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112results about How to "Verify performance" patented technology

Debugging method for +/- 800 kV ultra-high voltage direct-current transmission project system

The invention relates to a debugging method for a +/- 800 kV ultra-high voltage direct-current transmission project system. The system comprises convertor stations at two ends and a direct-current transmission line. The debugging method for the +/- 800 kV ultra-high voltage direct-current transmission project system comprises the following steps that (I) the +/- 800 kV ultra-high voltage direct-current transmission project system is subjected to calculation and analysis; (II) a debugging scheme for the +/- 800 kV ultra-high voltage direct-current transmission project system is formed; (III) a debugging plan for the +/- 800 kV ultra-high voltage direct-current transmission project system is made; (IV) the +/- 800 kV ultra-high voltage direct-current transmission project system is subjected to a field debugging test; (V) the +/- 800 kV ultra-high voltage direct-current transmission project system is subjected to a pilot run; (VI) the +/- 800 kV ultra-high voltage direct-current transmission project system is subjected to a debugging summary. According to the debugging method for the +/- 800 kV ultra-high voltage direct-current transmission project system, a single current converter and a monopolar and bipolar system debugging test are combined for the first time, therefore, the efficiency of a system debugging test is improved, the system debugging speed is increased, good conditions are created for finishing system debugging in advance, and experience and reference are provided for the debugging of a direct-current transmission project system in future.
Owner:STATE GRID CORP OF CHINA +1

Gene sequencing data simulation system and method for simulating crowd background information

The invention discloses a gene sequencing data simulation system and method for simulating crowd background information. A target capture area file, sequencing depth, seven types of mutation, frequencies of mutation occurrence, and coordinates of mutation on a reference genome are input, the number of templates is determined based on the sequencing depth, the probability distribution of the corresponding template length is generated by using an acceptance rejection algorithm, each template is traversed, the number of the templates which have been traversed is determined, when not all the templates are traversed by the algorithm, copy number mutation simulation, single nucleotide site mutation simulation, gene fusion simulation, tandem repeat simulation, inversion mutation simulation, insertion fragment simulation and deletion fragment simulation are performed on each of the extracted length templates, and reads are generated and written into a sequencing file; when all the templates are traversed, the generation of the sequencing file is completed; read comparison is performed, the simulated sequencing file and a comparison file thereof are output, and the simulation is completed.The gene sequencing data simulation system and method for simulating crowd background information can be used for easily and quickly obtaining a sample containing specific mutation.
Owner:XI AN JIAOTONG UNIV

Small unmanned rotorcraft gyroscope structure test system based on six-dimensional force sensor

ActiveCN108645425AAccurate performance of flight attitudeComprehensive measurement dataMeasurement devicesGyroscopeEngineering
The invention discloses a small unmanned-rotorcraft gyroscope structure test system based on a six-dimensional force sensor. The small unmanned-rotorcraft gyroscope structure test system comprises: athree-degree-of-freedom motion test platform based on a triaxial gyroscope structure, which is used for testing three-degree-of-freedom arbitrary motions of pitching, rolling and yawing of a small unmanned craft; an unmanned craft state measurement module based on a multi-source sensor combination, which comprises a six-dimensional force sensor, an inertial attitude sensor and an unmanned craft external sensor; a test platform ground station control module, which comprises a flight controller and a test platform controller and is used for operating a plurality of motion modes of the unmanned craft and an observation parameter model of a measurement platform to realize motion measurement, state perception, data transmission and PC-side visualization for the unmanned craft; and a multi-source data fusion and analysis principle model. The small unmanned-rotorcraft gyroscope structure test system provided by the invention can meet the demand for the functions of three-degree-of-freedom motion state estimation and indoor training of a tiny unmanned rotorcraft, and realizes flight attitude estimation, vibration analysis, actual motion display and indoor flight training of the unmanned craft.
Owner:SOUTHEAST UNIV

Pneumatic performance testing method as well as pneumatic performance testing device

The invention discloses a pneumatic performance testing method as well as a pneumatic performance testing device. The method comprises the following steps of: simulating and generating a primary air stream and a scavenging stream in a primary air stream flow passage and a scavenging stream flow passage of a particle separator; measuring the total pressure value Pt1 of an inlet cross section of an air intake duct of the particle separator; then regulating the primary air stream outlet flow rate Q1 and the scavenging stream outlet flow rate Q2 of the particle separator respectively so as to enable the SCR to correspond to the preset value, wherein the SCR is equal to Q2 / Q1; measuring the outlet cross section total pressure value Pt2 in the primary air stream flow passage of the particle separator; and calculating the air intake total pressure loss value delta P. The device comprises the air intake duct, the primary air stream flow passage and the scavenging stream flow passage as well as air pumping fans arranged on the flow passages as well as a pressure measuring unit, a flow rate measuring unit and a flow rate regulating unit. The method and the device provided by the invention provide a quantization means for evaluating performances of the particle separator, and whether the performances of the particle separator correspond to the whole machine performance index of an engine can be tested conveniently.
Owner:CHINA AVIATION POWER MACHINE INST

General portable satellite power supply and distribution system equivalent device

The invention provides a general portable satellite power supply and distribution system equivalent device. The equivalent device comprises a machine case, a machine case cover, a touch screen, an ARM board, a simulation board card, an adapting board card, an SD card, an aviation plug adapting cable, an interface expanding board, an internal battery, a power plug and a power adaptor. The equivalent device generates a control command through the touch screen to transmit the control command to the ARM board card, the ARM board card generates an equivalent configuration command, the simulation board card simulates interfaces and functions of a satellite power supply and distribution system, and a ground power supply and distribution test device generates an output signal and transmits the output signal to the ARM board. The ARM board judges whether the ground power supply and distribution test device works normally or not, the interface expanding board is connected with the adapting board card, an external power source is connected with the power plug through the power adaptor, and the internal battery and the external power source back up each other. By means of the general portable satellite power supply and distribution system equivalent device, generalization, miniaturization and digitization of the satellite power supply and distribution system equivalent device are achieved, the design concept of the general portable tool provides a train of thought for future ground test device research and development.
Owner:AEROSPACE DONGFANGHONG SATELLITE

Closed circulating compressor test bench with helium as working medium

The invention relates to a compressor test bench, in particular to a closed circulating compressor test bench with helium as a working medium. A motor is installed on a base bottom frame, the motor isconnected with an input shaft of a gearbox through a diaphragm coupling, an output shaft of the gearbox is connected with a torque measuring instrument, and the torque measuring instrument is connected with a test compressor. The test compressor, corrugated pipe expansion joints, a flow stabilization section, a flow stabilization box, a middle section, a heat exchanger and an exhaust section areconnected in sequence. An exiting surge pipeline is connected with the middle section and the exhaust section and provided with an exiting surge valve. The middle section is provided with a valve. Thegearbox is connected with a lubricating oil station and supplies oil through the lubricating oil station. The flow stabilization box is connected with a diaphragm compressor and a vacuum pump. A helium storage tank is connected with the diaphragm compressor and the middle section. The performance testing problem of a domestic compressor with helium as a working medium is solved. The structural design is reasonable, energy is saved, and the closed circulating compressor test bench is easily applied and popularized on a large scale.
Owner:HARBIN GUANGHAN GAS TURBINE

Electronic cochlear in-vitro debugging platform based on local area network (LAN)

The invention discloses an electronic cochlear debugging platform based on a local area network (LAN), and belongs to the technical field of electronic cochlear implantation. The electronic cochlear debugging platform is characterized by comprising person computer (PC) end electronic cochlear algorithm experimental platform software, an embedded processor module, an audio module, a modulation and power amplification module and a wireless transmitting coil. The PC end electronic cochlear algorithm experimental platform software is mainly used for controlling an electronic cochlear working mode and working parameters and carrying out data communication with the embedded processor module in a form of LAN communication; the embedded processor module comprises a low power consumption dual-core processor OMAP-L137 containing a digital signal processor (DSP) and an accumulator read-in module (ARM) and a protective circuit; the audio unit comprises an audio decoder-coder, a sound acquisition interface connected with a microphone, and an earphone output interface; the modulation and power amplification module comprises a baseband signal generating circuit, an amplifying and filtering circuit, a modulation circuit and a power amplifying circuit; and the wireless transmitting coil is mainly used for being coupled with an electronic cochlear implant and transmitting data and energy. The electronic cochlear debugging platform can be used for development and research of parameter debugging and new algorithms.
Owner:TSINGHUA UNIV

Performance detection system and method for VDSL terminal with double-frequency wireless routing performance

The invention provides a performance detection system and method for a VDSL terminal with double-frequency wireless routing performance. The system comprises the VDSL terminal, an AC stabilized-voltage power supply, a temperature and humidity regulator, an SIP voice server, a first telephone, a second telephone, a first computer, a second computer, a third computer, a fourth computer, a VDSL local terminal and a traffic generator. The SIP voice server, the first telephone and the second telephone are used for detecting the voice performance of the VDSL terminal. The traffic generator and the VDSL local terminal are used for detecting the wired performance of the VDSL terminal. The first computer and the third computer are used for detecting the 2.4G wireless performance of the VDSL terminal. The second computer and the fourth computer are used for detecting the 5G wireless performance of the VDSL terminal. By means of the performance detection system and method, the heat dissipation performance, the environment stability, the wired performance, the voice performance, the 2.4G wireless performance and the 5G wireless performance of the VDSL terminal with the double-frequency wireless performance can be detected simultaneously.
Owner:PHICOMM (SHANGHAI) CO LTD

Simulated data generation method and system for distributed POS (Position and Orientation System) transfer alignment

The invention discloses a simulated data generation method and system for distributed POS (Position and Orientation System) transfer alignment. According to the method and the system, the method comprises the following steps: setting distributed POS device parameters, track parameters and flexural deflection parameters, and generating accurate motion parameters, angular velocity and specific forcedata of the body at a mounting point of a main IMU (Inertial Measurement Unit); considering a misalignment angle of the main IMU, and generating the motion parameter of the main IMU, gyroscope data and accelerometer data. Meanwhile, a wing flexure deflection model is established from an angle of elastic mechanics according to the set flexural deflection parameters, the influences of the wing flexure deflection on positions and speeds of sub-IMUs in three axis directions of a body coordinate system are considered so as to generate the flexural deflection angular data at the mounting point of the main IMU and lever arm deflection data between the main and sub-IMUs, and the accurate motion parameter of the sub-IMUs, gyroscope data and accelerometer data are further generated. The method andsystem disclosed by the invention contribute to improving the accuracy for evaluating the performance of a distributed POS transfer alignment algorithm.
Owner:BEIHANG UNIV

Lip seal test experiment table

The invention relates to a lip seal test experiment table, which comprises a T-shaped groove platform, wherein the T-shaped groove platform is provided with an alternating-current motor, and the alternating-current motor is fixedly provided with a shaft sleeve. An oil chamber is installed on the shaft sleeve and is connected with a static torque sensor through a key, and the right end of the static torque sensor is put into a connecting flange through key connection. An oil spur is sheathed onto the shaft sleeve, and the right side of the shaft sleeve is provided with a plastic end cover. An oil limiting chamber is fixedly arranged on the T-shaped groove platform through bolt connection, and the bottom of the oil limiting chamber is provided with an oil leak hole. A lip-shaped seal ring is installed into the oil chamber. The lip seal test experiment table can inspect the function of the lip-shaped seal ring and the feasibility and the reliability of key components under simulation of the actual condition, and a seal performance test of the seal ring under the working condition is realized. A research for expanding the test range of the inner diameter of the seal ring is realized, and a research of the disassembly process and method of the shaft sleeve is realized. A research of the influence of temperature on the seal effect is realized, and the lip seal test experiment table mainly measures the temperature change in a contact area of the shaft sleeve and the seal ring and an oil supply chamber. The lip seal test experiment table can conduct experiments to a plurality of tested seal rings at the same time.
Owner:TSINGHUA UNIV +1

Pressure-maintaining maintenance seal experiment table

The invention discloses a pressure-maintaining maintenance seal experiment table which is a uniform performance test experiment table developed for checking pressure-maintaining maintenance seal. The pressure-maintaining maintenance seal experiment table comprises an experiment table body, a cooling water system, a high-pressure air source system, a heating system, a temperature measuring system and a bolt pull force measuring system. Under the condition of simulating an actual working condition, the pressure-maintaining maintenance seal experiment table is used for checking the pressure-maintaining maintenance seal function and the feasibility and the reliability of key parts, and realizes a seal performance test under the working state of a primary maintenance seal, a seal performance test after a secondary maintenance seal is jointed for multiple times, cooling capacity analysis of a cooing sleeve, research of a treatment method for residual water in a maintenance seal structure after a cover plate and a cooling sleeve are dismantled, research of a dismantling process and method of a gland bolt of the primary maintenance seal when a bottom chamber is in a high-pressure state, influence research of temperature (mainly measurement of a main shaft temperature, a temperature in a high-pressure cavity, a temperature of a low-pressure cavity and a temperature change along the axial direction) on each seal, and influence of main shaft deflection on the performance of the secondary maintenance seal.
Owner:TSINGHUA UNIV
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