9 results about "Sensitivity testing" patented technology

This application provides a Saber-based inverter simulation method, which includes: generating an initial simulation test circuit; performing time-domain simulation based on the initial simulation test circuit to obtain the total loss, switching loss, and conduction loss of the power device model; transforming the initial simulation test circuit to obtain a replacement simulation test circuit, and performing sensitivity testing on the obtained replacement simulation test circuit based on the total loss, switching loss, and conduction loss of the power device model to obtain the sensitivity of each initial curve; and adjusting the power device design based on the obtained total loss, switching loss, conduction loss of the power device model, and the sensitivity of each original curve. This method can guide the design of power devices and other parameters in the circuit, effectively improving R&D efficiency and quickly achieving the goals of improving inverter efficiency, reducing losses, and meeting system efficiency requirements.

The application discloses a kind of milligram level to sub-milligram level energetic material sensitivity test system and method, belong to material testing field.For the problem of large consumption of existing energetic material test sample and high error rate of result, the application provides a kind of milligram level to sub-milligram level energetic material sensitivity test system, including the pressure loading module of dynamic pressure applied to energetic sample, at least two different wavelengths of light are collected, and the common optical path module of different functional components in functional component module is separated to different wavelengths of light path, the functional component module of in-situ observation structure evolution and reaction phenomenon of energetic sample under pressure loading;Ensure the time synchronization of pressure loading module, common optical path module and functional component module when working Synchronous control module.The application realizes the precision measurement of milligram level to sub-milligram level energetic material sensitivity, and the test result is objective and has high repeatability, which provides a powerful means for rapid and safe evaluation and initiation mechanism research of new energetic material.

The present application relates to the technical field of safety light curtain calibration test, and specifically relates to a multi-channel safety light curtain synchronous calibration and sensitivity test method, which comprises the following steps: setting up a multi-channel safety light curtain, modulating a test signal and emitting an infrared light beam from a light emitter of each channel of the multi-channel safety light curtain, and obtaining a response signal of a light receiver of each channel; regarding an arbitrary channel as a target channel, performing time domain and frequency domain analysis on the test signal and the response signal, extracting a response delay parameter and a signal attenuation degree of the target channel, and then obtaining a time-frequency coefficient of the target channel in combination with the response delay parameter and the signal attenuation degree; obtaining running scene information of the multi-channel safety light curtain, obtaining a sensitivity threshold of the target channel through the time-frequency coefficient and the running scene information, and performing sensitivity calibration on the multi-channel safety light curtain based on the sensitivity threshold. The present application improves the calibration efficiency and test precision of the multi-channel safety light curtain.

The utility model relates to a detector sensitivity detection device convenient to replace gas cylinder relates to the technical field of detector sensitivity detection technique, especially is a kind of detector sensitivity detection device convenient to replace gas cylinder, it include: support part, detection part and connecting mechanism, detection part is installed on support part, when detection part senses detector, detection part sprays detection instrument, to detect the sensitivity of detector, connecting mechanism includes: connecting block and clamping block, connecting block is installed on detection part, clamping block is installed on support part, when connecting block is connected with clamping block, detection part is installed on support part, when connecting block is not connected with clamping block, detection part is detached from support part.The utility model is connected by the detachable connection mode of support part and detection part, can replace different detection part according to different types of detector, so, without equipping support part for each type of detector, reduce the use cost of whole detection device by reducing support part.

This invention pertains to the field of hydrogen fuel cells, specifically a test method for evaluating membrane electrode assemblies (MEAs) under simulated excessively humid conditions. This method involves setting the stack temperature to be 2–10°C lower than the inlet temperatures of hydrogen and air during polarization performance and humidity sensitivity testing of small-sized MEA single cells (where the stack temperature is T). S The intake temperature of hydrogen and air is T. IC and T IA That is, by using T S Adjusted to be T IC and T IA The temperature is lowered by 2 to 10°C, thus artificially creating an "over-humidified" phenomenon inside the battery, and the performance of the membrane electrode under over-humidified conditions is evaluated accordingly. Compared with the prior art, this invention can predict the performance stability of the membrane electrode under the "over-humidified" condition in a short stack through single-cell testing of small-sized membrane electrodes, fill the gap in the poor consistency between single-cell test results of small-sized membrane electrodes and test results of full-size membrane electrode stacks, and greatly reduce the research and development cost.

The application belongs to the technical field of touch performance analysis, and provides a touch performance analysis method and system suitable for touch display glass, which comprises the following steps: dividing the touch display glass in a grid form according to the same area to obtain a plurality of touch test areas, performing a plurality of touch performance tests on the touch test areas to evaluate the risk of accidental touch of the touch test areas, and identifying the high-risk area and the low-risk area of accidental touch in the touch test area; performing a plurality of sensitivity tests on the low-risk area of accidental touch to evaluate the touch sensitivity in the low-risk area of accidental touch, and identifying the low-sensitivity area in the low-risk area of accidental touch; and classifying the problem areas according to the similarity between the sensitivity deviation and the accidental touch rate deviation, adjusting the touch pressure interval for different clustering clusters, and finding the optimal pressure value by compatibility analysis.

This application relates to a micro-sample impact performance testing system, control method, equipment, and storage medium, comprising: a pre-impact parameter measurement component, a post-impact parameter measurement component, and a data processing component; the pre-impact parameter measurement component is used to acquire the angular position signal of the rotating motion device from the initial position to the impact position; the post-impact parameter measurement component is used to acquire the linear displacement signal of the displacement device from the impact position to the target position; the data processing component is used to analyze the pre-impact energy based on the angular position signal and the post-impact energy based on the linear displacement signal; and the impact performance test result of the micro-sample under test is obtained by analyzing the pre-impact energy and the post-impact energy. This application quantifies the energy of the micro-sample before and after the impact test through the pre-impact parameter measurement component and the post-impact parameter measurement component, and through real-time monitoring combined with online analysis, enables high-precision and high-sensitivity testing of micro-samples.

The application relates to a kind of optical module sensitivity test method and system.The method comprises: converting optical signal into corresponding reference electrical signal when receiving optical signal, and attenuating and amplifying reference electrical signal to obtain attenuated and amplified electrical signal when receiving attenuation control signal, determining corresponding first sensitivity based on reference electrical signal, and determining corresponding second sensitivity based on attenuated and amplified electrical signal, since attenuated and amplified electrical signal is signal after signal attenuation processing, so attenuated and amplified electrical signal has less interference signal compared with reference electrical signal, so the precision of second sensitivity obtained based on attenuated and amplified electrical signal is higher than that of first sensitivity, the first sensitivity obtained after different signal processing, second sensitivity and preset sensitivity range are compared, so as to determine the final sensitivity test result, to improve the sensitivity test quality.

The application provides a kind of magnetic suspension bearing stability test method and test device, the test method includes: real-time acquisition is output by excitation signal generator excitation input signal and error voltage signal, and error voltage signal is input into target magnetic suspension bearing system, and frequency response output signal is obtained;Using generalized integrator is filtered respectively to excitation input signal and frequency response output signal extraction, and excitation response signal is obtained, and the target sensitivity test result of target magnetic suspension bearing system is determined;By analog weather approximation model based on multiple weather test parameter groups and the system parameters of target magnetic suspension bearing system, sensitivity boundary result is output, and the target sensitivity test result is compared with sensitivity boundary result, and the stability test result of target magnetic suspension bearing system is determined.Through the above method, the accuracy, stability and efficiency of the stability test of magnetic suspension bearing are improved while the computing resources are saved.