43results about How to "Implement synchronous testing" patented technology

The invention discloses a device for synchronously testing a reciprocating type friction power generation output property and a friction coefficient. A to-be-tested upper friction pair is arranged atthe front end, which is connected with a cantilever beam, of a cantilever beam supporting rack; a strain gage is arranged on the cantilever beam; a lower friction pair is arranged on a moving block ifa magnetic shaft linear motor and is positioned under the upper friction pair; the lower friction pair which is driven by the magnetic shaft linear motor to linearly move in a reciprocating manner relative to the static upper friction pair; current and voltage signals of friction power generation are output to a control and test computer; and meanwhile, the strain gage synchronously outputs the friction signals of the upper friction pair and the lower friction pair to the control and test computer. Because the control and test computer simultaneously acquires the current and voltage signals generated by friction power generation of the upper friction pair and the lower friction pair and friction signals, synchronous test on the friction power generation output property and the friction coefficient is realized; influence of interface friction behaviors to the friction power generation output property is discovered favorably; and the mechanism of action of the interface friction behaviors to an electric output property is facilitated.

The invention discloses a maneuverability hydrodynamic testing device and a testing method of a hydrojet propelled ship model. The testing device comprises planar motion mechanism, wherein the planarmotion mechanism is fixed on a pool trailer and used for testing a hull hydrodynamic force of the hydrojet propelled ship model; the hydrojet propelled ship model comprises a bare hull model, hydrojetpropulsion devices, a hydrojet propulsion device control system, dynamic testers and a parallel acquisition system; the hydrojet propulsion devices are symmetrically arranged at the rear part of thebare hull model and used for providing a propulsion force to the bare hull model; the hydrojet propulsion device control system is connected with the hydrojet propulsion devices; the dynamic testers are arranged at the front parts of the hydrojet propulsion devices and used for measuring rotating speeds, propulsion forces and torques of propeller shafts of the hydrojet propulsion devices; and theparallel acquisition system is connected with the dynamic tester and used for acquiring the rotating speeds, the propulsion forces, the torques and the hull hydrodynamic force. The device is concise in structure; components are divided clearly; the testing method is reasonable; and a hydrodynamic derivative of the hydrojet propelled ship model by the action of certain water flow jet can be obtained accurately.

The invention provides a millimeter wave free oscillation source automatic test system and method. The system at least comprises a millimeter wave free oscillation source to be tested, a direct current voltage source connected with the millimeter wave free oscillation source to be tested, a directional coupler with an input port connected onto the millimeter wave free oscillation source to be measured, an attenuator connected onto a coupling output port of the directional coupler, a mixer connected with the attenuator, a frequency analyzer connected onto the mixer, a power sensor connected onto a direct through output port of the directional coupler and a power meter connected onto the power sensor. Synchronous test of multiple performance parameters of the millimeter wave free oscillation source can be achieved through single connection, test data can be stored synchronously to facilitate follow-up processing, and automatic test of output frequency, output power and direct current power consumption of the millimeter wave free oscillation source in full band can be achieved.

The invention belongs to the field of tests of an aerospace servo valve and specifically relates to a dynamic loading device for a dynamic pressure feedback test of a servo valve. The device comprises a dynamic loading cylinder, a displacement sensor, a speed sensor, a pressure sensor, a loading servo valve, the to-be-tested servo valve and a dynamic pressure feedback testing instrument, wherein a piston rod is disposed in the dynamic loading cylinder; a piston is disposed in the piston rod; and the piston rod, the piston and the inner wall of the dynamic loading cylinder form four chambers. The device provided by the invention is characterized in that the dynamic loading cylinder with the four chambers is designed; the speed sensor, the displacement sensor and the pressure sensor are separately installed on the four chambers of the cylinder body, so that a load pressure difference loading function and a state detection function can be realized simultaneously; and closed-loop control of servo loading of the dynamic hydraulic cylinder can be used to keep a load pressure difference stable, efficiency and accuracy of the dynamic pressure feedback test are increased, and production of the dynamic pressure feedback servo valve is guaranteed.

The invention relates to a program file running method and device, a terminal and a storage medium, and belongs to the technical field of computers. The method comprises the steps of obtaining a preset path; When the first program file of the application program is generated, sending a transmission instruction to the second terminal through communication connection with the second terminal, wherein the transmission instruction carries the first program file, and the transmission instruction is used for indicating to store the first program file in a preset storage space; And sending a runninginstruction to the second terminal through the communication connection, the running instruction being used for indicating the second terminal to run the first program file stored in the preset storage space. Interaction is carried out through communication connection established between the first terminal and the second terminal. The first program file can be stored in the preset storage space, the second terminal can be controlled to automatically run the first program file, technicians do not need to execute multi-step operation on the first terminal and the second terminal respectively, operation is simplified, and consumed manpower resources are reduced.

The invention discloses an in vitro performance evaluating system of a continuous blood sugar monitoring sensor. The in vitro performance evaluating system comprises a reagent storage unit (1), a sampling unit (2), a sample mixing unit (3), a sample distributing unit (4), a detecting unit (5), a control unit (6), and a CGM sensor evaluating instrument (7). The in vitro performance evaluating system is capable of analyzing and evaluating the in vitro performance including sensitivity, response speed, detection range, accuracy, continuous working service life, interference resistance, temperature association coefficient, oxygen dependence degree and other parameters of the continuous blood sugar monitoring sensor as well as the performance change of the to-be-monitored sensor in a continuous working state, and is capable of effectively detecting and evaluating the in vitro detection performance of the to-be-monitored sensor.

The invention discloses a stress test jig for a magnetic material. The stress test jig comprises a test base body, a test clamp and multiple test stop blocks, wherein the test clamp is mounted at the middle part of the test base body in a locking manner through a pin; at least one test point is arranged on each side of the test clamp; the multiple test stop blocks press against the magnetic material to fix the magnetic material on the test clamp; each test stop block is formed by stacking a trapezoid block and a triangular block, and test points are arranged on two sides of the trapezoid block and the sides of the triangular block; the test points on the test clamp and the test stop blocks are connected with the test base body through test lines. The stress test jig is reasonable in structural design; as the test points are arranged on the test clamp and the test stop blocks, synchronous test in multiple directions can be realized, and the test precision is high; furthermore, tests for multiple magnetic materials can be completed at one time; by distribution of multiple test stop block positions, the stress test jig can adapt to the test work for the the magnetic materials of different specifications, and is high in working efficiency and high in universality.

The invention provides a PC (Personal Computer) sound card testing method, which comprises the following steps: combining, by a server, a generated single-track to-be-tested character audio file, a single-track to-be-tested tone audio file and a single-track to-be-tested volume audio file into a multi-track to-be-tested audio file, and sending the multi-track to-be-tested audio file to a PC; receiving an audio test file under the conditions of different volumes and different timbres, which is obtained by sequentially carrying out splitting restoration, timbre volume information identification and single-track to-be-tested character audio file playing and recording through a PC (Personal Computer), and then splitting the audio test file; and comparing the character test information with the to-be-tested character information, the timbre test information with the to-be-tested timbre information and the volume test information with the to-be-tested volume information respectively. The invention further provides a PC sound card testing device and system; the accuracy and reliability of PC sound card testing can be improved, and the testing efficiency of the PC sound card under the conditions of different volumes and different timbres can be further improved.

The invention provides a joint motor torque coefficient and friction force synchronous test method and device for a robot. The method comprises the steps of calculating a driving torque analytical expression of a driving joint of the robot according to a kinetic model of the robot and structural parameters of the robot; inputting the stored experimental data into a driving moment analytical expression to obtain a forward moment and a reverse moment, and fitting the forward moment and the reverse moment with the driving current to obtain slopes and intercept of fitting linear functions at different experimental positions; obtaining a motor torque coefficient of a joint to be tested during forward and reverse movement by combining the reduction ratio of the joint to be tested, and obtaininga friction coefficient of the joint to be tested during forward and reverse movement by taking the intercept as a reverse number; and calculating the average value of the motor torque coefficients andthe friction coefficients at different experimental positions to obtain the target torque coefficient and the target friction coefficient of the joint to be tested during forward and reverse movement. Therefore, synchronous testing of the joint motor torque coefficient and the forward and reverse friction coefficient is realized, and the testing precision is improved.

The invention relates to the technical field of photocatalytic testing analysis, in particular to a multifunctional photocatalytic material performance testing device and testing method. The multifunctional photocatalytic material performance testing device comprises a gas distribution system, a photocatalytic reaction system, an analytical testing system and a gas treatment system; the gas distribution system comprises two or more gas paths, all the gas paths are connected with a constant flow pump, and the constant flow pump is connected with the photocatalytic reaction system and the analytical testing system separately through a conversion valve; the output end of the photocatalytic reaction system is connected with the analytical testing system and the gas treatment system separately.The multifunctional photocatalytic material performance testing device is flexible in structure, easy to manufacture and capable of achieving testing and evaluation of photocatalytic performance andageing-resistance performance of homogeneous materials, multi-type materials, engineering application materials and the like in a complicated pollution environment, the comprehensive performance of the photocatalytic materials are accurately and quickly represented, and thus research and application of the photocatalytic materials are boosted.

The invention relates to the technical field of finished product detection, in particular to a test tool for a low-voltage branch monitoring unit. The test tool comprises a base which is provided witha supporting plane; a linear driving member; a mounting base which is fixedly arranged at the linear output end of the linear driving part, wherein test terminals are fixedly arranged on the mountingbase, and the number and the arrangement mode of the test terminals are consistent with the number and the arrangement mode of terminal bases in the low-voltage branch monitoring unit; a back surfacelimiting part which is fixedly arranged on the base, is positioned beside the supporting plane, is spaced from the linear output end in the moving direction of the linear output end, and is used forbeing matched with the back surface, back to the terminal bases, in the low-voltage branch monitoring unit in a stopping manner; a side surface limiting part which is arranged beside the supporting plane and is used for being matched with the side surface, adjacent to the back surface, in the low-voltage branch monitoring unit in a stopping manner; wherein the back limiting part, the side limitingpart and the supporting plane are matched to position and place the low-voltage branch monitoring unit on the base.