27results about How to "No error" patented technology

The invention relates to a connecting rod type wafer edge searching and positioning mechanism which comprises a track substrate and a wafer suction cup installed in the middle of the track substrate. A centering rotating disc is installed between the transmission base plate and the track base plate, a second servo motor is installed on one side of the bottom of the transmission base plate, the driving end of the top of the second servo motor is connected with a driving gear located above the transmission base plate, and the driving gear is meshed with a driven gear installed at the bottom of the centering rotating disc; a plurality of connecting rod assemblies are evenly distributed on the centering rotary disc in the circumferential direction. The method can be compatible with six-inch and eight-inch wafer operation at the same time. According to the invention, the connecting rod type clamping jaw is used for fitting the wafer center of the wafer through the shape precision of the wafer through a single shaft to position the wafer, and the action is completed without using the linkage of three motion shafts XY theta of the wafer calibrator.

The invention discloses a glass fiber reinforced plastic fiber pipe wear resistance detection tool, and relates to the field of data acquisition and processing.The glass fiber reinforced plastic fiber pipe wear resistance detection tool comprises a box body, a leakage groove is formed in the top of the box body, a sealing disc is fixedly installed on the front side of the box body, a machine top box is fixedly installed at the top of the box body, and a grinding device is arranged in the machine top box; a chassis is fixedly mounted on the front side of the box body, a clamping device is arranged on the front side of the box body, and a cleaning device is arranged in the box body; wherein the clamping device is used for preventing a fiber pipe from being damaged by clamping due to too large clamping force caused by excessive torsion of a screw rod due to misoperation of a worker, so that the efficiency of subsequent grinding detection is reduced, and the grinding device is used for preventing data generated by grinding from causing errors along with accumulation of dust at a grinding part, so that the accuracy of grinding detection is improved; the cleaning device enables dust attached to the inner wall of the collecting pipe to be vibrated off, and the cleaning efficiency is improved.

The utility model relates to the technical field of cutting equipment, in particular to powerful magnet pressing and cutting equipment which comprises a machining platform, a magnet feeding device arranged below the machining platform, a cutting device arranged above the machining platform, a circular opening formed in the middle of the machining platform, and a plurality of gasket mechanisms arranged on the back face of the machining platform. The gasket mechanism comprises a gasket and a first air cylinder, the gasket is provided with an arc groove, and the magnet feeding device comprises a suction cup and a first driving mechanism. The cutting device comprises a cutting knife, a second driving mechanism used for driving the cutting knife to move in the Y-axis direction, a third driving mechanism used for driving the cutting knife to move in the X-axis direction and a fourth driving mechanism used for driving the cutting knife to move in the Z-axis direction. The magnet cutting device can automatically cut magnets, is high in efficiency, does not generate errors, and meets the automatic production requirements of factories.

The present invention discloses a fine blanking process method for a compressor intermediate plate blank, which is characterized in that it includes the following processes: material preparation → stamping → turning the outer circle → drilling small holes → double-sided grinding → cleaning → full inspection and packaging; wherein, the fine blanking process includes the use of a special composite mold, and the special composite mold includes an upper mold component and a lower mold component that are relatively arranged up and down; both the upper mold component and the lower mold component adopt a relatively scientific and reasonable structure to realize the synchronous processing of key holes and the shape. Its advantages are: it saves two processes of heating and correction, and the drilling process reduces the processing amount of 7 holes, greatly reduces and simplifies the processing process, reduces production costs, improves efficiency, and improves product quality; the key holes are processed synchronously with the shape, and no secondary positioning is required, there is no accumulated error, the shape and position dimensions are more stable, and the product yield is greatly improved; the consumption of materials and energy is greatly reduced, energy saving and environmental protection; it also solves the problem that the φ7 and φ9 holes have small margins and are difficult to form.

The invention relates to the technical field of spindle box structures, and discloses a high-power direct-drive motor spindle box structure which comprises a motor outer stator, the interior of the motor outer stator is communicated with a body, a protective shell is fixedly assembled on the inner wall of the body, and a first fastening bolt is arranged on the outer wall of the body. According to the spindle box structure, the motor outer stator, the body, the rotating shaft, the brake calipers and the brake disc are arranged, so that in the operation process of the spindle box structure, the motor outer stator is directly connected with the spindle box through the rotating shaft, and the brake disc and the brake calipers can guarantee the connection stability of the rotating shaft and the spindle box; according to the spindle box structure, the rotating shaft serves as the motor inner stator, the rotating shaft rotates when the motor rotor rotates, so that indexing of the rotating shaft is more accurate, errors generated in the transmission process are avoided, the motor torque is directly transmitted to the rotating shaft, the rotating shaft torque is large, intermediate torque consumption is avoided, and the practicability and the power performance of the spindle box structure are improved.

The invention relates to a bonding graph model prediction control method for a full-bridge inverter, and the method comprises the steps: splitting the bridge inverter into a combination form of buck and boost circuits, and building a bonding graph model of the bridge inverter; and based on the bonding graph model of the bridge type inverter, realizing model prediction control of the bridge type inverter. The method is suitable for a single-phase inverter and a three-phase inverter, the switching state of each phase of bridge arm does not affect the switching states of the other two phases of bridge arms, each phase of bridge arm can work independently, and three-phase independent control and decoupling of each phase of current are achieved; switching vectors do not need to be traversed, the calculated amount is small, and especially for an inverter system under digital control, a control system is simplified; the provided bonding graph model can be used for modeling a power switch device, the established model has no error, the control precision based on the model is high, the bonding graph model can be further applied to circuits with switch devices such as a switch power supply and a power electronic converter, and the application field of the bonding graph is expanded.

The application relates to the technical field of adjusting devices, and discloses a self-adaptive reactance adjusting device for a variable current voltage regulator, which comprises a screw cap, a containing cavity arranged in the screw cap, and a rotating rod, the screw cap is sleeved on the outer surface of the rotating rod and can rotate with the central axis of the rotating rod as the rotation center, and the rotating rod is arranged to rotate simultaneously with the rotating rod when the screw cap rotates. When the semicircular ring can move along the diameter direction, the friction block can be driven to move along the diameter direction of the semicircular ring, the friction block is driven to move close to or away from the friction ring by the semicircular ring, the force of the friction block abutting against the friction ring is increased or decreased, the size of the friction force during movement is changed, the operator can know that the generated friction resistance is different under different gear positions, the operator can notice the adjusting range and proportion, the operator can be prevented from making mistakes, and it is ensured that no error occurs in subsequent reactance adjustment.

The utility model discloses a skid-mounted oil well intelligent metering system, and relates to the technical field of oil and gas conveying metering, the input end and the output end of a filter are respectively connected with an inductor, the inductors are connected with a PLC control cabinet, the PLC control cabinet compares the values of the inductors at the input end and the output end to judge whether the filter is blocked or not, and if the filter is blocked, the PLC control cabinet is connected with the PLC control cabinet. When the PLC control cabinet detects that input and output flow velocity values or pressure values do not change, it means that the filter is not blocked, and the detection value of the mass flow meter is normal data, and when the input and output values detected by the PLC control cabinet change, the detection value of the mass flow meter is wrong data, and the data is abandoned, the filter needs to be opened, and the filter is not blocked. The solid loading object is taken out, and the mass flow meter is used for re-detection, so that the detection data of the mass flow meter has no error, and the technical problem that the flow meter on the existing oil well metering system is influenced by the solid loading object and the detection numerical value of the flow meter has error is solved.

The utility model relates to an insulation board positioning and supporting integrated tool, and belongs to the technical field of building construction. The tool comprises a bracket and a blocking piece, the bracket is mainly composed of a vertical batten and a horizontal batten which are of a T-shaped structure, screw fixing holes are formed in the vertical batten, and a long sliding groove is formed in the horizontal batten; the blocking piece is mainly composed of a horizontal bottom plate, a vertical rib plate and a semicircular baffle, and a positioning stud is arranged on the horizontal bottom plate. And the separation blade is detachably mounted and fixed on the bracket. By using the tool disclosed by the utility model, in the construction process of the shock insulation layer, the first-step heat insulation board pasting height is consistent and error-free, the distance is uniform, mortar joints are uniform, the use amount of heat insulation nails is reduced, and the heat insulation boards can be arranged according to a layout map. By using the tool, the construction cost is reduced, the construction progress is accelerated, and the engineering quality is improved.

The present invention relates to the field of liquid flow meter calibration, and is used to solve the problem that the calibration result of the flow meter is deviated due to the lack of detection of the error cause and the power supply environment during the measurement of the liquid flow meter. The present invention is specifically a liquid flow meter calibration system based on electrical parameter acquisition and analysis. In the present invention, the electrical parameters of the liquid flow meter are acquired, and the stability of the electrical parameters is analyzed to ensure that the stability of the electrical parameters of the liquid flow meter meets the requirements. After the operating stability of the liquid flow meter meets the standards, the flow accuracy result is judged and output, so as to avoid the calibration of the liquid flow meter being disturbed by the electrical parameters and causing errors in the judgment result. The judgment of the stability of the electrical parameters includes the stability of the power supply and the stability of the coil, so as to facilitate the maintenance and calibration of the liquid flow meter by the staff. When the liquid calibration of the liquid flow meter is performed, the mass method, the static volume method and the dynamic volume method are combined to ensure the accuracy of the calibration result.

The utility model discloses a wall perpendicularity measuring device for building construction, which belongs to the technical field of building construction and comprises two groups of vertical plates, and one end of the side surface of each vertical plate is movably provided with a foldable first support plate and a foldable second support plate respectively. A horizontal adjusting assembly for adjusting the angles of the first supporting plate and the second supporting plate is arranged on the side face of the vertical plate, and horizontal debuggers are arranged in the first supporting plate and the second supporting plate correspondingly. According to the utility model, a vertical standard is formed through the laser transmitter and the laser receiver, so that data measurement is more accurate, and meanwhile, the displacement sensor can obtain accurate data; then two right-angle sides of a right triangle are formed through the distance difference between the laser transmitter and the laser receiver and the wall and the distance between the first supporting plate and the second supporting plate, accurate wall perpendicularity can be easily obtained through mathematical knowledge, installation is easy, and the angle of the first supporting plate and the angle of the second supporting plate can be conveniently adjusted.

The invention relates to the technical field of cameras, and provides an image acquisition method, device and system, electronic equipment and a medium. Comprising the steps of performing clock synchronization on a first sensor and a second sensor; the first sensor interrupts the signal to trigger the second sensor to collect images; and the main control chip sends the first sensor data, the image and the timestamp to the robot host. According to the method, two sensors are selected to be combined, the motion state of the sensor can be accurately measured, and accumulated errors and noise do not exist.

This invention relates to the field of biotechnology, specifically providing a method for identifying salt tolerance genes in wild-type or mutant rice. OsMT9 Molecular marker primer pairs and their applications. The molecular marker primer pairs consist of the primer pairs shown in SEQ ID NO. 9-10. The primer pairs provided by this invention can be used to distinguish rice salt tolerance genes. OsMT9 Wild-type or mutant strains can be used in salt-tolerant rice populations for assisted breeding. They can be identified in hybridization breeding, backcross segregation improvement, etc., accurately distinguishing between heterozygous and homozygous genotypes, improving breeding efficiency, and having important practical significance for high-yield, stable-yield and stress-resistant rice breeding.

The utility model relates to the technical field of bending machines, and discloses a multi-shaft automatic positioning electro-hydraulic bending machine which comprises an electro-hydraulic bending machine body, the bottom of the electro-hydraulic bending machine body is composed of a base, the top of the electro-hydraulic bending machine body is composed of a unit, a sliding machine plate is installed on the front face of the unit, and a hydraulic system is installed in the unit. According to the multi-shaft automatic positioning electro-hydraulic bending machine, the multi-shaft positioning effect is improved by arranging the multi-shaft positioning auxiliary mechanism, the multi-shaft positioning auxiliary mechanism adopts an independent shaft body pushing set, each set of positioning module is independently controlled, and an electrical system and a hydraulic system are adopted for control; according to the numerical control bending machine, the moving distance of the shaft rod can be controlled more intelligently, the sheets of the same type are produced through numerical control programming control, the positioning mechanism can conduct numbering automatically according to data, workers only need to fix the sheets to the pressing plate, manual size control is not needed, the bending precision is greatly improved, and material loss is reduced.

The utility model relates to the technical field of indoor decoration equipment, and discloses a measuring device for indoor decoration design, which comprises a measuring plate, a sliding groove is arranged on the measuring plate, an extension plate is connected in the sliding groove in a sliding manner, a rack is fixedly connected on the extension plate, and the rack is fixedly connected on the measuring plate. The measuring plate is rotatably connected with a gear and is in meshed connection with the rack, the compensation assembly comprises an L-shaped bottom plate fixedly connected with the measuring plate, the two sides of the L-shaped bottom plate are fixedly connected with ruler plates through connecting frames, the ruler plates are movably connected with the measuring plate, the L-shaped bottom plate is movably connected with a sliding block, and the sliding block is movably connected with the measuring plate. The L-shaped bottom plate is fixedly connected with a sliding block, connecting rods are symmetrically hinged between the sliding block and the measuring plate through hinge pieces, one side of the sliding block is fixedly connected with a connecting rod, the connecting rod is in sliding connection with the L-shaped bottom plate, the connecting rod is sleeved with a spring, and the problem that the quality of indoor decoration is reduced due to the fact that the measuring result is not accurate is effectively solved.

The present invention discloses a composite material continuous paving alignment tool and a paving alignment method, comprising a supporting frame, a paving platform, a linkage alignment baffle, a diaphragm window, a driving mechanism and a vacuuming mechanism; the paving platform is arranged in the supporting frame; the diaphragm window is hinged on the supporting frame; one end of the driving mechanism is connected to the supporting frame, and the other end is hinged to the diaphragm window; the linkage alignment baffle is slidably arranged on the supporting frame and one end can extend to the paving surface of the composite material on the paving platform, and the linkage alignment baffle is used to ensure the alignment of the composite material during continuous paving; the driving mechanism is used to drive the linkage alignment baffle to slide on the paving platform; a sealing film for sealing the composite material after paving is completed is connected to the diaphragm window; the vacuuming mechanism is connected to the supporting frame and is used to vacuumize the sealing film and the composite material after sealing. The tooling structure of the present invention is simple, and the method of the present invention can improve the composite material paving efficiency and reduce paving errors.

This invention discloses a method for automatic gyroscope drift compensation in a high-precision optical axis motion control device, belonging to the field of servo turntable control technology. This invention uses a three-axis fiber optic gyroscope mounted on the pitch axis to sense spatial angular velocity. Fiber optic gyroscopes eliminate errors caused by friction from rotating mechanical parts, resulting in high angular velocity measurement accuracy and a wide range of measurable angular velocities. The laser gyroscope used in this invention has a velocity measurement range of ±600° / s and a minimum sensitive angular velocity of less than ±0.001° / s. Fiber optic gyroscopes have a wide operating temperature range, from -50℃ to 60℃, requiring no heating, and exhibit short start-up time and fast system response. This invention proposes a method for automatic gyroscope drift compensation in a high-precision optical axis motion control device, employing a two-stage coarse-fine compensation method to achieve rapid compensation for fiber optic gyroscope drift. It first performs a coarse compensation, followed by up to five (the number of times is configurable) fine compensations. The algorithm is simple and efficient, with short compensation time, and does not consume significant CPU resources for complex calculations, thus improving optical axis stability.

This invention discloses an automatic component leveling system, application, and method based on a distance measuring device. It solves the problem in existing technologies where leveling side beams requires workers to use levels or similar instruments for measurement, resulting in low measurement accuracy. The system offers the advantages of high accuracy and high efficiency. The specific solution is as follows: An automatic component leveling system based on a distance measuring device includes a worktable supporting multiple drive mechanisms. These drive mechanisms are placed at the bottom of the component. Multiple first distance measuring sensors are placed on the side of the component along its length. The drive mechanisms are arranged along both sides of the component's width. The first distance measuring sensors are located on the outer side of the component's side. The multiple first distance measuring sensors are arranged vertically to obtain the distance between the first distance measuring sensors and the upper and lower sides of the component. The first distance measuring sensors send the acquired distance information to a control unit. The control unit is connected to the drive mechanisms and adjusts the actions of the multiple drive mechanisms.

The invention discloses an economic dispatching method for a preset time distributed power system based on a fixed demand. The method comprises the steps of 1, describing an economic dispatching problem as a convex optimization problem with fixed constraints, and constructing a model of a power system; 2, based on the model of the power system, designing a preset time distributed economic dispatching algorithm under fixed constraints, and converging to an optimal solution before time Tc; and step 3, applying the algorithm to a model of the power system, and solving a convex optimization problem under a fixed demand in the power system, that is, optimizing the output power of each generator, and minimizing the sum of the costs of all generators under the condition of ensuring that the output of all generators meets the demand. According to the method, a central processing unit is not needed, each node in the network only needs to exchange own state information with the neighbor node, the optimal value of the economic dispatching problem can be solved, the communication cost is reduced, and the system energy is saved. Meanwhile, the system can accurately converge to the optimal solution before the predefined time.

The application relates to a power grid project closed-loop management file management system, which comprises a file import module, a project classification module, a file encryption module, a file management module, a permission management module and a parsing management module; 1. The power grid project file is split into multiple parts in a feature extraction mode, and when calling is needed, the corresponding associated part is directly called, and the calling and feedback of one matter are completed through the association relationship between terminals and files; 2. The file original is uniformly managed in an association verification mode, the uniqueness of the file in the system is ensured, the problem that information asymmetry causes manual calling is avoided, the modification process of the file can be traced, and therefore, file version errors or information errors caused by irregular modifications do not occur in the project process. 3. The multi-level storage of the key and the multi-party storage of the ciphertext improve the security of the system for power grid project file management.

The invention belongs to the technical field of tower equipment maintenance, and particularly relates to a tower cross arm mounting robot. Comprising a self-adaptive guide walking mechanism, a ring gear steering mechanism and a magnetic type self-resetting locking device which are sequentially connected from bottom to top, and the self-adaptive guide walking mechanism is used for walking on a tower; the circular ring gear steering mechanism is arranged on the self-adaptive guide walking mechanism, two sets of magnetic attraction type self-resetting locking devices are arranged on the circular ring gear steering mechanism in parallel, the circular ring gear steering mechanism is used for driving the magnetic attraction type self-resetting locking devices to rotate in the circumferential direction, and the two sets of magnetic attraction type self-resetting locking devices are used for fixedly installing the cross arm on a tower. Effective passing of cylindrical rod-shaped building surfaces is achieved through the self-adaptive guide walking mechanism, due to the design of the annular rack, the self-adaptive guide walking mechanism can be well suitable for entering a to-be-operated space, and the self-adaptive guide walking mechanism has the advantages of being good in environmental operation adaptability, stable in design structure, easy in function implementation and the like and is wide in application range.

The utility model discloses an inner wall spraying device for groove pipe fitting processing, which comprises a workbench, the upper surface of the workbench is provided with a mounting groove, one end in the mounting groove is fixedly provided with a power motor, and the power end of the power motor is fixedly connected with a threaded rod. The end, away from the power motor, of the threaded rod is rotationally connected to the other end of the interior of the mounting groove, the surface of the threaded rod is sleeved with a movable seat in a threaded mode, a fixing structure is arranged on the upper surface of the movable seat, a supporting seat is fixedly connected to the upper surface of the workbench, and a spraying structure is arranged on the front face of the supporting seat. By arranging the fixing structure and the spraying structure, the device can fix grooved pipes of different sizes, the device is more stable during spraying, errors cannot be generated in the spraying process, and by arranging the dust removal structure, the device can clean the grooved pipes before spraying, and the influence of dust on the spraying effect is avoided.

The invention discloses a pavement volume generation and quantity calculation method based on matrix distribution. The method comprises the following steps: S1, extracting data of points from CAD (Computer Aided Design) to Excel; s2, importing the data of the Excel into the Dynamo; s3, performing parametric modeling according to the imported data; s4, exporting the model after modeling in the S3 to Revit; and S5, carrying out quantity calculation in Revit: selecting all pavement models of the same type, and carrying out one-key quantity calculation.

The invention provides a neutral position self-learning method for a rear wheel steering mechanism. The neutral position self-learning method comprises the steps that S1, a motor assembly of the rear wheel steering mechanism is provided with an MPS sensor; s2, a motor drives a rack of a rear wheel steering mechanism to move leftwards to a left limit position and a right limit position, an MPS sensor records an MPS measured value of the rack moving leftwards to the left limit position, and a rack position measured value is calculated; s3, the deviation between the middle point of the rack and the initial scale when the LPS sensor is powered on is calculated; s4, correcting the actual position of the rack by using the deviation between the middle point of the rack and the initial scale when the LPS sensor is electrified, and correcting the initial scale when the LPS sensor is electrified; s5, calculating a linear error of the LPS sensor; and S6, repeating the step S5 for multiple times, and establishing a mapping relationship between the LPS measurement values of the LPS sensors when the rack moves to different positions and the linear errors of the corresponding LPS sensors. According to the invention, the accuracy of neutral position calibration of the rear wheel steering mechanism is ensured, and the error of neutral position deviation compensation is reduced.

The application relates to a kind of dual-fuel container ship side section precision control method and side section, which divides the side section of dual-fuel container ship into double-bottom segment, platform plate group, side section middle group, inclined side plate middle group and bulkhead middle group, respectively, to construct by plate assembly, and the main dimension, levelness, internal component perpendicularity and flatness after welding of each part are monitored during the construction process; the installation position line of platform plate group, inclined side plate middle group and bulkhead middle group is drawn on double-bottom segment, and platform plate group is installed in sequence, then side section middle group, inclined side plate middle group and bulkhead middle group are installed, the corner joint simulation is carried out before the installation of inclined side plate middle group and bulkhead middle group, and finally, section knee plate is installed at the angle position between platform plate group and double-bottom segment. Through the precision control method of the application, the construction of the side section of dual-fuel container ship is carried out, the precision is controlled during the construction process, and the precision of the side section of dual-fuel container ship after final assembly is met.

The present invention discloses a synchronous closing pulse moment calculation method, system, storage medium and device, and relates to the technical field of closing pulse moment calculation. It includes setting the allowable value of pressure difference and the allowable value of frequency difference, testing the sampling point of the closing circuit action time tn; collecting the instantaneous value of three-phase voltage, and calculating the voltage amplitude and frequency; calculating the frequency difference and voltage amplitude difference on both sides; checking whether the voltage amplitude difference and frequency difference on both sides meet the allowable value, and calculating the closing time. The present invention does not have the error caused by the frequency change of the Fourier algorithm, improves the accuracy of the synchronous closing pulse sending time calculation, and reduces the impact when the unit is connected to the grid.