63results about How to "Meet the speed" patented technology

The invention discloses a bionic underwater glider, which comprises a glider main body, a buoyancy changing device, an empennage and a gliding wing; the buoyancy changing device is arranged on the glider main body, and changes the net buoyancy of the bionic underwater glider by changing the displacement volume; The tail fin is arranged on the tail of the glider main body through a tail fin swing mechanism to realize the back and forth swing function of the tail fin; Rotate function. Also disclosed is a bionic underwater glider propulsion method. The present invention can effectively cooperate in different working modes, so as to realize mixed propulsion and enhance the ability of diverse observation tasks. It has high propulsion efficiency, strong maneuverability, flexibility of bionic propulsion and high efficiency of gliding propulsion.

The invention belongs to the image processing technology field, and more particularly, to a multi-characteristic integrated image matching method, comprising the following steps: 1) processing a targeted image to obtain the characteristics of the interest points, the edges, the regions and the HOG; 2) based on the initial comparison of the HOG characteristics of the targeted image and a template image, selecting a plurality of position regions on the targeted image that match the template image as candidate regions for precise search; 3) performing the matching in each candidate region of the targeted image and recording the matching similarities; 4) integrating the matching similarities at different positions in each candidate region on the targeted image to obtain the general similarity for the different positions of the targeted image; and 5) based on the general similarity, determining the position where the targeted image and the template image match best. According to the invention, the advantage of maximizing the precise description of the local characteristics can be realized, which solves the defect of the sensitivity to spatial position deviation. The algorithm speed can completely meet the real-time requirement.

The invention relates to a diamond abrasive wire cutting fluid for a semiconductor precision sheet. The raw materials of the diamond abrasive wire cutting fluid consist of the following compositions in parts by mass: 30-80 parts of polyalcohol, 0.01-0.5 parts of hydrogen inhibitor, 0.01-0.5 parts of acid, 0.1-1.0 part of surfactant, 1.0-10.0 parts of dispersing agent, 0.01-0.5 parts of preservative and 10-35 parts of deionized water, wherein the polyalcohol is mixture of propylene glycol and polyethylene glycol with ratio being 1 to (1:2) and the molecular weight of the polyethylene glycol is between 100 and 600. The diamond abrasive wire cutting fluid for the semiconductor precision sheet has the characteristics that the hydrogen is effectively inhibited from being generated, the lubricating effect is remarkable, the cleaning is easy to conduct, the cost is low and the performance is stable.

The invention provides a hydraulically-powered rotary digging device for a small-type tree mover capable of protecting roots and conserving soil. The device comprises a down tree digging member and an upper spiral arm rotary conveying member which is fixedly connected with the down tree digging member; the down tree digging member comprises a deep digging arm; a moving arm, a down deep digging arm and a deep digging shovel which are symmetrically arranged at left side and right side of the deep digging arm; the moving arm is slidingly clamped in a transverse slideway of the deep digging arm; a mounting seat is connected to the middle part of the deep digging arm; a hydraulic clamping cylinder is connected between the moving arm and the mounting seat; the moving arm is connected with a holding hoop sleeve through a hydraulic holding cylinder; the down deep digging arm is mounted at an end part of the moving arm; the down deep digging arm is provided with a dovetail slideway in longitudinal direction; the deep digging shovel is inwardly and obliquely downwards installed on a spacing slide block; the deep digging shovel is slidingly matched with the dovetail slideway through the spacing slide block whose upper part is fixedly connected to the deep digging shovel, and the deep digging shovel is controlled to lift up and down by a deep digging hydraulic cylinder which is mounted on the deep digging arm. The device of the invention has simple structure and is efficient and reliable to operate; automatic control is convenient to realize; root protection and soil conservation are fulfilled and survival rate of trees is increased.

The invention discloses a photosensor testing sorting machine which comprises a main tower rotating disc system, a feeding screening module and a feeding transfer device. The main tower rotating discsystem performs systematic control over module devices, a loading disc containing a device is placed on a product launching loading platform of the feeding screening module, a vision CCD device of thefeeding screening module recognizes the device, a device taking and placing suction nozzle selects a product of a correct directional surface from the loading disc, and the product is transferred toa device positioning reverse mold of the feeding transfer device; the feeding transfer device transfers the product to the portion under the working position of a vacuum suction nozzle of the main tower rotating disc system; the existing production mode that workers perform manual testing under the special environment and workers perform appearance inspection under a microscope is changed into themode that machine equipment intelligently and automatically selects a qualified product, and unqualified products are classified concentratedly; in this way, the production efficiency is high, the error rate is low, the mode can be popularized to mass production, the labor cost is greatly reduced, and the working efficiency is improved.

The invention relates to a steering gear, in particular to an underwater electric steering engine and a rudder angle detection method. The underwater electric steering engine comprises an output shaft, an engine base, a worm wheel, a worm, a power system and a steering engine controller. The power system drives the output shaft to rotate through transmission of the worm and the worm wheel. The output shaft extends out of the end, provided with a shaft end cap, of the engine base, and the output shaft is provided with a limiting swing piece at the end. A swing groove is formed in the shaft end cap. The limiting swing piece swings in the swing groove. The steering engine controller is connected with a motor in the power system. An incremental encoder is arranged on the motor. The limiting swing piece and the steering engine controller are used for determining the rudder angle zero point position. The incremental encoder is used for detecting angle change values of a motor output shaft so as to determine the absolute position of the current rudder angle. The power system is arranged in a shell. The shell communicates with the engine base, and the interior of the shell is an oil-filled sealed space. An oil pipe is connected with the shell. The underwater electric steering engine is compact in overall structure and capable of meeting operation demands of full-ocean-depth low-speed large-torque and large-moment output.

The invention discloses a bogie traction device and an application thereof. A traction device is mounted on a bogie and comprises a central pin, a central pin seat, a central pin sleeve seat and a first and second traction pull rod assembly. The upper end of the central pin is pressed in a mounting hole of the central pin seat through interference fit; the upper part of the central pin seat is connected with a vehicle body; and the central pin sleeve seat is arranged at the lower end of the central pin in a sleeving manner. One end of the first and second traction pull rod assembly is connected to the side part of the central pin sleeve seat; and the other end of the first and second traction pull rod assembly is connected to a cross beam of a bogie framework. The central pin sleeve seat is connected with the bogie framework through the first and second traction pull rod assembly; and the first and second traction pull rod assembly is used for stably transmitting a traction force and abraking force. According to the bogie traction device, technical problems that an existing bogie traction device cannot adapt to an electric transmission subway track engineering vehicle use environment, the structure of the existing bogie traction device is complicated, and the existing bogie traction device cannot satisfy requirements of vehicle speed and minimum curve radius can be solved.

The invention provides a self-lubricating modular metal roller electric locomotive pantograph head with a damping structure. Pure carbon sliding plates are arranged on the two upper end surfaces of aU-shaped insulating base, and more than one group of metal rollers are arranged on the horizontal bottom plate of the base; the setting mode of each group of metal rollers is as follows: the lower parts of every two T-shaped insulating supports extend into grooves of a horizontal bottom plate respectively, and are arranged on fixing bolts which are screwed into the outer side of the horizontal bottom plate through holes in the horizontal bottom plate, spring damping mechanisms are symmetrically arranged on the left side and the right side of each insulating support, and the two metal rollers are arranged between the two supports through fixing shafts; and the structure of the metal rollers are is characterized in that the metal cylinders sleeve the metal shafts through insulating bearings,annular current-receiving electric brushes are fixed on the metal shafts, and the outer surfaces of the annular current-receiving electric brushes are in contact with the inner walls of the metal rollers. The self-lubricating modular metal roller electric locomotive pantograph head has the self-lubricating effect, is in flexible contact with an arch net and forms rolling friction fit, and has thecharacteristics of being capable of adapting to requirements of traction power of a train, being longer in service life and the like.

The present invention discloses a turret mounting machine, which comprises a rack electronic control module. The top of the rack electronic control module is provided with a carrier pallet basket lifting device. One side of the carrier pallet basket lifting device is provided with a carrier pallet grasping and conveying device. One side of the carrier pallet grasping and conveying device is provided with a carrier pallet automatic transmission device. The carrier pallet automatic transmission device is connected with a sorting XYtheta compensation system and one side of a sorting XYtheta videosystem is provided with a turret high-speed pick-and-place system. One side of the turret high-speed pick-and-place system is provided with a wafer XYtheta compensation system; the top of the wafer XYtheta compensation system is provided with a wafer CCD video system; the wafer XYtheta compensation system is provided with a XY self-correcting thimble system; one side of the XY self-correcting thimble system is provided with a wafer grasping and conveying device; and one side of the wafer grasping and conveying device is provided with a wafer basket lifting device. The invention solves the problems that a traditional mounting machine adopts a structure of single swing arm and single suction nozzle, the operation accuracy and production speed can not be improved, and the high-speed high-precision surface mounted product manufacturing requirements can not be satisfied.

The invention relates to a motion control device based on a versa module Euro-card (VME) bus, in particular to a multi-axis motion control device based on the VME bus, which solves the problem that a speed cannot meet multi-axis control because most of conventional VME interface chips are early products. The multi-axis motion control device comprises a VME interface module, a field programmable gate array (FPGA) module, optical fibres, a memory module, an optical fibre interface module, a digital signal processor (DSP) module, a clock module, a motor driving unit and the VME bus, wherein a data exchange end of the VME interface module is communicated with the VME bus; a fourth data exchange end of the FPGA module is communicated with the data exchange end of the optical fibre interface module; a control output end of the DSP module is connected to a control input end of the FPGA module; another output end of the clock module is connected to a clock input end of the optical fibre interface module; and another data exchange end of the optical fibre interface module is communicated with the data exchange end of the motor driving unit through the optical fibres for realizing multi-axis motion control.

The invention provides a method for measuring the water content of a dried object, a vacuum drying device and a control method of the vacuum drying device. The method for measuring the water content of the dried object is used for calculating the water content of the dried object in a drying container in the vacuum drying process. The method calculates the water evaporation amount of the dried object at the drying temperature according to the system parameter values of the drying container in the closed state and calculates the current water content of the dried object according to the water evaporation amount. The method for measuring the water content of the dried object is simple, convenient to use and easy to achieve, efficient in the measuring process, and wide in measuring range and reliable in measuring result. The invention further provides the vacuum drying device and the control method of the vacuum drying device. The vacuum drying device controls the drying process by conducting real-time measurement on the water content of the dried object, the control method can meet the requirements for rapidness and continuity, manual intervention is not required, and the preset target water content of the dried object can be accurately and rapidly achieved.

This invention provides an industrial image collection system based on a USB 3.0 interface, and an image collection processing method of the industrial image collection system. The system comprises a Camera link interface, an image collection processing module, a storage module and the USB 3.0 interface. The image collection processing module includes a pixel synthesis module, an image pre-treatment module, a data buffer module, an image post-treatment module and a USB 3.0 bus control module which are sequentially connected, and also includes a command analysis module connecting with the USB 3.0 bus control module. The system provided by the invention is realized based on the USB 3.0 interface, fully supports 8 bit, 10 bit, 12 bit, 14 bit, 16 bit, and RGB 24 bit image collection in the Camera Link Base mode, and has the advantages of high transmission speed, good portability and high compatibility with the PC. The cost of a USB 3.0 collection device is lower as compared with image collection devices of other interfaces, so that the system shows an advantageous cost performance.

The present disclosure relates to a computer-implemented method, apparatus, and medium for generating anatomical tags for a physiological tree structure. The method may include the steps of receivinga 3D model of the physiological tree structure and a 3D skeleton line, where the 3D model is reconstructed based on medical image data of the physiological tree structure acquired by an imaging device; selecting at least one level from the selectable levels of pools for extracting the geometric features; extracting geometric features by a processor from the 3D model of the physiological tree structure along the 3D skeletal line at a selected at least one selectable level; generating anatomical tags for the physiological tree structure by the processor using a trained learning network based onthe extracted geometric features. The method and the device can quickly, accurately and automatically generate the anatomical label for the physiological tree structure, so that the robustness and theaccuracy of automatic labeling are improved.

The invention discloses a visual inspection system for automatically detecting white glass surface defects. The visual inspection system comprises four sub-devices, namely a light source device, a micro-vision device, a precision transmission device and a control upper computer, wherein the light source device at least comprises a light source; the micro-vision system at least comprises a camera and a lens; the precision transmission device at least comprises a carrier roller transfer structure and a motor driving structure; the visual inspection system is characterized in that the camera is connected with the lens from top to bottom; the camera and the lens are positioned at the vertical upper part of the light source; a light source box is arranged outside the light source; a light source gap is formed in the box body for allowing the camera to acquire an image of a white glass sheet passing through the lower side of the light source box body; the carrier roller transfer structure is assembled below the light source box and is used for transferring the white glass sheet; and when the white glass sheet is transferred to a position aligned with the light source gap through the carrier roller, the image acquisition is started, the images are acquired line by line by the camera while passing through the lower side of the light source gap from one side of the white glass sheet, and acquisition of all the images is completed after the whole white glass sheet passes through the gap.

The invention discloses a device and a method for modulating the frequency of a generator set of the device. According to the device, an isolation cascaded transformer and a cascaded convertor are additionally arranged between a machine end of a generator and a low-voltage side of a boosting transformer of a grid connection point, a shunt-wound convertor is additionally arranged on a low-voltage side of the machine end of the generator or the low-voltage side of the boosting transformer of the grid connection point, the cascaded convertor and the shunt-wound convertor are connected together through a public bus, and the cascaded convertor is used for dynamically regulating a cascading compensation output voltage according to the real-time response of technical requirements on the frequencymodulation of the generator set so as to realize the active power regulation of the frequency modulation requirements; and the shunt-wound convertor is used for stabilizing a direct current bus voltage and timely responding to reactive power control requirements of a system. The device has the advantages that various problems during the frequency modulation of the generator set at present can besolved, the comprehensive response speed is high, the modulation precision is high, the device has good coordination control capability with an existing automatic generation control AGC system, the equipment maintenance amount is reduced, the service life of a machine set is prolonged, and the device has very good economic benefits.

The invention discloses a centroid radial variable three-drive spherical robot with double control modes, which comprises a spherical shell, a drive motor, a heavy pendulum and a heavy pendulum lifting system. The spherical shell is connected with an X-axis motor rotor; an X-axis motor, a Y-axis motor and a Z-axis motor are respectively arranged on the outer surfaces of each shaft frame; the heavypendulum lifting system consists of a linear module, a gear system, a lifting motor and an auxiliary battery system. According to the invention, the radial change of the centroid of the spherical robot can be achieved through the movement of the heavy pendulum in the heavy pendulum lifting system, so that the spherical robot has double control modes, namely, a counterweight driving control mode and an inverted pendulum driving control mode, the conversion of the two control modes can be achieved, the micro adjustment of the running speed and attitude of the spherical robot under the conditionof constant moment output can be achieved, and the requirements of high response speed and accurate control of the spherical robot under multiple current application occasions can be met.

The invention discloses a high-speed rail scene perception method based on deep learning and structure information, and the method comprises the following steps: 1, obtaining track images, dividing the track images into a training set and a test set, and carrying out the marking of the images in the training set, so as to form a data set; 2, constructing an SSD network model, and constructing a loss function; 3, performing iterative training on the network obtained in the step 2 by adopting the data set formed in the step 1 to obtain a training model; 4, inputting a video needing to be detected and perceived into the training model obtained in the step 3 by frames, extracting features to obtain positions and category information of the fasteners and the shoulders, and distinguishing the turnout from the common rail according to the positions and the category information of the fasteners and the shoulders; 5,clustering position information of the positioning results in the step 4, and completing perception of the steel rail and the sleeper; rail parts in a turnout area can be detected and semantically segmented, the detection precision is high, and the detection speed is high.

The invention discloses a data processing method and device and a readable storage medium. The data processing method comprises the following steps: receiving input data; processing the data via at least one sub-network model of the neural network model, wherein the neural network model comprises a plurality of basic units and a plurality of sub-network models, each sub-network model comprises atleast part of the basic units in the plurality of basic units, and at least two sub-network models in the plurality of sub-network models share one or more basic units in the plurality of basic units.According to the embodiment of the invention, a plurality of sub-network model structures capable of sharing parameters are designed in a neural network; therefore, a plurality of different sub-network models can be trained at the same time in one training process of the neural network, the precision and speed requirements of different data processing devices can be met, the training and testingprocesses in the actual development process are greatly simplified, and computing resources are saved.

The invention belongs to a valve, in particular to a flow separation, pressure adjustment and speed adjustment reversing integrated valve. The integrated valve comprises a valve body, an oil inlet andoverflow valve arranged on the valve body, and a pilot pressure adjusting, throttling switching and speed adjusting unit; the valve body is provided with an oil return port, a throttling oil outlet and an oil outlet; an overflow back pressure cavity, an oil outlet cavity, an oil inlet cavity, a throttling oil outlet cavity and a liquid control cavity, axially penetrating through a main hole, arearranged in the valve body at intervals; the throttling oil outlet cavity communicates with the throttling oil outlet; the oil outlet cavity communicates with the oil outlet; the oil outlet cavity communicates with the liquid control cavity by a liquid control hole way; an overflow main valve sleeve is inserted in the main hole to form dynamic seal fit, the outer end thereof is assembled with an outer end stop port of the main hole, and the inner end thereof is provided with a throttling port; and in a non-working state, the overflow main valve sleeve separates the oil inlet cavity from the oil outlet cavity. The integrated valve effectively solves the technical difficulties of high energy consumption, high working medium temperature rise and the like in the prior art, and has the advantages of capability of respectively driving multiple execution elements with different working pressures and flows, lower grade requirement on system modules, capability of realizing speed adjustment andthe like.

An energy storage transmission mechanism comprises a transmission shaft (1) and a driving shaft (2). The mechanism is characterized in that the transmission shaft (1) is provided with a slide hole (101); a pair locking bolt (3) is installed in the slide hole (101) and can slide; the upper end surface of the transmission shaft (1) is provided with a track slope groove (102); the inner end surface of the driving shaft (2) is provided with a releasing convex platform (201) corresponding to the track slope groove (102); the upper end surface of the transmission shaft (1) is provided with a lockingconvex platform (103); a positioning shaft (202) which is stretched out of the driving shaft (2) is arranged in the positioning hole (104) of the transmission shaft (1); one end of an energy storagetension spring group (4) is installed on the pair locking bolt (3) and the other end is installed on a driving finger (204) stretched out of the driving shaft (2); and during the rotation process of the driving shaft (2), the driving finger (204) stretches the energy storage tension spring group (4) so that energy storage is performed. In the invention, the structure is simple, reliability is high, through a switch mechanism, the effective power of energy storage and transmission is increased, a mechanism load is reduced, and the motion reliability and the mechanical life of the mechanism areincreased and prolonged.

The invention discloses a sterile tissue and a production process thereof, and belongs to the technical field of tissue production. The tissue is prepared from, by weight, 20-60% of bleached sulfate softwood pulp, 30-70% of CPMP and 0-10% of broken paper pulp. According to the method, by adopting an appropriate principle and ratio, wet strength agents with low organic chlorine, biodegradable non-toxic fungicides and FDA-authenticated coatings, adopting forming equipment with a low vertical-horizontal tension ratio, a drying and sterilization process at the temperature higher than 40 DEG C andsafe non-toxic chemicals, and combining appropriate pressing printing processes, the produced tissue has the advantages of being low in quantification, low in vertical-horizontal tension ratio, sterile, environmentally friendly and high in water absorption performance.

The invention discloses a security clothing detection method and system based on improved YOLO V5, and belongs to the field of target detection. The method comprises the steps that a safety clothing wearing state training set is adopted to train and improve YOLO V5, a training sample comprises a worker picture frame, a label is a safety clothing wearing state, and a trained detection model is obtained; and each frame of the industrial monitoring video is input into the trained detection model to obtain a safety suit detection result. According to the method, different neural network structures are used for replacing a Backbone module of an original YOLO V5 algorithm, the OfficientNet is used as the Backbone, the width and depth of the network structures and the resolution of the input image are uniformly scaled through the expansion coefficient of the composite model, and the effect superior to that of manual parameter adjustment of the YOLO V5 is obtained. ResNet50 is adopted as a Backbone, due to the fact that a residual block is added, feature information extracted by a network is completely reserved to a next layer, and gradient dispersion between network layers is effectively eliminated in the forward propagation process. ShuffleNet or MobileNet is used as a Backbone, so that the complexity of a network structure and the size of a model are reduced, and a lightweight model is obtained.

The invention relates to a dental 3D printing wax material based on MJP (multi-jet printing) technology. The dental 3D printing wax material is prepared from the following raw materials in parts by mass: 20-50 parts of microcrystalline wax, 10-30 parts of montan wax, 10-30 parts of vegetable wax, 5-15 parts of Fischer-Tropsch wax and 5-20 parts of a toughening agent. The dental 3D printing wax material based on the MJP technology has the characteristic of balanced rigidity and toughness, high precision, moderate kinematic viscosity and good film forming performance; plugging, limpness and ashresidues in lost wax casting cannot occur when the dental 3D printing wax material is applied to the MJP technology, the requirements of high printing speed and high precision of the MJP technology are met, and lost wax performance in casting is good. Besides, the dental 3D printing wax material based on the MJP technology can meet the requirement of 3D printing dentistry for high precision.

The invention discloses a control system and a control method for the pattern precognition of weft accumulators. The control system comprises a color selection control unit and a plurality of weft accumulator singlechips, wherein the weft accumulator singlechips are connected with the color selection control unit so as to maintain data communication. The control method comprises the following steps that: pattern data obtained by encoding flower forms are stored in the color selection control unit, the color selection control unit sends a pattern data fragment with certain digits to each weft accumulator singlechip at regular intervals, the singlechip on each weft accumulator reads pattern data, performs encoding analysis on the pattern data, and acquires a flower form code which is the same as a code of the weft accumulator, and the weft accumulator actively performs weft accumulation according to the quantity and time that the flower form code appears. By the control system and the control method, the passive weft accumulation of the weft accumulators can be converted into the active weft accumulation, so that the weft insertion rate of the weft accumulators is improved, the overhigh fluctuation of the speed of weft accumulation motors is furthest reduced in the weaving of complicated patterns, the stability of the weft accumulation capacity and the output tension is maintained, and the powerful guarantee is provided for the high-speed and high-efficiency development trend of modern looms.

The invention discloses a water suction pump driven by an excavator and used in an emergency. According to the water suction pump driven by the excavator and used in the emergency, a main cavity (1-1) is arranged in a pump body (1), a water outlet (1-2) communicated with the main cavity (1-1) is arranged in the pump body (1), a water suction cavity (1-3) is arranged in the lower potion of the pump body (1), water inlets are formed in the bottom wall and circumferential walls of the water suction cavity (1-3), the upper end of the pump body (1) and a connection seat (3) are fixed through a support seat (2), a hydraulic motor (4) is arranged on the top portion of the connection seat (3), the output end of the hydraulic motor (4) stretches downwards into the connection seat (3) and is connected with the upper end of a pump main shaft (5), the lower end of the pump main shaft (5) penetrates through the connection seat (2) and stretches into the main cavity (1-1) of the pump body (1), and a screw blade (6) is arranged on the end portion of the lower end of the pump main shaft (5). The water suction pump driven by the excavator and used in the emergency can be used for water suction work in the emergency due to the fact that the water suction pump used in the emergency is driven by the excavator and requirements for rapidness and large water suction quantity in the emergency are met.

The invention discloses a single motor coupler only for an electric vehicle. The single motor coupler is composed of a motor, a sun wheel, a ring gear, two planet gears, a planet carrier, a hollow gear shaft, two constant meshing gears, and a gear shifting mechanism, and a differential mechanism. The single motor coupler includes two drive gear positions including a drive gear position A and a drive gear position B; and the drive gear position A is a low gear to achieve a larger transmission ratio, and the drive gear position B is a high gear. The single motor coupler effectively shortens gear-shifting interval; the power layout of a traditional automobile is changed, the transmission system is simplified, and the transmission efficiency is improved; the structure is simple, the weight ofa vehicle body is reduced, and meanwhile, the remaining space of a chassis is increased; the two drive gear positions are realized, and the speed and power demands under different road conditions aresatisfied, so that the motor runs in a high efficiency range and the efficiency of the motor is improved; and the gear-shifting interval is short, energy loss is reduced, the energy utilization is improved, and the adverse effect of power interruption on driving is reduced.

The invention provides a sputtering apparatus with a close packing tip anode. The sputtering apparatus is provided with a vacuum pipeline and an air feeding pipeline on a sputtering cavity body, and the sputtering cavity body is provided with a sputtering target and a heating body inside, wherein the close packing tip anode is arranged between the sputtering target and a sample and takes metal as a basal body, the middle part of the close packing tip anode is hollow, the edge at the inner side of the hollowed-out part is formed by arranging and connecting a plurality of tip bodies continuously, and the tip of each tip body faces the middle part of the hollowed-out part which is opposite to the sputtering target. The sputtering apparatus with the close packing tip anode can be applied to plane target sputtering to prepare an YBCO film material in batch production, greatly removes the influence of the negative oxygen ion bombardment, and meets the requirements on the speed of batch preparation and a process window.

This invention discloses an accumulation device including an increment multiple unit, which receives incremental data input from outside to generate the multiple incremental values of K of 1-K times increments, an accumulator receiving k-times of incremental values output by the increment multiple unit to generate an accumulated value to be output to an addition unit and taken as one circuit of phase data to be output, an addition unit receiving the accumulated value output by the accumulator and 1-k-1 times of increment value output by the increment multiple unit to add the accumulated result and the 1-k-1 times of value to generate the sum of k-1 to be taken as the k-1 phase data to be output, in which, k is a natural number greater than 1. This invention also discloses a digital circuit unit for a direct digital frequency composition device utilizing said accumulating device for phase accumulation.