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51 results about "Strong coupling" patented technology

Strong coupling technological process prediction method based on large model fine tuning

The invention discloses a strong coupling process prediction method based on large model fine tuning, and relates to the technical field of industrial process intelligent optimization, and the method comprises the steps: S1, carrying out the cleaning, coupling feature extraction, time sequence standardization and VAE small sample enhancement of strong coupling process original data, and obtaining standardized time sequence data; s2, selecting a Transform architecture industrial time sequence pre-training large model as a base model; s3, through a layered freezing-fine tuning mechanism, freezing a bottom-layer general knowledge layer, performing fine tuning on a middle-layer coupling feature adaptation layer and a top-layer multi-branch output layer, and completing model adaptation in combination with a weighted loss function containing a coupling constraint regular term; and S4, inputting data to obtain a prediction result, and realizing rapid iteration of the model through increment fine tuning. The method is suitable for strong coupling scenes of chemical engineering, metallurgy and the like, an iron-making and steel-making process is taken as an experimental case, the predicted MAE of the molten iron temperature reaches 9.2 DEG C, the predicted MAE of the carbon content of the molten steel reaches 0.012%, the generalization accuracy rate is 93%, the prediction precision and the industrial suitability are remarkably improved, and the production energy consumption and cost are reduced.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI

Electromagnetic actuator with rigidity compensation function

The invention discloses an electromagnetic actuator with a rigidity compensation function. The end face of the inner side of a stator iron core of a C-shaped structure is provided with a trapezoidal slope notch, and the working face of a rotor is a slope matched with the notch of the stator iron core; the N pole and the S pole of the permanent magnet are attracted to the upper end arm of the stator core, the coil winding is wound on the yoke portion of the stator core, the flexible guide mechanism is connected with the rotor and the base, the lower end arm of the stator core is connected with the base through a fastener, and the fastener is screwed to adjust the relative distance between the end face of the stator core and the working face of the rotor. According to the invention, the rotor and the stator core form an inclined air gap, and the linear displacement of the rotor is not equal to the normal thickness of the air gap any more, but is amplified in geometrical relationship. The fundamental contradiction of strong coupling of the stroke and the thickness in a traditional plane air gap is overcome, on the premise that a small initial normal air gap is maintained, the macroscopic motion stroke several times of the thickness is achieved, and the problem that large stroke and high linearity are difficult to consider at the same time is solved from the structural principle.
Owner:NAT UNIV OF DEFENSE TECH

Database control type gate control of quantum computer based on strong and weak coupling nuclear spin of NV center and adjacent atomic nucleus

The present invention relates to a quantum computer comprising NV centers in diamond as quantum bits, nuclear spins of nuclei strongly coupled to the NV centers, strongly constrained by these NV centers, as nuclear quantum bits (hereinafter referred to as strong nuclear quantum bits), and nuclear spins, weakly constrained by these NV centers, of nuclei weakly coupled to the NV centers as nuclear qubits (hereinafter referred to as weak nuclear qubits). The resonance energy for coupling the weakly coupled nuclear spins of the nuclei weakly coupled to the respective NV centers depends only weakly on the respective spin state of the electron configuration of the NV centers weakly coupled to that nuclear spin. The control mode of the quantum computer on nuclear spin under weak constraint of the NV center is different from the control mode of the quantum computer on nuclear spin under strong constraint of the NV center. To this end, the quantum computer preferably has a kernel qubit database that stores information about whether the kernel qubits are strongly coupled or weakly coupled.
Owner:SAXONY CO LTD

Biaxially-oriented polypropylene (BOPP) rolling driving safety linkage control method

The invention discloses a BOPP (Biaxially-oriented Polypropylene) rolling driving safety linkage control method, which relates to the technical field of industrial automation control and comprises the following steps: establishing an electromagnetic disturbance distribution diagram of a driving and rolling signal transmission path, extracting electromagnetic coupling strength distribution on the basis of a current pulse space diffusion track generated by a driving device and a rolling device in a start-stop stage, and calculating a driving speed of the driving and rolling signal transmission path; and dividing a strong coupling region and a weak coupling region according to the coupling strength to form a continuous electromagnetic characteristic band. The delay absorption layer and the reverse phase shift guide chain are arranged in a signal path, so that layered energy absorption and reverse phase counteracting are realized, electromagnetic pulse propagation is weakened, and false triggering is prevented; and meanwhile, a low-amplitude periodic slip signal is injected into the signal input end, so that the channel frequency generates micro-amplitude wandering, a dynamic self-adaptive anti-interference mechanism is formed, and stable and reliable signal transmission is ensured.
Owner:GETTEL GRP TONGCHENG PLASTIC IND

Industrial full-link through implementation method based on unique identification and double contract anchoring

The application discloses an industrial full-link through implementation method based on unique identification and double contract anchoring, and belongs to the technical field of intelligent manufacturing informatization. The method takes a plan number as a unique and unchangeable identification throughout the full life cycle from raw material warehousing to finished product warehousing, takes a contract hash value as a cross-table association anchor point, adopts a step-by-step anchoring mechanism of sales contract priority binding and procurement contract subsequent binding, and combines batch processing, transaction safety control and full-chain backtracking synchronization technology to realize bidirectional synchronous updating of procurement and sales contract information in full life cycle data tables such as raw material inventory tables and production process quality inspection record tables. The application breaks the strong coupling of the procurement and production processes, supports cost information post-recording, solves the pain points of data disconnection, untraceability, low efficiency and maintenance difficulty of traditional industrial software, has a simple architecture, high performance and stable operation, and is suitable for various intelligent manufacturing systems such as MES and ERP. The application has been applied in actual industrial scenes and has industrialization popularization capability.
Owner:HANDAN DINGSHENG DIGITAL INTELLIGENCE TECHNOLOGY CO LTD

Feed coupling mitigation strategies for the realization of ultrawideband feed arrays

Wideband antenna elements exhibit strong coupling when formed into an array, which normally degrades the impedance bandwidth, radiation pattern, and efficiency of the feed antennas. Various methods are provided herein to mitigate or reduce this coupling. For example, designing an array such that not all antennas support the lower frequency operation mitigates coupling at low frequencies where coupling is most significant. Alternatively, embedding the feeds into a high-refractive-index medium increases the electrical distance between feeds while the physical separation is kept constant.
Owner:CHESHIR IND INC

Mems gyroscope and electronic product technical field

The present invention provides an MEMS gyroscope and an electronic product. The MEMS gyroscope comprises a plurality of first mass blocks, a second mass block and coupling parts, wherein the plurality of first mass blocks are located at two opposite sides of the second mass block in a first direction; and each coupling part comprises a coupling link and a plurality of connecting beams connected to two ends of the coupling link, the connecting beams are flexible beams, and the coupling part is positioned between the first mass blocks and the second mass block and connects the first mass blocks with the second mass block. Through the arrangement of the coupling links, strong coupling can be realized between the first mass blocks and the second mass block, so that the anti-interference performance of the MEMS gyroscope is enhanced during work and the working stability is improved.
Owner:AAC KAITAI TECHNOLOGIES (WUHAN) CO LTD

A method for optimizing process parameters in VCSEL epitaxial wafer manufacturing

This invention belongs to the field of semiconductor device manufacturing process control technology, specifically relating to a method for optimizing process parameters in VCSEL epitaxial wafer production. The method includes: constructing a multi-loop PID control system based on process parameters and key quality indicators during VCSEL epitaxial wafer growth; online identification of the ARX model during PID control system operation; calculation of the steady-state process gain matrix characterizing the steady-state causal relationship of the system; identification of the coupling direction based on the sign of the steady-state gain; and calculation of the antagonistic coupling strength factor and the cooperative coupling strength factor. The PID controller gain is then dynamically adjusted to achieve control of the epitaxial wafer growth process. This invention improves the response speed and robustness of each control loop while ensuring the overall stability of the multivariable control system, effectively reducing layer thickness and composition fluctuations caused by parameter drift and strong coupling during VCSEL epitaxial wafer growth, and improving the growth accuracy of the epitaxial wafer.
Owner:WAFERCHINA CO LTD

Optimization design method and system for concrete pole reinforcing module

The invention discloses an optimal design method and system for a concrete pole reinforcing module, and the method comprises the steps: compressing a multi-parameter strong-coupling high-dimensional design quantity into a low-dimensional controllable vector, and reserving an inheritable stable substructure; establishing a rule follow-up and boundary contraction mechanism by taking the key indexes as leading, forming a stable feasible region, and aligning discrete specifications and cost; cooperation of in-grade small-step fine trimming and cross-grade large-step search is realized on the basis of a standard genetic algorithm, and boundary wandering and oscillation are suppressed through threshold sensing shaping.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD SUZHOU BRANCH

Distributed cooperative approximation control method and system for strong coupling central air conditioning system

This application relates to the field of building equipment automation and intelligent control technology, and in particular to a distributed collaborative approximation control method and system for strongly coupled central air conditioning systems. The system includes: an equipment-level control module that establishes a local control model or optimization model based on historical operating data and real-time operating status of the equipment; a coordination layer control module that constructs and publishes coordination state variables as a virtual coordination medium to address system-level coupling constraints in the central air conditioning system; and a system-level evaluation module that collects control decisions or representation information from each equipment-level control module and evaluates the degree of satisfaction and changing trends of system-level coupling constraints. This application, by using coordination state variables as a unified coordination medium, drives each device to collaboratively iteratively approach the global optimal solution under a distributed architecture. This effectively achieves optimal overall performance and stable operation of the central air conditioning system under scenarios of heterogeneous equipment, conflicting operating objectives, or tense system constraints.
Owner:SHENZHEN UNIMAT AUTOMATION TECH

Dual-axis gyroscope and electronic device

The application provides a dual-axis gyroscope and an electronic device. The dual-axis gyroscope comprises a first mass block, a second mass block, a driving device and a detection device. The first mass block can swing in a first plane around a first anchor point, and the first mass block can swing around a first central axis of the first anchor point; the second mass block can swing in the first plane around a second anchor point, and the second mass block can swing around a second central axis of the second anchor point; a plurality of first mass blocks are distributed along a second direction, a plurality of second mass blocks are distributed along the second direction, adjacent first mass blocks are connected through first coupling connecting rods for strong coupling, and adjacent second mass blocks are connected through second coupling connecting rods for strong coupling. The accuracy of the displacement ratio of the first mass block and the second mass block is improved, and the working accuracy and stability of the dual-axis gyroscope are improved. Meanwhile, the requirement for the machining precision of the first mass block and the second mass block is reduced, and the machining cost of the dual-axis gyroscope and the electronic device is reduced.
Owner:AAC KAITAI TECHNOLOGIES (WUHAN) CO LTD

Intelligent forklift and control method thereof

The invention discloses an intelligent forklift and a control method thereof, and belongs to the field of forklift control, according to the scheme, the dominant frequency offset rate and the total harmonic distortion rate are analyzed according to the physical characteristics of strong coupling of the rigidity and the vibration mode of a cargo stacking body, and therefore the hidden risks of interlayer looseness and slippage of cargoes are judged in advance; the lag limitation of traditional dominant tilt detection is broken through; in addition, through median filtering, low-pass filtering and self-adaptive noise cancellation, forklift bumping and motor interference can be accurately separated, a pure cargo vibration signal is extracted, misjudgment inducements are eliminated, and the judgment accuracy is improved.
Owner:ANHUI UNIV OF SCI & TECH

Low-frequency filter tap coupling enhancement structure

The invention discloses a tap coupling enhancement structure of a low-frequency filter, and belongs to the field of filters. A low-frequency filter tap coupling enhancing structure comprises a cavity and further comprises an input connector and an output connector which are arranged on the two sides of the cavity, an input core rod is arranged at the end, arranged in the cavity, of the input connector, and an output core rod is arranged at the end, arranged in the cavity, of the output connector; the two port resonance columns are arranged in the cavity, copper sheets are arranged on the two port resonance columns, and the two copper sheets are matched with the input core rod and the output core rod respectively; the middle resonant column is arranged in the cavity, and the middle resonant column is arranged between the two port resonant columns; according to the invention, the copper sheet is closer to the cover plate as far as possible, so that super-strong coupling is realized, the design is simple, the consistency is high, the simulation efficiency can be improved, the stability, the consistency, the reliability and the operability are improved, the cost is low, the debugging is convenient, and the like.
Owner:SUZHOU NUOTAIXIN COMM CO LTD

Thermal management and signal integrity co-optimization method in three-dimensional package

PendingCN122287548AHeat fluxThermodynamics
This invention provides a method for co-optimizing thermal management and signal integrity in 3D stacked packaging, relating to the field of 3D stacked packaging. The method involves acquiring heat source and signal path data, calculating the temperature field and heat flux density, identifying the intersections of thermal and electrical paths, and calculating time delay offsets. It then quantifies the thermal-electric coupling strength, filters out strong coupling locations, iteratively offsets the signal path along the vertical direction of the heat flux density gradient to weaken the coupling, and finally re-lays out the signal path and adjusts the vertical interconnects. This achieves the effect of simultaneously optimizing heat dissipation and signal integrity in 3D stacked packaging.
Owner:XINQIAO (BEIJING) SEMICONDUCTOR CO LTD

A pipe manufacturing process scheduling intelligent import execution management and control system

This invention discloses an intelligent import and execution control system for production scheduling in pipe fitting manufacturing processes. This invention relates to the field of intelligent manufacturing of pipe fittings and digital control technology for industrial production. It includes a production management module, a planning and scheduling module, a production MES module, a hardware SCADA monitoring module, and a quality management module. It also includes a digital twin mapping base for the entire pipe fitting manufacturing process, a multi-dimensional cross-validation and cyclical convergence module, a strongly coupled multi-objective dynamic iterative scheduling module for pipe fitting processes, and a dynamic closed-loop linkage module for execution, quality, and production scheduling. This intelligent import and execution control system for production scheduling in pipe fitting manufacturing processes, through a multi-dimensional cross-validation and cyclical convergence mechanism, achieves the coupling and adaptation of the optimized production schedule with pipe fitting process requirements, equipment capacity, and material supply cycles. It replaces the single basic data verification mode of existing technologies, avoiding the problem of mismatch between production schedules and on-site production capacity from the source.

Intelligent anti-swing control method and system for a bridge crane

The application relates to the technical field of crane control, in particular to a bridge crane intelligent anti-swing control method and system, which specifically comprises the following steps: a dynamic model of a bridge crane is constructed, including a single pendulum model and an elastic damping model established based on Lagrange equations; a strong coupling adaptive sliding mode controller is designed; the controller is based on state errors to construct a composite signal and a deviation signal, and a sliding mode surface is designed according to the composite signal and the deviation signal, so that trolley displacement tracking and load swing angle suppression are realized; through establishment of a comprehensive dynamic model containing elastic damping, the dynamic characteristics of solid and liquid loads are accurately described, and the adaptability of the model to complex working conditions is improved. Secondly, the strong coupling adaptive sliding mode controller is designed to realize the cooperative control of trolley displacement tracking and load swing angle suppression through construction of a composite signal and a novel sliding mode surface, and residual swing after reaching the position is effectively eliminated.
Owner:浙江振兴阿祥集团有限公司

A power output control method of a narrow-space angle hitting plunger

The application discloses a power output control method of a narrow-space angle-of-deflection hitting plunger, and relates to an industrial automatic control system. In view of the strong coupling disturbance problem of mechanical stick-slip and electromagnetic magnetic resistance distortion caused by narrow-space angle-of-deflection hitting, the method calls a reference model containing a preset angle-of-deflection disturbance term as a feedforward basis; real-time acquisition of electrical signals obtains characteristic distortion points as closed-loop feedback variables; a double-time-scale extended state observer is run to solve the state, dynamically observe displacement and transient lateral friction resistance; based on the observed resistance, sub-self-locking criticality is determined, and in the low-power flexible contact mode, high-frequency alternating current micro-jitter excitation signals are actively injected into the driving waveform for power compensation. The application realizes cross-disciplinary disturbance decoupling under the condition of no sensor, changes passive confrontation into active breaking of static friction locking, completely eliminates the card stagnation and thermal runaway caused by blind overload, and significantly improves the hitting accuracy and device life under extreme working conditions.
Owner:SUZHOU CHANGZHI PRECISION MASCH CO LTD

Whole-body cooperative jumping control method for quadruped robot with mechanical arms

The invention discloses a whole-body cooperative jumping control method for a quadruped robot with mechanical arms, and belongs to the technical field of robot control. The strong coupling effects of a machine body, a mechanical arm, an air phase and an impact phase are integrated into the same model, and the real-time influence of the action of the mechanical arm on the mass center and inertia of the whole machine is quantified; by implementing impact buffering and posture maintaining, the unbalance risk during landing is reduced; the dynamic conflict is reduced by implementing coupling compensation; a whole-body cooperative jump control strategy is precisely guided from the air to landing stable buffering and then to global cooperative compensation, and a complete jump control closed loop is constructed; coupling disturbance is counteracted through feed-forward compensation, real-time errors are fed back and corrected, and the trajectory tracking precision can be effectively improved; through landing impact phase self-adaptive feedback gain adjustment, the attitude oscillation amplitude can be effectively reduced, and the robot is prevented from toppling over; the compound control is combined with the predictability of feedforward and the fault tolerance of feedback.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

Electric energy transmitting assembly and wireless electric energy transmission system

The invention discloses an electric energy transmitting assembly and a wireless electric energy transmission system, and relates to the technical field of wireless electric energy transmission, the electric energy transmitting assembly comprises a first coupling coil and a second coupling coil, the second coupling coil is connected with the first coupling coil, and the circle centers of the second coupling coil and the first coupling coil coincide; an included angle is formed between the normal of the second coupling coil and the normal of the first coupling coil. The first coupling coil and the second coupling coil can be connected to a high-frequency inverter in parallel, the high-frequency inverter can control current of the first coupling coil and the second coupling coil and achieve vector synthesis of a magnetic field, and the magnetic field can conduct wireless electric energy transmission with a receiving coil. By independently controlling the annular and polar magnetic field intensities of the first coupling coil and the second coupling coil, strong coupling and weak coupling of the receiving coil can be realized, so that the stability of electric energy transmission is improved, stable receiving of electric energy can also be realized when the receiving coil moves within a certain range, and the anti-offset capability is strong.
Owner:WUHAN INSTITUTE OF MARINE ELECTRIC PROPULSION (THE 712TH RESEARCH INSTITUTE OF CHINA STATE SHIPBUILDING CORP LTD)

A reversing manipulator for an automatic robot loading system

This invention belongs to the technical field of reversing robotic arms for loading systems, specifically an automatic robotic loading system reversing robotic arm, including a robotic arm mechanism. The robotic arm mechanism is placed on the ground and is used to drive the reversing mechanism and the lifting and pushing mechanism to perform reversing operations. The upper end of the robotic arm mechanism is connected to the reversing mechanism. The reversing mechanism and the robotic arm mechanism cooperate to realize the swing-type reversing operation of the material. The bottom of the reversing mechanism is connected to the clamping mechanism. This invention realizes the independent execution and arbitrary combination and coordinated linkage of reversing actions at each level, thereby completely eliminating the industry pain points of traditional loading robotic arms, such as single reversing dimension, inability to take into account large-angle cross-workstation conveying and precise stacking in the carriage, and strong coupling between reversing and attitude adjustment, which easily leads to material tilting and slipping.
Owner:青岛智森达智能科技有限公司

Thickness and tension self-adaptive decoupling control method and system in rolling process

The invention discloses a thickness and tension self-adaptive decoupling control method and system in the rolling process, and relates to the technical field of metal rolling automatic control. The method aims at solving the problems that in the rolling process, a strong coupling effect exists between a thickness control system and a tension control system, and a traditional decoupling method is difficult to adapt to dynamic working conditions. The method comprises the steps that real-time working condition parameters in the rolling process are obtained; dynamically determining a decoupling compensation amount through a self-adaptive decoupling controller based on the real-time working condition parameters and a thickness-tension coupling relation model; and carrying out feedforward compensation on a thickness control system and a tension control system by using the decoupling compensation amount. According to the method, by dynamically determining the decoupling compensation amount and conducting feedforward compensation, mutual interference between control loops can be actively and accurately offset, working condition changes are tracked in real time, and the working condition adaptability and robustness of the system are enhanced, so that the thickness control precision and the tension stability are remarkably improved, and the product quality and the production efficiency are improved.
Owner:ZHAOQING HONGWANG METAL IND

A double-acting module

The application relates to a double-mover module, belonging to the technical field of linear modules. The module comprises a shell, a first mover and a second mover symmetrically arranged, and a first driving unit and a second driving unit independently driven. The two movers are mounted on the shell along the same sliding path and are respectively controlled in movement by the independent driving units. The design solves the strong coupling problem of mover movement caused by a single driving source in the prior art double-mover module, and overcomes the defects that the position, speed and acceleration of the mover cannot be independently adjusted. Through decoupling control of the double driving units, the dynamic interference between the movers is significantly reduced, so that the system can maintain stability and positioning accuracy when the load suddenly changes.
Owner:东莞市泰品智能科技有限公司

Shortening design method for high-speed inner turning inlet duct based on virtual center body

ActiveCN122046552BShock waveLeading edge
The application provides a high-speed internal turning inlet shortening design method based on a virtual center body, which comprises the following steps: step 1, designing a virtual center body reference flow field; step 2, designing a capture profile; step 3, determining an internal turning inlet profile by using a stream line tracking method; step 4, setting a blunted leading edge; step 5, optimizing the internal turning inlet flow field; and step 6, scaling the virtual center body internal turning inlet in proportion according to actual capture flow requirements. The method proposes the concept of a virtual center body, and introduces the idea of a variable center body in order to weaken the intensity of reflected shock waves, thereby solving the problem of strong coupling between shock wave angle and inlet length in the previous internal turning inlet design method. Compared with the traditional internal turning inlet shortening method, the method can shorten the inlet length and improve the total pressure recovery coefficient of the throat under the condition of the same capture flow.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Low-harmonic strong coupling permanent magnet hollow compensated pulse generator

The application discloses a low-harmonic strong-coupling permanent-magnet hollow compensation pulse generator, which comprises a stator and a rotor arranged in sequence from outside to inside, and the rotor comprises a cage rotor compensation assembly; the cage rotor compensation assembly comprises two sets of symmetrically distributed cage rotor compensation windings; each set of cage rotor compensation windings comprises a plurality of bars arranged in bar grooves of the rotor; the bars form a plurality of pole number structures, and adjacent pole number structures are arranged at intervals; the bars of each set of cage rotor compensation windings are connected in a mode from both sides to the middle or from the middle to both sides; two bars connected in each group are connected through end rings; and a starting end bar and an ending end bar are connected to form a closed loop. The cage rotor compensation assembly compensation structure specially designed in the application not only has the advantages of a solid squirrel cage structure, high mechanical strength and suitability for high-speed operation, but also has the advantages that a winding type winding can be flexibly designed according to pole pairs of the motor, and the rotor harmonics can be effectively controlled.
Owner:HEFEI UNIV OF TECH

High-position jacking method and system

The invention relates to the field of household kitchens, and discloses a high-position jacking method and system.The high-position jacking method comprises the following steps that investigation is established, specifically, the environment of a construction area and a protected building structure are investigated, construction information is formed, and a strong coupling disturbance model is established according to the construction information; construction is divided, specifically, jacking subareas and road routes are planned according to the construction information, the protected building is reinforced and temporarily fixed, and a construction area is formed; and a jacking test is conducted, specifically, a jacking bearing system is built in the construction area, test jacking verification is conducted based on the strong coupling disturbance model, parameters and control parameters of the jacking bearing system are corrected, and jacking data are obtained. A strong coupling disturbance model capable of comprehensively describing foundation viscoelastic creep, hydraulic system nonlinear fluctuation and environment wind load coupling effect is established through investigation, control parameters are optimized in real time in combination with disturbance prior information provided by the strong coupling disturbance model in the jacking process, and controllability of building postures in a large-creep-distance jacking scene is achieved.
Owner:SHANGHAI CONSTRUCTION FIRST CONSTRUCTION (GROUP) CO LTD

Motor structure with active noise suppression function and implementation method

The application discloses a motor structure with active noise suppression function and an implementation method, and belongs to the technical field of permanent magnet synchronous motors. The motor comprises a stator, a rotor and a plurality of independent power supply sectors arranged on the stator, each sector is configured with a three-phase winding, and each sector can be independently started and stopped and dynamically adjust the power supply state. Based on the coupling mechanism of electromagnetic force and structural mode, the dominant vibration mode and the corresponding frequency interval that may cause resonance are identified according to the electromagnetic force harmonic and the structural mode space characteristics under different rotating speed and torque conditions during operation; by actively controlling the number and spatial arrangement mode of the sectors, the electromagnetic force harmonic that is strongly coupled with the structural mode is avoided, so that the electromagnetic noise is effectively suppressed. The application dynamically adjusts the power supply strategy, significantly reduces the operating sound pressure level while ensuring the output performance, and has good practicability and popularization value.
Owner:SOUTHEAST UNIV

Wide waveguide high coupling efficiency silicon nitride micro-ring resonator cavity structure and design method thereof

The application discloses a wide waveguide high-coupling-efficiency silicon nitride micro-ring resonant cavity structure and a design method thereof. The structure comprises a SiO2 substrate, a Si3N4 micro-ring cavity etched above the SiO2 substrate, a Si3N4 Gaussian filter mode pulley coupler and a SiO2 upper cladding layer. The Si3N4 micro-ring cavity is composed of a ring waveguide and an adiabatic shrinkage conical filter mode waveguide narrowed from the ring waveguide, the width of the adiabatic shrinkage conical filter mode waveguide changes with the position and satisfies a Gaussian function; the width of the narrowest part of the adiabatic shrinkage conical filter mode waveguide is such that only a basic mode exists in the ring waveguide and the adiabatic shrinkage conical filter mode waveguide; the Gaussian filter mode pulley coupler is arranged in a coupling area of the micro-ring resonant cavity as a coupling waveguide, and the radius change of the Gaussian filter mode pulley coupler and the width change of the adiabatic shrinkage conical filter mode waveguide satisfy the same Gaussian function. The application can realize a high quality factor, enhance the coupling effect and ensure a single mode condition.
Owner:BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA

Miniaturized Beidou anti-interference array antenna with low mutual coupling

The antenna comprises an antenna dielectric plate, a radiator array, a metal ground, a decoupling structure, a low-noise amplification module, an anti-interference integrated module and a complete machine protection structure, the decoupling structure is composed of an antenna ground decoupling structure and a ferrite wave absorber, and the space of the antenna ground decoupling structure and the space of the ferrite wave absorber are precisely overlapped. And a'blocking + absorbing 'dual decoupling mechanism is formed. The antenna ground decoupling structure is etched on the metal ground to block ground current so as to suppress electric coupling; the ferrite wave-absorbing body is embedded into a strong coupling area of the antenna dielectric plate to absorb near-field magnetic energy so as to suppress magnetic coupling. Under the compact layout that the array element spacing is smaller than or equal to 0.35 lambda, the actually measured isolation between the array elements is smaller than or equal to-25 dB, the radiation efficiency is larger than or equal to 65%, the axial ratio is smaller than or equal to 3 dB, the ideal null-null value of the array is increased by 10 dB or above, the overall section height is smaller than or equal to 10 mm, and the problem that low mutual coupling, miniaturization and high radiation performance are difficult to consider is effectively solved.
Owner:BEIJING TIANHAIDA TECH CO LTD

Transition circular ring used for dissimilar material connection and having thermal stress reduction and vibration isolation functions

The invention discloses a transition circular ring used for dissimilar material connection and having thermal stress reduction and vibration isolation functions, the transition circular ring is connected with a first material element through an inner hole and connected with a second material element through an outer hole, the transition circular ring is of a solid integrated plate-shaped structure, and a plurality of through hole grooves penetrating through the thickness direction of the transition circular ring are formed in the transition circular ring; the through hole grooves are formed in the areas, in strong coupling with a second material, close to the outer holes, the inter-hole ligament areas between the adjacent outer holes and the annular belt areas between the inner holes and the outer holes, the transition circular ring after the through hole grooves are formed still keeps circumferential closed-loop continuity, and the through hole grooves absorb thermal strain generated by the difference of linear expansion coefficients of different materials through local micro-deformation. And meanwhile, as a vibration decoupling interface, transmission of vibration energy between the inner hole ring and the outer hole ring is inhibited by reducing radial transmission rigidity and increasing structural damping. While thermal stress is greatly reduced, effective isolation of micro-vibration is achieved, and the coaxiality and stability of a precise instrument under complex working conditions are guaranteed.
Owner:NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE