56 results about "Constant waveform" patented technology

The invention relates to the technical field of continuous wave soldering, in particular to selective continuous wave soldering equipment based on electronic components, which comprises a base, a conveying unit, a soldering unit, a guide component and an auxiliary component. According to the welding device, firstly, the upper die base and the lower die base are closed and locked, a welding area is accurately opposite to the nozzle by means of the guide assembly, the welding quality and welding efficiency of follow-up welding are ensured, and batch rapid production is facilitated; the upper die base and the lower die base serve as first-stage covering protection, and the guide assembly limits the height of the nozzle; the tin solution is cooled before welding to form second-stage temperature protection, then third-stage protection is formed by means of nitrogen filling in in the welding process, fourth-stage protection is formed through preheating and cooling protection in the auxiliary assembly, in conclusion, through the four-stage temperature protection, the problem that components are damaged due to high temperature is solved, and the welding quality is improved.

The present invention specifically relates to a motor U-shaped flat wire continuous wave winding flexible forming equipment and forming method, the device includes: a grasping device, a rotary clamping cylinder, a linear bearing, an X-axis servo electric cylinder, a Y-axis servo electric cylinder and a forming die, and the above components are all fixedly connected to the workbench; the grasping device is placed on one side of the workbench; the rotary clamping cylinder and the X-axis servo electric cylinder are arranged opposite to each other, the output end of the rotary clamping cylinder is fixedly connected to the left dynamic clamp, the output end of the X-axis servo electric cylinder is fixedly connected to the slide, and the bottom of the slide is fixedly connected to the top of the linear bearing; the slide is provided with a right static clamp and a clamping cylinder, the output end of the clamping cylinder is provided with a right dynamic clamp, and the right static clamp and the right dynamic clamp are arranged opposite to each other; the Y-axis servo electric cylinder, the forming punch and the forming die are arranged between the rotary clamping cylinder and the slide, the forming punch is arranged at the output end of the Y-axis servo electric cylinder, and the forming punch and the forming die are arranged opposite to each other.

Methods, systems, and devices for wireless communication are described. A first wireless device may receive, from a second wireless device, a first frequency modulated continuous waveform (FMCW) signal via an orthogonal frequency division multiplexing (OFDM) channel. The first wireless device may generate a second FMCW signal based on a set of FMCW parameters associated with the first FMCW signal. The first wireless device may combine the first and second FMCW signals and filter the combined FMCW signal. The first wireless device may sample the combined and filtered FMCW signal in a time domain. The first wireless device may estimate the frequency domain OFDM channel based on sampling the combined and filtered FMCW signal. The first and second wireless devices may communicate OFDM signals via the OFDM channel based on the estimation of the frequency domain OFDM channel.

Continuous waveforms for driving a four-particle electrophoretic medium including four different types of particles, for example a set of scattering particles and three sets of subtractive particles. Methods for identifying a preferred waveform for a target color state or a target transition when using a continuous or quasi-continuous voltage driver / controller.

The present application provides a heat exchange apparatus and an air conditioning apparatus. The heat exchange apparatus comprises a heat exchange member and refrigerant pipes. The heat exchange member comprises a first flat portion, a second flat portion, and a first spacing portion. The first flat portion is provided with a plurality of through holes spaced apart in a first direction, and each refrigerant pipe penetrates through a through hole. The first flat portion and the second flat portion are respectively connected to two opposite sides of the first spacing portion in a second direction. The second flat portion and the first flat portion continuously extend in the first direction. The first spacing portion extends in a continuous wave shape in the first direction. The second direction intersects with both the axis of each through hole and the first direction. In this way, the defrosting efficiency of the heat exchange apparatus can be effectively improved.

The invention discloses a pressure balancing part for a continuous wave mud pulse generator, and relates to the technical field of underground drilling tool equipment. The device comprises an axially telescopic transmission shaft piece and an auxiliary transmission piece, the auxiliary transmission piece is fixed on a mounting sleeve of the pulse generator, a rotary valve of the pulse generator is connected to a telescopic shaft of the transmission shaft piece, and the telescopic shaft of the transmission shaft piece penetrates through the rotary valve to be connected with the auxiliary transmission piece. A rotary valve rotor of the rotary valve is fixedly connected with a telescopic shaft of the transmission shaft piece, and a rotary valve stator is rotationally connected with the rotary valve rotor; when the transmission shaft piece drives the rotary valve rotor to rotate relative to the rotary valve stator, the telescopic shaft drives the rotary valve to integrally move in the axial direction of the mounting sleeve under the connection matching of the telescopic shaft of the transmission shaft piece and the auxiliary transmission piece. In the slurry throughput change process of the rotary valve, the rotary valve is made to make adaptive movement along the rotating axis of the rotary valve through the cooperation effect of the transmission shaft piece capable of stretching and retracting in the axial direction and the auxiliary transmission piece, so that the pressure at the position of the rotary valve is dynamically balanced.

The present application relates to the technical field of power cable, in particular to a kind of cable installation device for overhead line based on tension self-balancing.The cable is externally provided with inner sheath, the outer surface of the inner sheath is provided with outer sheath, and the one end of the cable is provided with fixing mechanism, and the fixing mechanism is used to fix the cable on the telegraph pole.The present application is provided with a plurality of tooth protrusions which are uniformly distributed on the outer surface of the inner sheath, so that a continuous wave-shaped structure is formed between the tooth protrusions and the tooth groove, and a metal clamping strip is additionally provided to further enhance the surface strength of the inner sheath, and the locking teeth and the clamping block are cooperated with each other to uniformly disperse the stress at the clamping plate to the tooth groove and the metal clamping strip.Meanwhile, the inner sheath is synchronously locked by the locking plate and the second locking assembly, so that the stress distribution on the surface of the inner sheath is further dispersed, and the risk of fracture of the inner sheath is reduced.

Techniques for wireless communication are disclosed. Aspects of the present disclosure relate to PC-FMCW based MIMO sensing operations. In an aspect, an NB phase code scrambling sequence may be associated with different MIMO antenna ports, where the FMCW for each MIMO antenna port is multiplied by the associated NB phase code scrambling sequence for that MIMO antenna port to produce a PC-FMCW. Then, as part of a MIMO sensing operation, each MIMO antenna port may transmit its respective PC-FMCW. Other aspects of the present disclosure relate to the communication of a MIMO sensing capability indication that can be used to determine a sensing configuration for MIMO sensing operations.

This invention discloses a seismic surface wave array tomography method, storage medium, and device, relating to the field of surface wave tomography technology. The method includes: calculating the cross-correlation function between all pairs of seismic stations based on continuous waveform data recorded by seismic stations; determining the size of the subarray based on the spacing and number of seismic stations; processing all cross-correlation functions within each subarray using a linear Radon transform to obtain the dispersion curve of each subarray; moving the subarray along both the horizontal and vertical directions with a certain step size, and using a linear Radon transform to obtain the dispersion curves of subarrays at other positions; using the dispersion curves of different subarrays as input data, and constructing the phase velocity values ​​of each grid point in the study area using the seismic array tomography method. The solution of this invention can improve the imaging resolution of seismic array processing technology.

The application discloses a kind of continuous wave windings of axial motor, it is related to motor technical field, including annular stator core, stator core is equipped with several gaps along the axial direction;Several integrally formed windings, several windings are sequentially stacked along the axial direction, S-shaped curve is equipped on winding and gap is matched, adjacent winding is misaligned at gap, and several windings form the circulation of ladder shape;Structure gasket, structure gasket is located between adjacent winding;The radial straight-through cooling flow channel of the S-shaped winding integrally pressure casting formed with the axial ladder-shaped stacking structure, the electrical performance and heat management capability of the system optimization of axial flux motor winding forming process are realized by cooperation structure gasket construction;Pressure casting molding eliminates the bending work hardening and insulation layer damage risk of traditional flat wire winding, maintains the original crystal structure and electrical conductivity of copper material, while avoiding the uneven welding point resistance, high failure rate and low production efficiency and other problems caused by multi-section welding.

This application relates to a fault diagnosis method, system, device, and medium for vehicle communication networks. It involves acquiring continuous waveform data from the physical layer of the vehicle communication network, preprocessing the waveform data to obtain at least one protocol data unit (ARD) signal block of a preset length. Each ARDR signal block includes multiple logical bits, and each logical bit corresponds to K consecutive sampling points in the continuous waveform. K is determined by the protocol rate and physical layer sampling rate of the vehicle communication network. The ARDR signal block is then input into a trained neural network model. The neural network model includes a feature extraction layer, which uses a convolution kernel of size K and stride K to perform convolution operations on the input signal block. Based on the output of the neural network model, the fault diagnosis result of the vehicle communication network physical layer is determined. This significantly improves the identification accuracy and generalization ability of various faults caused by abnormalities in different bit positions.

The utility model relates to the technical field of air purification and disinfection, and provides a high-pressure high-energy tunnel particle sterilization mechanism and a device thereof, the high-pressure high-energy tunnel particle sterilization mechanism comprises an outer tubular column, an inner conductor and a fixing frame, the outer tubular column is internally provided with a channel for the inner conductor to pass through, the inner wall of the channel is provided with threads, the outer tubular column is vertically arranged on the fixing frame, and the outer tubular column is vertically arranged on the fixing frame. The inner electric conductor is a metal electric conductor with the outer side face in a continuous corrugated shape, the height of the inner electric conductor is the same as that of the outer tubular column, the inner electric conductor is located in the middle of the outer tubular column, and the lower end of the inner electric conductor is vertically and fixedly arranged on the fixing frame. A high-pressure high-energy particle release ring is formed by the outer tubular column and the inner electric conductor, so that a high-energy particle tunnel body is formed between the outer tubular column and the inner electric conductor, particles in the tunnel body are impacted and ionized, bacteria, viruses and particles passing through the tunnel body are impacted and ionized, original structures are damaged, and the bacteria, the viruses and the particles die instantly. The disinfection and sterilization effects are achieved.

This invention discloses a biomimetic blade, impeller, and fan with a wave-like surface structure. The blade features a continuous wave structure along its chord length. The wave structure includes a first wave structure, a gentler wave structure, and a second wave structure arranged sequentially along the chord length. This invention targets a closed axial flow impeller, employing a wave-like biomimetic design on the blade surface. The wave pattern is primarily concentrated from 50% of the blade height to the blade tip, aiming to reduce noise from the blade tip to 50% of the blade height. During operation, the area with the highest sound pressure level is concentrated above 50% of the blade height to the blade tip, with the highest sound pressure level near the blade tip. The wave-like design at this location effectively improves the area of ​​airflow energy dissipation and accumulation, thereby reducing noise.

A system includes a controller configured to reconstruct a continuous waveform into a discrete analog version. The system includes a numerical optimizer configured to determine the frequency of a pulse sequence. The numerical optimizer uses radial motion mode frequencies and desired gate times. The numerical optimizer generates the pulse sequence by disabling phase space trajectories, unwrapping spins and motion, and limiting the Rabi frequencies of motion sideband transitions. The system also includes a display configured to illustrate the discrete-frequency modulated pulse sequence based on the determined frequencies.

The utility model provides a front and back universal leveling machine. The utility model discloses a front and back universal leveling machine which comprises a rack, a lower roller assembly, an upper roller assembly, a feeding assembly and an adjusting assembly. Wherein the rack is fixedly arranged on the horizontal ground; the lower roller assembly is arranged at the bottom of the rack and is connected with driving equipment; the upper roller assembly is slidably arranged on the rack in the vertical direction and located above the lower roller assembly, and a continuous wavy roller gap with the variable width is formed by the upper roller assembly and the lower roller assembly. The feeding assembly is arranged on the rack in a sliding mode in the vertical direction and can be connected with the lower roller assembly. The adjusting assembly is arranged on the machine frame in a sliding mode in the vertical direction and can be adjusted to the position with the height equal to that of the upper roller assembly. The front and back universal leveling machine can adapt to plates in different uncoiling modes, and has the advantages of being thorough in stress eliminating effect and good in leveling effect.

The invention relates to a stator winding preparation method, a stator winding, a stator assembly and a permanent magnet motor. The stator winding preparation method comprises the steps that 18 conductors used for winding 9 winding branches of three phases are sequentially laid and wound in a wave winding mode; during tiled winding, the two effective parts of the wave winding pattern of the same-layer overline formed by wave winding of any conductor are arranged on the same layer, and the two effective parts of the wave winding pattern of the two adjacent groove layers are arranged in an up-and-down staggered layer manner; the 18 conductors which are laid and wound are coiled from one ends of the conductors to the other ends of the conductors; during coiling, the coiling direction of the 18 conductors is the direction in which the serial number of the conductor grooves is reduced, and the radial outer sides of the 18 conductors are the sides where the groove layers with the serial number of 1 of the conductor grooves are located. Through the specified coiling process, the problem that the NVH performance of the odd-number-layer stator winding of the continuous wave winding of the permanent magnet motor is poor due to the improper preparation method can be solved.

The invention relates to the technical field of Beidou signal analysis, in particular to a Beidou anti-interference calibration method and system based on an array antenna, and the method comprises the steps: employing a uniform linear array antenna with M array elements as a receiving array in a Beidou positioning system, and transmitting a predefined beacon signal through an external transmitter with a known position; receiving a beacon signal and a direct path reference signal forwarded by at least one forwarding device independent of Beidou, the beacon signal and the reference signal having the same carrier frequency or channel, and the waveform of the beacon signal being a constant waveform, a cosine waveform or a spread spectrum waveform; after the composite signal is received, spectrum analysis is carried out, a power peak value is searched in a spectrum neighborhood of the beacon signal to determine frequency deviation, and frequency compensation is applied to enable the frequency deviation to approach zero; extracting beacon signal features from the composite signal after frequency compensation, and estimating an amplitude error and a phase error of each array element; the delays of array elements are calculated during estimation, the delays comprise theoretical delays and any additional delays, and the theoretical delays are obtained through accumulation calculation according to incident angles of beacons; and performing amplitude and phase compensation on the composite signal of each array element, correcting amplitude and phase errors, and obtaining a calibrated antenna array signal. According to the invention, the problems of signal frequency deviation, amplitude error and phase error of the Beidou system in a complex interference environment are solved.

The invention relates to the field of petroleum drilling equipment, in particular to a high-speed continuous wave pulser for petroleum drilling, which comprises a pulse generating device shell sleeve, a transmission shaft, a rotor valve plate and a stator valve plate, the transmission shaft, the rotor valve plate and the stator valve plate are mounted on the inner side of the pulse generating device shell sleeve, and a first slurry passing hole and a second slurry passing hole are correspondingly formed in the rotor valve plate and the stator valve plate respectively. The rotor valve plate and the transmission shaft are coaxially fixed, the stator valve plate is fixed to the inner wall of the pulse generating device shell sleeve, and the stator valve plate is located on the side, away from the slurry output direction, of the rotor valve plate and is in sliding fit with the rotor valve plate; a valve type filtering structure used for filtering sand particles is arranged on the side, away from the rotor valve plate, of the stator valve plate. Compared with an existing high-speed continuous wave pulser for petroleum drilling, the high-speed continuous wave pulser has the advantages of being capable of preventing gravel particles with large particle sizes in slurry from abrading the edge of a valve hole of a rotary valve, and therefore the service life of the rotary valve is prolonged.

The invention relates to a preparation method of a stator winding, the stator winding, a stator assembly and an induction motor. The method comprises the following steps of: flatly winding conductors for winding 6m branch units of three phases in sequence in a wave winding manner; during tiled winding, two effective parts of any wave winding pattern formed by wave winding of any conductor are arranged in an up-and-down staggered layer manner, and the effective parts of the wave winding patterns in different cross-layer manners are arranged in a staggered layer manner; the 6m conductors which are laid and wound are coiled from one ends of the conductors in a circular ring shape, and the 6m conductors are coiled for n / 2 circles to the other ends of the conductors; during coiling, the coiling direction of the 6m conductors is the direction in which the serial number of the conductor slots is increased, and the radial outer side of the 6m conductors is the side where the slot layer with the serial number of 1 of the conductor slots is located. According to the invention, through the specified coiling process, the problem that the inductance unbalance amount of the continuous wave winding stator winding of the induction motor is relatively large due to an improper preparation method can be improved.

Methods and systems to validated physiologic waveform reliability and uses thereof are provided. A number of embodiments describe methods to validate waveform reliability, including blood pressure waveforms, electrocardiogram waveforms, and / or any other physiological measurement producing a continuous waveform. Certain embodiments output reliability measurements to closed loop systems that can control infusion rates of cardioactive drugs or other fluids in order to regulate blood pressure, cardiac rate, cardiac contractility, and / or vasomotor tone. Further embodiments allow for waveform evaluators to validate waveform reliability based on at least one waveform feature using data collected from clinical monitors using machine learning algorithms.

The present invention discloses a continuous wave mud pulse generator, and proposes the following scheme, which includes a drill collar and a pulser assembly and a control unit installed on the drill collar. The pulser assembly includes a hydraulic stator, a hydraulic rotor, a drive assembly and a bearing assembly installed on the drill collar, and the drive assembly is fixedly connected to the drill collar; the present invention adopts a hollow motor design to meet the torque requirement of directly driving the hydraulic rotor to move. Since the hydraulic rotor is directly driven by the rotor of the hollow motor, the structure of the pulser can be greatly simplified and mechanical failures can be reduced. At the same time, the absence of an intermediate connecting device can also make the pulser design shorter, reserving more space for the design of other sensors of the downhole instrument. The torque transmission between the motor and the rotor is transmitted through the upper hollow bearing. Compared with the slender main shaft transmission torque of the traditional scheme, the hollow bearing is larger in size and higher in strength, avoiding the influence of the instrument performance due to the deformation of the main shaft.

The invention provides a device for realizing a left-right bending-integral stamping process and a forming method, and relates to the field of bending of micro-channel corrugated flat pipes, a pressing block, a bending block and a positioner are all arranged on a rotating table, the plane where the positioner is located is perpendicular to the axis of the bending block, and the pressing block can be close to or away from the bending block; the rotating table can rotate, vertically translate and transversely translate relative to the working table; a material conveying mechanism is arranged on the workbench and can convey materials to the position between the bending block and the pressing block. The pressing block can enable the materials to be attached to the side wall of the bending block, and the overall stamping mechanism conducts stamping shaping on the materials bent left and right. According to the forming method based on the device, when the micro-channel corrugated flat pipe is produced, continuous waveforms can be converted into single waveforms to be produced one by one, and accurate shaping of the corrugation size is achieved through the overall stamping process.

The invention discloses an unsupervised deep neural network construction method based on integrated learning, and particularly relates to the technical field of neural networks, and the method comprises the steps: obtaining a continuous waveform record of an underground detector, obtaining a discrete waveform sample through preprocessing, distributing an index, constructing a pseudo-label pool, and initializing a parallel neural network; executing forward correction training based on hidden state consistency, dynamically correcting a pseudo tag and updating a network weight; sending a new round of samples into the updated network, integrating decision results and positioning an uncertain source network; a diagnostic feedback packet is generated based on the source network, and pseudo-tag pool parameters are adjusted to optimize subsequent training. According to the method, a parallel neural network architecture fusing residual connection, U-shaped coding and decoding and an attention mechanism is constructed, and a forward correction training and dynamic pseudo-label optimization strategy based on hidden state consistency is combined, so that the core technical problems of many interference signals and weak effective micro-seismic signals in the underground monitoring environment of the fractured well are effectively solved.

The present disclosure provides a prediction model training method, a seismic prediction method, a device and an electronic device, and relates to the technical field of earthquake monitoring and earthquake prediction. The training method comprises: synthesizing a plurality of aftershock data in historical seismic waveform data of a target area with preset noise data respectively to obtain a seismic precursor data set; intercepting a plurality of continuous waveform data containing small earthquake group events from the historical seismic waveform data to obtain a random event data set; determining a noise data set by generating a white noise sequence or selecting a plurality of noise segment waveform data with a magnitude below a preset seismic magnitude from the historical seismic waveform data; and training a neural network by applying the seismic precursor data set, the random event data set and the noise data set to obtain a seismic prediction model. The present disclosure improves the identification accuracy of seismic precursor anomalies.

The invention discloses a compensation type connector for a mud continuous wave pulse generator, and belongs to the technical field of oil drilling equipment, in the installation process, a coaxial connector is jacked into a connector seat through an opening in the lower end of the connector seat, the coaxial connector enters a bayonet of a sliding rod, and at the moment, the coaxial connector is pushed into the connector seat through the opening in the lower end of the connector seat; the radial compensation cylinder is passively arranged outside the coaxial connector in a sleeving mode and gradually moves upwards into the clamping opening along with deepening of the coaxial connector, finally, the radial compensation cylinder is completely and tightly arranged on the peripheral side of the coaxial connector in a sleeving mode after being extruded and deformed by the clamping opening, and comprehensive radial compensation can be provided for the coaxial connector; therefore, the coaxial connector is not easy to form a gap or deviate with the connector seat and the sliding rod in the installation and use processes, and the stability and reliability of the mud continuous wave pulse generator during and after installation are ensured.

The utility model discloses a rotary valve flow self-control type continuous wave mud pulse generator which comprises a pulser pup joint, a turbine generator, a driving pup joint and an exploring tube pup joint. The pulser short section comprises an outer pipe shell, a motor shell, a motor, a motor speed reducer, a ball screw, a rotary encoder, a torque sensor and a rotary valve assembly composed of a stator and a rotor. The driving short-circuit energy-saving device realizes the adjustment of a gap of the rotary valve assembly and the generation of a pulse signal through the operation control of a motor; the exploring tube short section is used for measuring well drilling track parameters in an energy-saving manner and storing data, and sending an operation instruction to the driving short section according to a set program; the turbine generator provides a direct-current power supply for the system. The distance between the rotor and the stator of the rotary valve can be automatically adjusted according to time-varying factors such as pumping pressure, hole depth and flushing fluid density, so that the problem of pulse output waveform distortion caused by complex working conditions under long-time working is reduced, and the identifiability and demodulation performance of waveforms are improved.

The application discloses a kind of based on collaborative index optimization's general sense fusion mixed waveform design method, establishes MIMO-ISAC base station equipped with N t Transmitting antenna and N r Receiving antenna, construct shared signal and performance index model, realize the target while base station serves multiple communication users is perceived;Under the condition of satisfying transmitting power level maximum constraint and waveform constant modulus constraint, the problem model of collaborative optimization parameter estimation performance and communication service quality is established;For the nonlinear characteristics of problem model, the geometric characteristics of non-convex constraint are excavated, the constant modulus constraint is associated with Riemann manifold in nature, so that the constrained non-convex optimization problem is converted into an unconstrained convex optimization problem on manifold;SM-RMTR optimization algorithm is proposed to solve, and the integrated sensing and communication system target parameter estimation performance optimization waveform is obtained based on the solving result.In the case of constant waveform modulus, the application can realize more efficient and more accurate target detection and parameter estimation.

The utility model relates to a continuous wave winding structure, a stator assembly and a motor, the continuous wave winding structure is used for the stator assembly, the number of pole pairs of the stator assembly is p, the stator assembly further comprises an iron core part, 48 conductor grooves are formed in the iron core part at equal intervals in the circumferential direction, each conductor groove is provided with n groove layers in the radial direction, the continuous wave winding structure comprises three phases of winding circuits, the winding circuit of each phase comprises m winding branches connected in parallel, each winding branch comprises two continuous winding wires, the two continuous winding wires are welded to be connected in series, one continuous winding wire is subjected to wave winding in a first winding direction, the other continuous winding wire is subjected to wave winding in a second winding direction, and m is an integer greater than or equal to 2; the first winding direction is opposite to the second winding direction. According to the winding structure, the problem that too many welding spots are caused when the winding structure is formed by welding and winding a plurality of hairpin coils can be avoided, so that the structural stability of the winding structure is improved.

The utility model discloses a magnetic circuit structure and a 2450MHz / 15kW continuous wave magnetron, the magnetic circuit structure comprises a first pole shoe and a second pole shoe, and the first pole shoe and the second pole shoe are coaxially opposite up and down and are distributed at intervals; the first pole shoe is provided with a first truncated conical surface and a central hole, and one end of the central hole is provided with a second truncated conical surface; the second pole shoe is provided with a third truncated conical surface and a conical groove, and the diameter of the conical groove is gradually reduced from one end facing the notch of the second pole shoe to one end of the groove bottom; the diameter of a groove opening of the conical groove is 14-47 mm, and the length of a generatrix of the conical groove is 1-22 mm. According to the utility model, the uniformity of a central magnetic field area between the first pole shoe and the second pole shoe is greatly improved, and the power output stability of the magnetron in long-term operation is improved.