918 results about "Pulse power supply" patented technology

The invention discloses an echo signal reconstruction method and system for cable fault positioning, and relates to the technical field of fault positioning. The echo signal reconstruction method for cable fault positioning comprises the following steps: acquiring a measured pulse signal; fitting the pulse signal by using a preset algorithm to obtain a pulse power supply output signal u0 (t), a fault cable echo signal ub (t) and a fault-free cable echo signal u1 (t) with the same path; and Fourier transform is carried out on three time domain signals of the pulse power supply output signal u0 (t), the fault cable echo signal ub (t) and the fault-free cable echo signal u1 (t) with the same path. According to the invention, the problems that the transmission of pulse signals and the quality of echo signals are influenced and the attenuation of ns-level narrow-pulse high-frequency signals in a multi-cable binding structure is serious due to mutual inductance among cables caused by the structure that a plurality of cables of a wiring harness cable of a rail train are generally bound together are solved.

An enhanced lighting control system is provided that utilizes updated communications technology to provide a cost and resource efficient lighting control system that allows for a retrofit installation into existing lighting systems. The lighting control system utilizes single pair ethernet connection protocols, as well as a pulsed power source, to enable the efficiencies.

The invention discloses a multi-discharge efficient precision machining device and method for a milling cutter. The multi-discharge efficient precision machining device comprises a high-precision machining tool, an electric spark machining pulse power supply, a discharge monitoring device and a detection device. The high-precision machining machine tool comprises an electric spark machining machine tool, a spindle, a grinding wheel, a workbench and a machine tool body. The main shaft supports accurate movement in three directions; stable and controllable pulse current and voltage are output through the electric spark machining pulse power supply; a voltage probe and a current probe are arranged on the discharge monitoring device, and discharge voltage and current data are collected in real time through the voltage probe and the current probe; the detection device comprises a non-contact optical measuring instrument, the abrasion of the grinding wheel is monitored through the non-contact optical measuring instrument, meanwhile, the machining allowance of the milling cutter blank placed on the workbench and the size precision after finish machining are measured, and the surface quality of the milling cutter is detected; the machining precision and efficiency of the milling cutter are improved, and efficient precision machining of the milling cutter is achieved.

The utility model discloses an intense pulsed light painless hair removal instrument, which comprises a casing, a PCB (printed circuit board) and a pulse power supply unit are arranged in the casing, a light emitting unit is arranged at the front end of the casing, the PCB comprises a controller, an amplifier U5, a power tube Q7 and a transformer T1, the output end voltage of the pulse power supply unit is loaded to the input end of the transformer T1, and the output end voltage of the power tube Q7 is loaded to the output end of the transformer T1. The output end of the transformer T1 is connected to the light emitting unit, the drain electrode of the power tube Q7 is connected to the cathode of the diode D13, the anode of the diode D13 is connected to a circuit between the output end of the pulse power supply unit and the input end of the transformer T1, the source electrode of the power tube Q7 is grounded, and the source electrode of the power tube Q7 is grounded. The grid electrode of the power tube Q7 is connected to the output end of the amplifier U5 through a resistor R61, and a control signal output by the controller is transmitted to the input end of the amplifier U5. According to the utility model, one-time intense pulse light energy can be decomposed into multiple low-energy rapid flashes, so that painless hair removal is realized.

Some implementations include a system comprising at least one coiled tubing extending from a surface of a wellbore to a bottomhole assembly (BHA); a power cable to be housed either inside or outside the at least one coiled tubing and to electrically couple a power supply at the surface of the wellbore with the BHA. The BHA comprises at least one capacitor to store electrical power received from the power supply via the power cable housed in the at least one coiled tubing; and at least one electrode electrically coupled to the at least one capacitor to receive the stored electrical power from the at least one capacitor and to periodically emit pulsed power discharges into a subsurface formation to drill the wellbore based on the stored electrical power received from the at least one capacitor.

The invention discloses a data processing method and system for a precise automatic multi-axis numerical control electric spark forming machine, and the method comprises the steps: mapping preprocessed data into a digital twin model for fusion analysis, and extracting fusion features including instantaneous energy density, an effective machining angle, a thermal error compensation amount and a chip removal efficiency evaluation value; based on the fused feature data, performing real-time state evaluation and future discharge trend prediction by using a LightGBM neural network model, and outputting a processing prediction result; and a multi-target optimization function is established, an improved NSGA-II algorithm is utilized to carry out rapid optimization search by taking the current processing parameters as an initial population, a multi-axis cooperative motion instruction is generated, and the multi-axis cooperative motion instruction is transmitted to a multi-axis motion control module and a pulse power supply module to be executed. And the processing stability and reliability are improved.

The invention provides atomic cluster powder, a manufacturing method thereof and a high-temperature alloy crack defect repairing method, high-frequency pulse discharge impact is continuously performed on a target material through a high-frequency pulse power supply, atomic-scale cluster powder is generated, and the atomic cluster powder is obtained. The repairing method comprises the following steps: cleaning and drying a high-temperature alloy material component with a crack defect, and putting the high-temperature alloy material component in a glove box; the atomic cluster powder is piled above the crack defects of the high-temperature alloy material component, and vibration treatment is carried out, so that the atomic cluster powder fully permeates into the crack defects of the high-temperature alloy material component; and the high-temperature alloy material component is put into a heat treatment furnace, the atomic cluster powder is melted, and metallurgical repair of the crack defect is achieved. According to the method, high-temperature alloy crack defect repair and the size of a connecting material are reduced to the atomic scale, same-material repair of crack defects of a high-temperature alloy material component can be achieved at the low temperature, and the method has the advantages that the process is simple, energy consumption is low, and the high-performance high-temperature alloy material is high in applicability.

The invention discloses a metal-doped molybdenum disulfide composite super-smooth coating and a preparation method thereof, and belongs to the technical field of composite super-smooth coatings. The invention discloses a preparation method which comprises the following steps: sputtering metal palladium on a substrate by adopting a direct-current power supply to obtain a metal transition layer, depositing a molybdenum disulfide target on the metal transition layer by adopting a pulsed power supply, and preparing a metal-doped molybdenum disulfide composite super-smooth coating by adopting a double-target co-sputtering mode. The metal nanoparticles and the vertically oriented MoS2 sheet layer in the film are co-grown and have strong interaction to form the T-shaped array type Ag-MoS2 low dangling bond film, dangling bonds can be encapsulated to the maximum extent, the internal order degree of the film is improved, and the number of dangling bonds is reduced; meanwhile, the density and the oxidation resistance are ensured.

The invention belongs to the technical field of machine manufacturing, and particularly relates to a metal part discharge machining precision control method and system.The method comprises the steps that discharge gap multi-dimensional physical parameters are sensed in real time in a multi-modal mode, high-dimensional feature extraction and data fusion are carried out, an intelligent discharge state prediction model is constructed, and on the basis of a prediction result, a metal part discharge machining precision control system is obtained. And processing parameters such as a pulse power supply, servo feeding and dielectric liquid are adjusted in an ultra-fast and self-adaptive mode, and iterative optimization of the processing process is achieved. By the adoption of the technical scheme, the machining precision, the surface quality and the consistency of the metal part can be remarkably improved, electrode loss is reduced, and the machining efficiency is improved.

The invention relates to the field of sintering machine head electrostatic dust collection, and provides a sintering machine head electrostatic dust collection system which comprises an airflow homogenization unit, an electric field dust collection unit, a high-frequency pulse power supply unit, an intelligent control unit and a dust concentration detector. The airflow homogenization unit is arranged in front of the electric field dust removal unit; the high-frequency pulse power supply unit is in signal connection with the electric field dedusting unit; the intelligent control unit is in signal connection with the electric field dedusting unit and used for controlling the voltage of the electric field dedusting unit; the dust concentration detector is arranged at the outlet position of the electric field dust removal unit, and is used for detecting the outlet dust concentration of the flue gas at the outlet position of the electric field dust removal unit and sending the outlet dust concentration to the intelligent control unit; the intelligent control unit is in signal connection with the high-frequency pulse power supply unit, and when the outlet dust concentration is larger than 20 mg / Nm, the pulse mode of the high-frequency pulse unit is activated, the invention further provides an electrostatic dust collection method for the sintering machine head, and the effect of improving the electrostatic dust collection efficiency and effect is achieved.

The invention discloses a pulse electrochemical reactor control method for treating complex water in an oil and gas field, which is applied to a control system comprising a pulse power supply, a pulse electrochemical reactor and a controller, an electrode system is arranged in the pulse electrochemical reactor, and during the operation period of the pulse electrochemical reactor, the pulse electrochemical reactor is connected with the controller. Periodically interrupting the treatment pulse applied to the electrode system, controlling the pulse power supply to apply a preset alternating current disturbance signal to the electrode system, and collecting an electrochemical response signal fed back by the electrode system; based on the parameters of the alternating current disturbance signal and the parameters of the electrochemical response signal. By monitoring the electrochemical state of an electrode interface in real time and dynamically adjusting pulse parameters and adaptive water quality changes, efficient and stable operation of the reactor is realized; the technical problems of dynamic response lag, insufficient control precision and shortened equipment service life caused by static parameter setting in a pulse electrochemical reactor control method in the prior art are effectively solved.

The invention provides a pulse power supply method for an electron gun, and the method comprises the steps: collecting at least one working parameter of a target electron gun in real time, and enabling the at least one working parameter to comprise the gun voltage and the gun current of the target electron gun; n pulse signals are transmitted to the target electron gun at intervals to supply power, any two adjacent pulse signals are transmitted at intervals, and N is an integer larger than or equal to 2; wherein at least one of the N pulse signals is obtained by modulation according to the at least one working parameter. The invention further provides a pulse power supply method for the multiple electron guns.

An enhanced lighting control system is provided that utilizes updated communications technology to provide a cost and resource efficient lighting control system that allows for a retrofit installation into existing lighting systems. The lighting control system utilizes single pair ethernet connection protocols, as well as a pulsed power source, to enable the efficiencies.

The invention relates to a pipe fitting and plate forming method adopting a magnetic collector shaped like a Chinese character'tu ', which comprises the following steps of: manufacturing the annular magnetic collector shaped like the Chinese character'tu' with a coil accommodating cavity, and placing a driving coil in the coil accommodating cavity; workpieces to be formed are arranged and fixed on the upper side, the lower side, the inner side and the outer side of the magnetic collector respectively; connecting the driving coil to a pulse power supply through a discharge switch; and the discharge switch is controlled to supply power to the driving coil, and induced eddy current is generated in the to-be-formed pipe fitting and the to-be-formed plate to enable the pipe fitting and the plate to deform, so that the forming specification is achieved. The invention further discloses a device for simultaneously forming various pipe fittings and plates. According to the invention, simultaneous forming of pipe fitting bulging, pipe fitting compression and plate fitting bulging is realized, the workpiece forming efficiency is multiplied, electromagnetic radiation to the environment in the workpiece electromagnetic forming process is reduced, and the device is more energy-saving and environment-friendly.

The invention relates to a method and a device for macroscopically preparing graphene by utilizing pulse discharge. The device for macroscopically preparing graphene by utilizing pulse discharge comprises an upper discharge device, a clamping device, an upper graphite electrode, a lower discharge capacitor, a lower graphite electrode, a driving motor, a pulse power supply, a control computer and an ultrasonic device. The invention provides the method and the device for preparing the graphene in the macroscopic quantity by utilizing the pulse discharge, which can overcome the defects in the prior art, enrich the product structure of the electrochemical stripping graphene, expand the preparation condition and simultaneously realize the assembly line macroscopic quantity preparation.

The invention relates to the technical field of electric meter wiring, in particular to a gantry type wire cutting machine which comprises a supporting assembly, a wire cutting assembly and a wire cutting assembly. The wire moving assembly comprises wire guide nozzles fixed at one ends of the two support arms, and electrode wires which sequentially penetrate through the upper wire guide nozzle and the lower wire guide nozzle and can be conveyed; the discharge assembly comprises an extension arm capable of vertically translating, a steering engine fixed at one end of the extension arm, a fork frame fixed on a rotating shaft of the steering engine, and a conductive block which slides in the fork frame along the axial direction of the rotating shaft of the steering engine, and the conductive block is connected with the negative electrode of the pulse power supply; and a compression assembly. The height of the conductive block is adjusted according to the thickness of a workpiece, the length of the discharge section of the electrode wire is shortened, position adjustment of the conductive block and control over the length of the discharge section of the electrode wire are combined, energy consumption is effectively reduced, and the probability that the electrode wire is broken during adjustment in the prior art is further avoided.

The invention discloses a pulse modulation plasma jet generation method and application thereof, and particularly relates to the field of microelectronics, and the method comprises the following steps: I, constructing a multidisciplinary association database, modulating a high-voltage pulse power supply, and optimizing pulse waveform parameters at the same time; iI, pulse voltage is applied through a high-voltage electrode to generate plasma jet, a coupling simulation model is established, and the evolution process of the plasma jet is simulated; according to the method, the requirement of manual operation can be reduced, subjective deviation and information loss are avoided, the robustness of resisting environmental interference is improved, and the method can adapt to the high-speed and high-precision process requirement; the testing of invalid parameter combinations can be avoided, the searching capability is improved, the experiment or simulation frequency is reduced, the anti-interference capability of the jet system on working condition fluctuation is improved, and the maintenance frequency is reduced.

The invention discloses a design method of a novel pulse power supply. The method comprises the design and architecture relation of circuits such as a switching power supply module, a numerical control processing unit, a pulse waveform generator, a signal amplification and power amplifier, a negative feedback sampling circuit and an output measurement circuit. The numerical control processing unit carries out digital synthesis according to input pulse parameters to generate pulse waveforms, the pulse waveforms are output after passing through the signal amplifier and the power amplifier, the feedback sampling circuit carries out real-time sampling on voltage and current of the pulse power supply and inputs the voltage and current to the numerical control processing unit, and the numerical control processing unit carries out closed-loop control. And high-precision pulse power supply output is achieved. Different from single-bridge or double-bridge switch chopping of an output part of a traditional pulse power supply, the method has the advantages that pulse signals output by the method are accurate and controllable, positive and negative pulse signals are under closed-loop control of a circuit, zero points of output pulses are accurate and do not deviate, small signals are accurate, pulse edges are neat, expansion is easy, and cost is low.

The invention relates to a multi-level pulse power supply and semiconductor process equipment. The multi-level pulse power supply comprises a high-frequency isolation conversion module and a switch module, wherein the high-frequency isolation conversion module is electrically connected with the switch module; the high-frequency isolation conversion module is used for accessing a direct-current bus voltage and performing voltage conversion processing on the direct-current bus voltage to generate a plurality of pre-processing voltages; and the switch module is used for responding to an externally input control signal and switching the state of the switch module so as to perform voltage amplitude modulation based on the plurality of pre-processing voltages and output a target voltage. The multi-level pulse power supply can output multi-level pulses.

Disclosed is a synchronous and dynamic loading method in electro-magneto-thermo-mechanical multi-field coupling conditions. The method comprises the following steps: applying maximum pulse current to a test object by a pulse power supply to realize loading in extreme electric field and magnetic field conditions; meanwhile, generating a large amount of friction heat by the high-speed rotation of a rotating body and the friction of the test object to realize loading in an extreme-temperature field combined with a large amount of Joule heat and arc heat; synchronously applying pressure to the rotating body by a pressure device to realize loading of extreme force combined with the gravity of the rotating body and the friction force between the rotating body and the test object.

The invention discloses a face type LED car lamp light source time division multiplexing driving circuit, driving system and driving method.The driving circuit comprises a pulse power source generating circuit and an LED driving circuit, the pulse power source generating circuit comprises a plurality of pulse power source signal output ends, and the pulse power source signal output ends are connected with the LED driving circuit; at most one pulse power supply signal output end outputs pulse power supply signals at the same time, and each pulse power supply signal output end is connected with the positive electrodes of the multiple sets of LED lamps in a one-to-one correspondence mode. The negative electrode of each LED lamp in each group of LED lamps is connected with the negative electrode of one LED lamp in each other group of LED lamps in a one-to-one correspondence manner and then is grounded through different LED driving circuits; and the LED driving circuits are used for controlling whether the negative electrodes of the LED lamps connected with the LED driving circuits are grounded or not. According to the surface type LED vehicle lamp light source time division multiplexing driving circuit, driving system and driving method, the use of driving chips can be reduced through time division multiplexing, and the driving circuit, driving system and driving method are energy-saving, efficient, low in cost and high in display contrast ratio.

The invention discloses a high-fidelity power pulse sound source for ship noise simulation and a control method thereof, the high-fidelity power pulse sound source comprises an electromagnetic transducer and a driving circuit thereof, the driving circuit of the electromagnetic transducer comprises an element for actively controlling the charging current of an energy storage capacitor and a bipolar Marx circuit for generating bipolar power pulses, the working modes comprise a bipolar pulse output mode and a power amplifier output mode. The invention also provides a circuit control method required by ship noise simulation. According to the high-fidelity power pulse sound source for ship noise simulation and the control method of the high-fidelity power pulse sound source, accurate injection and extraction of current in an electromagnetic transducer coil are achieved, and then the transducer is accurately controlled to output sound waves; the two working modes of bipolar pulse output and power amplifier output simulate a continuous spectrum and a line spectrum in ship noise respectively, and finally, a neural network used for generating a pulse power supply trigger signal is trained based on a cyclic gating unit, so that high-fidelity ship noise simulation is realized.

The invention discloses a pulse power supply system parameter selection method and system, and belongs to the technical field of pulse power supply systems, and the method comprises the following steps: S1, collecting state historical data of a pulse power supply system; s2, processing the historical state data of the pulse power supply system; s3, training an optimal pulse power supply system parameter selection numerical model; s4, selecting an optimal pulse power supply system parameter according to the energy output requirement of a user on the pulse power supply system; and S5, interface display: displaying the optimal pulse power supply system parameters to a user in a visual form. According to the invention, the problems that the pulse power supply system is poor in use effect and the performance and reliability of the pulse power supply system are reduced because the parameters of the pulse power supply system cannot be flexibly selected according to user requirements in the prior art are solved. The pulse power supply system parameters can be flexibly selected according to user requirements, the use effect of the pulse power supply system is improved, and the performance and reliability of the pulse power supply system are improved.

The invention discloses a method and a system for stably controlling the output amplitude of a pulse power supply under low repetition frequency. The method comprises the following steps of: sampling a pulse voltage waveform output by the pulse power supply, analyzing the pulse voltage waveform, determining a discharge moment, and forbidding an energy storage capacitor of the pulse power supply from being charged at the discharge moment. The output voltage of the pulse power supply is stable by adopting a new control scheme and circuit, the output capacitance does not need to be increased, the space can be effectively utilized, and the power density of the power supply is improved.

The invention provides an under-water discharge machining system and method for a radiation environment. The under-water discharge machining system comprises a pulse power supply control system, an electric spark machining head device and a servo control system. The pulse power supply control system comprises a power supply control box, a rectifier and a power amplifier which are electrically connected in sequence. And the power amplifier is electrically connected with the servo control system and the electric spark machining head device. The electric spark machining head device is provided with a feedback signal wiring connected to the servo control system. The pulse power supply control system is matched with the servo control system to drive the electric discharge machining head device to guarantee the process of the workpiece to be machined, so that the problem that conventional electric discharge machining equipment cannot be used in the high-radiation and boron-containing water environment is solved.

The invention relates to the technical field of semiconductor packaging, in particular to a multi-chip eutectic heating device and a using method, and the multi-chip eutectic heating device comprises a core structure design of multi-component cooperative work: a visible eutectic box, a heating module, a cooling module, a positioning device and other key parts are arranged. Wherein the heating module is combined with the pulse power supply unit to realize accurate temperature control, the cooling module is used for rapidly cooling through a multidirectional blowing hole, and the positioning device ensures stable clamping and accurate adjustment of a workpiece. In addition, the protective atmosphere supply module creates an ideal eutectic environment, the calibration mechanism assists in high-precision positioning, and the air knife ensures clear visual inspection. According to the invention, the purpose of efficient and controllable multi-chip eutectic processing is achieved, the production efficiency and the product quality are remarkably improved, and meanwhile, the process stability and adaptability are optimized.

The invention discloses a brushless air-core pulse generator and supercapacitor hybrid energy storage self-excitation type pulse power supply topological structure and a control method, and relates to the field of pulse power supplies. The problems that in the prior art, a storage battery is high in energy storage density, low in power density, short in large-current cycle life, low in high-voltage charging speed and high in step-up ratio, so that a step-up converter between the storage battery and a super capacitor works in a near-saturation working condition, and the charging speed and the charging linearity are seriously affected are solved. The self-excitation pulse power supply topological structure comprises a prime motor, a brushless air-core pulse generator, a self-excitation charging rectifier bridge, a pulse capacitor bank and a load. The prime motor is coaxially connected with a rotor of the brushless hollow pulse generator; the self-excitation charging rectifier bridge is connected in series with the brushless air-core pulse generator and the pulse capacitor bank; and the brushless air core pulse generator and the pulse capacitor bank discharge to a load together in a parallel connection mode. The method is also suitable for the hybrid energy storage field based on three forms of inertia, magnetic field and electric field.

The invention discloses a silicon carbide MOSFET parallel current sharing system and method for a pulse power supply, and belongs to the technical field of SiC MOSFET parallel current sharing, the system comprises a main power circuit connected with a plurality of SiC MOSFETs in parallel and an active driving circuit, when the SiC MOSFETs are turned on, a source inductor generates an induced voltage in direct proportion to the current rising rate, and when the SiC MOSFETs are turned on, the active driving circuit drives the main power circuit to rotate; current sharing when a plurality of SiC MOSFETs are connected in parallel is realized through an in-phase amplification circuit used for detecting and amplifying an induced voltage, a differential amplification circuit used for detecting and comparing an induced voltage value, and a proportional current source circuit is controlled to extract a SiC MOSFET gate drive current. By adopting the method, the unbalanced current can be suppressed, the balance of the current flowing through each branch of the parallel SiC MOSFETs is ensured, the SiC MOSFET device in the high-voltage pulse power supply is effectively protected, and the working reliability of the circuit is improved.

The invention relates to a degaussing power supply control method, system and equipment based on a flywheel energy storage device, and belongs to the technical field of pulse power supply design. The system comprises a power grid side rectifier, a four-quadrant DC / DC converter, a flywheel side converter, a bidirectional DC / DC converter and a centralized console. The power grid side rectifier is controlled according to a constant power mode; the four-quadrant DC / DC converter is used for controlling the waveform of the current of the degaussing coil and limiting the power of the degaussing coil; the flywheel side converter charges and discharges the flywheel motor according to the power of the degaussing coil; the bidirectional DC / DC converter is used for maintaining the voltage of the DC bus to be constant; the centralized console is responsible for monitoring the states of different converters and issuing a control instruction. The power and voltage output of each converter can be coordinated, the pulse current output requirement of the degaussing coil is met, the safe and stable operation of the power supply system is ensured, and the popularization and application are easy.

The utility model belongs to the technical field of pulse power supplies, and particularly discloses a pulse power supply circuit, which comprises a power supply input module, a PWM (Pulse Width Modulation) signal input module, a feedback control module, a control chip and an output module, the power input module provides working power for the control chip and the whole circuit. The PWM signal input module is used for transmitting an external PWM signal to a signal input pin of the control chip; the feedback control module collects an electric signal in the circuit and transmits a processed feedback signal to the control chip; the control chip drives the output module to output a pulse power supply to provide electric energy for a load based on an input PWM signal and a feedback signal. According to the utility model, the feedback signal acquired by the feedback control module is compared with the reference voltage, the difference value is amplified, the control chip adjusts the duty ratio of the PWM signal according to the amplified error signal, the pulse waveform is effectively optimized, and the output stability and reliability of the pulse power supply are improved.