30results about How to "Comprehensive performance evaluation" patented technology

The invention provides a mud cake performance comprehensive evaluation method, which comprises the following steps: (1) placing a loaded mud cake and an unloaded mud cake on a rotating tray; (2) applying a pressure onto the loaded mud cake, and recording the thickness and quality of the loaded mud cake and the unloaded mud cake respectively; (3) starting a linked rotating tray, and increasing therotation speed gradually; (4) recording an unloaded throwing rotation speed; (5) increasing the rotation speed till the loaded mud cake is thrown out from the tray, stopping the rotating tray, and recoding a loaded throwing rotation speed; and (6) evaluating the performance of the mud to be tested comprehensively according to the thickness and quality of the loaded mud cake and the unloaded mud cake, the unloaded throwing rotation speed, the loaded throwing rotation speed and set parameters. The method of the invention is simple, effective and highly maneuverable. In addition, the invention also provides a mud cake performance comprehensive evaluation device using the method.

The invention discloses a wind power cluster power prediction method based on time-space correlation. The prediction method analyzes the time-space correlation between wind farms in the wind power cluster, uses various types of correlation calculation methods for calculation, and introduces the Shapley value method for calculation. Weighting makes the correlation evaluation more comprehensive and calculates the correlation in the wind power cluster more accurately. The prediction method considers various factors affecting power generation, and integrates various factors together to extract the overall temporal and spatial correlation characteristics of the wind power cluster, thereby achieving the effect of direct wind power cluster power prediction and avoiding errors caused by superimposed predictions of existing methods The disadvantages of superimposition along with it improve the prediction accuracy. In addition, the convolutional neural network is used to extract the key spatio-temporal features of the wind power cluster to achieve the purpose of reducing the dimension, so that the spatio-temporal features of the wind power cluster can be directly input into the neural network, corresponding to the power of the wind power cluster, and it is more convenient to carry out wind power cluster Generating power forecasting makes forecasting more accurate.

The invention provides a mud cake performance comprehensive evaluation method, which comprises the following steps: (1) placing a loaded mud cake and an unloaded mud cake on a rotating tray; (2) applying a pressure onto the loaded mud cake, and recording the thickness and quality of the loaded mud cake and the unloaded mud cake respectively; (3) starting a linked rotating tray, and increasing therotation speed gradually; (4) recording an unloaded throwing rotation speed; (5) increasing the rotation speed till the loaded mud cake is thrown out from the tray, stopping the rotating tray, and recoding a loaded throwing rotation speed; and (6) evaluating the performance of the mud to be tested comprehensively according to the thickness and quality of the loaded mud cake and the unloaded mud cake, the unloaded throwing rotation speed, the loaded throwing rotation speed and set parameters. The method of the invention is simple, effective and highly maneuverable. In addition, the invention also provides a mud cake performance comprehensive evaluation device using the method.

The invention discloses a test system for testing a rotor type energy recycling device. The system is composed of the rotor type energy recycling device, a low-pressure pipeline part, a high-pressure pipeline part and a system control and data collection unit. The low-pressure pipeline part and the high-pressure pipeline part are connected with an inlet and an outlet of the energy recycling device, the system control and data collection unit controls the high-pressure pipeline part and the low-pressure pipeline part to conduct various device motions, collect corresponding information, and conduct corresponding analysis processing, and therefore various performance indexes such as the energy recycling efficiency, lubricating flow, inlet and outlet pressure dropping and system stability of the rotor type energy recycling device are obtained. The test system has the advantages of being compact in structure, reliable in use, flexible in operation, strong in adjustability and the like.

The invention provides a method for detecting flow properties of hot melt adhesives for flexible flat cables, comprising the following steps: (a) preparing a hot melt adhesive film to be tested; (b) standing and balancing; (c) treating Measure the hot-melt adhesive film for heating, control the constant output pressure of the probe to the hot-melt adhesive film to be tested to a value in the range of 400mN to 600mN, and select the test result; (d) repeat step (c), and set the constant output pressure to 600mN A value in ~800mN; (e) Repeat step (c), and set the constant output pressure to a value in 800mN ~ 1000mN; (f) Take the existing qualified hot melt adhesive for testing to obtain and evaluate the flow performance of hot melt adhesive (g) comparing the test result with the qualified standard to determine whether the hot melt adhesive film to be tested is qualified. The invention has the advantages of conveniently and stably monitoring the flow performance of hot-melt adhesive products at any time, improving the performance evaluation of hot-melt adhesives, and further screening the hot-melt adhesives used in flexible flat cables.

The invention relates to a metering performance verification device of a large-scale grounding resistance tester, and belongs to the technical field of large-scale grounding resistance testing. The calibration device of the present invention, the measurement performance of the large-scale grounding resistance tester includes: indication error, the influence of auxiliary grounding resistance on indication error, the influence of ground voltage on indication error, and the influence of ground grid self-inductance on indication error Influence and influence of crosstalk between test lines on indication error. The verification device of the present invention can quantitatively evaluate the anti-interference ability of the large-scale grounding resistance tester, and adds the influence of the two factors of grounding self-inductance and crosstalk between test lines, so that the large-scale grounding resistance tester can Testing in an environment that simulates real working conditions ensures the effectiveness of performance evaluation of large-scale ground grid testers.

The invention discloses a thermal-protection material thermal prevention and insulation system, a testing method and a heat treatment method. It can be achieved that a spacecraft thermal-protection material is closer to multi-state thermal prevention and insulation performance testing of a service environment. In the meanwhile, in the preparing process of the thermal-protection material, single-face heat treatment or sintering is conducted, the gradient temperature is formed in the thickness direction, the surface undergoes high temperature, service is stable at high temperature, while the inward temperature is gradually lowered, and both the mechanical property and the thermal insulation performance of the material are improved. As is tested, the overall mechanical property of the material can be improved by around 20%, and the heat conductivity can be lowered by 10% or above. Therefore, by means of the testing system, it can be achieved that the thermal-protection material is closerto the multi-state thermal prevention and insulation performance testing of the service environment, it can also be achieved that in the material preparing process, single-surface high-temperature quick heating is conducted, and the comprehensive performance of the thermal-protection material is improved.

A parallel message route detection method, an ICMP message with the detected IP address A as the target address is set, if the response message of the ICMP message is received, the number of hops n from the measurement point to the target node is calculated , otherwise set the number of hops to 32, set n types of ICMP messages of the same target node A, and set the TTL field of each ICMP message to n different positive integers from 1 to n, from the measurement point to The target address sends the set n types of ICMP messages, k ICMP messages of each type are sent, and the sending timestamp, identification number and TTL of each message are recorded, and the response messages of all ICMP messages are received and Mark the receiving time stamp, record the time stamp of the response message and the IP address of the response in the record where the identification number of the sent message in the array is the same as the identification number of the original IP message header in the response message measured, and calculate the output to reach the target node Routing, delay and packet loss rate of intermediate nodes.

The invention proposes a method and a device for evaluation the performances of modularized multi-level current converters. The method comprises: through the calculation of the current suppression time of various modularized current converters and the voltage deviation of the sub-modules, and then, based on the weights between the current suppression time and the sub-module voltage deviation and the modularized current converters, calculating the performance indexes of the modularized multi-level current converters including the evaluation on the cost of the current converters; and then, determining the performances of the modularized multi-level current converters so as to assist the selection of topology structure of the modularized multi-level current converters. According to the method and the device of the invention, the evaluations on the performances of the current converters are more improved, and the current suppression time and the voltage deviation of the sub-modules can be obtained through model calculations rather than through simulation or testing. The calculation method is simple, reliable and easy to perform.

The invention provides an efficiency evaluation method of an application system. The method includes: setting dimensions used for evaluating efficiency of the application system, wherein the dimensions include a load, performance, capacity, availability, reliability and compliance; respectively setting a corresponding weight for each dimension; and respectively multiplying each dimension by the corresponding weight thereof, and then carrying out summation on products to obtain the efficiency of the application system. According to the method, efficiency evaluation can be scientifically, comprehensively and effectively carried out on the application system, and a basis is provided for construction of a green data center.