Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

47 results about "Dynamic impedance" patented technology

Dynamic impedance is the slope of the voltage vs current curve. For example, with a diode, You might have a voltage of 0.6V and a current of 1mA.

Gain scaling method, dynamic impedance testing method, apparatus, and medium

This application relates to the field of radio frequency (RF) power supply technology, and discloses a gain calibration method, a dynamic impedance testing method, equipment, and dielectric. The gain calibration method includes: acquiring multiple RF power measurements, where the RF power measurements are the output power measurements of an RF power supply in an open-loop state under multiple load impedance values; performing two-dimensional interpolation fitting in the complex plane of reflection coefficient based on the load impedance values ​​and the RF power measurements to obtain a continuous power distribution; selecting a minimum RF power value in the complex plane of reflection coefficient based on the continuous power distribution to obtain a target minimum RF power value; and calculating the gain of the RF power supply based on the target minimum RF power value, the load impedance value corresponding to the target minimum RF power value, and a preset characteristic impedance value. The embodiments of this application can improve the accuracy of RF power supply gain calibration and reduce the impact of environmental noise and small impedance fluctuations.
Owner:SHENZHEN CSL VACUUM SCI & TECH CO LTD

Waveguide mode priority control system based on coating technology

PendingCN122370839ADynamic impedanceControl system
The application discloses a waveguide mode priority control system based on a coating technology and relates to the field of waveguide gas lasers.The system comprises a boundary construction unit, a radial discharge unit, a mirror cooling unit and a basic mode optimization unit.The boundary construction unit is sequentially distributed with a central clearance mode surface, a peripheral closed traction ring and an outer return discharge belt from inside to outside on the inner surface of an electrode plate.The radial discharge unit is provided with a radial discharge bridge between the traction ring and the discharge belt, and a gradient conductive layer with continuously decreasing resistivity is laid on the surface of the bridge.The mirror cooling unit is provided with a mirror cooling flow channel and a cooperative heat dissipation structure at the position corresponding to the traction ring and the discharge bridge inside the electrode plate.The basic mode optimization unit is connected with a dynamic impedance matching compensation network.Through deep cooperation of space geometry traction, gradient impedance outer guide and isomorphic thermodynamics locking, the application intercepts and directionally discharges micro-discrete charges, avoids the invasion of charge boundaries into the core clearance area, effectively dissipates the energy of high-order mode flanks, and thus stabilizes the output of high-purity basic mode priority laser beams.
Owner:GUANGZHOU NEW CKLASER CO LTD

Battery pack fault diagnosis method and system based on physical enhancement and machine learning

The application relates to the technical field of battery management systems, and discloses a battery pack fault diagnosis method and system based on physical enhancement and machine learning. The method is based on an interpolation parameter matrix to construct an improved extended Kalman filter model, to obtain state estimation, reference voltage and residual information of a battery monomer; a physical enhancement self-encoder is constructed, current, state estimation, temperature or equivalent environmental variables and monomer residuals are taken as context inputs, combined with consistency reference of other monomers, to reconstruct a health reference voltage response of a target monomer; dynamic impedance response, event locking features, local consistency features, sensor bias / noise features and aging persistence features are extracted to form a mechanism feature space facing connection faults, sensor faults and battery aging; a cascade random forest model is adopted to realize fault screening and fault type identification, and online diagnosis results are post-processed through current gating, sliding window lag and physical priority correction strategies.
Owner:HUAQIAO UNIVERSITY

High frequency probe card signal optimization method based on dynamic impedance matching and related apparatus

The present application relates to the technical field of probe card signal optimization, in particular to a high-frequency probe card signal optimization method based on dynamic impedance matching and related devices. The method steps include: obtaining real-time high-frequency signal reflection parameters of the probe card test channel to provide real-time detection basis for dynamic impedance matching. The present application relies on the real-time acquisition of the high-frequency signal reflection parameters of the probe card test channel to complete the quantitative tracing of the dynamic impedance deviation, and through the closed-loop feedback adjustment, the integrated adjustable impedance network of the driving probe is used to complete the real-time correction of the output impedance. From the root level of transmission line impedance matching, the present application breaks through the inherent limitation of the traditional static matching scheme which can only adapt to the nominal working condition, and can effectively offset the dynamic impedance mismatch introduced by the contact state difference, the probe structure micro-deformation, the device individual parasitic parameter dispersion and the nonlinear evolution of the parasitic parameters under high frequency in the actual test process, and solves the reflection residual problem that cannot be eliminated by static matching.
Owner:SHENZHEN KEDAXIN TECH CO LTD

A 10-gigabit ethernet port protection circuit

ActiveCN224401557USolve core technical problemsIntegrity guaranteedLine-faulsts/interference reductionData switching current supplyCapacitanceInterference (communication)
The utility model relates to communication technical field, concretely is a kind of gigabit ethernet port protection circuit.The protection circuit includes: difference signal positive electrode circuit and difference signal negative electrode circuit, for forming signal transmission path;Difference impedance matching circuit is used to suppress signal reflection;Power filter network circuit is used to filter high-frequency noise and suppress common-mode interference.The circuit architecture design of the utility model systematically solves the core technical problem in the high-speed transmission of gigabit ethernet port.In the signal transmission level, two-stage resistance-capacitance isolation and dynamic impedance matching mechanism construct the parameter self-adaptive signal transmission path, through the impedance buffer of series resistance, the direct current isolation of coupling capacitor and the dynamic adjustment of difference pair network, effectively suppress signal reflection and direct current bias interference, ensure the integrity of 10Gbps high-frequency signal in long-distance transmission.
Owner:TAICANG T&W ELECTRONICS CO LTD

Impulse response dynamic impedance measurement and regulation device, method and storage medium

The application discloses a kind of pulse response type dynamic impedance measurement and regulation device, comprising: pulse generation unit, control unit, acquisition module;Control unit sends the control signal including operating parameter to pulse generation unit;Pulse generation unit generates low-voltage pulse, and low-voltage pulse is applied in load both ends;Module synchronous measurement voltage and current in load both ends, and voltage and current are detected, while analog signal is converted into digital signal;Control unit stores and transports the digital signal collected, and obtains impedance value according to voltage and current.This application is measured by applying real-time voltage pulse to ablation tissue, and the real-time impedance change of ablation tissue is calculated according to the voltage and current in the two ends of ablation tissue, so as to realize the real-time evaluation of the ablation effect of target area.The device can be used with high-voltage pulse ablation equipment through interface unit, realize the feedback adjustment of high-voltage pulse parameters, and more optimized ablation effect can be obtained in shorter time.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI

Method and system for storage control of multi-component gas parameters

ActiveCN121432908BDynamic impedanceControl engineering
The application discloses a kind of multi-component gas parameter's storage control method and system, belong to automation control technical field, comprising: collection initial environmental parameter, obtain the stacking form image of storage material, identify stacking characteristic parameter, construct gradient pre-judgment model, to obtain gradient pre-judgment interval, and mark high-risk area;Construct hierarchical node monitoring network, and real-time acquisition each monitoring node's local parameter, combine total environmental mean value and identify abnormal deviation area;Coupling association is constructed, and predictive gradient intervention is carried out, the optimal airflow path is calculated and adjusted gas supply strategy, utilize dynamic impedance adaptation strategy, identify high impedance area, utilize multi-objective optimization, carry out differentiation regulation, to generate targeted regulation strategy;Set update time interval, calculate pre-judgment deviation rate, to carry out deviation correction, ensure that local parameter is stable in safety range, avoid the problem of out of control due to space heterogeneity and dynamic coupling, guarantee the stability of overall storage effect.
Owner:SHANXI AGRI UNIV

A lithium battery over-temperature fault risk assessment method and system based on dynamic impedance spectrum

This invention discloses a method and system for assessing over-temperature fault risk in lithium batteries based on dynamic impedance spectroscopy. The method includes: simultaneously acquiring the dynamic impedance sequence and surface geometric center temperature sequence of the lithium battery under multiple operating conditions; extracting the time lag Δt between the abrupt change in dynamic impedance characteristics and the surface geometric center temperature response, advancing the surface geometric center temperature sequence by Δt time on the time axis to reconstruct the internal core temperature sequence of the lithium battery and use it as a training label; constructing a feature dataset and training an impedance-internal temperature soft measurement model; during online assessment, inputting the battery's dynamic impedance and external operating parameters in real time, and having the model directly output the predicted internal core temperature value at the current moment without delay, and executing graded over-temperature risk control accordingly. This invention achieves accurate soft measurement of internal temperature without the need for implanted internal sensors, completely eliminating the negative impact of surface temperature conduction lag on early warning.
Owner:ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1

An intelligent control box power distribution system supporting automatic reclosing

PendingCN122371023ADistribution power systemTransient recovery voltage
This invention relates to the field of power supply or distribution, specifically to an intelligent control box power distribution system supporting automatic reclosing. At the instant the fault current is interrupted, the transient recovery voltage waveform and the residual current waveform across the circuit breaker contacts are acquired, and the transient recovery voltage rise rate characteristic and dielectric recovery strength change characteristic are extracted. A dynamic impedance recovery model for the downstream load is established, and the expected recovery value of the load impedance at the moment of reclosing is calculated based on the load type and power outage time. Using the above characteristics and the expected recovery value as input, the target phase angle is calculated through a closing phase angle decision function, and the reclosing delay time is dynamically adjusted so that the circuit breaker performs closing when the dielectric recovery strength is greater than the transient recovery voltage and the load impedance is in a stable range. This invention suppresses secondary overcurrent and system oscillations caused by reclosing and reduces the probability of arc reignition at the circuit breaker contacts.
Owner:JILIN TRANSPORTATION INFRASTRUCTURE TECH CO LTD

Electrical system risk early warning method and system

PendingCN122176877AAlarmsReal-time dataDynamic impedance
This application discloses a method and system for early warning of electrical system risks. The method includes: continuously collecting real-time data of monitored parameters in a vehicle's electrical system; performing a two-dimensional parallel judgment on the real-time data, which includes comparing the absolute value of the parameter with an absolute value threshold, and calculating the rate of change of the parameter and comparing it with a rate of change threshold; triggering an early warning signal when either comparison result is true. The system includes a data acquisition unit, a processing unit, and an early warning unit configured to execute the method. By introducing a rate of change judgment dimension, this application can capture early warning signs where the absolute value has not yet exceeded the limit, and confirm the abnormal rate of change through frequency conversion sampling and dynamic impedance analysis, thereby improving the speed of early warning while effectively suppressing false alarms.
Owner:RONGCHENG MOLIN OUTDOOR TECH CO LTD

A method and device for dynamic acoustic impedance matching and coordinated control of magnesium alloy WAAM performance by dual robotic arms

This invention relates to the field of metal additive manufacturing and material processing technology, and discloses a method and apparatus for regulating the performance of magnesium alloy WAAM (wax arc welding) using a dual-robotic arm system with dynamic acoustic impedance matching. The method includes preprocessing and path planning of the original preparation data to obtain first execution data adapted for dual-robotic arm collaborative operation; through the dual-robotic arm collaborative operation architecture, the first robotic arm performs arc additive manufacturing deposition, simultaneously tracking the weld temperature via a temperature sensing unit, and triggering the second robotic arm to perform ultrasonic impact operation on the weld along the path of the first execution data within a preset temperature window, obtaining second operation data; through the sensing unit of the acoustic impedance dynamic matching module, the contact state and actual amplitude data during the ultrasonic impact operation are collected in real time, and after preprocessing the collected data, third monitoring data is obtained; based on a master-slave collaborative PID+MPC composite control architecture, the third monitoring data is processed to generate control signals for dynamic impedance matching and amplitude regulation.
Owner:ZHONGBEI UNIV

A device for measuring dynamic impedance of a barrel-shaped foundation of an offshore wind turbine

PendingCN122358722ADynamic impedanceUniversal joint
This invention discloses a test device for measuring the dynamic impedance of a barrel foundation for offshore wind turbines, belonging to the technical field of test device technology. The device includes a test barrel filled with test sand, and a detachable cover assembly on the top of the barrel; a barrel foundation model embedded in the test sand within the barrel; and a loading test assembly positioned above the cover assembly for applying dynamic loads to the barrel foundation model and collecting response data. The loading test assembly includes at least one set of tilting servo electric cylinders and at least one set of vertical servo electric cylinders, with tilt force sensors and vertical force sensors respectively installed at their output ends. The universal joint of this invention can compensate for the minute displacements generated by the barrel foundation model under dynamic loads, allowing the load to be evenly distributed across the barrel foundation surface, eliminating local stress concentrations, and ensuring precise and stable power transmission.
Owner:NANJING FORESTRY UNIV

Digital battery pack intelligent equalization management system based on dynamic impedance matching

The application belongs to the technical field of digital battery pack, and particularly relates to a digital battery pack intelligent equalization management system based on dynamic impedance matching, which comprises a plurality of battery monomers connected in series or in parallel to form a digital battery pack; wherein the dynamic internal resistance is obtained through online identification by means of a high-frequency excitation signal or a pulse response method; and the impedance matching type active equalization topology network enables the output impedance of the energy transmission path to be equal to the input impedance of the target battery monomer in the equalization process, so as to realize dynamic equalization with high efficiency, low reflection and low thermal loss; under dynamic working conditions such as high-rate charging and discharging and load mutation, the problems of energy reflection, low efficiency and local overheating caused by impedance mismatch in the traditional equalization technology are effectively solved, the equalization efficiency, system safety and service life of the battery pack are significantly improved, and the intelligent energy management with high efficiency, low loss and high reliability is realized.
Owner:东莞日升质新能源科技有限公司

An adaptive control method and system suitable for new energy flexible direct transmission

PendingCN122338891ALoop controlTransformer
This invention discloses an adaptive control method and system suitable for flexible direct transmission of new energy, including acquiring multi-state characteristic quantities of transformer branch access points; adaptively selecting based on multi-state characteristic quantities to determine the operating state of the transformer branch, and selecting a control strategy for grid construction based on the determination result; responding to the AC station control determining that the new energy branch is in an operating state, substituting the operating new energy branch into the calculation of the impedance of the offshore AC system, and dynamically correcting the equivalent time-varying inductance based on the real-time dynamic impedance to obtain the corrected line impedance. This invention provides an adaptive control method suitable for flexible direct transmission of new energy, which can ensure that the offshore converter DC control system of the deep-sea new energy flexible direct transmission system adaptively selects appropriate AC voltage and AC current closed-loop control points and identifies the new energy collection branch to calculate the equivalent time-varying impedance of the AC system, thus ensuring the absorption of new energy and the safe and stable operation of the system.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD

A broadband high-efficiency electromagnetic detection transmitting system and control method

The present application belongs to the technical field of frequency domain electromagnetic detection, and relates to a wideband efficient electromagnetic detection transmitting system and a control method. The control method comprises the following steps: calculating a target depth corresponding frequency range according to a skin depth formula; generating a linear frequency modulation signal and converting it into a Chirp-PWM control signal; driving an H-bridge inverter to output a high-power Chirp-PWM voltage signal; monitoring load impedance and dynamically adjusting IMN duty cycle parameters to adaptively adjust the equivalent impedance of the IMN, thereby realizing real-time impedance matching; and outputting a PWM control signal and transmitting the PWM control signal to the IMN to complete real-time dynamic impedance matching. The control method of the wideband efficient electromagnetic detection transmitting system can significantly improve the detection vertical resolution, accurately adapt to the target depth detection requirements, realize spectrum energy improvement, cover a wide frequency band in a single signal cycle, reduce transmission loss, greatly shorten the detection time, and reduce the transmitter capacity requirements.
Owner:JILIN UNIVERSITY

An embedded intelligent voltage regulating system with dynamic impedance matching and harmonic collaborative suppression

PendingCN122456543ADynamic impedanceControl engineering
The application discloses an embedded intelligent voltage regulating system with dynamic impedance matching and harmonic collaborative suppression, and relates to the technical field of voltage regulating of power distribution networks. The embedded intelligent voltage regulating system comprises an inversion marking module, an impedance and harmonic identification module, a traction matching module, an excitation execution module and a state verification module. The inversion marking module obtains inversion output operation data of a flexible voltage regulator, marks an inversion state position, and outputs inversion end marking data. The impedance and harmonic identification module identifies load impedance variation and characteristic harmonic distribution, and generates impedance harmonic data. The traction matching module performs traction correlation analysis on the load impedance variation and the characteristic harmonic distribution in the impedance harmonic data, and forms traction control data. The excitation execution module accesses control relationship arrangement and excitation regulation relationship arrangement, and generates impedance execution data. The state verification module verifies the inversion output state of the flexible voltage regulator according to the impedance execution data, collects results, and outputs voltage regulating result data. The embedded intelligent voltage regulating system realizes collaborative execution of dynamic impedance matching and characteristic harmonic traction by accessing control relationship arrangement and excitation regulation relationship arrangement.
Owner:GUANGDONG IRIDIUM ELECTRICAL MEASUREMENT & CONTROL TECH CO LTD

A lightning stroke under transmission tower state monitoring and evaluation method

The application discloses a lightning stroke transmission tower state monitoring and evaluation method, relates to the technical field of state monitoring, and collects the ground potential signal data set of the transmission tower at the lightning moment in the system operation, carries out time synchronization processing on the signals of each monitoring point, obtains the ground potential mutation time sequence set, calculates the propagation time delay set between the monitoring points, establishes the propagation characteristic model in combination with the geometric distance set of the tower to the grounding body, generates the propagation characteristic distance set, and compares with the preset reference propagation characteristic distance set, calculates the deviation ratio set, determines that the grounding performance is abnormal when the deviation ratio set exceeds the threshold value, obtains the grounding dynamic impedance set, calculates the grounding performance index according to the grounding dynamic impedance set and the ground potential mutation energy set, compares with the historical standard performance index set again, generates the alarm set if the deviation exceeds the safety limit value, and outputs the safety control instruction to the monitoring system.
Owner:WUHAN CENTURY YUANZHEN ELECTRIC TECH CO LTD

Power grid reliability evaluation method based on main grid and distribution network full voltage level decoupling iterative calculation and related device

PendingCN122292348ADynamic impedancePower grid
This invention discloses a method and related apparatus for power grid reliability assessment using decoupled iterative calculations across all voltage levels in the main and distribution networks. It relates to the field of power grid assessment technology and includes: collecting power grid operation data at each voltage level; performing time alignment and outlier cleaning on multi-source data; classifying the voltage levels as high-voltage, medium-voltage, and low-voltage layers; identifying typical scenarios based on power grid operation data and calculating weights to generate a reference impedance matrix; dynamically calculating adjustment coefficients based on real-time monitoring data to correct impedance parameters; and constructing a coupling factor matrix using historical data to record the impact of faults. The method of this invention achieves dynamic impedance matching across all voltage levels through layered parallel calculations at the high-voltage, medium-voltage, and low-voltage levels, improving computational efficiency while reducing errors in cross-level voltage interaction analysis.
Owner:STATE GRID HUBEI ELECTRIC POWER RES INST

Methods, systems, media and equipment for assessing the supporting capabilities of new energy power grids

This invention provides a method, system, medium, and equipment for assessing the grid support capability of new energy power grids. The method includes: adding a voltage disturbance signal to the main circuit topology of a grid-connected new energy system to form a small-signal model of the main circuit; establishing frequency domain expressions for the per-unit voltage increment relationship and the per-unit current increment relationship of the small-signal model of the main circuit, and then considering the voltage and current dual-loop control of the main circuit small-signal model to obtain a small-signal admittance matrix model; considering the dynamic characteristics of synchronous control, establishing voltage increment relationships and current increment relationships in the system coordinate system and the control coordinate system; and establishing a small-signal dynamic impedance model in the system coordinate system based on the voltage increment relationship and the current increment relationship, and assessing the grid support capability of the new energy power grid. The assessment results can demonstrate the intrinsic mechanism between different grid control strategies and the grid strength support capability.
Owner:STATE GRID ELECTRIC POWER RES INST +4

A LF furnace electrode self-adaptive adjustment control system based on multi-source data fusion

PendingCN122405933ATransformerMulti source data
The present application relates to the field of furnace smelting control, for solving the problem that traditional control method relies on single electric parameter, impedance adjustment lag, weak anti-interference, specifically a kind of LF furnace electrode adaptive regulation control system based on multi-source data fusion, including data acquisition module, fusion processing module, data analysis module, anti-interference module, impedance adjustment module and execution control module;The present application is integrated electric parameter, sonar, vision and position detection multi-source signal, main control variable is generated after fusion processing, then based on main control variable determination smelting stage and submerged arc state, and combined target impedance and submerged arc depth collaborative regulation electrode position, transformer gear and three-phase power balance, realize the dynamic impedance adaptive control driven by multi-source data fusion, improve the stability of submerged arc and impedance matching precision, enhance the anti-interference ability of system, adapt to the needs of different smelting stage, effectively optimize the quality of molten steel, smelting efficiency and reduce energy consumption.
Owner:ANSTEEL ENG TECH CORP

Anti-interference intelligent household appliance wireless communication membrane switch device

PendingCN122119615AElectronic switchingInterference (communication)Membrane switch
The application relates to the technical field of film switches and discloses an anti-interference intelligent household appliance wireless communication film switch device, which comprises, from bottom to top, a substrate layer, a signal control circuit layer, a ground electrode shielding layer, a reconfigurable electromagnetic super surface layer and a haptic panel layer; the reconfigurable electromagnetic super surface layer is composed of array-arranged electromagnetic super surface units, the reflection phase and polarization characteristics of electromagnetic waves of the corresponding super surface units are dynamically regulated by changing the impedance value of the adjustable impedance element; the haptic panel layer is integrated with a distributed haptic sensing array; the device further comprises a radio frequency sensing module and an edge computing processing unit. Through dynamic impedance adjustment of the adjustable impedance element of the super surface unit, the reflection phase and polarization characteristics of electromagnetic waves can be regulated, real-time reactance compensation is realized in cooperation with a haptic electromagnetic coupling prediction model, selective regulation is carried out on interference signals of different frequency bands and different directions, and precise interference signal suppression is realized while ensuring the permeability of the communication frequency band.
Owner:HEFEI XIANGHAO ELECTRONIC TECH CO LTD

A Smart State Management Method and System for RFID Communication Antennas

This invention provides an intelligent state management method and system for RFID communication antennas, belonging to the field of Internet of Things (IoT) communication technology. The method includes generating an initial power configuration table based on the metal density distribution of a 3D rasterized warehouse map, and constructing a dynamic impedance compensation parameter table using temperature and humidity sensor data; collecting AGV position event data, predicting target shelf coordinates using a federated learning historical trajectory library, and activating beamforming; parsing the RSSI phase difference data matrix returned by the antenna, and triggering closed-loop control commands when the phase difference is ≥15° using GNN confidence analysis; adjusting the transmission power using a distance power compensation formula, and performing redundant jumps based on ring bus fault detection; the system includes an environment adaptation module, a spatial pre-activation module, a state monitoring module, and a system maintenance module. This invention improves signal strength in densely metal areas, reduces tilt response speed, effectively reduces ineffective radiation, and improves antenna performance and reliability in complex environments.
Owner:伽利略(天津)技术有限公司

A dynamic impedance self-balancing dual-path bridge single-switch phase shifter

PendingCN122457010ACapacitanceMicrowave
The application discloses a kind of dynamic impedance self-balancing double-path bridge type single-switch phase shifter, it is related to microwave radio frequency integrated circuit technical field.The phase shifter includes main path and controlled compensation path across between input end and output end, forms double-path full-bridge connection topological structure;The main path is by microstrip line, capacitor and the inductance in parallel with it collectively constitute bridge sub-network;The controlled compensation path is by microstrip line, inductance and capacitor in series in order to constitute, and controlled compensation path is equipped with the switching unit across inductance and capacitor two ends.The application utilizes double-path full-bridge connection structure, and the insertion loss under switching double state is optimized to 0.2dB within, with extremely strong impedance self-balancing ability and matching consistency in 3.2GHz-3.8GHz frequency band, can be widely used in 5G communication and radar phased array system.
Owner:UESTC (SHENZHEN) ADVANCED RES INST

A method for dynamic impedance modeling and inertia coordination analysis of a network-constructed hybrid energy storage system

A kind of network configuration type hybrid energy storage system dynamic impedance modeling and inertia collaborative analysis method includes: the fractional order dynamic characteristic model of lithium ion battery pack and electrochemical double layer capacitor module is built, and the key parameters of lithium ion battery pack and electrochemical double layer capacitor module are obtained using measured data;The energy storage state of lithium ion battery pack and electrochemical double layer capacitor module is calculated respectively;The dynamic control model of network configuration type hybrid energy storage system is established, and the key parameters of lithium ion battery pack and electrochemical double layer capacitor module are imported;According to the energy storage state of lithium ion battery pack and electrochemical double layer capacitor module calculated, and the dynamic control model of network configuration type hybrid energy storage system established, the virtual inertia expression of system is deduced.The method can comprehensively consider the complex dynamic characteristics such as internal resistance of energy storage element, interface reaction kinetics characteristics and charge distribution non-uniformity, so as to accurately reflect the influence of energy storage element dynamic characteristics on system inertia.
Owner:HUANGGANG QIANGYUAN POWER DESIGN CO LTD

A method for fault detection in a carbon dioxide fractional laser therapy device

ActiveCN121741359BElectrical testingTesting optical propertiesFractional laserLaser treatment
This invention relates to the field of medical device fault diagnosis technology and discloses a fault detection method for a carbon dioxide fractional laser therapy instrument. The method establishes reference driving parameters and reference electrical impedance characteristics during the calibration phase; during detection, it simultaneously acquires scanning coordinates, laser voltage and current, and real-time driving signals. The method first calculates the laser's dynamic impedance based on voltage and current. If the impedance deviates from the reference characteristics, the fault source is determined to be the laser. If the impedance is normal, a compensation intensity scalar is calculated based on the difference between the real-time driving signal and the reference parameters, and the emitted test pulse train is controlled to calculate the power modulation slope. Finally, based on the spatial distribution of the compensation intensity scalar with the scanning radius and the power modulation slope, the fault type is determined to be a geometric alignment fault, a thermal contamination fault, or a global optical path attenuation. This invention can effectively distinguish between electrical system faults and optical system faults and accurately identify the specific attributes of optical path faults.
Owner:BEIJING SANO LASER S&T DEVELOPMENT CO LTD

A battery pack charging equalization control system based on dynamic impedance matching

The application discloses a battery pack charging equalization control system based on dynamic impedance matching, comprising a data acquisition module, a contact fault diagnosis module connected to the data acquisition module, a system state decision module connected to the contact fault diagnosis module, a dynamic impedance online identification module connected to the data acquisition module, an intelligent equalization decision module connected to the contact fault diagnosis module, the system state decision module and the dynamic impedance online identification module respectively, and an equalization execution module connected to the intelligent equalization decision module. In the application, the sampling contact fault can be early and accurately identified, and graded alarm and system degraded operation can be automatically triggered according to the fault severity, so that safety accidents caused by measurement errors are prevented from the control strategy level, and the tolerance of the system to hardware defects is greatly improved.
Owner:BEIJING JIAJIE HENGXIN ENERGY TECH CO LTD

Automated coordinated regulation system for production flow in discrete manufacturing

ActiveCN121995774BDynamic impedanceControl engineering
This invention relates to the field of discrete manufacturing process control technology, and discloses an automated collaborative adjustment system for discrete manufacturing processes, comprising: node control units distributed at process nodes and collaborative control calculation units; the collaborative control calculation unit converts the node running cycle into time axis distribution parameters in a time-series logic association model, calculates the target adjustment vector based on the parameters, and uses a feedforward shaping mechanism to superimpose compensation pulses on the output leading edge of the target adjustment vector, so that the adjustment signal breaks through the physical execution dead zone of the underlying drive execution unit. This invention smooths out the difference in dynamic impedance between the ideal control law and the mechanical actuator through signal shaping, realizes a hysteresis-free response to extremely small disturbances, blocks the nonlinear amplification of errors within a rigid time-series framework, and ensures stable convergence of the control loop.
Owner:ZHEJIANG XINGDAXUN SOFTWARE CO LTD

Grouping state recognition and pairing method for cascade utilization of batteries

The application discloses a grouping state recognition and pairing method for cascade utilization batteries, and relates to the technical field of battery evaluation. The method comprises the following steps: obtaining historical operation data of each single battery in the batteries to be grouped, constructing a voltage-temperature-current three-parameter coupling state space, and generating a multi-dimensional coupling state matrix; extracting a dynamic impedance spectrum feature vector and a temperature-rate joint attenuation factor, inputting a time series prediction model to generate predicted attenuation trajectory data, and calculating a dynamic time warping distance as an initial trajectory consistency index; when the preset trajectory threshold is not met, the wavelet coefficients are corrected in reverse based on the voltage-current residual sequence, and are recalculated to iteratively generate a target trajectory consistency index; finally, a trajectory similarity graph is constructed by taking the target trajectory consistency index as an edge weight, and a normalized cut algorithm is executed to generate an optimal grouping result. The application realizes accurate sorting and dynamic matching of retired batteries, and improves the operation stability and service life of the cascade utilization battery group.
Owner:TONGREN POLYTECHNIC COLLEGE

A novel transducer of nested double shell

PendingCN122369413ADynamic impedanceTransducer
This invention discloses a novel nested double-shell transducer, relating to the field of transducer technology. Existing transducers suffer from low energy utilization, short effective operating distance, and poor receiving sensitivity. This invention utilizes an elliptical inner shell to generate a displacement amplification effect. A circumferentially gradient acoustic metamaterial layer is filled in the non-uniform gap between the inner and outer shells to achieve unidirectional sound wave transmission and impedance matching. A spiral-shaped, gradually changing acoustic prism is installed on the inner wall of the outer shell to convert the sound waves into a highly directional vortex beam. A dynamic impedance matching unit is installed on the outer surface of the outer shell, working in conjunction with an intelligent control module to achieve dual closed-loop adaptive control of the inner shell mode and the outer shell impedance. Through the synergistic effect of geometric amplification, material matching, and beam modulation, this invention improves energy utilization by 50%-70%, increases the effective operating distance by more than 2 times, significantly enhances receiving sensitivity, and widens the operating bandwidth by 2-3 times.