764 results about "Current density" patented technology

The invention provides a double-pulse high-frequency switching power supply control method and system for precise electroplating, and relates to the field of electroplating, and the method comprises the steps: collecting area surface data through a three-dimensional scanner, and obtaining a three-dimensional model; extracting a high-curvature area grid according to the three-dimensional model, and calculating to obtain a surface concave-convex degree index; performing current field simulation, and calculating current density vector distribution; when the deviation of the current density vector distribution exceeds a preset deviation threshold value, pulse parameters are optimized through a genetic algorithm; selecting a pulse parameter which is most matched with the surface concave-convex degree index, and carrying out iterative calculation to obtain updated current density vector distribution; based on the difference between the updated current density vector distribution and the initial distribution, predicting a coating thickness value, and determining a preliminary evaluation index; and optimizing pulse parameters to obtain a final control scheme of uniform current distribution. According to the method, pulse parameters can be dynamically optimized according to the geometrical shape of the workpiece, and uniform current distribution and stable plating quality are realized.

The invention relates to the technical field of integrated circuit manufacturing, in particular to a precise electroplating control system and method for an electroplated layer of a double-layer circuit board, and the method comprises the steps: building a multi-physical field coupling simulation model, and simulating the internal current density and ion concentration distribution of a via hole; constructing a mapping relation between the current density and the side wall electroplating thickness based on a simulation result, and predicting the electroplating thickness; through thickness prediction feedback, a time sequence adjustable pulse current control strategy is designed, the pulse amplitude, the duty ratio and the on-off period are dynamically adjusted, and current distribution optimization is guided; the state of the electroplating process is sensed in combination with real-time monitoring and analysis of multi-source parameters of electrode potential, conductivity and fluid velocity; and based on the prediction model and the real-time parameters, adjusting the pulse waveform and the time sequence through closed-loop compensation. According to the method, the uniformity and controllability of the thickness of the electroplated layer on the side wall of the via hole can be remarkably improved.

The invention belongs to the crossing field of artificial intelligence and process control, particularly relates to an intelligent coupling control strategy for chlorine production through seawater electrolysis based on digital twinning, and aims to solve the problems of response lag, weak disturbance suppression and lack of electrode aging early warning in a traditional control method. According to the strategy, a high-fidelity digital twin fusing electrochemistry, fluid and thermodynamics is constructed, characteristics of current, temperature, impedance spectroscopy and the like are collected and fused at high frequency through a multi-source sensor, a state space model driven by a deep recurrent neural network is established, and current efficiency and electrode aging coupling evolution recognition is achieved; when salinization or flow mutation is detected, the twinborn body predicts and dynamically calibrates the current density and the voltage set value in advance, and the safety process window is synchronously scaled. According to the strategy, the chlorine gas yield fluctuation is reduced by 60%, the energy consumption standard deviation is reduced by 45%, the fault early warning is advanced by 2-5 hours, the fault-free operation time of the system is prolonged by 50%, and high-precision, self-adaptive and preventive intelligent control of the electrolysis process is realized.

The invention discloses an electrochemical descaling process ion concentration dynamic balance control method and system, and relates to the field of water treatment of a circulating cooling water system.The method comprises the steps that a multi-parameter sensor is deployed to collect calcium and magnesium ion concentration, pH, conductivity, flow and other multi-dimensional data in real time, and an electrochemical deposition dynamic model is combined; dynamically evaluating the time sequence change trend of the ion concentration; according to the method, an ion concentration dynamic balance control algorithm is constructed, and the current density adjusting quantity is calculated by synthesizing ion concentration deviation and historical integral deviation, so that the target current density of the electrochemical reactor is adaptively adjusted, and the system is always maintained in a target concentration interval under different inlet water quality and load conditions; precise electrolysis control is achieved by periodically adjusting power output, and the descaling efficiency and energy consumption are effectively balanced. Therefore, the self-adaptive adjustment of the electrochemical descaling process is realized, and the stability and the self-adaptability of the descaling process are remarkably improved.

The invention discloses a pulse electroplating detection method, a pulse electroplating device and equipment, and the method comprises the steps: synchronously collecting transient current density data of a three-pole assembly in a pulse switching time window, and calculating a time derivative of a current density ratio to obtain electrochemical stress gradient data; performing space-time correlation analysis on the stress gradient data of the continuous pulse period, and tracking a spatial propagation trajectory of stress anomaly; a key monitoring area is determined according to the propagation trajectory, and ion migration impedance sensitivity distribution is detected through micro-amplitude current modulation; performing multi-dimensional coupling analysis on the stress gradient, the propagation trajectory and the impedance sensitivity data, and identifying time sequence correlation characteristics of stress evolution and ion anomaly; and performing quantitative evaluation and grade division on the electrochemical state of the avoidance area based on the coupling correlation characteristics. According to the scheme, early recognition and predictive evaluation of the ion migration abnormity of the boundary layer of the avoidance area can be realized in the pulse electroplating process, and the electroplating quality control precision and the process stability are remarkably improved.

The invention, which belongs to the technical field of power transmission line deicing, discloses an ice and snow disaster-resistant power transmission line adaptive ice melting device comprising an annular body of which the inner diameter is adaptive to the outer diameter of a power transmission line and which is used for being fixed on the power transmission line in a surrounding manner; the distributed temperature sensor array is uniformly embedded in the inner surface of the annular body and is used for monitoring the surface temperature distribution of the power transmission line in real time; the heating element layer covers the periphery of the annular body, comprises at least two conductive film layers which are insulated from each other, and is used for generating Joule heat in gradient distribution; and the control module is arranged in the waterproof cavity at the side part of the annular body, is electrically connected with the temperature sensor array and the heating element layer, and is used for dynamically adjusting heating parameters according to the temperature data. When temperature values of more than three adjacent sensors are detected to be lower than a freezing point threshold value, a gradient heating program is started, the current density of each conductive film layer is dynamically adjusted according to an icing thickness calculation model, and melting and falling of an ice layer are realized.

The invention relates to the technical field of electroplating, and discloses a ceramic substrate through hole electro-coppering hole filling process control method which comprises the following steps: acquiring structural parameters of a target ceramic substrate through hole, optimizing the proportion of a prefabricated electroplating solution to obtain a proportioned electroplating solution, analyzing a composite electroplating medium of the proportioned electroplating solution, and inquiring a pulse current waveform; the copper deposition morphology is monitored, polarization effect coefficients under different current densities are calculated, duty ratio indexes are optimized to score a shaped current sequence, a multi-order electric field is applied to obtain in-hole flow field data, and the copper deposition uniformity is calculated; and performing multi-cycle electroplating-annealing iteration to obtain a copper hole filling structure, testing residual stress, identifying a lattice distortion section, generating a crystallization-annealing curve, and formulating a process optimization scheme according to regulation and control data. According to the invention, the reliability of the through hole electro-coppering filling process can be improved.

An even harmonic multiplier employing complementary current reuse is disclosed. The even harmonic multiplier employs supply voltage and current density scaling to reduce power consumption. Further, by using complimentary NMOS and PMOS transistors, the even harmonic multiplier achieves high areal efficiency. Current reuse causes a reduction in noise at the first harmonic, as the corresponding first harmonic currents from the NMOS and PMOS transistors are in opposite, i.e., canceling, directions. Complementary current reuse is now feasible, as the performance of PMOS transistors at current process nodes is similar to those of NMOS transistors, with appropriate sizing leading to approximately equivalent transconductances. Multiple even harmonic multiplier configurations are possible, with many using transformer circuits at the input and / or the output. The resultant even harmonic multipliers find ready application in millimeter wave radio frequency receivers. The most common even harmonic multiplier is a frequency doubler, which produces a strong second harmonic signal.

The main object of the present invention is to provide an organic EL display that has excellent light emission characteristics to enable low voltage driving and has light emitting elements with high reliability, thereby serving to realize a desired current density. Provided is a display device including a substrate, a first electrode, a second electrode, a pixel separation layer, and an organic layer containing a light emitting layer, wherein the pixel separation layer contains a colorant (D-DL), has an optical density of 0.5 to 3.0 in the visible light wavelength range per μm of the thickness of the pixel separation layer, and has a plurality of pixel parts in a plan view. The detection intensity of the sulfur ion (S−), the detection intensity of the chlorine ion (Cl−), the detection intensity of the bromine ion (Br−), and the sum of the detection intensity of the chlorine ion (Cl−) and the detection intensity of the bromine ion (Br−), all measured by time-of-flight secondary ion mass spectrometry at a position 3 nm deep in each pixel part from the surface of the first electrode, the surface being in contact with the organic layer containing a light emitting layer, satisfy relationships represented by specific general formulas.

The invention discloses a foamed nickel loaded cobalt sulfide / nickel sulfide NF-CoS / NiS. The foamed nickel loaded cobalt sulfide / nickel sulfide NF-CoS / NiS is prepared by the following steps: firstly, taking foamed nickel NF as a substrate, loading cobalt hydroxide on the surface of the NF through first electrodeposition, then converting the NF into ZIF-67 through an impregnation method, then vulcanizing through thioacetamide and hydrothermal reaction, and finally loading Ni3S2 nanoparticles through second electrodeposition. The nickel foam loaded cobalt sulfide / nickel sulfide NF-CoS / NiS can be obtained. The preparation method comprises the following steps: 1, preparing foamed nickel electro-deposition cobalt hydroxide; 2, preparation of the foamed nickel loaded cobalt hydroxide / ZIF-67; 3, cobalt hydroxide / cobalt sulfide NF-Co / CoS is loaded on the foamed nickel; and 4, preparation of the foamed nickel loaded cobalt sulfide / nickel sulfide NF-CoSX / Ni3S2. When the material is used as a supercapacitor material, charging and discharging are carried out in a voltage window range of 0-0.5 V, and when the current density is 1mA cm <-2 >, the area specific capacitance is 8-9F cm <-2 >; and when the current density is 10mA cm <-2 >, 70-80% of the initial capacity is still kept after 5000 charge-discharge cycles are carried out.

The invention discloses a lightning arrester resistor disc nonlinear conductivity fitting method and system based on a temperature correction coefficient, a medium and equipment, and the method comprises the steps: calculating a current-voltage relation of a lightning arrester according to the volt-ampere characteristic of the lightning arrester and the actual size and material parameters of each component in the lightning arrester, and converting the current-voltage relation into a current density-electric field intensity relation; processing the volt-ampere characteristic interpolation curve in a segmented manner by adopting a logarithm domain processing method and fitting the volt-ampere characteristic interpolation curve; calculating a nonlinear conductivity temperature correction coefficient according to the direct-current reference voltage of the resistor disc of the lightning arrester at different temperatures; calibrating the reference point of the temperature correction coefficient to obtain an equivalent nonlinear conductivity curved surface based on the temperature correction coefficient; performing goodness-of-fit calculation on the obtained equivalent nonlinear conductivity curved surface, and if the goodness-of-fit is relatively high, outputting the equivalent nonlinear conductivity; and if the goodness of fit is relatively low, performing segmentation fitting on the volt-ampere characteristic curve again until the goodness of fit of the equivalent nonlinear conductivity curved surface is relatively high.

The invention relates to the technical field of electrochemical water treatment, and discloses a high-salt waste liquid electric flocculation hardness removal and electrodialysis resourceful treatment method and a high-salt waste liquid electric flocculation hardness removal and electrodialysis resourceful treatment system. The method comprises the following steps: collecting water quality parameters of the high-salt waste liquid and initial electrochemical impedance spectroscopy parameters of a polar plate; calculating the initial current density according to the hardness and the conductivity, carrying out electric flocculation treatment, monitoring impedance spectrum change in real time, identifying the scaling type, and predicting the residual operation time of the polar plate; the current density is optimized according to the prediction time, and the residual hardness is calculated; and adjusting electrodialysis parameters by taking the residual hardness as a feedforward signal for concentration, and performing bipolar membrane electrodialysis on the concentrated solution to obtain acid-alkali liquor. The problems that in the electrochemical treatment process of the high-salt waste liquid, the state of a polar plate cannot be monitored in real time, consequently, operation parameters are adjusted blindly, and energy consumption is high and the recycling efficiency is low due to the fact that parameters of a pretreatment unit and parameters of a pretreatment unit are not linked are solved.

The invention relates to a nickel-molybdenum anode electrode based on a crack induced self-passivation mechanism and a preparation method of the nickel-molybdenum anode electrode. The method comprises the following steps that 1, a substrate is soaked in a solution A for 1-25 min and then taken out; 2, immersing the substrate treated in the step 1 into a solution B for 10 minutes to obtain a precursor; and 3, putting the precursor into a Joule ultrafast heating device, heating the precursor to 380-450 DEG C at a heating rate greater than or equal to 100 DEG C / min in an air or inert atmosphere, carrying out heat preservation for a certain time, and cooling to obtain the nickel-molybdenum anode electrode. According to the method, the foam nickel three-dimensional framework is free of structural damage through short-time chemical soaking, the original high porosity and interconnection network of the foam nickel three-dimensional framework are perfectly reserved, and the loss rate of the specific surface area is reduced. According to the prepared nickel-molybdenum anode electrode, by means of the self-passivation effect of the crack edge and the component storage function of the thick layer, the Mo dissolution rate is reduced by one order of magnitude, and thousand-hour-level stable operation under the low current density can be achieved.

The invention discloses a bearing electrocorrosion prediction method, device and equipment and a storage medium, and relates to the technical field of electromechanical system design, and the bearing electrocorrosion prediction method comprises the steps: obtaining motor information and bearing information; obtaining a shaft voltage based on motor information and the bearing information; determining a shaft current density based on the bearing information and the shaft voltage; and completing bearing electrocorrosion prediction based on the shaft voltage and the shaft current density. The shaft voltage and the shaft current density generated in the operation process of the motor are calculated through the analytical method, the risk of electrocorrosion of the bearing can be predicted, design parameters of the motor and the bearing can be optimized, it is ensured that the motor cannot be damaged due to electrocorrosion in the operation process, the reliability of the motor is improved, and the service life of the motor is prolonged. The electric corrosion risk can be evaluated in the design stage, the test frequency is reduced, the development period is shortened, the development cost is reduced, it is ensured that the motor is still safe and reliable under the operation conditions of high voltage, high integration and the like, and wide application prospects are achieved.

The invention specifically discloses an all-vanadium redox flow battery multi-target operation optimization control method based on a particle swarm algorithm, and relates to the technical field of all-vanadium redox flow battery energy storage system control. The method comprises the following steps: firstly, collecting and preprocessing real-time operation data of a VRB system; constructing a multi-objective optimization function including charging time, input / output energy and pump energy consumption in a charging and discharging mode; taking the charge-discharge current density and the electrolyte flow as decision variables, taking the temperature, the voltage and the SOC value as constraint conditions, and carrying out optimization solving through a particle swarm optimization algorithm to obtain optimal parameters; and finally, realizing full-process automatic closed-loop control by combining data acquisition, function calculation, parameter adjustment and simulation feedback. According to the method, through multi-target dynamic optimization, decision variable and constraint condition and closed-loop adaptive control, collaborative optimization of shortening the charging time of the all-vanadium redox flow battery, improving the system efficiency and reducing the pump energy consumption is realized, and the operation safety, stability and complex scene adaptability of the system are enhanced.

The invention discloses a GIL electromagnetic property detection method and system based on field circuit-mechanical coupling, and the method comprises the steps: building an electromagnetic field-circuit-mechanical coupling mathematical model based on a circuit mathematical model through employing a stiffness matrix of a magnetic vector position, a stiffness matrix of a conductor eddy current, and a load matrix of a conductor conduction current; engineering sections are divided, a finite element two-dimensional simulation model is built, an equivalent external circuit is built, coupling connection is conducted through an external circuit port voltage matrix, and an electromagnetic property detection model of the GIL is obtained; performing iterative solution to obtain transient electromagnetic response of each engineering section, wherein the transient electromagnetic response comprises magnetic flux density, current density and node transient electromagnetic force; detecting whether electromagnetic response abnormity exists in the actual operation process of the GIL or not; and simulating the electromagnetic stress of the GIL component in the abnormal engineering section in the three-dimensional structure field by adopting harmonic response analysis, and checking the electromagnetic and mechanical characteristics of the GIL. According to the method, the electromagnetic characteristics of the GIL can be simulated more accurately, the applicability is wide, the operation speed is high, and guarantee is provided for GIL short-circuit fault monitoring and safe and stable operation.

The invention discloses a device and a method for a circulating cooling water system, an electrophoresis device comprises an electrophoresis tank, a reaction tank and a sedimentation tank which are communicated in sequence, a cathode material is arranged in the electrophoresis tank, an electrophoresis anode tube group is inserted on the cathode material, the electrophoresis anode tube group is composed of a plurality of electrophoresis anode tubes which are arranged in parallel, and the electrophoresis anode tubes are arranged in the sedimentation tank. The electrophoresis anode tube is provided with an anode element, water inlet pipes, an anode tab and a water outlet pipe, the anode element is coated with an electrophoresis film, the top of the anode element is provided with a connecting pipe fitting, the water inlet pipes, the anode tab and the water outlet pipe penetrate through the connecting pipe fitting, and each water inlet pipe is communicated with a bypass water outlet of the circulating cooling water system; each water outlet pipe is communicated with a first water return port of the circulating cooling water system, a water inlet of the electrophoresis tank is communicated with the bypass water outlet, and a water outlet of the sedimentation tank is communicated with a second water return port. The electrophoresis method is implemented by adopting the electrophoresis device. According to the electrophoresis device and the electrophoresis method, the current density and the current efficiency can be improved, and descaling of medium and large circulating water systems is met.

The invention discloses a real-time dynamic monitoring method for a new energy carbon-based material purification process, and relates to the field of material processing monitoring, and the real-time dynamic monitoring method comprises the following steps: collecting pulse voltage signals, stripping current density and electrolyte conductivity data in a graphene powder purification process, and monitoring the change of functional groups on the surface of graphene on line through an infrared spectrometer; obtaining characteristic absorption peak intensity data; according to the method, multi-source data in the purification process is subjected to collaborative analysis and intelligent regulation and control, an electrochemical parameter and material structure evolution correlation model is established, the process stability is improved through parameter self-adaptive adjustment, a closed loop integrating data acquisition, feature analysis and dynamic control is constructed, and the purification efficiency and purity of the graphene powder are effectively improved.

The invention relates to the technical field of reinforcement learning, and further relates to a micro-nano structure optimization design method based on deep reinforcement learning. The method comprises the following steps: step 1, obtaining electron density distribution of a micro-nano structure; calculating the quantum tunneling current density according to the barrier height and the barrier width of the micro-nano structure; 2, mapping the quantum wave state function, the quantum stress field and the quantum tunneling current density to a state space of reinforcement learning to obtain a state vector of reinforcement learning; generating an optimization action based on the state vector; parameters of the micro-nano structure are updated according to the optimization action; calculating the structural performance of the micro-nano structure after the parameters of the micro-nano structure are updated; and 3, based on the change rate of the structural performance, establishing a convergence criterion based on Lyapunov stability, judging whether convergence occurs, if yes, terminating and finishing the optimization design, and if not, returning to the step 2. According to the method, the optimization precision and efficiency are remarkably improved, and meanwhile, the dynamic adjustment and global search capabilities are achieved.

The invention discloses a proton exchange membrane electrolyzer flow field plate device, which belongs to the technical field of proton exchange membrane electrolyzed water, and comprises an anode flow field plate and a cathode flow field plate, the anode flow field plate is the same as the cathode flow field plate, one side plate surface of the anode flow field plate is provided with a plurality of parallel linear flow channels, and the other side plate surface of the anode flow field plate is provided with a plurality of parallel linear flow channels. Through holes perpendicular to the plate surface of the anode flow field plate are formed in the two ends of each linear flow channel; every two adjacent linear runners are separated by a ridge, and the top of the cross section of each ridge is in an arch shape. According to the invention, the uniformity of current density and the utilization of a catalyst are improved, and the linear flow channel is simple in structure and easy to process. The design of the through holes at the two ends improves gas utilization rate and flow velocity, and water generated by reaction is easy to discharge. The defects that the snake-shaped flow channel is high in airflow speed, long in path, large in pressure loss and easy to cause that the electrolytic cell cannot work are overcome.

The invention relates to the technical field of TGV packaging, in particular to an electroplating system for a TGV and panel-level packaging process. Comprising a tank body and environment maintenance module, a soluble anode and current redistribution module, a cathode clamp and substrate posture regulation and control module, a micro-area jet flow coupling array module, a pulsed electric field and impedance compensation module and an electroplating liquid peripheral circulation and online regeneration module, the thickness uniformity of a plating layer on a panel-level large-size substrate is remarkably improved through real-time closed-loop coupling of micro-area jet flow and current density and accurate correction of an adjustable shielding grid on edge current, the thickness uniformity of the plating layer on the panel-level large-size substrate is improved, and the thickness uniformity of the plating layer on the panel-level large-size substrate is improved. According to the method, the through hole filling void rate is reduced to an extremely low level, and bubble desorption, crystal nucleus homogenization and updating of an interface solution are effectively promoted by utilizing micro-vibration, dynamic variable immersion and periodic shaking functions of the cathode clamp, so that thickening of a diffusion layer is inhibited, and the defects of through hole filling void and the like are reduced.

The invention relates to the technical field of self-baking electrodes, in particular to an alternating-current variable-frequency self-baking electrode baking state prediction method for an iron alloy submerged arc furnace, which comprises the following steps: acquiring input parameters of a self-baking electrode, and simplifying an electromagnetic field and a heat transfer process related to the self-baking electrode into a two-dimensional axial symmetry state; constructing an electromagnetic field mathematical model, and obtaining expressions of the magnetic field intensity and the current density of the self-baking electrode; constructing a temperature field mathematical model of the self-baking electrode of the submerged arc furnace and an expression of electrode pressure release time; a finite volume method is utilized to discretize an electromagnetic field mathematical model and a temperature field mathematical model, and on the basis of input parameters and electromagnetic thermal boundary conditions, an implicit solution method which is good in convergence and stability and can achieve a large grid size is adopted to solve the magnetic field intensity, the current density, the temperature distribution and the electrode pressure release time of the self-baking electrode. The method can accurately and quickly predict the electrode pressure release time, and effectively reduces the roasting control cost of the self-roasting electrode of the submerged arc furnace.

The invention relates to the technical field of measurement data processing, in particular to an electric flocculation water treatment equipment detection method and system, and the method comprises the steps: carrying out the global loss detection of each flocculation tube according to a current treatment task, and obtaining the current impedance value of each flocculation tube electrode; setting an electrode passivation upper limit based on an electrode material of the flocculation tube, and when the current impedance value exceeds the upper limit, recording the duration of exceeding the standard; carrying out loss division on the flocculation tube according to the continuous standard exceeding duration; based on a grading result, establishing a mapping rule of loss grades and operation parameters, and generating a current density suggestion value data table and a water flow speed suggestion value data table corresponding to the loss grades; and outputting an equipment state detection report containing the current density suggestion value data table and the water flow speed suggestion value data table. By means of the method, the problems of how to achieve quantitative evaluation and visual expression of the electrode loss state of the electric flocculation equipment and process instability caused by electrode passivation in the cooperative unbalance process of multiple flocculation tube clusters are effectively solved.

The invention provides a lightning protection device current leakage detection method and system, and the method comprises the steps: firstly determining equivalent uniform field response signals corresponding to a rotating electromagnetic field at different rotating moments, and dividing the surface of a lightning protection device into a plurality of current detection blocks; the field intensity coupling relation between the surface of the lightning protection device and the detection probe in the detection probe array is determined according to the equivalent uniform field response signal corresponding to the rotation moment; determining a current density inversion field of the surface of the lightning protection device at the rotation moment by combining the frequency domain characteristics of the equivalent uniform field response signal corresponding to the rotation moment through a field intensity coupling relationship; and generating a current density topological graph of the leakage current of the lightning protection device based on all the density inversion fields, and positioning the leakage current position of the lightning protection device according to a current density abnormal region in the current density topological graph. By adopting the scheme of the invention, the influence of the complex geometric structure of the lightning protection device on the space positioning of the surface leakage current can be reduced.

The invention relates to the technical field of electroplating process control, and discloses a vertical electroplating feeding control method and system.The method comprises the steps that anode current distribution and electrolyte parameters are monitored in real time, and the feeding rate matching degree is judged; the plating thickness uniformity risk level is evaluated based on a fuzzy control model, and the cumulative effect intensity of temperature fluctuation on anode passivation is quantified through multivariable regression analysis and a dynamic feedback mechanism; judging whether to trigger multi-stage feeding strategy recombination according to the risk level and the cumulative effect intensity; the current density and the electrolyte flow velocity are decoupled, a material consumption compensation coefficient is calculated, an adjustment instruction is generated, and iterative optimization can be carried out according to the execution effect. The system comprises a state monitoring module, a risk assessment module, an effect analysis module, a strategy decision module, a parameter decoupling module and a compensation execution module. According to the invention, the feeding control precision and the process stability are improved, and the method is suitable for precise control of the vertical electroplating process.

The invention discloses an electroplating method of a circuit board positive piece process based on vertical copper deposition, which comprises the following steps: cutting and baking a board at the temperature of 165 + / -5 DEG C for 3-5 hours; drilling and polish-brushing are conducted, and the polish-brushing linear speed is 4.0 m / min; the backlight grade of the circuit board after copper deposition is greater than or equal to 9 grade; performing line pretreatment, wherein the line speed is 4.5 m / min; pressing a film; exposure is conducted, the exposure energy is 3400-3600 MJ, the exposure time is 3-4 s, and standing is conducted for 30 min or above after exposure; developing, wherein the temperature of developing tank liquid is 28-32 DEG C, and the production line speed is 5-5.5 m / min; pattern electroplating is conducted, the current density is 13 ASF, the electroplating time is 40-50 min, hole copper is larger than or equal to 20 microns, and surface copper is larger than or equal to 33 microns; etching is carried out, the film stripping line speed is 4.7 m / min, and the etching line speed is 8.0 m / min; and AOI. According to the electroplating method of the circuit board positive film process based on the vertical copper deposition, the vertical copper deposition process is adopted, and the production efficiency and the product yield are improved.

The invention belongs to the technical field of PCB detection, and particularly discloses a PCB copper thickness and line width uniformity detection method and system, and the method comprises the steps: dividing a PCB surface into a plurality of detection regions, carrying out the detection of the copper thickness uniformity and the line width uniformity in each detection region, constructing a uniformity evaluation mechanism of dual dimensions of space correlation and time continuity, and carrying out the detection of the copper thickness uniformity and the line width uniformity. Dynamic uniformity judgment of each detection area in the electroplating process is realized, early abnormity can be effectively identified, and meanwhile, after copper thickness and line width uniformity judgment is completed and an abnormal detection area is identified, current density of the abnormal area is dynamically associated with copper thickness fluctuation characteristics; and lagging correlation analysis is carried out on the plating solution flow rate and the line width fluctuation characteristics, so that main influence factors causing nonuniformity are determined, closed-loop analysis from anomaly detection to root cause tracing is realized, and clear directional guidance is provided for process parameter tuning.

The invention relates to a coronal bionic adhesion array electrodeposition method. Real-time current density, temperature and fluid flow rate sampling data in the electrodeposition process are collected in different regions of each key region of a coronal tail end bionic adhesion array electroforming core mold structure; a multi-field space coupling index is utilized to output parameter sets of local current, pulse waveform, micro-area stirring and the like with spatial resolution and dynamic response in real time, and closed-loop fine management of multi-channel power supply and micro-area stirring linkage control is realized.

The invention discloses a micro-grid hydrogen power supply power accurate adjustment and overshoot suppression method, which comprises the following steps: acquiring sound waves generated in an electrochemical process in a proton exchange membrane in a hydrogen power supply to obtain an acoustic response signal set; based on the acoustic response signal set, reconstructing the current density in the proton exchange membrane to obtain a spatial distribution diagram with high temporal-spatial resolution; generating a directional acoustic compensation signal according to the non-uniformity represented by the spatial distribution diagram, and applying the directional acoustic compensation signal to a target area of the proton exchange membrane; and synthesizing the data, and generating a final control instruction for adjusting the hydrogen power supply through a multi-time scale coordination control architecture. According to the invention, real-time perspective and targeted physical intervention of the internal state of the fuel cell are realized through a non-intrusive acoustic means, and the dynamic response speed, the power regulation precision and the operation stability of the hydrogen power supply are remarkably improved.

The invention provides a tumor electric field treatment system and an electrode patch, an electrode array comprises a plurality of electrode units arranged in multiple rows and multiple columns and a plurality of connecting parts connecting two adjacent electrode units, and each electrode unit comprises a main body part, a conducting strip and a dielectric layer covering the conducting strip. Two adjacent electrode units in the same row and a connecting part for connecting the two electrode units form an electrode unit group, and the dielectric layer uniformly covers the connecting part in the electrode unit group so as to be continuously laid between the two corresponding electrode units; the dielectric layers between different electrode unit groups are arranged in a disconnected mode, the dielectric layers of the electrode unit groups located at different positions of the electrode array are different in thickness, the dielectric layers of the electrode unit groups located at the corners of the periphery of the electrode array are the largest in thickness, and the dielectric layers of the electrode unit groups located at the center of the electrode array are the smallest in thickness. According to the tumor electric field treatment system and the electrode patch, the current density of each electrode unit tends to be consistent, and the influence of the fringe effect is relieved.