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133 results about "Strongly coupled" patented technology

Regional energy internet hierarchical control method considering flexible load

The invention discloses a regional energy internet hierarchical control method considering flexible loads, which comprises the following steps of: constructing a global layer, dividing a regional energy internet into a plurality of electrically strongly coupled sub-regions by adopting a dynamic partitioning algorithm, aggregating equivalent adjustable capacities of the flexible loads in the sub-regions, and performing rolling optimization in an hour-level time scale, an improved Benders decomposition algorithm is adopted to accelerate solving and generate a partition-level power regulation instruction; constructing a regional layer, designing a thermodynamic-economic hybrid constraint model according to flexible load physical characteristics and user behavior elasticity, introducing a user comfort recovery time constraint and elastic electricity price response function, and decomposing an adjustment instruction issued by the global layer to each flexible load cluster in a minute-level time scale by adopting a parallel ADMM optimization algorithm; and constructing a load layer, constructing a millisecond-level adjustable load priority switching mechanism based on FPGA hardware acceleration and finite-state machine logic, calculating a load adjustable power boundary in real time, and dynamically adjusting a response queue in combination with system frequency deviation.
Owner:STATE GRID CORPORATION OF CHINA +2

Dry quenching boiler inlet temperature prediction method based on DeepSeek large model

The invention belongs to the technical field of dry quenching, and provides a dry quenching boiler inlet temperature prediction method based on a DeepSeek large model. According to the method, the inlet temperature T6 of the coke dry quenching boiler is predicted by using the data, namely the process variable, changed in real time in the coke dry quenching process; the key control variable is a manually controlled variable, the change of the process variable is controlled / adjusted by changing the key control variable, and automatic control is realized by utilizing a prediction-control joint optimization method and by means of reinforcement learning. According to the prediction method provided by the invention, a complex nonlinear relationship and interaction among multiple variables can be captured, and strong coupling and nonlinear influence among multiple process parameters in the dry quenching process can be processed; through fine tuning on a large amount of historical data, the method can automatically learn and adapt to different working conditions, reduces the dependence on artificial feature engineering, and improves the generalization capability and prediction performance of the model.
Owner:SHANDONG QINGBO IND TECH CO LTD

Manufacturing method of acoustic liner structure and acoustic liner structure

The invention relates to the technical field of acoustics, in particular to a manufacturing method of an acoustic liner structure and the acoustic liner structure. The acoustic lining structure comprises a first panel, an embedded tube plate, a surrounding wall structure and a second panel which are sequentially arranged in the thickness direction of the acoustic lining structure, the embedded tube plate and the first panel are matched to form a plurality of embedded tubes, the second panel is a through hole panel, and therefore the first panel, the embedded tube plate, the surrounding wall structure and the second panel are matched to form a plurality of acoustic elements. Each acoustic element is provided with a plurality of Helmholtz cavities arranged side by side, the spaced Helmholtz cavities are communicated through embedded pipes to form an element, other Helmholtz cavities which are communicated through or not through the embedded pipes form another element, and the silencing capacity of the acoustic liner structure can be enhanced through the strong coupling effect and the weak coherent coupling effect in different acoustic elements. According to the acoustic liner structure and the manufacturing method thereof, under the condition that the thickness of the acoustic liner structure is limited, the low-frequency, broadband and efficient noise elimination characteristics can be achieved, the manufacturing process is clear, and operability is high.
Owner:SHANGHAI AIRCRAFT MFG

Strong-coupling dual-polarization ultra-wideband phased-array antenna based on fishbone-shaped gap loading

The invention discloses a strongly-coupled dual-polarized ultra-wideband phased-array antenna based on fishbone-shaped gap loading and a development method of the strongly-coupled dual-polarized ultra-wideband phased-array antenna. A series of fishbone-shaped gaps with different sizes and intervals are formed in the dipole, a traditional cross-shaped dipole is improved, and the working bandwidth of the antenna is expanded. Resistive loading of a traditional ultra-wideband array is not used, and the radiation efficiency is improved. The feed structure of the power divider and the double-balun is applied, so that better matching can be realized, and the profile height of the antenna is reduced. The whole antenna array adopts the light and thin dielectric substrate, a thick and heavy wide-angle impedance matching layer is omitted, and the weight is lighter. + / -45-degree scanning can be achieved within the frequency band of 0.25-1.85 GHz, and the overall height of the antenna is 0.054 times of the low-frequency wavelength.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Improved linear gain digital control method for power supply system

The invention belongs to the technical field of automatic control, and particularly relates to an improved linear gain digital control method for a power supply system. The problems that a traditional fixed linear gain digital controller is poor in control precision, robustness, response speed and stability, prone to overshoot and oscillation, heavy in calculation burden, large in hardware consumption and the like in a complex dynamic environment and a nonlinear or strong coupling system are solved. According to the method, an operation state and environment parameters are obtained and processed, and system dynamic characteristics are intelligently evaluated; calculating an optimal control gain factor in combination with a gain scheduling rule or an adaptive learning model, and applying the optimal control gain factor to a linear digital controller for dynamic adjustment; and non-linear compensation processing is carried out on the adjusted control quantity, so that accurate closed-loop control is realized. The control precision can be obviously improved, the system response can be accelerated, the external interference suppression capability can be enhanced, the hardware dependence can be reduced, overshoot and oscillation can be eliminated, and high-precision, low-power-consumption and wide-adaptability digital control can be realized.
Owner:SHENZHEN HOPAI ELECTRONIC TECH CO LTD

LLM command line generation tool and transplantation method based on OpenHarmony

The invention provides an LLM command line generation tool based on OpenHarmony and a transplantation method, belongs to the technical field of industrial Internet of Things, and aims to solve the problems that a traditional TypeScript / Node. Js scheme has limitation, is insufficient in local reasoning performance, safety performance and reliability and is high in deployment cost. The tool comprises an ETS development environment module, a code migration module, a dependency library adaptation module, a security enhancement module certificate and a deployment and operation module, a zero-dependency transplantation scheme is designed for special environments of unpacked management tools such as OpenHarmony, the problem of strong coupling of a traditional Node.js application to the environment during operation is solved, and the safety of the Node. Js application is improved. And the deployment threshold of the heterogeneous system is further reduced.
Owner:HARBIN INST OF TECH

Geographic dependence coupling parameter optimization method based on analysis of four-dimensional set variation

The invention discloses a geographic dependency coupling parameter optimization method based on four-dimensional set variation analysis, and belongs to the technical field of ocean data assimilation. Comprising the steps that independent points are selected, a parameter initial disturbance field set is generated, A-4DEnVar data assimilation is carried out, and full-grid parameters are obtained based on independent point parameter value interpolation. According to the method, the mode parameters closely related to the interaction of the coupling components in the coupling mode are optimized based on the A-4DEnVar data assimilation method under the strong coupling data assimilation framework, the influence of strong nonlinearity caused by the coupling mode can be well treated, meanwhile, an adjoint mode is not needed, the problem that the calculation amount of a traditional algorithm is huge is solved, and the method is suitable for large-scale popularization and application. And the problem of simulation precision reduction caused by globally unified coupling parameters is avoided. A corresponding independent point selection scheme does not need to be formulated for a specific problem, and the workload of manual point selection is also reduced. In conclusion, the coupling mode deviation can be efficiently corrected by utilizing the method, technical support is provided in the aspect of improving the accuracy of climate prediction and forecasting, and the method has a relatively good application prospect.
Owner:NO 3 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY +2

Model-free superhelix fast integration terminal sliding mode control method for permanent magnet synchronous motor

The invention provides a novel model-free fast integration terminal sliding mode controller method for a permanent magnet synchronous motor based on an improved extended nonsingular terminal sliding mode disturbance observer, and the method is compared with a PI control method and a model-free sliding mode control method based on an extended sliding mode observer. The method can reduce the dependence of a controller on a specific mathematical model of a controlled system, is more suitable for nonlinear and strong coupling systems such as a permanent magnet synchronous motor, employs an improved extended nonsingular terminal sliding mode disturbance observer to estimate unknown total disturbance, and enhances the robustness and anti-interference capability of the method. The control method has high response speed and high control precision, and has a good fault-tolerant control function on the parameter perturbation of the motor, so that the permanent magnet synchronous motor can operate efficiently, stably and reliably under the parameter perturbation condition.
Owner:HUNAN UNIV OF TECH

Selective optical tuning of qubit two-level system interactions using bandpass filters

Methods and systems for mitigating the effects of defects in a quantum processor are provided. A mitigation system includes a quantum processor comprising a plurality of qubits. The system includes a light emitting source that can be tuned to produce light pulses of different wavelengths. The system includes an array of bandpass filters. Each bandpass filter is aligned with a qubit on the quantum processor and has a unique pass band. The system may include a controller configured to receive a selection of a qubit and to tune the light emitting source to emit a light pulse having a wavelength that falls within a range of a bandpass filter that is aligned with the selected qubit. The light pulse is used to scramble an ensemble of strongly coupled two-level system (TLS) in the processor.
Owner:INTERNATIONAL BUSINESS MACHINE CORPORATION

Control method for interceptor under attitude and orbit combination

The invention discloses a control method of an attitude-orbit composite lower interceptor, and relates to the technical field of automatic control. Obtaining a strong coupling state space equation according to an angular acceleration calculation formula of the sight angle and a kinetic equation of the interceptor; constructing a high-order multi-dimensional sliding mode matrix according to the strong coupling state space equation, and designing a strong coupling control law of an attitude control engine and an orbit control engine of the interceptor according to the high-order multi-dimensional sliding mode matrix; according to a stable condition and a fixed time convergence condition of an interceptor guidance control system under attitude and orbit combination, solving an interference term in the strong coupling control law to obtain an estimated value of the interference term; and substituting the estimated value of the interference item and the state data of the interceptor into a strong coupling control law of the interceptor to obtain lateral thrust which is generated by an attitude control engine and an orbit control engine and is vertical to a projectile body shaft so as to control the interceptor. The method can improve the control precision of the interceptor.
Owner:XI AN JIAOTONG UNIV

Fluctuation signal coupling noise suppression method based on neural network

The invention discloses a fluctuation signal coupling noise suppression method based on a neural network, which is a coupling noise suppression method in an auto-encoder fluctuation signal based on adjacent position constraint and first arrival pre-sample guidance, and is applied to the field of fluctuation signal data processing. In order to solve the problem that effective signals are prone to being greatly damaged when the coupled noise is suppressed in the prior art, the invention designs a method for representing the characteristics of waveform similarity of adjacent spatial positions of the coupled noise and fluctuation signals based on the weight of a noise sample before first arrival, and under a robust principal component analysis framework, on the basis of a model and data combined driving strategy. Effective signals and strong coupling noise are separated in an unsupervised mode, and damage to the effective signals is reduced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Dynamic modular intelligent tumor staging system and method based on MCP protocol and LLM

The invention relates to the technical field of medical detection, in particular to a dynamic modular tumor intelligent staging system and method based on an MCP protocol and LLM. Different staging rules are packaged into independent dynamic staging calculation modules respectively and stored in a dynamic staging calculation module library; meanwhile, tool functions corresponding to different staging rules are registered in the MCP coordination service module through an MCP protocol to form a tool function list, so that the staging rules exist in a modular tool form, and strong coupling of rules and core codes in a traditional system is avoided; after semantic analysis is carried out by the LLM intelligent agent module, a corresponding tool function in a tool function list is automatically matched and called, so that flexible adaptation from multi-modal data to structured TNM data is realized; the analysis logic does not need to be reconstructed when the data source type is newly added; on the other hand, when the staging rules are updated or increased, core codes of the system do not need to be modified, the system does not need to be redeployed, and the flexible response capacity of the system to staging rule iteration and multi-modal data adaptation is greatly improved.
Owner:LIBEN HEALTHCARE (CHENGDU) CO LTD

Methods for determining a parameter of a coupling element in a quantum circuit

There is described herein a method for determining a parameter of a coupling element in a quantum circuit, the quantum circuit comprising a qubit, the coupling element coupled to the qubit, and a readout element. The method comprises selecting the qubit or the readout element as a probing element, tuning a frequency of the qubit, performing a measurement of a parameter of the probing element on the readout element while an effective coupling rate of the probing element and the coupling element is in the strong coupling regime, and determining the parameter of the coupling element from the parameter of the probing element.
Owner:ANYON SYSTEMS INC

Decoding algorithm program authorization and binding method on embedded chip

The invention relates to a decoding algorithm program authorization and binding method on an embedded chip, which comprises the following steps that: an authorization server generates an asymmetric key based on a chip UID (User Identifier), performs static encryption on an algorithm code by utilizing symmetric encryption and then splits the key into fragments, the fragments are respectively stored in a chip security area and a server side, and signatures are added to the fragments to verify the integrity. And when the chip is activated for the first time, the server verifies the legality of the UID and issues fragments through the secure channel, and after recombination, the symmetric key is decrypted to recover an algorithm plaintext code. During operation, a dynamic offset is generated through multiple rounds of Hash iteration of a chip UID, a control flow jump address is redirected in real time, and in combination with polymorphic transformation and invalid instruction filling obfuscation logic, a code execution path is uniquely bound with hardware, and fragmentation recombination verification is strongly coupled with dynamic offset calculation logic. According to the method, through cooperation of an encryption strategy, a hardware security module and a dynamic obfuscation technology, the comprehensive protection capability of reverse engineering resistance, physical attack resistance and code duplication resistance is remarkably enhanced.
Owner:NEWLAND YOUMAIJIE (GUANGDONG PROVINCE) TECHNOLOGY CO LTD

Multi-dimensional state operation monitoring method and system based on yaw collector ring

The application relates to the technical field of yaw slip ring state monitoring, and specifically discloses a multi-dimensional state operation monitoring method and system based on a yaw slip ring, which comprises the following steps: obtaining an original operation data set of the yaw slip ring, wherein the original operation data set contains operation parameters in the electrical, mechanical, attitude and environmental dimensions which are collected via sensors and subjected to redundancy checking; constructing a noise suppression matrix based on the physical mechanism of the yaw slip ring, filtering isolated fluctuations and cross-modal abnormal values in the original operation data set by using the noise suppression matrix, and inputting the noise suppression matrix into a convolutional neural network model to obtain a fusion feature vector. By introducing the noise suppression matrix constructed based on the physical mechanism and the channel interaction mechanism guided by the physical topology, the technical problem that a lightweight model is difficult to extract cross-modal strong coupling features at an edge end is effectively solved, and the sensitivity and accuracy for early composite faults are significantly improved without increasing the computing power burden.
Owner:WENZHOU KEFEI POWER TECH CO LTD

Reactor nuclear material cross-scale simulation method coupling microstructure simulation and mechanical-thermal performance calculation

The invention discloses a reactor nuclear material cross-scale simulation method coupling microstructure simulation and mechanical-thermal performance calculation. The method comprises the following steps: a, planning a most unit sampling point through a most unit method; b, simulating through a mesoscale phase field model to obtain force thermal parameters; c, the force and heat parameters are input into a finite element model to be simulated to obtain force and heat performance; d, the mechanical and thermal performance is input into the phase field model for simulation to obtain the structure morphology of the target nuclear material; e, obtaining a macroscopic scale-mesoscopic scale coupling model by circulating the step c and the step d; f, obtaining a strong coupling model through physical time axis control; and g, constructing a database of the relationship between the mechanical and thermal parameters and the mechanical and thermal performance through a data-driven neural network algorithm. According to the method, strong coupling is achieved through parameter transmission of the mesoscale phase field model and the macroscale finite element, the macroscale and the mesoscale are connected through the most element method, the parameter transmission precision can be adjusted according to convergence, and novel reactor material mechanical and thermal performance prediction can be achieved.
Owner:XI AN JIAOTONG UNIV

A three-dimensional communication coverage method for joint optimization of ground base station downtilt angle and air base station deployment position

This invention relates to the field of wireless communication network optimization technology, specifically a three-dimensional communication coverage method that jointly optimizes the downtilt angle of ground base stations and the deployment location of airborne base stations. Based on an integrated air-ground network, this method designs a two-layer optimization architecture for network optimization. By handling the location selection of airborne base stations and the adjustment of antenna tilt angles of ground base stations separately, it avoids strong coupling between discrete and continuous variables, thereby preventing superlinear expansion of the solution space. Simultaneously, by introducing SPSA simulated gradient technology and the ZO-Adam optimization algorithm, it overcomes the non-smoothness and non-convexity problems of the system's spectral efficiency function, ensuring the stability and convergence of the optimization process. Furthermore, the two-layer optimization architecture effectively alleviates the path dependency problem of greedy algorithms, achieving a balance between global search and timeliness.
Owner:XIDIAN UNIV

A method, system and medium for adjusting power setting value of reactor control system

The present invention discloses a method, system and medium for adjusting the power setting value of a reactor control system; relates to the technical field of reactor power control; performs online fault detection on an actuator of the reactor control system; when a fault in the actuator is detected, determines a fault symptom variable and an operating power setting value; pre-processes the fault symptom variable to obtain an input variable, inputs the input variable into a constructed fuzzy tuning model to calculate an operating power compensation value; adjusts the power setting value of the reactor control system by combining the operating power setting value and the operating power compensation value; for a multi-variable, strongly coupled nonlinear small pressurized water reactor system, when a feedwater valve fault and a control rod drive mechanism jam occur, a fuzzy tuning model with strong uncertainty processing capability is used to establish a relationship between the operating power compensation value and the fault symptom variable, automatically adjusts the reactor power setting value, and realizes fault-tolerant control of the reactor control system.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Quantum plexcitonic biosensing and methods thereof

A molecular sensing device and molecular sensing method that are based on quantum plexcitonic states on strongly coupled nanophotonic systems are disclosed. The molecular sensing device includes a metasurface, a layer of a semiconducting and / or dielectric material disposed onto a layer of electrically conducting material, a metal nanohole array disposed onto the metasurface, a biological recognition element disposed onto a surface of the metal nanohole array, and where the surface of the metal nanohole array is configured to receive a bioanalyte and a plurality of quantum emitters. The molecular sensing device can be a mixture of quantum emitters, comprising gold, having more than one aspect ratio. The molecular sensing device may include a spectroscopic instrument, including a portable detector. The one or more biological recognition elements are configured to recognize a communicable disease in response to the presence of a specific biological recognition element.
Owner:JOHNS HOPKINS UNIVERSITY

Production line ingredient automatic control system and method for compounding spices

The invention discloses a production line ingredient automatic control system and method for spice compounding, and belongs to the technical field of production line control. The method comprises the following steps: acquiring sensor data, defining a state vector and fusing the sensor data; establishing an anti-blocking control model, performing model adaptive correction, and outputting an anti-blocking control strategy; agglomerated particles are identified, particle size distribution is output, and particle size grades are divided; executing a disassembly strategy based on the particle size grade, and verifying the disassembly effect to obtain a caking verification result; when it is confirmed that no caking exists in the feeder, the lag time caused by the viscous ingredients is updated; adding fuzzy adaptive compensation to obtain compensation time; establishing a lag compensation effect evaluation index, carrying out no-load and full-load lag test on each spice based on the lag time, and verifying the compensated coupling error; and through relative gain matrix analysis, establishing a cross compensation matrix for the strong coupling pair, and generating a compensated rotating speed instruction of the feeder.
Owner:JIANGXI HUANGSHANGHUANG GROUP FOOD

A digital twin-based dynamic performance digital design method of a blower

This invention belongs to the technical field of digital design of Roots blower equipment, specifically involving a digital twin-based digital design method for the dynamic performance of blowers. This method includes constructing a parametric structural model of multiple components of the blower, establishing a multi-physics coupled model encompassing aerodynamics, structure, heat, electromagnetics, and acoustics, applying dynamic boundary conditions such as flow disturbances, inertial forces, and base disturbances, constructing a digital twin model synchronized with the physical blower state, performing a master-slave strongly coupled joint solution, extracting multi-field response indices and performing normalization analysis, and finally outputting optimized design parameters for the blower through a multi-objective optimization feedback mechanism. This invention enables multi-domain balanced design among the blower's structural performance, electromagnetic response, thermal stability, and acoustic characteristics, improving modeling accuracy and parameter optimization capabilities, and is suitable for the digital development of high-reliability Roots blower equipment under complex operating conditions.
Owner:CHANGSHA BLOWER CO LTD

A FP-cavity-anapole-exciton system for realizing multiple strongly coupled Rabi splits

This invention relates to the field of optical technology, specifically to a multi-mode FP-anapole-exciton system that achieves multiple strongly coupled Rabi splits. The system comprises basic units arranged in a two-dimensional periodic pattern, with a square period. Each basic unit includes, from bottom to top, a first dielectric layer, a first metal layer, a composite layer, a second metal layer, and a second dielectric layer. The composite layer includes a transparent dielectric and a heterogeneous disk embedded within it. The heterogeneous disk includes, from top to bottom, a first dielectric disk, a semiconductor disk, and a second dielectric disk. This invention utilizes incident light waves to induce excitation of multiple FP-cavity modes, anapoles, and excitons. Through precise structural design and parameter adjustment, it achieves strong coupling between these multiple FP-cavity modes, anapoles, and excitons, expanding the number of Rabi splits, enhancing the strength of the three-mode coupling, and obtaining multiple large Rabi splitting energies. It has broad application prospects in ultrafast optical switches, Bose-Einstein condensates, and low-threshold lasers.
Owner:JIANGXI NORMAL UNIV

Phase modifier network-related test simulation platform based on multi-physics field coupling

The invention relates to a phase modifier network-related test simulation platform based on multi-physics field coupling. The platform comprises a power grid fault generation device, an electromagnetic field theoretical calculation device, a thermal field theoretical calculation device, a structure field calculation device and a multi-source input coupling device. According to the multi-physical field coupling simulation platform constructed in the scheme, the limitation of a traditional isolated calculation method is thoroughly overcome through a real-time interaction mechanism of dynamically integrating an electromagnetic field, a thermal field and a structural field. Under a power grid fault working condition, the platform accurately simulates a strong coupling effect among electromagnetic loss, temperature distribution and mechanical deformation (such as local overheating caused by eddy-current loss, air gap offset caused by thermal expansion and closed-loop influence of electromagnetic imbalance aggravated by eccentricity); and the output actual parameter set (electromagnetic force density, temperature rise curve, air gap eccentricity and the like) is highly close to the real operation state of the phase modifier set.
Owner:CHINA POWER INVESTMENT XINJIANG ENERGY & CHEMICAL GROUP TOLI CO LTD

RFID Signal Completion and Anti-Interference Method and System Based on Contrastive Learning in Small-Space Dense Storage Environment

The present invention belongs to the technology of enhancing RFID signal quality, and is a method and system for RFID signal completion and anti-interference based on contrast learning in a small-space dense storage environment. The method includes the steps of: optimizing the automated reading of RFID signals, so as to optimize radio frequency identification in real time according to environmental changes and achieve adaptive reading of RFID tags; separating and extracting RFID signals, separating the strongly coupled part in the read RFID signals to reduce the generation of incorrect data due to the collision and coupling of RFID signals with each other; training a contrast learning model based on a convolutional neural network according to the spatial position relationship between historical RFID signals and RFID tags, so that the contrast learning model can learn the pattern and relationship features of RFID signals and complete incomplete RFID signals. The present invention can effectively solve the problem of missed or misread data caused by RFID signal collision in a small-space dense storage environment.
Owner:CHINESE PEOPLES ARMED POLICE FORCE GUANGDONG PROVINCIAL CORPS HOSPITAL

Metamaterial non-reciprocal absorber based on lying structure

The invention discloses a metamaterial non-reciprocal absorber based on a'lying 'structure, a conductive patch is attached to the side surface, a supporting surface is made of polyimide, a layer of substrate is arranged above and below the structure, the absorber comprises a substrate and a'lying' metal unit array periodically arranged on the surface of the substrate, the inclination angles of the metal units are continuously increased in the preset direction, through asymmetric distribution of space angles, forward incident electromagnetic waves and the metal units generate strong coupling absorption, reverse incident electromagnetic waves are high in transmission due to weakening of the coupling effect and air waveguide, and efficient non-reciprocal response can be achieved without an external magnetic field. According to the invention, the structure is in a lying type and has the characteristics of high integration level, nonreciprocity, broadband response and the like, the working bandwidth can reach ten times of frequency, and the device can be applied to scenes of flexible electronics, on-chip optical communication, ultrathin radar stealth coatings and the like.
Owner:NANJING UNIV OF POSTS & TELECOMM

A bandpass frequency selective surface structure based on strong coupling pairs

This invention discloses a bandpass frequency-selective surface structure based on strongly coupled pairs, composed of multiple basic structural units. Each basic structural unit has a vertically symmetrical structure along its thickness direction. Both the upper and lower symmetrical portions include a first metal layer and a first dielectric layer in symmetrical positions. The first metal layer contains a first resonator pair, a second resonator pair, and a third resonator pair, each using metal patches as resonators. A second metal layer and a second dielectric layer, separated along the thickness direction of the basic structural unit and in asymmetrical positions, are disposed between the upper and lower symmetrical portions. The upper and lower symmetrical portions are connected by metal conductive posts. This invention operates stably at a center frequency of 5 GHz, introduces four transmission zeros, achieves a fourth-order frequency response within 8.4% of the relative bandwidth, has an insertion loss of less than 0.49 dB, and 40° angular stability, exhibiting superior performance.
Owner:SOUTH CHINA UNIV OF TECH

Covalent bond bonded MoBTx / CdS composite material and preparation method and application thereof

The invention belongs to the technical field of photocatalyst composite materials, and particularly relates to a covalent bond bonded MoBTx / CdS composite material and a preparation method and application thereof.According to the MoBTx / CdS composite material, rod-shaped CdS and two-dimensional layered MoBTx are compounded through an in-situ growth strategy, covalent bonding between Mo atoms and S atoms is achieved at an interface, and the MoBTx / CdS composite material is obtained. Therefore, a strong-coupling heterogeneous interface is constructed. The covalent bond mediated composite structure can significantly enhance visible light absorption and optimize carrier separation and transmission kinetics, thereby improving the activity and stability of hydrogen production by photocatalytic decomposition of water. The material is excellent in environmental adaptability and can keep good hydrogen evolution performance under complex water quality and low-temperature conditions. The research provides a new interface engineering idea for designing an efficient and stable semiconductor-metal boride photocatalyst.
Owner:ZHENGZHOU UNIV

A shortwave miniaturized antenna based on electromagnetic super-metamaterial resonance mechanism

The application discloses a shortwave miniaturized antenna based on electromagnetic super-metamaterial resonance mechanism and belongs to the technical field of wireless communication and antenna. The antenna comprises a main radiator, a plurality of electromagnetic super-metamaterial resonance units and a feeding structure, wherein the physical length of the main radiator is far less than the working wavelength; the super-metamaterial resonance units are arranged in the near-field region of the main radiator and are strongly coupled with the main radiator, magnetic resonance or electric resonance is generated at a target shortwave frequency point, a frequency splitting effect is generated, the resonance frequency of the antenna is greatly reduced, and deep miniaturization is realized; and the feeding structure is used for coupling radio frequency energy. The application can reduce the size of the shortwave antenna to less than 1 / 5 of the size of a conventional antenna, meanwhile, a relatively high radiation efficiency is maintained, frequency electric tuning can be realized through integrated adjustable elements, and the application is suitable for shortwave communication occasions with limited space, such as mobile platforms and portable devices.
Owner:ZHEJIANG UNIV CITY COLLEGE

Inversion method for multiple constitutive parameters of material and related equipment

The invention discloses a material multi-constitutive parameter inversion method and related equipment, and the method comprises the steps: S1, inputting a candidate constitutive parameter combination into a pre-trained proxy model, and obtaining a mechanical response dimension reduction representation corresponding to the candidate constitutive parameter combination; s2, based on the mechanical response dimension reduction representation corresponding to the candidate constitutive parameter combination and a predetermined primary function set, reconstructing to obtain a mechanical response prediction curve corresponding to the candidate constitutive parameter combination; s3, performing matching degree calculation on a mechanical response prediction curve corresponding to the candidate constitutive parameter combination and a target experiment mechanical response curve; s4, judging whether a convergence condition is met or not according to the matching degree: if yes, outputting the current candidate constitutive parameter combination as an inversion result; and if not, updating the candidate constitutive parameter combination and returning to the step S1. The objective of the invention is to overcome the problem of low efficiency caused by strong coupling among parameters and high calculation cost of direct problem solving in a traditional inversion method.
Owner:XI AN JIAOTONG UNIV

Microfluidic Droplet Formation Detection and Control Method and System

This invention relates to the field of microfluidic control technology and discloses a method and system for detecting and controlling microfluidic droplet formation. The method first constructs an ideal concentric ring geometric model by acquiring the target parameters of the microcapsule and establishes a force-shape coupling response matrix. Based on this, a preset velocity triplet is solved to generate the initial droplet. Then, droplet image sequences are acquired and fitted with real-time concentric ring groups. These are geometrically superimposed with the ideal concentric ring geometric model to generate a deviation ring domain, which is then decomposed hierarchically to obtain geometric deformation characteristic components. Finally, a coordinated velocity adjustment vector is calculated using the force-shape coupling response matrix, a composite fluid correction field is constructed, and the deviation ring ablation cycle is iteratively executed until geometric convergence is achieved. This invention effectively solves the oscillation problem caused by strong parameter coupling in multiphase flow fields by constructing a quantitative mapping and inverse decoupling mechanism between fluid and geometric shape, achieving coordinated and precise control of the microcapsule's external dimensions and internal structure.
Owner:CHINA JILIANG UNIV