34results about How to "High applicable value" patented technology

The invention provides a lithium iron phosphate battery modeling and SOC estimating method in account of capacity loss. The method is provided based on the facts that the working state of the existing lithium iron phosphate battery is influenced by many factors of temperature, current, cycle times, depth of discharge and the like, and thus the modeling process is very complicated. According to the method, based on the Thevenin equivalent circuit, the modeling work is conducted on the lithium iron phosphate battery; the model open-circuit voltage, resistance and capacitance value identification method are given; and the capacity loss of the lithium iron phosphate battery in the life cycle is taken into account; a capacity estimation mathematical model is established; the output precision of a lithium iron phosphate battery model is improved; and the lithium iron phosphate battery SOC estimating problem brought by uncertainty noise is solved with extended Kalman filtering (EKF) algorithm. The method has the advantages of being simple, scientific and reasonable, high in application value, good in effect and the like.

The invention provides a cross-media intelligence target element association analysis system and an association analysis method thereof. The invention can remarkably improve the analysis ability of the target object and the application value of the analysis result to the user. The invention is realized by the following technical scheme: the user interactive operation module selects a decision treemodel corresponding to the purpose of information analysis, a goal-centered model of target elements is established, the user requirement information is sent into an association expansion processingmodule, Reads the target element model of the initial retrieval intelligence set according to the index, obtains the structured data of the attribute items of the intelligence data input into the database module, uses the domain prior knowledge and element expansion rules provided by the external data support module to carry out element expansion, and obtains the new extended target element and element expansion intelligence; Retrieves all the information, and outputs the correlation results of the target events to the support service module, and outputs the target analysis results including the target correlation and the target activity law.

The invention discloses a magnetic push suspension bearing unit, comprising a shaft, an inner magnetic ring, an outer magnetic ring, an auxiliary bearing, a limiting block and a bracket, wherein the inner magnetic ring is arranged at the near end part of the shaft; the corresponding outer magnetic ring is arranged on the bracket; the adjacent surfaces of the two magnetic rings are the same in polarity; an inner magnetic barrel for magnetizing in a radial manner is arranged on the shaft; the inner magnetic barrel is sleeved with an outer magnetic barrel for magnetizing in the radial manner, and the outer magnetic barrel is fixedly arranged on the bracket; the adjacent surfaces of the two magnetic barrels are the same in polarity; the auxiliary bearing is also arranged between the shaft and the bracket; corresponding limiting block and limiting ball are arranged at the end of the shaft; a direct contact rolling body is not formed between the shaft and the bracket; the shaft and the bracket form a suspension state by virtue of a magnetic push shaft; the shaft and the bracket are free of friction, free of abrasion, high in transmission efficiency, free of cooling and lubricating, and long in service life, and the magnetic push suspension bearing unit has high applicable value in high-speed fields of aerospace and the like.

The invention discloses a finger vein image segmentation method based on directional valley detection, a system thereof and a terminal. The method comprises the following steps: 1, a finger vein imageacquired by an image acquisition module is received; 2, ridgelet transformation is carried out on an intercepted finger vein image and image enhancement processing is carried out; 3, a valley area isextracted for the vein image after enhancement processing; 4, the obtained vein image is divided to three areas: a background area, a confusion area and a foreground area, and three times of threshold segmentation processing are carried out on the three areas; and 5, the obtained segmented image is subjected to edge detection, and a segmented image after processing is outputted. According to thesystem and the method of the invention, an algorithm is put forward according to some intrinsic information contained in vein images such as the shape, the step property and the direction, the vein features of interest in the image can be accurately extracted, and extracted error features can be reduced.

The invention discloses a concrete creep prediction method considering damage influence. The method comprises the following steps: taking the residual quadratic sum of a creep test value and a creep calculation value as a target function, inverting parameters in the creep degree formula, constructing a general creep degree formula, determining a damage variable, constructing a concrete creep prediction model based on the general creep degree formula and the damage variable, and completing prediction of the concrete creep process by adopting the constructed concrete creep prediction model. According to the concrete creep prediction method, influence of damage such as cracks on the creep deformation development process is comprehensively considered; the method has high fitting precision, anerror between a creep deformation result of the concrete obtained through the method and the actual deformation result of the concrete is small, powerful theoretical support can be provided for designof a concrete structure and durability and safety evaluation of the concrete structure, and the application value is high.

The invention discloses a tunnel secondary lining arch frame unit, an arch frame structure constituted by the same and an erection method of the arch frame structure. The tunnel secondary lining arch frame unit comprises at least three arch frame unit main ribs with the same length, the exteriors of all arc frame unit frames are fixedly connected into an arc frame unit framework through a plurality of stirrups, and the two ends of the arc frame unit framework are each fixedly connected with a piece of connection angle steel. The arch frame structure comprises a plurality of tunnel secondary lining arch frame units, all the tunnel secondary lining arch frame units are connected into an arc-shaped arch frame in sequence through bolts and nuts; the outer side of the arc-shaped arch frame is fixedly connected with outer layer of circumferential main ribs in a welded mode, and the inner side of the arc-shaped arch frame is fixedly connected with inner layer of circumferential main ribs in a welded mode; and a plurality of arch-shaped arc frames are arranged side by side in parallel at intervals to from an arch frame assembly. According to the tunnel secondary lining arch frame unit, the position of a double-layer reinforcing rib net of a tunnel secondary lining can be accurately positioned, and it is ensured that the concrete protection layer thickness of double layers of reinforcing ribs meets the design requirement, and meanwhile, the phenomenon that a waterproof plate is punctured can be effectively avoided.

A universal operating device for an overdrive gearbox and a use method thereof, including a gearbox gear selecting and shifting shaft, and a gear selecting and shifting rocker arm and a gear selecting and shifting block which are arranged on the gearbox gear selecting and shifting shaft, where one end of the gearbox gear selecting and shifting shaft is separately in transmission fit with a gear selecting flexible shaft and a gear shifting flexible shaft through the gear selecting and shifting rocker arm, and the other end of the gearbox gear selecting and shifting shaft is in transmission fit with a gear shifting guide block through the gear selecting and shifting block; the gear selecting flexible shaft is in transmission fit with the gear selecting and shifting rocker arm through an overdrive gear switching device; and the overdrive gear switching device includes a gear shifting fork, the upper end of the gear shifting fork is in transmission fit with the upper end of the gear selecting and shifting rocker arm, and the lower end of the gear shifting fork is in transmission fit with the lower end of the gear selecting and shifting rocker arm. In use, the transmission direction of the gear selecting and shifting shaft is changed by utilizing the translation of the rocker arm without changing an inner structure of the gearbox. Therefore, the design is simple in structure and low in manufacture cost, and can realize gear order reverse shifting of the gearbox without changing the inner structure of the gearbox.

The invention provides a molten slag surface tension prediction method based on melt structure analysis. The molten slag surface tension prediction method comprises the steps of: S1, obtaining the oxygen bond type and the oxygen bond mole fraction of to-be-detected molten slag; and S2, inputting the oxygen bond type and the oxygen bond mole fraction into a pre-trained molten slag surface tension prediction model, and solving the molten slag surface tension prediction model to obtain a predicted value of the surface tension of the to-be-detected molten slag, wherein the molten slag surface tension prediction model comprises a molten slag surface tension prediction equation constructed by considering the formation mechanism of the surface tension of the oxide melt and combining the oxygen bond type and the oxygen bond molar fraction of the molten slag according to thermodynamic equilibrium and the Gibbs free energy theory. The prediction precision and stability of the slag surface tension are improved.

The invention relates to the field of mold steel machining equipment, in particular to a milling fixture for mold steel. The milling fixture for the mold steel is provided with a pedestal used for containing the mold steel, a milling fixture body capable of adjusting the milling angle is installed on the pedestal surface of the pedestal, the milling fixture body is provided with a magnetic fixturebody used for clamping the mold steel, the front side of the magnetic fixture body directly faces a milling machine, an electromagnet is installed on the back side of the magnetic fixture body, one end of the bottom of the magnetic fixture body is movably hinged to the pedestal, and the other end of the bottom of the magnetic fixture body is connected with a lifting air cylinder used for adjusting the inclination angle of the magnetic fixture body. According to the milling fixture for the mold steel, the applicability is good, the milling fixture can well adapt to the mold steel with the large size or length and the irregular surface, the labor cost and the equipment cost are greatly reduced, and the good application prospect is achieved.

The invention relates to the field of tape transportation, and discloses a tape coil positioning and parking method. The tape coil positioning and parking method comprises the following steps of installing a photoelectric proximity switch behind a predetermined parking overhaul point of a tape, enabling an emission head of the photoelectric proximity switch to be aligned with the tape, and measuring the distance from a point emitted to the tape by the photoelectric proximity switch to the predetermined parking overhaul point of the tape; when a faulty coil is overhauled, pasting reflective stickers on the tape corresponding to the faulty coil, and then starting the tape to move; and when a plc receives information sent by the photoelectric proximity switch and concludes that the faulty coil has moved to an emission point of the photoelectric proximity switch on the tape, calculating the time that the tape moves to the predetermined parking overhaul point of the tape according to the moving speed of the tape and the distance from the point emitted to the tape by the photoelectric proximity switch to the predetermined parking overhaul point of the tape, and controlling the tape to stop by the plc when reaching the time.

The invention provides a method for rapidly analyzing the quality of commercial zein products, belonging to the field of a product quality analysis method. A more comprehensive method for reflecting the quality of the products is established by analyzing the water content, the protein content, the crude fat content, the ash content, the pigment content, the protein denaturation and the like of the zein; the method has higher applicable value for guiding the quality control of a zein production enterprise and provides reference for the relevant theoretical research of the zein.

The invention discloses a prestressed concrete cylinder pipe capable of monitoring strain in real time, which comprises pipe core inner layer concrete, a steel cylinder, pipe core outer layer concrete, a prestressed steel wire and a mortar protective layer which are sequentially wrapped from inside to outside, and a glass fiber composite base optical cable is arranged on the pipe core inner layer concrete; a carbon fiber composite-based optical cable is arranged on the steel cylinder; a high-transmission tightly-wrapped sheath strain sensing optical cable is arranged on the outer layer concrete of the pipe core, bare optical fibers are arranged on the prestressed steel wire, and the glass fiber composite base optical cable is arranged on the mortar protection layer. The invention further relates to a manufacturing method of the prestressed concrete cylinder pipe capable of monitoring the strain in real time, the distributed optical fiber sensors are implanted in the PCCP manufacturing process, the problem of long-distance distributed monitoring of the strain of an existing PCCP pipeline is solved, and technical support can be provided for safety evaluation of the operation stage of the prestressed concrete cylinder pipe. And the application value is high.