24results about How to "Reduce switching times" patented technology

The invention discloses a die switching device, a crimping station die switching method and wiring harness processing equipment, the die switching device comprises a rack, a translation mechanism, a sliding mechanism and a supporting mechanism, the sliding mechanism is arranged on the upper surface of the rack, the translation mechanism is connected with the sliding mechanism, the sliding mechanism is matched with at least two sets of dies, and the supporting mechanism is arranged on the upper surface of the rack. The supporting mechanism is arranged on the rack corresponding to a crimping station of the die, the translation mechanism can drive the sliding mechanism to drive the adaptive die to horizontally move so as to switch the target die to the crimping station, and the supporting mechanism can support the die at the crimping station. The sliding gap possibly existing in the sliding mechanism is counteracted through the supporting effect, and it is ensured that the die is always kept at the accurate position in the crimping process.

The disclosure provides a communication control method, device, equipment, chip and medium, wherein the communication control method comprises: determining an initial uplink resource of a first cell, wherein the initial uplink resource is used for uplink transmission of the first cell; determining a first uplink resource according to the initial uplink resource; transmitting a first signal of a second cell according to the first uplink resource, wherein the first signal is used for determining downlink channel quality of the second cell, and the second cell multiplexes the initial uplink resource of the first cell; and maintaining the first uplink resource. The technical problem that in the prior art, in the carrier rotation scene, the number of cell switching is large, the source cell needs to wait for a long time before the uplink transmission can be recovered, and the communication performance is affected is solved.

The invention belongs to the technical field of motor control, and discloses a motor model prediction control method based on asymmetric hybrid vector pulse width modulation. Six sectors of a space voltage vector are divided into odd number sectors and even number sectors. In a singular sector, only a zero vector and a corresponding non-zero effective vector are adopted to perform two-section asymmetric synthesis, so that only one switching state change occurs in one period; in an even number sector, a non-zero effective vector in the sector, a non-zero effective vector in an adjacent odd number sector screened by a cost function and a zero vector are adopted to carry out three-section type asymmetric synthesis, and unnecessary switching actions are avoided while the current tracking performance is ensured. By means of the method, targeted control over the switching times is achieved in different sectors, and the average switching frequency is reduced. In the even-number sectors, optimization is carried out between the non-zero effective vectors of the adjacent odd-number sectors, the current prediction error is further optimized under the condition that the switching frequency is not obviously increased, and the current performance is ensured.

The application discloses a head tracking method in a conference room multi-camera system and related devices, and the method comprises the following steps: collecting video stream data in the conference room based on the multi-camera system, and performing head tracking processing on the video stream data based on a multi-target tracking algorithm to obtain head tracking data in the video stream data; performing glass reflection head filtering processing on the head tracking data in the video stream data based on a pre-trained glass reflection filtering model to obtain filtered head tracking data; performing glass inside and outside distinguishing processing on the filtered head tracking data based on a monocular depth estimation glass boundary distinguishing mode to obtain head tracking data in the glass, and displaying the head data in the glass in real time to a specified area of a conference display screen. In the embodiment of the application, the tracking accuracy can be improved in the scene of multiple people overlapping in the conference room, and the interference of glass reflection and data inside and outside the glass can be effectively removed.

The embodiment of the invention provides a signal processing method and circuit, a chip and electronic equipment, and the method comprises the steps: carrying out the PWM modulation of an input signal, and obtaining a PWM positive signal and a PWM negative signal; outputting a positive output signal and a negative output signal according to the PWM positive signal and the PWM negative signal; wherein in response to the fact that the absolute value of the amplitude of the input signal is larger than a threshold value, one of the positive output signal and the negative output signal does not comprise pulses, and the other one of the positive output signal and the negative output signal comprises two pulses in one pulse period. According to the scheme, the performance of the output signal can be improved while the performance is improved.

The application relates to the technical field of air conditioner intelligent control, and specifically discloses a multi-heat-exchanger intelligent defrosting control method and device based on multi-parameter fusion and heat load prediction and a storage medium, which comprises the following steps: collecting multi-dimensional operation data; performing feature calculation on the collected original data to obtain fin temperature change rate, evaporation pressure fluctuation rate and air enthalpy difference absolute value; constructing a fuzzy reasoning system to generate a frost formation confidence value; constructing a feedforward neural network model to generate an optimal defrosting cycle prediction value; generating a defrosting trigger instruction or a continuous monitoring instruction according to the confidence interval and the cycle achievement situation; detecting and pre-adjusting the pressure difference between the high-pressure side and the low-pressure side to execute switching between the running heat exchanger and the defrosting heat exchanger; collecting fin temperature data of the defrosted heat exchanger to generate a defrosting completion judgment result. Through improvement of the defrosting method, accurate frost formation state sensing, self-adaptive adjustment of the defrosting cycle, optimization of the judgment strategy and smooth control of the switching process are realized.

This invention discloses a deterministic path set planning method for low-Earth orbit (LEO) satellite networks based on the spatial domain. Based on predictable LEO satellite topology information, a shortest path algorithm is used to obtain a set of lateral paths that meet the deterministic service transmission delay requirements. The lateral path set within the j-th time slice is compared with the lateral path set within the (j+1)-th time slice. The path with the most overlapping inter-satellite links is selected as the path in the (j+1)-th time slice corresponding to a path in the j-th time slice, and so on, to obtain the set of longitudinal paths within the complete service time. The impact of different longitudinal path sets on transmission delay is measured to obtain an optimal deterministic path set. This invention determines the path search range by dividing the spatial domain and extended domain, maintaining path consistency, and reducing the number of path switching times within the service transmission time while ensuring that deterministic services meet the delay threshold, thereby reducing the overall transmission delay within the complete service time and improving the deterministic service capability.

The application discloses an improved deadbeat control method for reducing switching loss, and is implemented according to the following steps: step 1, modeling a single-phase circuit of an MMC, and meanwhile, establishing a single-phase upper and lower bridge arm node current equation; step 2, discretizing the established equation, and taking a ring current as a reference quantity to establish a deadbeat control system; step 3, collecting voltages of upper and lower bridge arms of each phase of the MMC and discriminating voltage discretization; step 4, operating the upper and lower bridge arm voltages output by step 2 to obtain the number of sub-modules that should be turned on for each phase of the upper and lower bridge arms of the MMC in the next control period; and step 5, sorting each sub-module voltage of each phase after being processed in step 3, and meanwhile, turning on or turning off specific sub-modules according to the number of sub-modules that should be turned on for each phase of the upper and lower bridge arms in the next control period obtained in step 4. The application can improve system dynamic performance, improve output voltage quality and reduce the number of times of turning on sub-modules of the system.

This utility model discloses a machining fixture for the main boom of an aerial work platform, comprising: a machine tool worktable and an end positioning and clamping device, a rotary clamping device, and a tail-side pushing and clamping device mounted on the machine tool worktable. The end positioning and clamping device, the rotary clamping device, and the tail-side pushing and clamping device are arranged sequentially at the front, middle, and rear of the machine tool worktable, and the three can automatically and collaboratively clamp the main boom of the aerial work platform. This application achieves automatic positioning and multi-point collaborative clamping of the main boom workpiece, eliminating positioning errors caused by manual operation. The hydraulic drive system ensures synchronous operation of each clamping device, shortening the clamping preparation time. The adaptive adjustment mechanism is compatible with workpieces of different specifications, reducing the number of tooling changes. The composite clamping method disperses contact stress, preventing clamping deformation of thin-walled structural parts. The multi-directional constraint mechanism effectively suppresses machining vibration and improves the positional accuracy of hole machining.

The application discloses a distributed adaptive framing output method based on large-range remote sensing images, and relates to the technical field of remote sensing image processing. The preprocessed large-range remote sensing images are stored in a COG format, the framing size and quantity are dynamically adjusted in combination with the target area range and resolution, the tasks are distributed by a data locality perception scheduler after Z-order curve sorting, the computing nodes load the framing data with a buffer area, the framing data is interpreted by a random forest, and the buffer area is cropped, finally, the virtual data set is aggregated, efficient distributed parallel processing of the large-range images is realized, the I / O bottleneck and the computing resource limitation are effectively relieved, the context missing problem on the framing boundary is solved, the intelligent interpretation efficiency and precision are improved, and the multi-resolution on-demand rendering and elastic expansion are supported to adapt to the data scale growth.

The invention relates to a parameter debugging method and device, electronic equipment and a computer program product, and belongs to the technical field of games. The method comprises the following steps: displaying a parameter setting interface in response to a setting instruction, wherein the parameter setting interface comprises parameter value setting controls of a plurality of parameters; responding to a batch setting instruction for at least one target parameter, and generating one or more debugging parameter values of the target parameter; displaying a game operation interface in response to the interface switching operation, the game operation interface including a batch debugging control, a game match scene and a virtual character, and the batch debugging control including a debugging parameter use control corresponding to a plurality of debugging parameter values of at least one target parameter; and determining one or more target debugging parameter use controls from the debugging parameter use controls, and performing game operation according to debugging parameter values corresponding to the target debugging parameter use controls. Through batch setting and debugging of the parameters, the interface switching frequency can be reduced, and the parameter debugging efficiency is improved.

The present application relates to the technical fields of hydraulic system, more particularly, to a large-diameter digital throttle valve and a digital governing valve, comprising an adjustable throttle valve and at least one two-position two-way electromagnetic valve I, wherein the adjustable throttle valve and the two-position two-way electromagnetic valve I are arranged in parallel. The large-diameter digital throttle valve is connected in parallel with a plurality of two-position two-way valves and an adjustable throttle valve, so as to realize the complementary advantages of the two, on the one hand, different throttle areas can be realized by using different two-position two-way valve combinations, on the other hand, the parallel adjustable throttle valve can realize continuous change of the throttle area, avoiding high-frequency switching of the two-position two-way valve and reducing the flow and pressure impact caused by the digital valve.

The application relates to the technical field of patrol path optimization, and discloses an intelligent recommendation system for an external stand pipe inspection path, which comprises the following: an inspection unit records facade positions, center heights and inspection operation modes; an evaluation unit performs risk assessment on each inspection unit according to historical defect information, stand pipe types and environmental exposure conditions, obtains an inspection unit risk level, and forms an inspection unit time window constraint; a processing unit constructs an inspection service graph; a recommendation unit determines a to-be-inspected unit, generates a candidate inspection path on the inspection service graph, combines the candidate inspection paths into multiple inspection task packages, performs resource scheduling in combination with skill information and available time information of an inspection team, and obtains an inspection path recommendation result corresponding to each inspection team. The application reduces the overall inspection time and the number of high-cost inspection operation mode switching times, and improves the external stand pipe inspection safety and operation and maintenance management efficiency.

The utility model discloses a cover plate for a battery box body. The cover plate comprises a base plate and a sliding plate, the sliding plate is arranged on the base plate and is in sliding connection with the base plate; a plurality of first magnetic strips are embedded in the surface of the base plate in the PA-axis direction, a plurality of second magnetic strips are embedded in the surface of the sliding plate in the PA-axis direction, the first magnetic strips and the second magnetic strips are arranged at intervals in the PB-axis direction in a gradient decreasing trend, a first inserting groove is formed in one side of the base plate, and a second inserting groove is formed in the position, on the same side of the base plate, of the sliding plate. At least one magnetic sheet is inserted into each of the first slot and the second slot, the extraction direction of the magnetic sheets is perpendicular to the arrangement direction of the magnetic strips, and the magnetic sheet group and the magnetic strip array attract each other to form a three-dimensional orthogonal magnetic circuit; the cover plate is simple in structure, ingenious in design and high in practicability, the limitation that the size of a traditional cover plate is fixed is broken through through innovative fusion of a magnetic circuit and a sliding mechanism, and a flexible and efficient solution is provided for protection of a battery pack box body in a modularized and self-adaptive adjusting mode.

The utility model discloses a blanking device for a quartz sand acid leaching process. The blanking device comprises a polytetrafluoroethylene ball valve, the blanking control block is fixedly connected with the tetrafluoro ball valve, a through hole matched with a valve hole of the tetrafluoro ball valve is vertically formed in the blanking control block, and a groove orthogonal to the through hole is transversely formed in the blanking control block; and the inserting plate is slidably connected into the groove and used for controlling opening and closing of the through hole, the end, connected with the groove, of the inserting plate is an arc-shaped end, and the upper side face and the lower side face of the inserting plate are each provided with a fluororubber layer in interference fit with the discharging control block in a lining mode. The discharging control block and the inserting plate which are in sliding connection are arranged at the outlet end of the tetrafluoro ball valve, material discharging control can be achieved through the inserting plate, the opening and closing frequency of the tetrafluoro ball valve is effectively reduced, the service life of the tetrafluoro ball valve is prolonged, and the production cost is greatly reduced.

The utility model relates to the technical field of steel bar machining, and discloses a steel bar bending die and a steel bar bender. The steel bar bending die comprises a base, a locking assembly and a bending assembly, the base is provided with a locking groove, a first containing groove and a second containing groove, and the locking groove is used for allowing a locking shaft of a steel bar bending machine body to penetrate through; the locking assembly comprises a first locking piece, a first elastic piece, a second locking piece and a second elastic piece. The first locking piece and the second locking piece clamp the locking shaft extending into the locking groove under the elastic acting force of the first elastic piece and the second elastic piece correspondingly, locking of the steel bar bending die and the steel bar bending machine body is achieved, the locking shaft can rotate to eject the first locking piece and the second locking piece open, the locking shaft can be separated from the locking groove, and the steel bar bending die and the steel bar bending machine body are locked. The unlocking of the steel bar bending die and the steel bar bending machine body is realized, the automatic locking function of the steel bar bending die is realized, the automation of die switching is easy to realize, the labor cost is reduced, and the die switching time is shortened.

The application provides a high-performance video data distribution method, comprising the following steps: arranging multiple threads on multiple CPU cores of a transcoding server; according to video playing requests of multiple user clients, distributing the video playing requests of the multiple user clients to the multiple threads of the transcoding server, so that each thread distributes video transmitted by a camera to a corresponding client browser according to the video playing request of the user client allocated to the thread. The application arranges all threads on multiple CPU cores of a transcoding server, and the threads in the multiple CPU cores can distribute video data to multiple client browsers in parallel, so that the number of thread switching is reduced, while the data can be distributed by using multiple threads, and the network throughput is greatly improved.

This application provides a routing switching method, apparatus, computing device, and computer storage medium. The routing switching method includes: determining routing configuration information; determining at least two routes for a destination network address from a target routing table according to the routing configuration information, wherein the at least two routes include a primary route and at least one backup route; and sending the at least two routes corresponding to the destination network address to a forwarding end, wherein the forwarding end is used to enable at least one backup route to perform data forwarding operations in the event of a failure of the primary route among the at least two routes. The technical solution provided by this application reduces the interruption time of data forwarding tasks.

The utility model provides an attaching device and a reinforcing device, which comprise an attaching mechanism, an attaching platform and a feeding mechanism, and the feeding mechanism is used for supplying auxiliary materials; the attaching mechanism comprises an attaching driving assembly and a plurality of attaching assemblies, the attaching assemblies are used for sucking the auxiliary materials on the feeding mechanism, and the attaching driving assembly can selectively drive at least one attaching assembly to be switched between the attaching platform and the feeding mechanism; and the auxiliary material is sucked by the suction device so as to fit the sucked auxiliary material to an attached part on the attaching platform. According to the auxiliary material attaching device, when a plurality of auxiliary materials need to be attached to the attached part, the auxiliary materials on the feeding mechanism can be sucked through the attaching assemblies, the attached auxiliary materials sucked by the attaching assemblies are attached to the attached part on the attaching platform, the switching frequency of the single attaching assembly between the feeding mechanism and the attaching platform is reduced, and the attaching efficiency is improved. And the production efficiency is improved.

The present application relates to the technical field of stationary contact production, and discloses a stationary contact and a riveting forming machine thereof, the stationary contact comprising a main body, the middle part of the main body being bent to form a U-shaped structure, the middle part of the U-shaped structure being provided with a positioning arc surface, both ends of the stationary contact being provided with rivet point holes, and the end part of the stationary contact being provided with a chamfer; the riveting forming machine comprises a machine table, the machine table being provided with a material guide seat, the material guide seat being provided with a groove for feeding raw materials, one end of the groove being provided with a material pushing cylinder; the groove is provided with a riveting groove, the riveting groove is provided with a die groove, both sides of the riveting groove and located in the groove are provided with end grooves, the top of the material guide seat is fixedly provided with an inclined plate, and the inclined plate is provided with through holes corresponding to the end grooves. The riveting forming machine integrates stamping, bending, punching and chamfering processes, simplifies the switching of processes on different equipment, reduces the number of switching times of products in different processes, reduces manual clamping operation, improves production efficiency, and reduces processing errors of products.

A DC / AC conversion device and a power supply system. The DC / AC conversion device comprises a transformer, a DC / AC conversion circuit located at the primary side of the transformer, a rectification circuit and a phase switching circuit located at the secondary side of the transformer, and a controller; wherein: the transformer is coupled with the DC / AC conversion circuit, and is adapted to step up a first alternating current signal output by the DC / AC conversion circuit to obtain a second alternating current signal; the rectification circuit is coupled with the transformer, and is adapted to rectify the second alternating current signal to obtain a second direct current signal; the phase switching circuit is coupled with the rectification circuit, and is composed of a plurality of switching tubes, and is adapted to phase switch the second direct current signal to obtain a third alternating current signal, the third alternating current signal being adapted to be input to an alternating current grid; and the controller. By using the above scheme, the loss of the switching tube in the DC / AC conversion device can be reduced.

The application relates to the field of analytical instruments, and discloses an ICP emission spectrometer for new material detection and a use method, which comprises a case and a switching mechanism, the switching mechanism comprises a switching box, a plurality of sealing rings are arranged at the top of the switching box, a switching valve is rotationally connected in the switching box, the switching valve comprises a rotating ring, a plurality of cylindrical valves are fixedly connected to the inner side of the rotating ring, an adjusting piece is arranged at the outer side of the switching box, the adjusting piece comprises rolling magnetic balls arranged outside the cylindrical valves, a position calibration baffle is slidably connected in the switching box, and a strong magnetic block one is fixedly connected to the bottom of the position calibration baffle. In the application, the sampling tube does not need to be repeatedly disassembled and assembled, the sealing property during switching is guaranteed through cooperation of the strong magnetic locking and the cylindrical valve, the rolling magnetic balls are limited by the position calibration baffle, the channel positioning accuracy is ensured, sample cross contamination is avoided, the switching time for multi-sample detection is shortened, and the batch detection efficiency is improved.

The invention discloses an H-bridge low-frequency switch control method of a cascaded half-bridge converter, which is characterized in that a direct-current side adopts an in-phase carrier laminated modulation strategy, zero level duration is increased at a signal zero crossing point, the action times of a direct-current side switching device near the zero crossing point are reduced, and the switching loss of an H-bridge under closed-loop control is effectively inhibited. An alternating current side phase control algorithm is provided for multiple bridge arms, the bridge arms are divided into a leading group and a lagging group, control signals of sub-modules are redistributed based on fundamental wave phases, meanwhile, two groups of phase-complementary power frequency control signals are distributed for H bridges of the bridge arms, and on the premise that the output characteristics of the converter are not affected, the control signals of the sub-modules are distributed to the H bridges of the bridge arms. All H-bridge switching tubes only act twice in a fundamental wave period, strict power frequency switching and zero voltage switching are achieved, and switching loss is reduced to the minimum. And meanwhile, a battery online energy balancing function based on SOC sorting is integrated, so that the reliability of the converter is improved and the service life of the converter is prolonged on the premise of keeping relatively high output waveform quality, and the switching frequency of an H bridge under closed-loop control is reduced.

This invention discloses a method, apparatus, and system for voltage modulation of a switched reluctance motor based on effective vectors, belonging to the field of motor drive control, including: obtaining the rotating voltage component u of the switched reluctance motor corresponding to a voltage reference value during the current switching cycle. αβ and zero-sequence voltage component u z ; for u αβ By decomposition, the rotating voltage components U of the two converters in the open-winding motor driver are obtained. αβ1 and U αβ2 And calculate the action time T' of the first effective vector and the second effective vector of the two converters respectively. x1 T' y1 T' x2 and T' y2 This enables the two converters to achieve u z The modulation, and the rotating voltage components are U αβ1 and U αβ2 According to T' x1 T' y1 T' x2 and T' y2 The duty cycle of each bridge arm in each converter is calculated, and the remaining time is filled using a single zero vector; the switching signal of each bridge arm in both converters is determined based on the duty cycle. This invention achieves modulation of both rotating voltage components and zero-sequence voltage components simultaneously through effective vector allocation, thereby reducing the number of switching operations within each switching cycle.