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145 results about "Test order" patented technology

Numerical control machine tool thermal error real-time compensation modeling method based on time series algorithm

The invention relates to a numerical control machine tool thermal error real-time compensation modeling method based on a time series algorithm, which belongs to the technical field of precision machining. The method comprises the steps of (1) carrying out data zero mean pretreatment, namely employing an inverted sequence test method and a kurtosis and skewness test method to judge the stationarity and the normality of the data; (2) using an autocorrelation function, a partial correlation function, and the censored results as judgment criteria to carry out the pattern recognition of a thermal error mathematical model; (3) employing a least square estimation method or a long autoregressive residual calculating method to realize the parameter estimation of the thermal error mathematical model; (4) determining the order of the thermal error mathematical model, namely employing a judgment method that combines an AIC order determination criterion, an F test order determination criterion, and a whiteness test order determination criterion to realize the order determination of the thermal error mathematical model; (5) and carrying out integration processing of synthesizing judgment conditions, namely constructing a complete forecasting mathematical model formula. The modeling method provided by the invention has the advantages that less hardware is required, the applicability is wide, and the established model has high prediction precision and reliability.
Owner:上海睿涛信息科技有限公司

Performance test system, method and device for electronic equipment to be tested

The embodiment of the invention provides a performance test system, method and device for electronic equipment to be tested. The system comprises a PC, a test instrument and multiple sets of electronic equipment to be tested. The PC respectively establishes communication with all the electronic equipment to be tested and determines the test orders of all the electronic equipment to be tested through a network card connected with all the electronic equipment to be tested, wherein one test order corresponds to one set of electronic equipment to be tested; by means of the network card connected with the test instrument, the PC controls the test instrument to target the electronic equipment to be tested corresponding to all the test orders and to carry out tests on the performance of the electronic equipment to be tested corresponding to all the test orders through test ports connected with all the electronic equipment to be tested corresponding to all the test orders in all test order phases according to the test orders to complete the performance tests of all the electronic equipment to be tested and to obtain the test results of all the electronic equipment to be tested. The performance test system, method and device for the electronic equipment to be tested improve the efficiency of the performance tests of the electronic equipment to be tested.
Owner:SHENZHEN GONGJIN ELECTRONICS CO LTD

Automatic optical detection system based on CPU+GPU+FPGA architecture

The invention discloses an automatic optical detection system based on a CPU+GPU+FPGA architecture. The automatic optical detection system comprises an image storage unit, an image calculation unit and an image acquisition unit, wherein the image storage unit is provided with a first communication interface and a second communication interface, the image calculation unit is provided with a first optical-fiber interface, a second optical-fiber interface, a third optical-fiber interface and a fourth optical-fiber interface, and the image acquisition unit is provided with a third communication interface and a camera interface; and the image calculation unit receives configuration parameters and test orders transmitted by the image storage unit and transmits a test result to the image storageunit by virtue of the first optical-fiber interface, receives data of the image acquisition unit and transmits the configuration parameters and the test orders to the image acquisition unit by virtueof the second optical-fiber interface, controls the generation of a point-screen signal by virtue of the third optical-fiber interface, and controls an IO light source by virtue of the fourth optical-fiber interface. The automatic optical detection system based on the CPU+GPU+FPGA architecture has the advantages of simple structure, low cost, good stability, good coordination capacity, high calculation processing capacity and the like.
Owner:WUHAN JINGCE ELECTRONICS GRP CO LTD

500kV line relay protection device detection method and system

The invention relates to a 500kV line relay protection device detection method and system. The method comprises the following steps: receiving a test order of to-be-detected relay protection devices and a test parameter and a standard fixed value of each preset logic protection test case, which are input by a user; acquiring sampling precision of the current to-be-detected relay protection device; generating a test sequence according to the logic protection test case and the test parameter corresponding to the current to-be-detected relay protection device when the sampling precision is greater than a preset precision threshold value; outputting the test sequence to the to-be-detected relay protection device, receiving an action message returned by the to-be-detected relay protection device, and generating detection result information in a preset format of the current to-be-detected relay protection device; generating a detection result of a next relay protection device according to the test order until the detection results of all the to-be-detected relay protection devices are generated. According to the method and the system, the detection accuracy can be effectively improved, the detection steps of testers can be saved, and the time required for detecting 500kV line relay protection devices is shortened.
Owner:FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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