43results about How to "Improve fine-tuning" patented technology

The invention discloses a dynamic sliding mode voltage control method for a DC-DC boost converter based on an interval type-II adaptive fuzzy neural network, and relates to the technical field of power electronic control. The invention aims to solve the problem sliding mode control on the DC-DC boost converter based on a fuzzy neural network lacks robustness to complex uncertainty and autonomous learning capability of the fuzzy neural network in the prior art. The method comprises the steps of obtaining operating parameters of the DC-DC boost converter, and establishing a dynamic model of theDC-DC boost converter; adopting a tracking error dynamic system containing a dynamic sliding mode control law to track the output voltage in the dynamic model; designing a sliding mode surface according to the tracking error dynamic system to obtain a dynamic equivalent control law, and constructing a dynamic sliding mode controller based on the interval type-II adaptive fuzzy neural network according to the dynamic equivalent control law; and controlling the dynamic sliding mode control law through the controller to enable the output voltage in the tracking error dynamic system to be equal tothe expected voltage. The control method is used for controlling output voltage.

The invention discloses a facial recognition method and system for face masks and the method comprises the steps: building a face-eyebrow multi-granularity recognition model based on ArcFace, and improving the mask face recognition effect through employing an eyebrow fine feature structure. For the current situation that a facial recognition data set training model for face masks is urgently needed at present, multiple face data set construction methods for face masks are provided; on this basis, a complete mask face recognition system is formed, and the system comprises three main links of model construction, model training and face recognition. The facial recognition precision is remarkably improved, and the established data set effectively supports the technical development so that themask faces can cover faces.

The invention discloses a meta-knowledge fine tuning method and platform for a multi-task language model, and the method comprises the steps: highly-transferable common knowledge, i.e., meta-knowledge, on different data sets of the same kind of tasks are obtained based on cross-domain typicality score learning; and learning processes of similar tasks on different domains corresponding to differentdata sets are mutually associated and mutually enhanced, so that the fine adjustment effect of similar downstream tasks on different domain data sets in language model application is improved, and the parameter initialization capability and generalization capability of a universal language model of similar tasks are improved. According to the method, fine adjustment is carried out on a downstreamtask cross-domain data set, the effect of a compression model obtained through fine adjustment is not limited by a specific data set of the task, on the basis of a pre-trained language model, fine adjustment is carried out on a downstream task through a meta-knowledge fine adjustment network, and therefore a similar downstream task language model irrelevant to the data set is obtained.

The invention relates to the field of air conditioners, and discloses a method and a system for improving comfort control precision of a direct-current variable-frequency air conditioner. According tothe method and the system, under the condition that the cost of a hardware control scheme is not increased, the calculation and control precision of the PMV can be greatly improved, and the comfort level of a user for using the air conditioner is improved to the largest extent. The method comprises the following steps that firstly, a temperature-AD sampling value relation table is obtained by utilizing an air conditioner temperature-resistance relation table, and the indoor temperature resolution is improved through the temperature-AD sampling value relation table; then by adopting the mode of using the frequency being integer multiples of 0.1Hz for controlling the operation of a compressor in an increment / decrement mode, the fine adjustment capacity of the compressor is improved; and finally, under the condition that the cost of the hardware control scheme is not increased, the calculation and control precision of the PMV can be greatly improved, and the comfort level of the user forusing the air conditioner can be improved to the largest extent. The method and the system are suitable for controlling the comfort of the direct-current variable-frequency air conditioner.

The invention discloses an image pickup device and an image pickup method. The image pickup method is used for realizing the automatic adjustment of related parameters of the image pickup device. The image pickup device comprises a gravity sensor and a central processor, wherein the gravity sensor is used for monitoring physical attribute parameter values of the image pickup device; the central processor is used for analyzing the physical attribute parameter values according to the physical attribute parameter values monitored by the gravity sensor; the gravity sensor is connected with the central processor through a bus I2C. According to the image pickup device and the image pickup method, the gravity sensor is arranged in the image pickup device, and the physical attribute parameter values acquired by the gravity sensor are sent to the central processor for analyzing, so that the related parameters of the image pickup device are subjected to automatic and accurate adjustment according to the physical attribute parameter values, and thus, the shooting quality of the image pickup device is improved.

The invention discloses a fixing and leveling device and method for repairing turbine blades through SLM. The device comprises a blade clamping mechanism, a first angle adjusting mechanism and a second angle adjusting mechanism. The device has two mutually orthogonal rotational degrees of freedom, and can clamp the turbine blades and adjust the posture of the turbine blades in two mutually orthogonal directions. According to the device, the large rotation amount is converted into the small rotation amount through a transmission structure, and fine angle adjustment can be achieved; and moreover, scale marks are arranged, so that quantitative angle adjustment can be realized. The device is simple in structure, easy and convenient to operate and disassemble, and capable of conveniently and rapidly achieving clamping and posture adjustment of the turbine blades.

The invention relates to a conduction oil energy storage heat exchange system and a using method thereof. The conduction oil energy storage heat exchange system comprises a low-temperature conductionoil tank, a high-temperature conduction oil tank, a first heat exchanger, a second heat exchanger, a first low-temperature conduction oil pipeline, a second low-temperature conduction oil pipeline, afirst high-temperature conduction oil pipeline, a second high-temperature conduction oil pipeline and a high-temperature conduction oil tank and low-temperature conduction oil tank communicating pipeline, wherein the low-temperature conduction oil tank is connected with the first heat exchanger through the first low-temperature conduction oil pipeline; the first heat exchanger is connected with the high-temperature conduction oil tank through the first high-temperature conduction oil pipeline; the high-temperature conduction oil tank is connected with the second heat exchanger through the second high-temperature conduction oil pipeline; and the second heat exchanger is connected with the low-temperature conduction oil tank through the second low-temperature conduction oil pipeline. The conduction oil energy storage heat exchange system is reasonable in structural design, convenient to operate and use, high in automation degree and intelligentization degree and the like, and can effectively overcome the defect that a conduction oil energy storage technology is high in maintaining cost and likely to age and deteriorate in the application process.

The invention discloses a method for enhancing fuzzy weighing of a pulsator washing machine. The method includes the steps: judging whether actual water inlet amount under a first gear is larger thana set water level value under the gear or not, and sequentially increasing water level gear by gear if the actual water inlet amount under the first gear is larger than the set water level value underthe gear; judging whether additionally increased flow of a washing machine is larger than a set water level value of progressive increase of each gear or not, continuing to increase the gear if the additionally increased flow of the washing machine is larger than the set water level value, adjusting a current N-2 gear to reach an N gear if the additionally increased flow of the washing machine islarger than the set water level value or a current gear is equal to an N-2 gear, and decreasing the water level of a half gear under a washing gear in each rinsing process. According to the method for enhancing fuzzy weighing of the pulsator washing machine, the weight and materials of clothes in the washing machine are judged, water level is adjusted, influence of resistance generated by a pulsator in rotating on judging accuracy is avoided, washing water level corresponding to different clothes kinds is corrected to some extent, accurate judgment of the pulsator washing machine for the weight and the kind of the clothes in a washing machine drum is enhanced, and adjusting accuracy of the water level is improved.

The invention belongs to the technical field of experimental teaching equipment, and discloses an experimental teaching device for measuring light velocity in an optical fiber. The device comprises amodulation signal source, a modulation signal electronic-to-optical conversion and optical signal transmission module, fiber channels, a modulation signal photoelectric conversion and pulse width regeneration adjustment circuit, an XOR logic digital fiber length measurement module and an optical power meter. Under the condition that the circuit delay is constant, the time delay of a receiving endregenerative signal relative to a transmitting end reference signal is measured twice by the fiber channels with lengths L1 and L2 respectively, and the transmission time of a modulation signal in theL1-L2 fiber length is obtained; the length of the optical fiber is measured by an XOR logic digital fiber length measurement instrument; the light velocity in the optical fiber can be calculated according to the transmission time of an optical signal in the optical fiber and the optical fiber length. The experimental teaching device for measuring the light velocity in the optical fiber has the advantages that the physical concept is clear, the physical phenomenon is visual, the measurement technology is novel, the data is stable, the result is accurate, and the device is an effective teachingplatform for cultivating students' sense of innovation consciousness and capacity.

The invention relates to the technical field of aqueduct construction, in particular to a cast-in-place aqueduct supporting frame design process based on a BIM technology, and the process comprises the steps that S1, a central control module obtains basic information of an aqueduct and an aqueduct supporting frame and carries out preliminary structural design after obtaining is completed; s2, the central control module preliminarily designs the sizes of internal parts of the channel steel, the transverse rod and the vertical rod according to the basic information of the channel steel; s3, the center control module imports the calculated component size into a BIM system and simulates the component size; and S4, the central control module judges whether the design is completed or not according to whether the adjusted construction process and model simulation meet the standard or not. A supporting frame structure of the cast-in-place aqueduct supporting frame design process based on the BIM technology comprises channel steel, transverse rods, vertical rods and an operation platform. According to the method, more accurate modeling of the cast-in-place aqueduct supporting frame is achieved, the stability of the supporting frame is improved, and the adaptability of the supporting frame to different environments and weather conditions is improved.

The invention provides a multifunctional glass cutting device. A vertical guiderail is installed on a horizontal guiderail in a sliding way, a knife rest is installed on the vertical guiderail in a sliding way, a tool bit and an angle scale are respectively installed at the top and the bottom of the knife rest; the tool bit is located at the bottom of the knife rest in the linear cutting, the cutting position is determined by moving the vertical guiderail, and the straight cutting is implemented by moving the knife rest; the knife rest is installed on the vertical guiderail by rotating by 180degrees in the circular cutting or angular cutting, the angle scale is located at the bottom of the knife rest, the tool bit is installed on a rotating rod in a sliding way, the angle scale is taken as the center of a circle, the radius is determined according to the position of the tool bit in the rotating rod, the rotating rod is rotated to finish the circular cutting; the angle of the rotatingrod is also determined according to the angle scale, the tool bit slides along the rotating rod to cut to finish the angular cutting, the device integrates measuring and cutting, the cutting process of the glass is simplified, the working efficiency is improved, and the operation is simple.

The invention discloses a double vertical clamping structure for finely adjusting a double-worm-wheel fly cutter radially. A center hole which faces the active end and is concentric with a rotating central line of a cutter bar is formed in the passive end of the cutter bar, two parallel two-section stepped concentric holes for mounting, clamping and finely adjusting the fly cutter are radially formed along the rotating central line of the cutter bar, large holes of the two-section stepped concentric holes are cylindrical holes, small holes of the two-section stepped concentric holes are screwthrough holes, and the center distance between the two-section stepped concentric holes is the axial tooth pitch of a working worm; two sections of threads which are the same in screwing direction anddifferent in screw pitch are arranged on a locking screw and correspondingly connected with the screw through holes and a screw hole formed in a fly cutter round straight handle, so that the fly cutter is never loosened after being finely adjusted and clamped in the radial direction of the cutter bar; and a positioning clamping mechanism is arranged in the center hole, the oblique end faces of the opposite ends of a positioning jacking rod slide onto the obliquely-beveled plane of the fly cutter round straight handle to form close face contact under the combined action of the locking screw and a force applying component, and the fly cutter is fastened in the corresponding cylindrical hole and located at the correct position. The radial fine-adjusting and positioning double vertical clamping technical scheme is suitable for high-precision and large-cutting-force rolling cutting of multi-head worm wheels.

The invention discloses a novel tobacco product containing tobacco particles and a manufacturing method thereof. The novel tobacco product comprises a tobacco paper tube, wherein a fragrance producingsection, a particle section, a particle rod, a hollow tube section and a filtering section are sequentially arranged in the tobacco paper tube; the fragrance producing section, the particle section and the particle rod are compounded and rolled to form a first forming section; the hollow tube section and the filtering section are compounded and rolled to form a second forming section; and the first forming section and the second forming section are twisted and connected to form. The novel tobacco product has the advantages that the particle end sealing is realized by filament-shaped materialsand particle curing; the existing material blocking form is replaced, so that the end sealing on the particles is simpler; the combined application of different fragrance producing material forms isrealized; the structures of the particle section, the particle rod, the filtering section and the like are installed, so that the multi-structure fragrance holding and fragrance fixation are realized;the multi-section fragrance release can be realized; the particles can be used as fragrance supplementing and releasing materials and can also be used as temperature lowering materials; and the sensory experience and the fine regulation and control can be effectively improved.

The invention relates to a data processing method and device, a model training method and device and electronic equipment. The data processing method comprises the steps of obtaining a first feature of m training data in a training data set, wherein m is an integer greater than or equal to 1; n pieces of target data with second features are obtained, so that model parameters of the pre-training model are adjusted based on at least part of data in the n pieces of target data, and n is an integer larger than or equal to 1; wherein the first feature and the second feature meet a similarity requirement, the pre-training model is trained based on a training data set, and the target data has no label information or has label information. According to the invention, the adaptability of the training data can be improved, so that the model training effect is improved.

The invention discloses a multi-functional paper-plastic cleaning separation and pulp quenching equipment which comprises a barrel containing a rectangular cushion and a water collecting hood. The feed port is arranged above the barrel, and the discharge port is arranged below. Inside the barrel installed a main shaft with friction blade. The inner part of the water collecting hood is provided with a screen mesh with a vertical steel plate, where the plate is arranged with racks meshing with cylinder wheel gear on the gear shaft, and on the other end of the gear shaft is provided with the second bevel gear in order to mesh with the first bevel gear on the lifting motor. A rectangular buffer hood is provided with a transparent window and an opaque telescopic curtain, the transparent window is symmetrically provided with a chute; the telescopic curtain is composed of a first curtain plate and a second curtain plate, the right side of the first curtain plate is provided with a groove, and the left side of the second curtain plate is formed with protrusion. The main shaft is provided with an optical axis on a partition plate which is composed of a connecting plate and a rectangular plate and an arc plate. The device has the advantages of anti-stuck, and convenient of checking the internal operation of the equipment by adjusting the height of the screen mesh.

The invention discloses a high-stability grating splicing five-dimensional adjusting mechanism, which comprises a base, a grating splicing unit, a substrate, stable fine adjustment self-locking mechanisms, a spring pre-tightening component, a stable fine adjustment mechanism and a slidable spherical hinge fine adjustment mechanism, wherein the stable fine adjustment mechanism and the slidable spherical hinge fine adjustment mechanism are arranged at the bottom of the grating splicing unit, the three stable fine adjustment self-locking mechanisms are distributed at the back of the grating splicing unit in an isosceles triangle shape, and the stable fine adjustment mechanism, the slidable spherical hinge fine adjustment mechanism and the stable fine adjustment self-locking mechanisms are jointly used for five-dimensional adjustment decoupling. According to the invention, pre-tightening force is applied to the grating unit and the adjusting mechanism through the spring to complete five-dimensional stable fine adjustment of the grating unit, it is guaranteed that fixing of the grating unit does not generate over-constraint through the flexibility of the extension spring and the slidable spherical hinge mechanism, and interference does not occur in the multi-dimensional adjusting process of the grating unit.

The invention discloses a plasma generator with a metal wire structure embedded in the propellant powder, which is characterized by comprising an electrode stem, a nut pressing sheet, a cathode plug, a capillary tube, a propellant grain and a metal wire, a composite structure mode that the metal wire is embedded into the propellant grain is adopted, and the formula composition, the outer diameter, the hole number, the inner hole diameter and the length of the propellant grain are adjusted, so that the efficient ablation combustion-supporting effect on propellant powder during electric explosion of the metal wire can be achieved; the structural mode that the inner wall of the capillary tube is coated with energetic substances is adopted, and effective ignition substances and ignition pressure of plasmas can be adjusted and controlled by selecting the coating substances and adjusting the thickness of a coating layer; the structural mode that the multiple metal wires penetrate through the propellant grain is adopted, the material, the diameter and the number of the metal wires are optimized, and the strength of electric explosion can be well controlled. The problems of multi-parameter accurate adjustment and control of the plasma generator and control and efficiency of plasma ignition are solved.

The invention discloses a preparation method of novel earthworm powder, and the preparation method comprises the following steps: (1) preparing a primary earthworm pulp; (2) adding auxiliary materials for preparing an compound earthworm pulp; (3) conducting purifying and filtering to obtain a purified earthworm pulp; (4) conducting dewatering and adding auxiliary materials for the second time to obtain a half-finished earthworm solution; and (5) conducting spray drying to obtain the finished earthworm powder. The preparation method of the earthworm powder provided by the invention has the characteristics of simple process, sanitation, environmental protection and suitability for large-scale production. Especially, the spray drying technique is adopted, the activity and nutrition of the earthworm powder are ensured, and the product has a wide range of application and can meet the requirements of multiple aspects of foods, cosmetics, health product additives, medicine raw materials, animal husbandry and the like.

The invention discloses a distraction instrument for an operation. The instrument comprises a closed space defined by steel cables, two ends of each steel cable are connected to quick elastic structures, each steel cable is respectively connected to a drag hook ball body and a limiting piece in series, the limiting piece is hourglass-shaped, the spherical surface of the drag hook ball body is tightly attached to the peripheral wall of the limiting piece, a groove body is formed in the drag hook ball body, the left side and the right side of the groove body are side walls, a rotating shaft is arranged between the left side wall and the right side wall, and a drag hook is perpendicular to the rotating shaft. The instrument is innovative in structure, the operation field can be fully exposed,the surgical convenience of doctors is improved, the two steel cables form a closed and stable interval through the elastic structures, the drag hook does not need to be held by hand in the operation, and inconvenience caused by continuous drag hook in the operation is reduced. According to the size of a wound surface, drag hook ball bodies and limiting pieces with various sizes and models are respectively arranged, the drag hook ball bodies and the limiting pieces are tightly attached, sideslip and disengagement are avoided, the wound surface distraction stability is guaranteed, the distraction area is large, the local adjustability is high, the operation field can be fully exposed, and the instrument is provided with a quick-tightening and quick-loosening device, so that adjustment is facilitated at any time during an operation to fully meet the requirement for exposing the operation field.

The invention provides a DH-series manual grain drawing and blunt knife all-in-one machine with angle convenient to adjust. The DH-series manual grain drawing and blunt knife all-in-one machine comprises a supporting mechanism; a mechanical supporting mechanism is stably supported and mounted on the side of the supporting mechanism through supporting brackets, and a blunt knife cutting mechanism is fixedly mounted at one end of the mechanical supporting mechanism through a hinged cantilever; a dust collection mechanism is fixedly mounted at one end of the blunt knife cutting mechanism, an atomization mechanism is fixedly mounted on the surface of the side wall of the dust collection mechanism, the supporting brackets are fixedly mounted at the four corners of the bottom of the supporting mechanism correspondingly, and dust collection boxes are fixedly mounted on the surfaces of the bottoms of the supporting brackets correspondingly. According to the DH-series manual grain drawing and blunt knife all-in-one machine with the angle convenient to adjust, external dust can be conveniently sucked in and then machined through the arranged supporting mechanism, the supporting brackets andthe dust collection boxes, and in the machining process of the surface layer of a solid wood floor, composite machining treatment can be conducted on materials generated on the surface of the wood floor through the arranged supporting brackets and the dust collection boxes.

The invention discloses a clamping structure of a double-worm gear fly-cutter. A center hole concentric with a cutter bar is formed in the driven end of the cutter bar, two parallel mounting holes formounting the fly-cutter are formed in the radial direction of the cutter bar and communicated with the center hole, and the center distance between the mounting holes is the axial pitch of a workingworm; a positioning and clamping mechanism is arranged in the center hole, a force application component, a plurality of balls, a positioning ejector rod, fly-cutters, an elastic ejector rod and the like are sequentially arranged on the end face of the driven end, axial force is generated by the force application component, the end faces of the opposite ends of the positioning ejector rod slide tothe sliced plane of a straight handle of each fly-cutter to form tight surface contact, the two fly-cutters can be fastened in the corresponding mounting holes, and the cutting edge part of a fly-cutter head is positioned at the same part as the working worm. According to the technical scheme, the strength and rigidity of the cutter bar are weakened least, the structure is simple, use is convenient, repeated positioning precision is high, and clamping force is large and reliable; and due to the fact that the clamping parts are arranged in the center hole, conditions are created for achievingmulti-fly-cutter machining of part of the integral multi-head worm gear hob with the handle.

The invention discloses a cell segmentation fine tuning method, which comprises the following steps: S1, a pre-training stage: forming a pre-training set by taking known cell image data of different styles as pre-training data, and performing model training by utilizing the training set to obtain a pre-training model; s2, a fine tuning stage: marking at least 8 cell images from the to-be-segmented cell images of the new style as a shot data set, and taking the remaining cell images as a query data set; performing fine tuning and retraining on the pre-training model obtained in the step S1 by utilizing a shot data set to obtain a training model; and S3, an inference stage: inferring and segmenting the cell image in the query data set in the step S2 by using the training model obtained in the step S2. Compared with the prior art, the method has the advantages that cell segmentation of cell images of different styles can be realized, the application scene of a universal algorithm is widened, and the segmentation performance of the universal algorithm is improved.

The invention discloses a washing control method of a washing machine. The washing machine comprises a motor, a clutch, a microcomputer and an inner barrel driven by the motor and the clutch to rotate; the microcomputer is provided with a control program; the washing machine further comprises a detection circuit used for detecting the counter electromotive force pulse number of the motor and a motor control circuit used for controlling the motor to rotate forwards and backwards; and the detection circuit and the motor control circuit are in communication connection with the control program. The washing control method of the washing machine comprises the steps that under the state that no water exists in the inner barrel and clothes are stored in the inner barrel, the motor driving the inner barrel to operate operates according to forward and reverse rotation operation parameters set by the control program, and after the motor stops, the detection circuit detects the counter electromotive force pulse number of the motor. The washing machine has a fuzzy function during automatic entry; the fuzzy principle is that the counter electromotive force pulse number is measured through positive and negative rotation of the motor in the water-free state, the control program judges the weight and the material of the clothes in the inner barrel of the washing machine, and the water level is automatically adjusted; and the washing machine further has one-key washing and dewatering functions.

The invention relates to a double vertical clamping structure of dual-worm-gear fly knives. A center hole concentric with a cutter rod is mounted in a passive end of the cutter rod, two parallel connection through holes for mounting and tensioning the fly knives are mounted in the radial direction, and communicate with the center hole, the center distance between the two connection through holes is the axial tooth distance of one work worm, planes are mounted on two ends of the connection through holes, tensioning screws are mounted on the planes on the same side, and connect with screw holesin a fly knife straight handle, a positioning clamping mechanism is mounted in the center hole, a force exertion part, multiple round balls, positioning ejector rods, the fly knives, an elastic ejector rod and the like are sequentially mounted on the end face of the passive end, under the effect of the tensioning screws and the force exertion part, opposite end inclined end faces of the positioning ejector rods slide to a fly knife straight handle slope cutting-flat plane to form tight face contact, the two fly knives are fastened in the corresponding connection through holes, cutting blades of the fly knives are partly located on the portion the same with the work worm, and the positioning and dual vertical clamping technical scheme is suitable for rolling cut of a multi-head worm gear with the large cutting force, modulus and lead angle.