation Agent module and a dynamic test information analysis Agent module. The pre-processing Agent module comprises a lexical analysis Agent and a grammar analysis Agent that are used for generating a grammar tree structure of a source program; the program instrumentation Agent module comprises a grammar tree analysis Agent and an automatic instrumentation Agent that are mainly used for analyzing the grammar tree, finding out the key point of the source program, and automatically inserting probe functions in the source program so as to acquire the dynamic information during the operation of the program; and the dynamic test information analysis Agent module comprises a cover ratio analysis Agent and an inquiry Agent that are mainly used for testing the sentence and the branch cover ratio of the source program, and automatically inquiring the relevant conditions of the uncovered target in the source program when the cover ratio cannot satisfy the requirements. The invention can be applied to different programs simply and conveniently, thereby greatly improving the efficiency of the software automation test with strong commonality.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Rock deforming and cracking three-dimensional dynamic testing system based on fiber strain sensing

The invention relates to a rock deforming and cracking three-dimensional dynamic testing system based on fiber strain sensing, which comprises a testing piece, wherein the testing piece is laid with a fiber sensor encapsulated with a plurality of testing strains; the fiber sensor is connected with a signal demodulation processing device through a connecting fiber; and demodulated data signals can build three-dimensional testing data of the testing piece and can form a three-dimensional dynamic strain field of the testing piece after interpolation. The system can effectively lay out the fiber sensor inside and on the surface of the real rock testing piece under the pressure of a three-axis presser, enters the rock inside to detect the rock dynamic strain under the premise of not influencing the rock structure and the stress, and can really test the rock dynamic cracking process to obtain the crack initial and expended spatial positions inside the testing piece. The system continuously monitors the generation and expansion of tiny cracks inside brittle materials under the loading action in real time at the same time, and can be widely applied to researching cracking instability mechanisms of materials, such as rocks, concrete and the like.
Owner:SHANDONG UNIV

Automatic dynamic testing method for waking up of full-automatic driving train

ActiveCN105404272ARealize automatic dynamic test functionProgramme controlElectric testing/monitoringTraction systemEngineering
The invention relates to an automatic dynamic testing method for waking up of a full-automatic driving train. The method comprises: S1, a driving end is selected according to a preset sequence; S2, a VOBC makes an application to a ground area controller ZC to carry out dynamic testing; S3, after authorization, the VOBC outputs a forward leap instruction to an AOM; the AOM transmits the forward leap instruction to a current train; and the train executes dynamic testing equipment and a leap instruction feedback command is sent to the VOBC by a TCMS; S4, the VOBC outputs traction information with a preset time length and a preset dimension to the train; and after the speed of the train reaches the zero speed, the VOBC outputs a leap completion mark; S5, the VOBC outputs a backward leap command; and S6, the forward leap result and the backward leap result are normal, dynamic testing of the driving end is done successfully and changing to a driving end at the other side is carried out and the steps from S2 to S6 are repeated. According to the invention, a problem of energy wasting or equipment wearing due to manual operation negligence can be solved, thereby realizing reliable working of a traction system and a brake system of a to-be-detected train.
Owner:TRAFFIC CONTROL TECH CO LTD

Universal single event effect detecting method of memory circuit

InactiveCN103021469ASuitable for single event effect testingMeet different testing needsStatic storageMemory circuitsFile comparison
The invention provides a universal single event effect detecting method of a memory circuit. The universal single event effect detecting method comprises the following steps of (1) configuring a memory to be detected to be in a write state, and writing into a test vector; and then arranging the memory to be detected in a radiation environment; (2) if a dynamic test is conducted, configuring the memory to be detected to be in a read state, reading out data stored in each address unit and comparing the read-out data with the written-in data, using the quantity of address units with different comparing results as a total error count, and further analyzing a condition that each address unit generates 2-bit or more than 2-bit data flipping; and (3) if a static test is conducted, configuring the memory to be detected to be in a non-read non-write state; after irradiation particles accumulated in an irradiation process reach a standard, sequentially reading out data in each address unit and comparing with the written-in data; and using the quantity of the address units with the different comparing results as the total error count. In the irradiation process, working current of the memory to be detected can be monitored in real time. Latch is implemented when the working current exceeds 1.5 times of normal working current.
Owner:BEIJING MXTRONICS CORP +1

Testing method and apparatus for supporting state, dynamic balancing state and non-centering state of rotating machine

ActiveCN102252836AImprove and enhance the installationMachine part testingStatic/dynamic balance measurementVertical vibrationCoupling
The invention discloses a testing method and an apparatus for a supporting state, a dynamic balancing state and a non-centering state of a rotating machine. The testing apparatus comprises a machine 1, a machine 2, and a shaft coupling. The testing apparatus is characterized in that: the machine 1 is connected with the machine 2 through the shaft coupling; a horizontal vibration sensor X1 and a vertical vibration sensor Y1 are installed on a casing and an engine base of the machine 1, wherein the casing and the engine base are at the side close to the shaft coupling; a horizontal vibration sensor X2 and a vertical vibration sensor Y2 are installed on a casing and an engine base of the machine 2, wherein the casing and the engine base are at the side close to the shaft coupling; a speed detection sensor N and a supporting stiffness and non-centering dynamic tester 3 are installed on the machine 1 and the machine 2. According to the traditional static detection method, there is a bind area in which a supporting stiffness state and a centering state can not be identified on the dynamic condition of the machine, so that debugging can not be guided comprehensively and correctly; however, according to the testing method and the apparatus, the above-mentioned problem can be solved.
Owner:北京唐智科技发展有限公司

Train jump control method, dynamic testing method and jump benchmark parking method under FAM (Full Automatic Mode)

The invention provides a train jump control method, a dynamic testing method and a jump benchmark parking method under an FAM (Full Automatic Mode). The jump control method comprises the following steps: an ATP transmits a jump instruction to an ATO, delays for T1 and then synchronously transmits a direction instruction to the train and the ATO; the train receives the direction instruction, then finishes jump preparation and transmits an effective feedback of the direction instruction to the ATO; the ATO receives the direction instruction and the effective feedback, delays for T2 and transmits a traction instruction to a train traction system; the ATO delays for T3, then transmits an instruction carrying a preset traction level to the train traction system, enables the train traction system to output a traction force and enables the train to jump; after jump distance reaches preset distance, the traction instruction is ineffective, and the traction level returns to zero; the ATO delays for T4, then transmits a braking instruction carrying a preset braking level to a train braking system, enables the train braking system to output a braking force, and enables the train to slow down and stably stop; after the train stably stops, the ATO delays for T5, then transmits jump finishing information to the ATP, and enables the ATP to determine the finishing of the jump. Based on the jump control method of the train, a dynamic testing result is more accurate, and jump benchmark parking is more precise.
Owner:TRAFFIC CONTROL TECH CO LTD

Satellite in-orbit free boundary condition simulation device

ActiveCN103359300ARealize simulationImproving the Technical Level of Kinetic ExperimentsCosmonautic condition simulationsEarth observationButt joint
The invention discloses a satellite in-orbit free boundary condition simulation device. The satellite in-orbit free boundary condition simulation device mainly comprises a satellite butt joint plate, supporting springs, satellite balance adjusting devices, a limiting protecting device and a supporting plate, wherein the satellite butt joint plate at the upper portion of the device and the supporting plate at the lower portion of the device are correspondingly arranged according to the satellite mechanical structure and are generally of an annulus shape, the two ends of each supporting spring are fixedly connected to the annular portions between the satellite butt joint plate and the supporting plate respectively and evenly distributed around the annular portions so that a satellite can be elastically supported, the satellite balance adjusting devices which correspond to the supporting springs in number are fixedly arranged between the bottoms of the supporting springs and the supporting plate so that the supporting springs are supported to adjust inclination of the satellite and the simulation device caused by eccentricity of the satellite, and therefore the satellite is kept horizontal after being connected to the simulation device in a butt joint mode. According to the satellite in-orbit free boundary condition simulation device, the level of the satellite dynamics testing technique is improved, and requirements for verification of in-orbit dynamics characteristics and in-orbit micro-vibration environment tests in the process of developing satellites especially high-precision earth observation satellites are met.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG

Acquiring system eigenfunction and signal feature value method

A method of catching systematic eigenfunctions and signal eigenvalues under the condition of only response output available belongs to the parametric recognition technique in dynamic test field. The technique is a method of adopting cross spectral density functions of each response point instead of frequency response functions to perform time-frequency filtering and the parametric recognition of frequency domain, and includes the following steps: (1) carrying out analytic calculation of the cross spectral density functions of different metering signal of output points; (2) analyzing and calculating the nonorthogonal wavelets in the time-frequency domain according to the cross spectral calculating result; (3) inversing the fourier transformation to gain the time-frequency analyse coefficient; (4) adding a rectangular window to perform the time-frequency filtering; (5) calculating the cross spectrum of the output signal after filtering as the systematic function for recognition; (6) performing curvefitting to obtain the systematic parameter; the technique improves the recognition precision of the systematic parameters, precisely recognizes modal parameters, is simple and convenient, and is suitable for the dynamic analyses, the performance verification and the failure diagnosis of large civil engineering establishments such as large and complex mechanical equipments under operation status, high-rise buildings, bridges, etc.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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