13results about How to "Fast precision" patented technology

The invention relates to the technical field of positioning calibration, and provides a water jet scalpel robot autonomous operation three-dimensional detection and positioning calibration method, which comprises the following steps: S1, manually controlling the tail end of a mechanical arm to carry out coarse scanning, and searching a calibration target; s2, fine scanning path planning of the line laser scanner is carried out, and the scanning directions X and Y of the line laser scanner are determined; s3, multiple times of scanning are carried out in the X direction and the Y direction, and multiple pieces of point cloud data are obtained through scanning; s4, recording and processing the point cloud data, and reserving the point cloud data of the calibration target; s5, performing error feature estimation and calibration on the reserved point cloud data of the calibration target; s6, manually controlling the calibration of the tail end of the water jet cutter, and correcting the space offset of the tail end of the cutter head of the water jet cutter; s7, filtering the point cloud data obtained during normal operation to obtain global error compensation; and S8, performing dynamic positioning correction on the operation target. The method is used for scanning positioning error compensation and correction of a hand-eye system of the water jet scalpel robot and dynamic error correction in the operation process.

The invention discloses a power regulation and control method and system for a thermal power generation system, and relates to the field of power regulation, and the method comprises the steps: collecting real-time information, and calculating state data according to the real-time information; predicting a damping ratio by using the state data and a stability prediction model, obtaining a damping ratio variable quantity according to the damping ratio, obtaining a power adjustment quantity based on the damping ratio variable quantity and a power adjustment model, determining a correction adjustment quantity according to the power adjustment quantity, and adjusting the power according to the correction adjustment quantity. And distributing the power adjustment amount by using the correction adjustment amount and the adjustable capacity to realize power regulation and control. The stability of the thermal power generation system can be predicted more accurately, and the accuracy of power regulation and control is improved.

According to the machine tool measuring device and the measuring method thereof, the measuring device comprises an external hanging type main body frame, a measuring probe, a driving mechanism and a protection mechanism, the driving mechanism is installed on the main body frame and used for driving the measuring probe to move, the protection mechanism is used for protecting the measuring probe, and the protection mechanism comprises a retractable door capable of being opened in a sliding mode. The measuring probe comprises a probe which can extend out of the telescopic door, the protection mechanism can effectively protect the measuring probe, a rodless cylinder is adopted as a power source of the driving mechanism, so that the structure is more compact, a probe rod is made of carbon fibers, the measuring device is lighter, and the driving mechanism can quickly drive the measuring probe to measure. The machining efficiency is improved, the overall time is shortened, and the machining rhythm is accelerated.

The present application belongs to the field of metal ion concentration detection, and particularly relates to a method for detecting the concentration of vanadium ions in the negative electrolyte of a vanadium battery by two-step potentiometric titration. In view of the problems of inaccurate measurement results, large errors and complicated operation of the negative electrolyte of the vanadium battery, the present application detects the concentration of vanadium ions in the negative electrolyte of the vanadium battery by two-step potentiometric titration. In the first step, the negative electrolyte is added to a solution containing excess pentavalent vanadium and sulfuric acid, and the pentavalent vanadium ions oxidize the divalent and trivalent vanadium ions in the solution into tetravalent vanadium ions, and at the same time, part of the pentavalent vanadium ions are reduced into tetravalent vanadium ions. Subsequently, the concentration of tetravalent vanadium ions in the solution is titrated with potassium permanganate to solve the problem of exposure of divalent vanadium ions to oxidation. In the second step, the concentration of vanadium ions in the negative electrolyte is directly titrated with potassium permanganate. The results prove that the present application has small detection result deviation, high precision and accuracy, and the instrument is light and portable, and is suitable for real-time monitoring of energy storage power stations.

This invention discloses a device for detecting and clearing ice and snow debris from power lines, comprising five parts: a crawling mechanism, an obstacle-crossing and clearing mechanism, an eddy current heating device, an autonomous power-collecting device, and a drone docking and flight device. The autonomous power-collecting device includes an electromagnetic power-collecting device and a pantograph contact power-collecting device. The crawling device and the eddy current heating device are located inside an openable structure, while the outside of the openable structure is connected to the electromagnetic power-collecting device and the obstacle-crossing and clearing mechanism. Drone docking and flight devices are located on both sides of the crawling device, with the pantograph contact power-collecting device placed on top of the drone docking and flight devices. A main control unit is located between the crawling device and the electromagnetic power-collecting device. This invention solves the problem that traditional mechanical clearing methods easily damage power lines and accelerate wear. Simultaneously, this invention also addresses the safety hazards faced by existing clearing equipment and personnel, as well as the problem of short single-operation time due to battery performance limitations.

This invention relates to the field of medical technology and discloses a self-supervised breast cancer classification method, comprising the following steps: S1: Image acquisition and dataset creation: acquiring contrast-enhanced spectral images of different modalities and multimodal contrast-enhanced spectral mammography images; S2: Data preprocessing: preprocessing the multimodal contrast-enhanced spectral mammography images, cropping the images, and performing pixel mean squarening; S3: Image feature extraction: extracting image features using a Vision Transformer model and providing image category predictions; S4: Loss calculation: calculating the distortion entropy of the predicted classification result and the information entropy loss between the category confidences generated by the classification branches of the two spectral images. This invention improves speed while ensuring accuracy, balancing the relationship between accuracy and efficiency, and proposes a breast cancer image classification model with high accuracy, fast speed, strong robustness, and good adaptability.

The utility model belongs to the technical field of tool structures, and relates to a tool structure for installing an external roller, which comprises fixed seats arranged at two ends of the roller, and the roller is rotatably connected with the fixed seats; the device further comprises a fixed end fixedly connected to one of the fixed seats, a motor bottom plate is connected to the side, away from the roller, of the fixed end, and the motor bottom plate is used for installing a motor; a pull rod is arranged between the motor bottom plate and the fixed end, one end of the pull rod is connected to the end, away from the fixed end, of the motor bottom plate, and the other end of the pull rod is connected to the top of the fixed end to form a cable-stayed structure. According to the utility model, through the innovative cable-stayed structure and the modular design, the base-free installation of the motor on the external roller is realized. According to the core scheme, an L-shaped combined structure of the fixed end and the motor bottom plate is adopted, a cable-stayed supporting system is formed in cooperation with the pull rod, and a complex base system needed for installation of a traditional roller motor is remarkably simplified.

The invention relates to a master-slave control device, a master-slave control system and a master-slave control method for cataract ophthalmic surgery. The method comprises the following steps: dividing a plurality of equipment slave stations into response slave stations and standby slave stations according to slave station use requirements corresponding to a surgery stage; determining a target transmission sequence according to the fact that the transmission priority of the response slave station is higher than that of the standby slave station; generating a second operation instruction of the slave manipulator according to the first operation instruction of the master manipulator based on a preset mapping model; the control master station generates a data frame comprising a plurality of sub-instructions, and transmits the data frame according to the target transmission sequence through the real-time communication network; the plurality of equipment slave stations obtain corresponding sub-instructions from the real-time communication network; the first instruction threshold value and the second instruction threshold value of each equipment slave station are set, the execution strategy of the sub-instructions is determined based on the two instruction threshold values, the equipment slave stations are controlled to execute the sub-instructions according to the execution strategy, various risks of different degrees are flexibly dealt with, and the smoothness, the real-time performance and the safety of the equipment slave stations in instruction execution in the operation process are balanced.

The invention discloses a vehicle fault analysis method, device and system, and the method comprises the following steps: extracting a candidate document set from a preset expert knowledge base according to a fault query text; according to the fault query text, extracting a final document set from the candidate document set; and outputting the final document set as a vehicle fault analysis result. According to the method, the retrieval of the expert knowledge base is divided into a primary screening stage and a fine screening stage, and the efficiency and the accuracy of the retrieval are considered through staged screening.

The intelligent parameter adjusting device comprises a shell, an intelligent parameter adjusting system, an air switch and a contactor are arranged in the shell, a power source is arranged outside the shell, and a display control module is further arranged on an external panel of the shell. The power supply is electrically connected with the air switch, the contactor and the intelligent parameter adjusting system; the power source is electrically connected with the air switch, the contactor, the intelligent parameter adjusting system and the display control module, and the intelligent parameter adjusting system is further connected with a pumping unit motor arranged outside the shell. Compared with a traditional frequency converter, the parameter adjusting device has the advantages that power input side working current and voltage detection is added, the underground working condition of an oil well can be accurately judged, closed-loop control is carried out through parameter comparison, analysis and operation, and therefore the oil well is made to run at the optimal system efficiency all the time, and the purposes of saving energy and reducing comprehensive cost are achieved. The invention further discloses a control method of the parameter adjusting device, sensorless closed-loop control is adopted, and the control process is few in links, short in path, high in speed and high in precision.

A track gauge measuring system comprises two wireless digital display displacement meters, a sliding block, a sliding base, a prism set and an elastic piece, the two wireless digital display displacement meters are symmetrically arranged and installed on the lower sides, close to the left end and the right end, of a track measuring vehicle through connecting bases respectively, one wireless digital display displacement meter is connected with the sliding block, the sliding block is connected to the inner side of the sliding base in a sliding mode, and the prism set is connected with the elastic piece. The sliding base is connected to the lower side of the track measuring vehicle, the elastic piece is connected between one wireless digital display displacement meter and the sliding block, the lower side of the sliding block penetrates through the sliding base and then is connected with a first rolling piece, and the first rolling piece is connected to the standard gauge position on the inner side of a track in a rolling mode. The lower end of the prism set penetrates through the sliding base and then is connected to the upper side of the sliding block, the central axis of a prism rod is located over the contact portion of the first rolling piece and the inner side line of the rail, the movable measuring end of the other wireless digital display displacement meter is connected with a second rolling piece, and the second rolling piece is connected to the standard gauge position on the inner side of the rail in a rolling mode. According to the design, the measuring precision is high, and the service life is long.

The utility model relates to steel structure connecting structure technical field, and disclose complex steel structure adaptive regulation's connecting structure, including hoop piece, connecting piece and adjusting part, one end of connecting piece with hoop piece fixed, the first waist type groove is seted up in connecting piece side end outer surface, the upper and lower sides of first waist type groove are respectively equidistance and set up second waist type groove, first waist type groove with second waist type groove parallel design, all with hoop piece arc axis vertical, the fixed hole is seted up in adjusting part outer surface, at least six adjusting holes are arrayed distribution with the circumference, the fixed hole realizes fixed connection with first waist type groove through first bolt, adjusting hole realizes fixed connection with second waist type groove through second bolt, the utility model has the function of horizontal displacement adjustable and all -direction angle adaptation, solved the problem that traditional steel structure connecting piece regulation ability is poor, the low problem of installation efficiency.

The invention discloses a method for preventing deviation of a transverse moving position, which belongs to the technical field of steel plate conveying in the metallurgical industry and specifically comprises the following steps of: (1) fixedly arranging a detection component on a transverse moving panel of a steel plate transverse moving device; (2) the steel plate moves on a transverse moving device, and a detection component on a transverse moving panel carries out distance measurement on the steel plate to detect whether the transverse moving motion of the steel plate is in situ or not; (3) when the detection component detects that the steel plate has an output signal, the transverse movement is carried out in situ, the numerical value of an encoder in the transverse movement device is normal, and the steel plate runs in a normal transverse movement manner; when the detection component does not detect the steel plate, no signal is output, the transverse movement is not in the original position, the numerical value of an encoder in the transverse movement device is modified to be normal, and alarm processing is carried out on position deviation of the steel plate; the method is simple and easy to implement, equipment position deviation is effectively prevented, and the steel plate quality is guaranteed.