31results about How to "Faster and more accurate）" patented technology

This invention discloses a car suspended damp matching test method and system based on a magneto-rheopectic technology, in which, the system is composed of an up-sprung mass, an unsprung mass, a spring, a magneto-rheopectic damper, a force sensor, a shift sensor, a switch analog switch of an outside peak test module and a feed back controller. Before testing, related voltage signals are got by designing necessary recovered damp value and the compressed damp value of the magneto-rheopectic damper, when an operation head moves up and down to excite the system and the shift sensor tests the relative signal peak value of the piston, the relative voltage signals are input to the feedback controller as the given value by the switch analog switch to control the damper to reach the designed recovered damp value, the compressed damp value and the optimum matching.

The invention discloses a method and a system for testing vehicle suspension damp match based on a magnetic flow variation technology. The system comprises: testing vehicle, an exciting platform, a magnetic flow variation damper, a power sensor, an offset sensor, a testing system constructed by an analog switch of external peak value testing module and a feedback controller. The method comprises: before testing, setting needed magnetic flow variation damper recovering damp value, compressing damp value and getting corresponding voltage signal; exciting the system by the up and down actions of the exciting platform; detecting piston relative offset signal peak by the offset sensor; switching the analog switch to input the voltage signal of the recovering damp value and the compressing damp value to the feedback controller as constant value; controlling the magnetic flow variation damper via the feedback controller to reach the set recovering damp and compressing damp value and get the optimum matching.

The invention provides a network connectivity testing method and system. The method includes the steps of determining the number of test probes and the arrangement positions of the test probes in a network; testing the network connectivity situation between the test probes according to preset test requirements. By means of the method, a large network test coverage rate can be obtained by arranging a small number of test probes.

The invention discloses a main body brick used for constructing a hollow wall. The main body brick comprises a brick body which comprises a first long edge, a second long edge, a left rib and a right rib, limiting bosses are arranged on the upper ends of the left rib and the right rib, limiting grooves matched with the limiting bosses are formed at the lower ends of the left rib and the right rib, protruding strips are arranged at the upper ends of the first long edge and the second long edge, lower grooves matched with the protruding strips are formed at the lower ends of the first long edge and the second long edge, and the brick body is provided with through holes penetrating from top to bottom. When the main body brick is used for constructing the wall, upper-layer building blocks are piled on lower-layer building blocks, and the limiting grooves of the upper-layer building blocks are clamped on the limiting bosses of the lower-layer building blocks, so that the wall can be constructed more quickly and more accurately, and the constructed wall can be straight and smooth without string pulling or other methods. The wall constructed by the main body brick can realize ventilation, temperature preservation and heat insulation.

The invention discloses a building block. The building block comprises a first elongated edge and a second elongated edge arranged at a certain distance, and a rib connecting the first and second elongated edges. The upper end of the rib is provided with a limiting bump. The lower end of the rib is provided with a limiting groove matched with the limiting bump. Raised lines are arranged on the upper end faces of the first and second elongated edges. Transverse decorative concave slits are formed between the raised lines and the external end faces of the first and second elongated edges. Filler grooves are formed between the inner sides of the raised lines and the upper side wall. According to the building block provided by the invention, when the building block is used to build walls, the wall building speed can be improved to a great extent, the wall building time can be shortened, and the labor can be further reduced. The wall built by the building blocks provided by the invention has the advantages of ventilation, insulation and heat protection, and is further convenient to wire, and the external wall is not needed to be decorated again.

The invention discloses a method and equipment for sorting a document. The method comprises the following steps of: according to user query and an ontology base, extracting queried semantic information; according to the document, the query and the ontology base, extracting document semantic information; determining a relational semantic relevance between the document semantic information and the queried semantic information; and sorting the document on the basis of the relational semantic relevance. According to the method and the equipment provided by the invention, the document sorting accuracy can be effectively improved.

The invention provides a power MOSFET packaging thermal resistance comparison device, which comprises an adjustable DC power source, a switch power supply, a constant current control panel, a double-channel point temperature meter, a power MOSFET and a heat radiator. The power MOSFET is arranged on the heat radiator; the constant current control panel accurately controls different power MOSFETs to work in an amplification area and ensures same power consumption; and the double-channel point temperature meter measures the temperature on the surface of the power MOSFET and the temperature of the heat radiator at the lower portion of the power MOSFET. Through the control function of the constant current control panel, the current passing through the power MOSFETs is allowed to be controlled accurately, thereby greatly reducing the current difference since different power MOSFETs have start voltage difference; and meanwhile, under the condition of same power consumption, the temperature on the surface of the power MOSFET and the temperature of the heat radiator at the lower portion of the power MOSFET are measured by the double-channel point temperature meter, and thus packaging thermal resistance of the different power MOSFETs can be compared accurately and quickly.

The invention discloses a progressive time delay bandwidth speed measurement analysis method based on deep learning and a system thereof. A deep neural network is used to solve a learning process of feature expression. In order to improve the training effect of the deep neural network, people adjust the connection method and activation function of neurons, establish and simulate the neural networkfor analysis and learning of the human brain, and simulate the mechanism of the human brain to explain data. According to the invention, an intelligent design algorithm of deep learning is adopted, aCS architecture is combined, enough servers and demand clients are used for algorithm speed measurement, then user data is counted, and when the user data volume is enough, the required data can be obtained more quickly and accurately through deep learning.

The invention discloses a building group wind-heat environment simulation experiment measuring device and method under a quiet wind condition, belongs to the technical field of outdoor wind-heat environment testing, and solves the problem that the existing method for measuring the outdoor wind-heat environment of the building group cannot realize the measurement of the outdoor wind-heat environment of the building group in a quiet wind environment. The device comprises a quiet wind experiment box body, a building group component, a temperature testing system and a wind speed testing system, wherein the interior of the quiet wind experiment box body is an experiment space, the top of the quiet wind experiment box body is provided with an opening, the building group component comprises a building group model and a plurality of electrothermal films, and the electrothermal films are fixedly arranged on southward vertical faces of all buildings in the building group model to simulate heating of the vertical faces of the buildings. The wind-free environment can be provided, the influence of the external environment on the interior of the experiment is reduced, and the experiment result is more accurate and reliable. Compared with a wind tunnel experiment, the experiment operation is simpler, the experiment period is shorter, the manufacturing cost of the experiment device is lower, and an experiment result can be obtained more quickly and accurately.