78results about How to "Improve switching efficiency" patented technology

The invention relates to the technical field of semiconductor devices, and discloses a wide bandgap power semiconductor device and a preparation method thereof. The method comprises: providing a substrate layer of a first conductivity type; forming a first doped region which is deep into the substrate layer and comprises a plurality of doped layers which are sequentially nested from outside to inside, wherein the doping concentrations of the plurality of doped layers are sequentially increased from outside to inside; forming a second doped region in the doped layer on the innermost side of the first doped region; forming an isolation layer on the first surface; forming a control electrode on the isolation layer; forming a first electrode on the first surface; a second electrode is formed on the second surface of the substrate layer. According to the invention, the first doped region which is located between the substrate layer and the second doped region and has the doping concentration gradually increased from outside to inside is formed through a mode of multiple times of ion implantation, so that transverse electric field constraint is constructed, transverse depletion of a channel region and a short channel effect under the condition of large voltage are inhibited, the channel width is reduced, and the performance of the device is improved. And the device performance and reliability are improved.

The invention relates to the technical field of automobile body-in-white welding and manufacturing, and discloses a flexible positioning method of a middle and rear floor clamp and a hardware system thereof, and the hardware system comprises a clamp base, a flexible positioning mechanism switched through an electric cylinder and a flexible positioning mechanism switched through a gun changing disc. The flexible positioning method comprises the steps that firstly, the master control PLC unit analyzes a vehicle type code instruction, and the number of the target separable module, the left side target position and the right side target position are determined; the first servo electric cylinder and the second servo electric cylinder drive the movable positioning module to move independently. The carrying robot assembles the separable module on the clamp base, and the base butt joint structure achieves positioning through cooperation of a first base side positioning pin and a first module side positioning bush. The locking and maintaining system utilizes a pneumatic clamping unit to lock the separable module, and the robot side main disc and the tool side gun changing disc achieve automatic energy butt joint. According to the invention, the problems of low positioning switching efficiency and poor precision in multi-vehicle mixed-line production are solved.

This application provides a converter circuit and a control method for the converter circuit. The converter circuit provided in this application includes a converter module and a control module. The control module is used to detect the voltage parameters of the converter module and determine the voltage deviation based on the voltage parameters; determine the current zero-sequence component coefficient based on the voltage deviation; and determine the modulation waveform based on the current zero-sequence component coefficient, so as to drive the converter module using the modulation waveform. The converter circuit of this application associates the current zero-sequence component coefficient with the voltage parameters. When voltage changes are caused by system startup, shutdown, load abrupt changes, etc., only the current zero-sequence component coefficient is adjusted to quickly and smoothly switch between SVPWM and DPWM under these conditions, improving system switching efficiency and dynamic response capability.

The utility model relates to a wavelength switching output device for a laser. The wavelength switching output device comprises a mounting seat, a driving part, a first transmission part, a second transmission part, a first nonlinear crystal assembly and a second nonlinear crystal assembly, the first nonlinear crystal assembly and the second nonlinear crystal assembly are movably mounted on the mounting seat respectively, and the first nonlinear crystal assembly and the second nonlinear crystal assembly coincide or do not coincide in the light propagation direction in the moving process; the first nonlinear crystal component and / or the second nonlinear crystal component can pass through the first nonlinear crystal component and / or the second nonlinear crystal component; and the driving piece is used for driving the first nonlinear crystal assembly to move through the first transmission piece, and is used for driving the second nonlinear crystal assembly to move through the second transmission piece. According to the utility model, lasers with different wavelengths can be output; and in addition, the switching convenience and accuracy are improved and the switching efficiency is improved in a mode that the driving part is used for driving switching.

The application relates to the computer technical field and discloses a management permission switching method and device, electronic equipment and a storage medium, the method is: in response to a permission switching request triggered by an authorized object based on a first sub-application in an interactive application, obtaining identity authentication information of the authorized object and identification information of an information collection device, then sending permission switching prompt information to a target object selected by the authorized object, and after obtaining confirmation information of the target object, realizing switching of management permission of the information collection device from the authorized object to the target object. In this way, the permission switching server completes switching of the management permission of the offline payment device by means of the sub-application running in the interactive application, and by means of the identity authentication information used by the object in the interactive application, the object participating in the interaction does not need to be authenticated in the permission switching process, the information processing time is greatly saved, and the permission switching process is simplified.

The utility model relates to the field of injection molding machine discloses a kind of double-injection structure of automatic translation switching, including fixed mould plate and bearing platform, two injection platforms are arranged in parallel on bearing platform, and two injection platforms are each guided and slippage on bearing platform along injection direction, bearing platform is guided and slippage on body along perpendicular to injection platform injection direction, the movement of injection platform is controlled to whole shift oil cylinder, the movement of bearing platform is controlled to translation oil cylinder, positioning module for realizing accurate positioning when injection platform switching is arranged between body, bearing platform, fixed mould plate and injection platform, positioning module includes translation limiting block being arranged on the both sides of bearing platform on body, on-off structure being connectable or disconnectable between the piston rod end of whole shift oil cylinder and fixed mould plate and whole shift limiting block being arranged on bearing platform and limiting the maximum stroke of injection platform retreat, the double-injection structure can be automatically and accurately switched in subsequent after completing initial debugging, time-saving and labor-saving.

The invention discloses an all-optomagnetic turnover magnetic film as well as a preparation method and application thereof. The all-optical magnetic turnover magnetic film comprises a Ta layer, a first Pt layer, a Co layer, a Ru layer, a Gd layer and a second Pt layer which are sequentially stacked on the surface of a substrate, wherein the thickness of the Ru layer is 0.8 nm, 1.3 nm or 1.5 nm. The preparation method of the all-optical magnetic flipping magnetic film comprises the following steps: sequentially depositing a Ta layer, a first Pt layer, a Co layer, a Ru layer, a Gd layer and a second Pt layer on the surface of a substrate by adopting ultrahigh vacuum direct current magnetron sputtering to obtain the all-optical magnetic flipping magnetic film. The all-optical magnetic flipping magnetic film has the advantages of high switching efficiency, low switching energy, wide energy window, easiness in regulation and control, stability in repeated writing and the like, can be applied to the fields of high-density ultrafast magnetic storage, information processing and the like, and is suitable for large-scale application.

The invention discloses a modular core box device for a brake disc sand core. The modular core box device comprises a bottom frame assembly; the lower core box bottom plate assembly is arranged above the bottom frame assembly; the lower ejector rod mother plate assembly is arranged at the lower end of the lower core box bottom plate assembly and located in the bottom frame assembly; the at least one lower core box is detachably arranged on the lower core box bottom plate assembly; the lower ejector rod daughter board assembly is arranged at the bottom of the lower core box; the upper core box bottom plate assembly is detachably arranged above the lower core box bottom plate assembly; the at least one upper core box is detachably arranged on the upper core box bottom plate assembly and corresponds to the lower core box; the sand shooting assembly is detachably arranged above the upper core box bottom plate assembly; and the air blowing assembly is detachably arranged above the upper core box bottom plate assembly. According to the modular core box device for the brake disc sand core, modular arrangement is achieved, mounting and dismounting are convenient, and the universality of equipment is improved.

This invention provides an automatic target switching device, comprising: a housing assembly, a target wheel assembly for switching targets, a servo motor assembly for controlling the rotation of the target wheel assembly, a transmission assembly for supporting the target wheel assembly, and a control assembly. This invention uses multiple target wheel units installed side-by-side, reducing the size of the switching device, and the number of target wheels can be selected according to actual needs. The selection of the target wheel and the precise switching and adjustment of the target can be achieved by driving two servo motors to rotate through the control unit, eliminating the need for manual replacement or adjustment and reducing the introduction of subjective errors. This invention has a simple structure and provides connection interfaces for use with different collimators or light sources, offering strong expandability. This invention has high overall switching efficiency, a high degree of automation, and strong applicability, meeting the needs of optical parameter detection in telescope systems and performance testing of various other optoelectronic devices.

The application provides a route switching method, a node, a routing device and a storage medium. The route switching method comprises the following steps: when it is determined that the running state of a main route changes to a fault state, a dispersion search range is sent to a receiving end, so that the receiving end and the sending end perform communication of service data through a backup route, wherein a dispersion compensation parameter applied by the receiving end is obtained by the receiving end performing dispersion search on the backup route in the dispersion search range. According to the scheme provided in the embodiment of the application, the dispersion search range can be configured for the receiving end, in-band traversal is not needed, the time consumed by dispersion search is effectively reduced, the switching efficiency of the backup route is improved, the timeout risk of protection switching is reduced, and the service is ensured to be quickly recovered.

The utility model discloses a kind of sintering furnace atmosphere environment adjusting device, it is related to sintering furnace technical field, the atmosphere environment adjusting device is installed in furnace body, including partition, adjusting assembly, placing structure, air inlet component and air outlet component, partition is horizontally installed in furnace body inside, adjusting assembly is fixedly installed on furnace body, placing structure is located furnace body inside and is installed in adjusting assembly top, two sets of air inlet component and two sets of air outlet component are all installed on furnace body.The sintering furnace atmosphere environment adjusting device is provided with upper inner cavity and lower inner cavity, upper inner cavity and lower inner cavity are filled with different atmosphere, the position of placing structure can be adjusted in the case where the gas exchange of upper inner cavity and lower inner cavity is hindered by adjusting assembly to the lifting and rotation adjustment of placing structure, realize the switching of the atmosphere environment where sintering piece is located, to avoid sintering sample simultaneously contact two or more than two atmosphere, effectively improve sintering atmosphere switching efficiency and switching quality, enhance the practicability of device.

The scheme relates to a handover method, system and electronic equipment of a base station cell, comprising: a base station detecting communication state information of a terminal device and a first cell in the base station, and acquiring communication service information of all relay transition ends; if the communication state information is communication interruption, determining a target relay transition end according to the communication service information of all relay transition ends; sending a communication reestablishment instruction to the target relay transition end, and the target relay transition end receiving and analyzing the communication reestablishment instruction, so that the target relay transition end establishes a communication connection with the terminal device, and the target relay transition end establishes a communication connection with a second cell and / or a third cell in the base station. The embodiment of the application can improve the utilization rate of network resources and the efficiency of cell handover, and can be widely applied in the field of communication technology.

The present disclosure relates to a battery system, a control method, a controller, a vehicle, a medium and a program product, the battery system comprising a battery management module and a plurality of battery cell management modules, the battery management module and each battery cell management module communicating through any one of a wireless communication link and a wired communication link, and the plurality of battery cell management modules sharing the wired communication link, the control method comprising: determining a communication state indicating whether the wired communication link is faulty when the battery management module communicates with each battery cell management module through the wired communication link; determining a fault position of the wired communication link when the communication state indicates that the wired communication link is faulty; and controlling the wired communication link and the wireless communication link to switch according to the fault position. Thus, automatic switching of the wired communication link and the wireless communication link can be achieved, thereby improving the reliability and dynamic adaptability of the battery system.

The invention relates to the technical field of intelligent production lines, and discloses a multi-product adaptive automobile air conditioner flexible production line intelligent production system which comprises a physical perception and execution layer, a digital twinning and simulation verification layer and a cloud intelligent decision and scheduling layer. Wherein the physical perception and execution layer comprises a multi-product adaptation execution unit used for adapting to different types of automobile air conditioners on a single production line; the digital twinning and simulation verification layer is used for performing simulation verification and feasibility rehearsal on the production plan and the scheduling instruction; and the cloud intelligent decision-making and scheduling layer comprises a hybrid intelligent scheduling engine and a self-adaptive process knowledge base. According to the invention, through linkage of three-dimensional visual real-time identification and the adaptive process knowledge base, perception and adaptation are realized; and when the new-type product is on line, the whole set of digital process parameters are automatically identified and called to drive the production line to adjust, so that the whole-flow process switching time is greatly shortened, and the switching efficiency is improved.

The application discloses a cold strip coiler drum dismounting device and belongs to the technical field of steel smelting devices, characterized in that: a first lifting device is installed in a vehicle body, a supporting plate is inserted into the cavity of a supporting pipe and connected through a second lifting device; a plurality of parallel sliding grooves are arranged on a lifting plate, a second lead screw is installed in the middle sliding groove, third guide rods are arranged in the remaining sliding grooves, one end of the second lead screw is rotationally connected with the end wall of the middle sliding groove, the other end of the second lead screw passes through the through hole in the other end wall and is connected with a third rocker, the two ends of the third guide rod are fixedly connected with the walls at the two ends of the sliding groove, the lower end of a first push plate is provided with a second lead screw nut and a guide block with a guide through hole, the second lead screw is threadedly connected with the second lead screw nut, and the third guide rod passes through the guide through hole of the guide block. Compared with the prior art, the application has the characteristics of short sleeve replacement time, safety and quickness.

The invention discloses a silicon carbide diode structure, a chip structure and a preparation method thereof. Each of the diode structure and the chip structure comprises a cathode metal and an N + type silicon carbide substrate above the cathode metal, and a first N-type silicon carbide epitaxial layer, a second N-type silicon carbide epitaxial layer and a P + type shielding region are sequentially arranged above the N + type silicon carbide substrate; one end, far away from the N + type silicon carbide substrate, of the second N-type silicon carbide epitaxial layer is provided with a longitudinal step groove, the longitudinal step groove penetrates through the second N-type silicon carbide epitaxial layer and a part of the first N-type silicon carbide epitaxial layer, and the side wall and the bottom of the step groove are coated by anode metal. The chip structure further comprises a plurality of cellular structures which are provided with the layers and are different in structure. According to the invention, under the condition of not increasing the area of an active region chip, the Schottky contact area can be obviously increased, the conduction loss of the device is reduced, and the anti-surge capability of the device is improved.

The application discloses a whole vehicle power mode automatic switching method and an automobile. The method comprises the following steps: acquiring a current whole vehicle power mode of the automobile and receiving area equipment signals sent by area controllers in real time; acquiring an associated power mode corresponding to the whole vehicle power mode; determining a target power mode of the automobile from the associated power mode according to the area equipment signals; and controlling the area controllers to switch the automobile to the target power mode. The application improves the efficiency of whole vehicle power mode switching and improves the user's driving experience.

This invention discloses a rectangular cross-section cast iron continuous casting crystallizer, comprising a crystallizer graphite sleeve, a crystallizer water-cooling sleeve, a small transition plate, and a large transition plate sequentially fitted onto the outer wall of the crystallizer graphite sleeve, which are connected in sequence. A crystallizer end pressure plate is also provided at one end of the crystallizer graphite sleeve, connected to one end of the crystallizer water-cooling sleeve. Through holes with the same cross-sectional dimensions as the outer perimeter of the crystallizer graphite sleeve are opened at the center of the small transition plate, the large transition plate, and the end pressure plate. The water-cooling plate in this crystallizer, through optimized flow channel layout, solves the problems of uneven cooling at the corners of rectangular cast billets and the problems of leakage, water cross-contamination, deformation, scaling, and insufficient heat exchange inherent in traditional water-cooling plates, achieving uniform cooling, reducing the risk of local overheating and cracking, and ultimately improving the forming quality of the cast billet. A method for manufacturing the rectangular cross-section cast iron continuous casting crystallizer water-cooling plate is also disclosed.

The utility model discloses a nuclear power station large -scale component switching device, including platform, two material racks, the both sides of platform are equipped with support frame, the top of platform is equipped with horizontal slide rail, is installed with two horizontal slide plates on horizontal slide rail, and each horizontal slide plate is driven to remove by a set of horizontal movement drive mechanism, each horizontal slide plate is installed with horizontal slide rail respectively, is installed with a plurality of longitudinal slide blocks on horizontal slide rail, and the upper end of corresponding material rack is fixedly connected with longitudinal slide block, and the lower extreme of material rack is equipped with the supporting plate, and material rack removes on horizontal slide rail by longitudinal movement drive mechanism drive. The utility model discloses a nuclear power station large -scale component switching device, and horizontal, longitudinal movement drive mechanism cooperation slide rail slider structure realizes material rack accurate positioning and nimble removal, and the component switching efficiency is improved greatly.

The utility model discloses an automatic feeding device for steel watchband processing, which comprises a fixed bottom plate, a direction adjusting seat for changing the feeding and conveying direction of a steel band workpiece is rotatably adjusted on one side of the end part of the fixed bottom plate, a butt joint direction discharging rail is arranged on the direction adjusting seat in a limiting manner, and the butt joint direction discharging rail is provided with a butt joint direction discharging guide rail. One end of the butt joint direction discharging rail is connected with a vibration feeding disc through a rubber deformation feeding rail, the vibration feeding disc adjusts the advancing direction and sequence of steel watchband parts through vibration, automatic steering is achieved through cooperation of a direction adjusting base and a servo control motor, and a flexible deformation feeding rail made of chloroprene rubber is combined. When the conveying direction is changed, the conveying angle can be adjusted in a follow-up mode, the direction limitation of a traditional fixed rail is broken through, material blocking caused by rigid connection is avoided, the device can be rapidly matched with the feeding ends of machining equipment with different layouts, and it is guaranteed that the feeding process is continuous and stable.

The invention provides a novel RC-IGBT structure with a hole circulation path and a good compromise relationship, which comprises a device main body, collector metal is arranged at the bottom of the device main body, a p + collector region, an FS layer, an n-drift region, a groove with a grid electrode at the top, an n + emitter region, a p + contact region and a p base region are sequentially arranged upwards, a second CS storage layer is arranged at the bottom, and the emitter composite structure on the two sides comprises a deep p-type region, a deeper p-type region, a hole channel and a CS storage layer. Through the above structure, the deep p-type region and the deeper p-type region optimize the electric field distribution, improve the doping concentration of the CS layer, enhance the hole accumulation effect, reduce the conduction voltage drop, accelerate the carrier export during the turn-off of a hole channel, and shorten the turn-off time, and at the same time, under the short-circuit working condition, the structures cooperatively export holes, weaken the conductivity modulation effect, improve the short-circuit endurance capability, and improve the performance of the device. And finally, good balance of voltage resistance, conduction voltage drop and switching speed is realized, and the comprehensive performance of the device is remarkably improved.

This invention provides an antenna and electronic device. The antenna includes at least two antenna groups mounted on a metal floor to jointly adjust the antenna radiation field distribution, thereby achieving beam direction switching. Therefore, this invention solves the problem in related antenna structures where it is difficult to achieve circular polarization radiation based on satellite position and switch between different beam directions, thus improving the efficiency of antenna beam direction switching.

The invention provides a dual-system fingerprint service method and device, and is applied to the technical field of fingerprint identification, the dual-system fingerprint service method is applied to a terminal device, the terminal device is provided with a first system and a second system, and the ROOT domain of the terminal device is configured with a fingerprint identification component. The fingerprint identification component is associated with a fingerprint hardware resource of the terminal equipment, and the first system and the second system share the fingerprint identification component; the method comprises the following steps: when a foreground system monitors a fingerprint operation request, the foreground system calls a fingerprint identification component to respond to the fingerprint operation request. The system stability and the system switching efficiency of the terminal equipment can be improved.

The application discloses a line control method and device, electronic equipment, storage medium and product, and relates to the technical field of channel configuration. The method comprises the following steps: in response to a test request, determining channel connection requirements and attribute information of a target switch relay instrument; determining a preset channel route associated with the target switch relay instrument according to the attribute information; wherein the channel route comprises at least one channel path; and controlling a switching connection line according to the channel connection requirements and the channel route. According to the application, the channel connection requirements and the attribute information of the target switch relay instrument are determined through a test request, the connection line is automatically controlled and adjusted, the efficiency of switching of the connection line is improved, the efficiency of chip testing is ensured, and the use experience of users is improved.

The utility model discloses a kind of packing tape production line winding mechanisms, including lifting device and the fixed reel fixed frame with its one side, reel fixed frame is equipped with winding drum, reel fixed frame contains rotating disc, support rod, support frame etc.: rotating disc one side is connected lifting device, the other side fixed center table, center table is fixed with support rod center;Support rod central axis has multiple sliding cavities, sliding cavity is slidably connected with sliding frame;Support rod center is rotatably equipped with rotating shaft rod, rod body is equipped with silk teeth, sliding frame is screwed with rotating shaft rod through silk teeth, rotating shaft rod one end is connected hand wheel and is drawn out support rod, in addition, support rod outer wall is opened along axis and is received slot, slot is embedded with support frame, support frame two ends are connected with two groups of linkage rods, linkage rod is rotatably connected with adjacent sliding frame respectively;Received slot two ends are opened with sliding cavity and are opened with sliding slot hole, linkage rod is movable in sliding slot hole. The mechanism aims to realize the winding function of installation convenient, height adjustment accurate, winding stable.

The utility model provides a quick-change variable-pitch adsorption device for an end effector of an industrial robot, which can be applied to the tail end of the industrial robot. In automatic production, products are usually machined in groups, the distance needs to be adjusted, and a part of work stations need to be switched to be compatible with different products. In the prior art, the defects of complex structure, low precision, poor universality and inconvenience in switching exist in pitch changing, quick changing and adsorption functions. The device has the advantages that high-precision pitch changing can be achieved, products are made to be neat, the pitch is changed, universality is high, and the device can adapt to various products; the quick-change function is quick, convenient and high in stability, and time and labor are saved; the single up-and-down adsorption function is achieved, products of special shapes or uneven weights are firmly adsorbed, and the device is particularly suitable for carrying round bars of about 10 Kg; the whole structure is simple, the principle is clear, manufacturing cost and maintenance difficulty are reduced, operation and troubleshooting are facilitated, production efficiency and product quality are effectively improved, and diversified production requirements are met.

The embodiment of the application provides a kind of vehicle-mounted instrument system switching method, device, system, vehicle and storage medium, method is applied to vehicle-mounted instrument component, and the preset storage area of the vehicle-mounted instrument component stores the instrument system software package corresponding to several kinds of vehicle types;Method includes: in response to instrument system switching operation, display vehicle type list;Vehicle type list includes several vehicle type identifiers;The target vehicle type identifier is selected in vehicle type list, and the software package corresponding to target vehicle type identifier is acquired from the preset storage area, without the aid of external server to download system software package, directly according to target instrument system software package, switches to target instrument system, easy to operate, improves instrument system switching efficiency.

This invention discloses an intelligent switching device for the co-production of multiple car models on a gate loop line. It includes a four-sided heavy-duty turntable, a fixture platform, a double-layer fixture library, an loading robot, a welding robot, and an unloading robot. The four-sided heavy-duty turntable is fixedly mounted on the ground to the left of the double-layer fixture library. The fixture platforms are positioned on both the turntable and the library and can slide between them. The loading robot is located on the lower left side of the turntable, the unloading robot on the lower right side, and the welding robot above it. One to ten fixture platforms are provided to enable switching production for up to ten car models on the corresponding platforms. This invention features a compact design, high fixture switching efficiency, and the ability to support mixed-line production of ten car models, effectively improving the car production cycle time.

The utility model relates to the technical field of automobile transmissions, and discloses a machining center milling synchronizer conical ring locking surface quick-change tool which comprises a base, a clamping block, a clamping block and a clamping block. The taper positioning part is used for centering the machined part and comprises a taper positioning mandrel; the angular positioning part is used for carrying out angular limiting on the machined part and comprises an angular positioning pressing plate; the axial positioning part is used for axially limiting the machined part and comprises an M10 * 40 inner hexagon screw; and the elastic adjusting piece is used for adjusting the height of the taper positioning mandrel and comprises a compression spring. By arranging the elastic adjusting piece, the taper positioning mandrel can float in the axial direction, and the problem that the axial positioning height is not accurate due to the change of the diameter of the mouth surface of a product is solved; when different types of products are switched, the machining requirement can be met only by replacing the taper positioning mandrels with different opening surface diameters, the switching efficiency is high, and the tool preparation amount is greatly reduced.

This invention proposes a robot with easily switchable wheeled and legged structures, comprising a main body module and a replaceable module. The main body module includes a body frame and a thigh assembly, with a first joint docking structure at the lower part of the thigh assembly. The replaceable module is either a legged actuator or a wheeled actuator. The legged actuator includes a lower leg assembly and a foot assembly connected to the lower part of the lower leg assembly, with a second joint docking structure at the upper part of the lower leg assembly for joint connection with the first joint docking structure. The wheeled actuator also has a second joint docking structure at the upper part for joint connection with the first joint docking structure. This invention achieves standardized and rapid interchangeability between legged and wheeled actuators by providing a first joint docking structure at the lower part of the thigh assembly and identical second joint docking structures at the upper parts of both the legged and wheeled actuators.