10results about How to "Big error" patented technology

The utility model belongs to transformer oil technical field especially relates to transformer oil level intelligent monitoring device, including transformer casing, the top of transformer casing is connected with the connecting pipe no.

The invention discloses a method for evaluating the volume change rate of foundry coke, and belongs to the technical field of foundry coke production. The method comprises the following steps: substituting volatile components and caking indexes of coal as fired into a formula Vc = 0.4435 * Vdaf + 0.1995 * G-20.1214 to obtain a predicted value of the volume change rate of foundry coke; according to the method, the complex relation between the as-fired coal index and the foundry coke volume change rate can be accurately captured, the average absolute error can be controlled within 3% through actual verification, and compared with the prior art, the accuracy is improved by 40%-60%; the problem that the volume change rate of foundry coke cannot be accurately predicted is solved.

The application discloses a lithium ion battery internal short circuit fault simulation method, comprising the following steps: S1, establishing a lithium ion battery single particle lumped parameter estimation model, and estimating the dynamics and transfer attribute parameters of a lithium ion battery to be simulated by using a control equation; S2, constructing an electrochemical-thermal coupling 3D model and setting a control equation thereof; S3, substituting the dynamics and transfer attribute parameters of the simulated lithium ion battery into the constructed electrochemical-thermal coupling 3D model, simulating the electrothermal behavior of the lithium ion battery under different fault types based on the control equation, and realizing internal short circuit fault simulation. The application solves the defects of the existing fault simulation scheme in simulation accuracy, calculation rapidity and application universality, establishes an internal short circuit fault electrochemical-thermal coupling 3D model, and provides simulation data basis for an internal short circuit fault detection method.

The utility model provides a kind of machining center automatic clamping workpiece device, including base plate and automatically clamping mechanism movably set on base plate, clamping station is equipped on base plate, clamping station is equipped with multiple positioning surface for supporting and limiting workpiece, automatically clamping mechanism includes power drive assembly, force transmission mechanism and multidirectional clamping assembly;Power drive assembly movably set on base plate;Force transmission mechanism is rotatably connected on base plate, and is linked with power drive assembly;Multidirectional clamping assembly includes first clamping component and second clamping component, first clamping component is linked with force transmission mechanism, and is cooperated with one of positioning surface to realize the clamping positioning of workpiece vertical direction;Second clamping component is slidably arranged in base plate and is linked with first clamping component, and is cooperated with another one of positioning surface to realize the clamping positioning of workpiece lateral direction.The utility model realizes workpiece fast and stable automatic chucking, improves overall machining efficiency and product quality.

The utility model discloses a resistance test system, comprising a light source used for emitting light to a cell to be tested; the grating is located between the imaging device and the battery piece to be detected; the grating is used for shielding part of light emitted by the light source; the grating comprises at least two gratings, and the patterns of the at least two gratings are complementary patterns; the imaging device is used for respectively acquiring at least two first gray value images of the battery piece to be detected under the condition that the at least two optical gratings shield part of light rays emitted by the light source; under the condition that the light emitted by the light source is not shielded, the imaging device is also used for acquiring a second gray value image of the battery piece to be detected; the control module is electrically connected with the imaging device and the light source, and the light source is located on one side of the imaging device. According to the utility model, the non-contact measurement of the resistance of any metalized pattern battery piece can be realized, the universality and compatibility are good, and the accuracy of the test result is improved.

According to the specific implementation mode, a grouting sleeve is arranged at the upper end of a vertical column rib, the upper end of the grouting sleeve is open, the lower end of the vertical column rib of an upper layer prefabricated frame module unit is inserted into the grouting sleeve to achieve connection, and a top plate is of a structure with the fully-prefabricated center and the periphery laminated layer. Post-pouring holes are formed in the side faces of the beams, and shear-resistant steel bars are inserted to form connecting structures on the lower portions of the adjacent beams. Through optimization of a column vertical rib connection form, innovation of a top plate structure and improvement of a beam connection structure, the defects that in the prior art, pressure grouting operation is complex, connection construction conflicts with indoor decoration, and the connection strength between modules is poor are overcome, the connection strength of prefabricated frame module units is improved, the construction difficulty of a construction site is reduced, and the construction efficiency is improved. And the control difficulty of the connection construction quality is reduced.

This invention discloses a key exchange method, apparatus, and storage medium based on a modular lattice. The key exchange method includes: Party A generating a random number seed, obtaining a compressed public key, and sending it to Party B; Party B using the random number seed to obtain the compressed public key; recovering data from the received compressed public key from Party A and calculating a temporary key; processing the temporary key using a segmented signal function to obtain a signal value; using the signal value to coordinate the temporary key to obtain a shared temporary key, thereby generating a verification tag and deriving the final key; Party A recovering data from the received compressed public key from Party B, recalculating the verification tag, and comparing them; only when a match is successful, the final key is derived using the same method. This ensures the randomness of the data and the ability to detect tampering with the data received by Party A, thus achieving higher security. This invention significantly reduces the failure probability while improving security.

The present application relates to a kind of magnetic valve type current transformer air gap length determination method, device, equipment and medium, the method includes determining design input parameter;Magnetic valve type electromagnetic type current transformer is constructed based on design input parameter 3D model, and air gap magnetic circuit length is scanned simulation, obtain the magnetic induction intensity parameter corresponding to each air gap magnetic circuit length;According to the magnetic induction intensity parameter corresponding to each air gap magnetic circuit length, determine the magnetic flux continuity error rate corresponding to each air gap magnetic circuit length, and establish quantization relationship according to air gap magnetic circuit length and corresponding magnetic flux continuity error rate;According to quantization relationship and constraint parameter in design input parameter, determine the maximum air gap magnetic circuit length;According to the maximum air gap magnetic circuit length and constraint parameter, determine the effective value interval of air gap magnetic circuit length.The present application has the effect of improving design precision.

This invention discloses a control method and a control device. The control method includes: entering a first execution gear stage and determining a first target gear at this stage; acquiring execution information of the previous first target gear, including target position, drive duty cycle, and actual position; if the first position difference between the preset optimal position of the first target gear in the first execution gear stage and the actual position of the previous first target gear exceeds a first execution gear threshold, correcting the target position or drive duty cycle of the current first target gear; the previous first target gear and the current first target gear are in different first execution gear stages. In this invention, when the gear shifting control accuracy of the previous gear shifting operation is low, the control accuracy of the current gear shifting operation can be improved by correcting the target position or drive duty cycle of the current first target gear, thereby increasing the success rate and accuracy of gear shifting and ensuring the driver's driving experience.

This invention relates to the field of geomathematical geology, and particularly to a mass balance method based on multi-element proportional deviation synergistic analysis. The method includes: S1 data extraction and preprocessing; S2 PD matrix initialization; S3 PD matrix calculation and filling; S4 determination of inactive elements based on proportional deviation analysis; and S5 mass balance calculation, which calculates the migration degree of each element relative to the initial content of the original rock, thereby comprehensively evaluating the activity intensity and migration behavior characteristics of different elements during rock alteration, thus achieving a quantitative assessment of element migration behavior during rock alteration. The mass balance method based on multi-element proportional deviation synergistic analysis provided by this invention does not rely on traditional graphical discrimination methods, can accurately identify inactive elements in the data set, greatly improves computational efficiency and accuracy, and possesses high efficiency and universality. It can effectively perform computational analysis on element depletion states in complex geological environments.