15results about How to "Avoid correction" patented technology

The invention belongs to the technical field of power systems, and discloses a method for maintaining electric energy metering, which comprises the following steps of: acquiring electric energy metering related data; preprocessing the electric energy metering related data to obtain an electric energy metering comprehensive characteristic data set; according to the electric energy metering comprehensive feature data set, training to obtain an electric energy metering error prediction model, and based on the electric energy metering error prediction model, predicting to obtain an electric energy metering error; judging whether error correction is needed or not according to the predicted electric energy metering error; if error correction needs to be carried out, early warning information is generated, and electric energy metering error data is automatically collected; training to obtain an error type identification model according to the electric energy metering error data, and predicting to obtain electric energy metering error type data based on the error type identification model; based on the electric energy metering error type data, utilizing a distribution calibration algorithm to correct the electric energy metering error; the requirement for manual intervention is reduced, and the working efficiency of the system is improved.

The application provides a wind power blade resin flow prediction method and system based on digital twinning, relates to the technical field of digital twinning, and comprises the following steps: obtaining multi-source detection historical data about a to-be-detected wind power blade mold, and determining a historical resin front position and a historical resin advancing speed; creating a three-dimensional resin model based on the geometric size of the to-be-detected wind power blade mold, introducing resin material parameters and resin process parameters to simulate a resin flow process, combining temperature state parameters, and constructing an initial resin flow model; inputting the multi-source detection historical data into the initial resin flow model to generate a prediction center reflection wavelength sequence and a prediction temperature change sequence, and correcting parameters of the initial resin flow model based on the difference between the historical center reflection wavelength sequence and the historical temperature change sequence, so that a target resin flow model is obtained; and inputting multi-source detection real-time data of the to-be-detected wind power blade mold into the target resin flow model to generate corresponding resin state parameters.

The application discloses a digital BPM channel amplitude correction method and device, equipment and a storage medium thereof, and relates to the technical field of particle accelerators. The method comprises the following steps: receiving amplitude information and filter initial coefficients of a filter in a digital beam position probe, wherein the amplitude information is obtained by collecting the amplitude of each channel after the digital beam position probe receives a linear frequency modulation signal sent by a correction signal generator, and the linear frequency modulation signal is an analog bandwidth signal of the digital beam position probe; generating a correction coefficient array based on the amplitude information; performing convolution processing on the correction coefficient array and the filter initial coefficients to obtain the latest filter coefficients, and sending the latest filter coefficients to the digital beam position probe, so that the digital beam position probe performs amplitude correction between channels based on the latest filter coefficients. In other words, the amplitude information of the overall frequency band of the digital BPM is combined to improve the accuracy of the digital BPM amplitude correction.

The utility model relates to the technical field of auxiliary installation of printed circuit boards, and discloses an auxiliary installation assembly of a printed circuit board, the auxiliary installation assembly comprises a bracket, the inner walls of the left side and the right side of the bracket are each slidably connected with two sliding blocks, the four sliding blocks are equally divided into two groups, and each group of sliding blocks is fixedly connected with a cross rod; the device comprises two cross rods, two cross blocks are slidably connected to the outer sides of the two cross rods, and tool rods are fixedly connected to the top sides of the four cross blocks. According to the device, the cross rods and the cross blocks are arranged, and the front-back mobility of the cross rods is matched with the left-right mobility of the cross blocks, so that the positions of the tool rods can be adjusted according to printed circuit boards of different sizes; after the positions of the four tool rods are adjusted, printed circuit boards needing to be installed and shells matched with the printed circuit boards are arranged on the tool rods in a sleeving mode, at the moment, when screws are used for screwing, dislocation of hole channels can be effectively avoided, correction is avoided, time waste is avoided, and the installation efficiency is improved.

The present invention discloses a method for preparing deep trench isolation of a back-illuminated image sensor, comprising: step one, providing a semiconductor device, the semiconductor device comprising a front side and a back side, a silicon epitaxial layer being formed on the back side; step two, depositing a composite hard mask layer with a three-layer structure on the silicon epitaxial layer; step three, performing CDTI hard mask etching, stopping the etching to the middle layer of the composite hard mask layer, and obtaining a first hard mask layer with a first trench formed thereon; step four, performing DTI hard mask etching, stopping the etching to the silicon epitaxial layer, and obtaining a second hard mask layer with a first trench and a second trench formed thereon; step five, using the second hard mask layer as a mask, etching the silicon epitaxial layer, and simultaneously forming CDTI and DTI structures in the silicon epitaxial layer.

This utility model relates to the technical field of steel structure die casting molding device, and discloses a die casting molding device for steel structure production, including a U-shaped bracket, with a support column fixedly connected to the bottom of the inner wall of the U-shaped bracket. By pressing a button, a spring is compressed, causing a limiting block to slide along the inner wall of the second limiting groove, thereby disengaging the limiting rack ring from the limiting rack groove. The rack then enters the interior of the third limiting groove. Rotating the button drives the gear through the limiting rack ring, causing the rack to continue moving inward until the second die casting mold and the first die casting mold are fully in contact. Releasing the button allows the limiting rack ring to re-engage with the button under the action of the spring, firmly fixing the first and second die casting molds together. This prevents molten steel from flowing out of the die casting mold during cooling, affecting the post-die casting performance and avoiding the need for correction of irregular parts after die casting, thus improving die casting efficiency.

The invention provides a CT geometric parameter correction method and system and electronic equipment. The correction method comprises the steps that at least three first center coordinates of a ray window of a ray generator and at least three second center coordinates of a flat panel detector in the scanning process are acquired; according to the first center coordinates and / or the second center coordinates, actual geometric parameters in the scanning process are calculated; and generating a corresponding relationship between the actual geometric parameters and the projection angle so as to correct the geometric parameters for image reconstruction. Because the corresponding relation is generated based on the first center coordinate and / or the second center coordinate in the scanning process, the corresponding relation can reflect the dynamic change of the actual geometric parameters of the C-shaped arm in the scanning process, and the geometric parameters used for image reconstruction are corrected according to the corresponding relation. According to the invention, the change of geometric parameters caused by factors such as vibration or gravity center change in the scanning process of the C-shaped arm can be overcome, so that the accuracy of CT geometric parameter correction is improved.

The invention relates to the technical field of writing, in particular to a handwriting self-adaptive correction system for a tablet personal computer, which comprises a handwriting input module; the template determination module is used for determining a handwritten target template; the handwriting feature acquisition module is used for acquiring the pause time of the writing action; a handwriting correction module; a correction display module; the feedback module is used for determining the correction angle and the correction smoothness in the process of correcting the characters into the handwritten target template; and a receiving module. The handwriting input module and the template determination module are used for comparing the input characters with the font template to determine the correction template, the handwriting feature acquisition module is used for determining the correction moment, and the handwriting correction module and the correction display module cooperate to correct and display the handwriting. And finally, a feedback module and a receiving module feed back the correction angle and the correction smoothness to the user, and perform correction based on user adjustment and determine whether a new handwriting template is generated or not, so that correction accuracy is ensured.

The present invention proposes a gas detection circuit and a gas signal acquisition method, including: a gas signal acquisition circuit, a translation circuit, a subtraction circuit, a 14-bit AD conversion circuit, a 14-bit DA conversion circuit, an FPGA circuit and a DSP data processing circuit; the present invention uses a 14-bit AD acquisition chip to realize 10 6 The linear dynamic acquisition range of the present invention solves the space station's demand for collecting trace gases; at the same time, before the DSP data processing circuit of the present invention reads the 14-bit AD conversion circuit, the baseline drift of the thermal conductivity detector bridge measured in advance is first sent to the DA conversion circuit, and the drift is subtracted by the subtraction circuit before AD acquisition is performed, so as to realize the correction of the baseline drift of the thermal conductivity detector, solve the problem of the change of the chromatographic column channel flow resistance caused by the gas path connection between the chromatographic module and the mass spectrometry module, and cause the drift of the chromatographic thermal conductivity detector baseline. The baseline of the thermal conductivity detector is adjusted by the gas signal acquisition method of the present invention, which avoids the adjustment of the gas path and reduces the on-orbit operation of astronauts.

A method for detecting and scribing the capacity of a liquid cargo tank of an LNG transport ship comprises the following steps: carrying out three-dimensional precision measurement on a block in advance by using a laser total station, carrying out data analysis on the block by using a simulated loading (Eco-OTS) technology, and drawing a detection position line at a detection position according to analysis data; wherein one simple tool is matched with a laser range finder to detect the distance of a straight structure in the cabin, and the other simple tool is matched with a total station to detect CM points in the cabin; in real ship body cabin capacity detection, according to each detection position line which is drawn in advance, a simple tool is placed at the position line, and a laser range finder is matched for detection; and the other tool is placed at the CM point, and the total station detects the mark point of the tool to obtain detection data. According to the method, data detection is more visual and reliable, correction caused by data errors due to unstable use of the range finder in the detection process is prevented, the precision and efficiency are improved, and a large amount of construction cost and time are saved.

The invention discloses a battery management method and a battery management system. The battery management method comprises the following steps: acquiring a battery serial number and battery state information sent by a terminal; wherein the terminal is detachably connected with a battery; if the battery state information is within a first threshold range, comparing the battery state information with system battery information corresponding to the battery serial number; and when it is determined that the battery state information is not abnormal based on the comparison result, updating the system battery information into the battery state information. According to the battery management method provided by the invention, systematic data processing, analysis and statistics can be effectively carried out on the battery data, and the data can be effectively corrected by utilizing bad data detection and information comparison.

The problem solved by the present invention is to provide a novel option for machining flat workpieces (6), wherein particularly high productivity and improved precision can be achieved with only one machining unit (4). The problem is solved according to the present invention in that the movable table system (2) comprises two identical tables (21, 22) on a common track arrangement (23), the common track arrangement (23) having a linear track area below the detection unit (3) and the machining unit (4), and thus the tables (21, 22) can be moved linearly alternatingly along the common track arrangement (23) completely below the detection unit (3) and the machining unit (4) in the same table movement direction, and the tables (21, 22) can be independently controlled by a computer unit (5).

The utility model relates to the technical field of coal mining, in particular to a coal mining auxiliary tool based on accurate roadway tunneling. According to the technical scheme, the coal mining auxiliary tool based on accurate roadway tunneling comprises an inserting rod, a base, a laser ranging rod and a fixing column, the inserting rod is arranged at the bottom end of the base, the base is inserted and fixed into a roadway through the inserting rod, a groove is formed in the base, the fixing column is arranged in the groove, and the laser ranging rod is arranged in the fixing column. Laser ranging rulers are fixed on the fixing columns, through holes are formed in the bases and the fixing columns in a penetrating mode, lasers of the laser ranging rulers on the bases at the two ends on the same axis penetrate through the through hole in the base in the middle to ensure the tunneling direction, and meanwhile the tunneling distance is measured through the laser ranging rulers. According to the utility model, the working efficiency, the accuracy and the safety are improved, and meanwhile, the convenience and the stability are realized.

The invention discloses a constellation optimization design method for providing navigation service for earth-moon space, and belongs to the field of aerospace constellation optimization. The implementation method comprises the following steps: designing a nominal orbit of each orbit type under a CRTBP model, and generating a reference working orbit library; a plurality of performance index models are established, and comprehensive scoring is carried out based on a weighted average method. According to the earth-moon navigation constellation scheme optimization algorithm, the number of satellites in a constellation serves as the unique input, the maximum number of deployed satellites under each orbit type is restrained, simulation starting and ending time is given, after weight distribution is conducted on indexes, all constellation combination schemes are generated through a dynamic programming method, and the optimal constellation scheme is obtained. And index calculation and comprehensive evaluation sorting are carried out on each scheme to obtain an optimal scheme. An orbit number combination under an orbit family selected by an optimal scheme is used as an optimization variable, and a continuous amplitude optimization problem is simplified into a discrete number integer programming problem. And after the orbit amplitude combination is determined, the initial phase of the orbit is optimized to obtain an optimal constellation configuration.

The invention discloses an automatic drilling and riveting system and method for a helicopter. The two transverse sides of the rotary lifting positioning system are transversely and slidably connected with a drill plate moving fixture (8) through rails (7), a drill plate is arranged on the drill plate moving fixture (8), and an automatic drilling and riveting system is arranged on one longitudinal side of the rotary lifting positioning system. The automatic drilling and riveting system comprises an AGV (2), a mechanical arm (1) is arranged on the AGV (2), and an automatic drilling and riveting multifunctional end effector (3) is arranged at the tail end of the mechanical arm (1). The rotary lifting positioning system comprises a lifting platform (5), a rotary table (6) is arranged on the top of the lifting platform (5), and a rotary positioning main fixture (4) is arranged on the rotary table (6). The production efficiency and the flexibility of the production line are improved.