106results about How to "High engineering value" patented technology

A large-dip-angle orbiting satellite solar panel orientation method under simple posture control includes the steps that firstly, a satellite centroid orbit coordinate system, a spacecraft body coordinate system and a geocentric equatorial inertia coordinate system are built, the included angle between sunlight and the normal of a satellite orbital plane is obtained, then the included angle is judged, a satellite solar panel is controlled to rotate according to different included angles, the direction of a rotary shaft of the satellite solar panel is adjusted, and large-dip-angle orbiting satellite solar panel orientation control is finished. The method overcomes the defects that in the prior art, in order to meet the requirement that sunlight is perpendicular to a satellite solar panel, the satellite yaw angle of a satellite with a single-degree-of-freedom solar panel driving mechanism is controlled all the time, rotation speed of the solar panel is large, and stability of satellite effective loads is not benefited. Three solar panel orientation adjustment modes are designed according to the angle theta between the vector direction of sunlight and the normal direction of a satellite orbit to meet orientation requirements of a large-dip-angle orbiting satellite solar panel, and the method has the advantages of being high in load stability and easy to operate.

The invention relates to a non-cooperative target relative navigation motion estimation method and system based on multi-source information fusion. The method comprises the following steps of: givinga joint calibration method of a laser and visual measurement system, obtaining the reprojection information of a laser scanning point cloud in camera coordinate system based on the joint calibration system, respectively acquiring the depth compensation information of the target point and the compensated depth information by using a quadratic interpolation method, realizing information fusion between the laser scanning point cloud and the vision camera image, and finally acquiring the motion estimation of the target on the basis of the fusion information. The method provides a fusion method ofinformation of a vision camera and a laser scanner. The high precision depth information of the laser scanning point cloud can be used to compensate for the poor accuracy of the visual image in the depth direction, meanwhile, the defect of low resolution of laser scanning is avoided and the high precision of laser scanning depth information and high image resolution of visual measurement system are integrated. Meanwhile, the interpolation calculation method of information fusion is a simple algebraic operation, which is easy for engineering realization and application.

The invention discloses a method for implementing roaming restriction to a VoWiFi (Vocie Over WiFi) voice service. According to the method, when a user registers to an IMS (IP Multimedia System) network by a WLAN (Wireless Local Area Network) access network, the user can be independently and flexibly controlled whether to use the VoWiFi service according to the position or type of the access network where the user is positioned, thereby implementing roaming restriction to the VoWiFi (Vocie Over WiFi) service of the user. Furthermore, a control opportunity of the method occurs in a stage that the user initially registers to the IMS network, subsequent interaction of a great quantity of invalid signals is avoided, a network signaling load can be effectively reduced, and the method has a high construction value.

Disclosed is an accurate tester of a superconductive-bulk magnetic-repulsion under a micro gap and a test method thereof. The tester mainly includes a double-driving mechanism, a permanent-magnetic chuck, a superconductor chuck, a liquid nitrogen cup, an optical grating displacement sensor and an S-shaped tension and pressure sensor. The tester adopts a double-driving method, a closed-loop control system and high-precision sensors to realize accurate positioning of a superconductive bulk and accurate measurement of a magnetic repulsion. The chuck structure realizes adaptive adjustment of a parallel degree of the permanent magnet-superconductor pair. The tester realizes 1mum measurement and positioning precision and 0.1 mum testing resolution so that blanks in measurement instruments of the magnetic repulsion of a superconductor bulk in the range of a micrometer gap are filled and thus testing demands for a kinematic pair / friction pair design in a micro gap in a maglev bearing can be met, and the tester has the advantages of being high in measurement precision, high in resolution and moderate in cost and the like and is worth adopting and popularizing; and the tester can also be used as a serialization product and used for teaching and scientific research of graduate students. The testing method has the advantages of being high in measurement precision, simple, convenient and practical and wide in applicable range and the like.

The invention belongs to the technical field of relay protection of a power system and particularly relates to a single-phase grounding distance protection system and method on the basis of voltage phase comparison. The system comprises a data reading module, a protection calculating module and a protection action module which are sequentially connected. The method comprises the following steps: firstly, calculating and measuring an included angle between a current and a fault voltage by using a relationship of a negative-sequence current phase at the protection mounting position and a negative-sequence current phase at a fault point; respectively calculating phase angles of a fault point voltage and a compensating voltage by using the measured voltage as a reference value; finally, according to the phase difference of the fault point voltage and the compensating voltage when an in-area or out-area fault occurs so as to construct a distance protection criterion. The single-phase grounding distance protection system has excellent resistance to transition resistance; the in-area and out-area faults can be correctly judged regardless of the transition resistance; meanwhile, protection action time and a fixed-value error meet the technical requirements of the grounding distance protection, the calculated amount is small and the single-phase grounding distance protection system has a higher practical engineering value.

The invention discloses a direction chart measuring system and method suitable for an antenna in half space environment. The direction chart measuring system and method suitable for the antenna in thehalf space environment comprises a carrier platform, and a to-be-test antenna, and a positioning measuring apparatus; the to-be-test wire on the carrier platform is located in the half space environment, and signals used for measuring is radiated by the to-be-tested antenna; the positioning measuring apparatus is used for measuring electric field information of the to-be-test wire on the near field hemispherical surface with a specific semi-diameter, based on the electric field information, spherical surface wave expansion coefficient is obtained through a spherical surface near and far fieldtransformation algorithm, and a radiation pattern is obtained according to the spherical surface wave expansion coefficient; and compared with traditional microwave anechoic chamber measurement, andaccording to the direction chart measuring system and method suitable for the wire in the half space environment, the antenna near field measuring in outer field environment (for example, ground) is conducted so that electromagnetic radiation measurement can be conducted to the to-be-tested antenna in a real environment, a research is conducted to an actual working state of the wire, and the measuring system and method has a great engineering value.

The invention relates to an under-actuated spacecraft three-axis attitude stabilization control method, which designs a controller realizing three-axis attitude stabilization through a two-axis attitude control flywheel in allusion to under-actuated spacecrafts only capable of outputting two-axis control moment. The method comprises the steps of establishing an attitude kinematical equation on the basis of Rodriguez parameters and an attitude kinetic equation in an inertial system; simplifying and organizing the overall system into a Brockett double-integrating system, acquiring a linear control system with controllable system state by adopting sigma conversion and according to whether a starting condition is zero or not, designing a control law to complete the state stabilization of the system, and achieving the purpose of spacecraft three-axis attitude stabilization control. The method provided by the invention can realize three-axis attitude stabilization control when an under-actuated spacecraft only has a two-axis attitude control moment output capacity. Compared with an existing under-actuated control method, the design method provided by the invention is simple, intuitive and easy to implement on stars, and can be applied to three-axis attitude stabilization control of various under-actuated spacecrafts adopting the flywheel.

The invention provides a method for testing partial discharge of suspended particles in flowing transformer oil. The method comprises the following steps that 1) a transformer oil pretreatment and vacuum injection process is performed; step 2) a transformer oil circulation heating and hydraulic stabilizing process is performed; step 3) a partial discharge withstand voltage process of the flowing transformer oil is carried out; step 4) the initial voltage of partial discharge of the flowing transformer oil containing the suspension particles is determined; step 5) the test conditions are changed and the partial discharge signal data is acquired; and step 6) the discharged transformer oil is abandoned and the circulating oil path is cleaned. According to the method, various test conditions are considered, the test conditions are strictly controlled, and the actual environment conditions in the transformer are really simulated; and by adopting the test method, the test process can be accelerated, the time cost can be lowered, the partial discharge of the suspension particles can be really and reliably measured, and the method has relatively high practical engineering value.

The invention belongs to the field of four-rotor unmanned aerial vehicle navigation and control, and aims to solve the problem of positioning and navigation of a four-rotor unmanned aerial vehicle in a GNSS denial environment. The position of the anchor point in a world coordinate system can be accurately obtained on line. The invention discloses a visual inertia tight coupling odometer based on UWB online anchor points and a metering method. A radio wave distance measuring module UWB made of an ultra-wideband technology obtains the distance between two modules according to a TW-ToF measuring principle, and after part of noise is filtered out through an outlier detection unit, the distance is used as input to be sent into a tight coupling optimization unit; an IMU inertial measurement result is also used as an input to be sent into the tight coupling optimization unit; and an embedded airborne processor utilizes the tight coupling optimization unit to process the distance measuring value between the UWB modules, the IMU measuring value and the binocular camera measuring value, and the position and attitude information of the unmanned aerial vehicle is analyzed in a tight coupling optimization mode. The method is mainly applied to four-rotor unmanned aerial vehicle navigation and control occasions.

A plastic rubber precision shaping multiprocessor control system, which comprises a host computer at the center of the multiprocessor system, an annular industrial Ethernet chain circuit with industrial abundant character, and a plastic rubber shaping device provided with an independent PLC controller, mounted on the node of annular industrial Ethernet and connected with the Ethernet chain circuit, to form a multiprocessor control system with the central control host computer. The invention is characterized in that each plastic rubber shaping device is connected with the annular industrial Ethernet via an intelligent Ethernet exchange module, the data and control signal exchange of the whole annular industrial Ethernet is realized by an Ethernet exchanger at the center of the annular industrial Ethernet, and the whole shaping process is detected by the configuration detection software of the central host computer.

The invention discloses a core electric heating system design method of a natural circulation and forced circulation loop system. The method includes design of a single electric heating element in a core analog, simulation of a box of fuel assembly and structure and assembly of the fuel assembly analog. The method accurately simulates the hydraulic nuclear heat release of the prototype according to the design parameters and functional requirements of the natural circulation and forced circulation experimental loop; the experimental data can reflect the relative characteristics of the prototype reactor, in order to achieve the purpose of research of the prototype hydraulic characteristics. The method employs lowering height simulation to easily implement the experimental device; the physical dimension of the channel is consistent to that of the prototype, so as to reduce the flow distortion; a box of fuel component analog is divided into four zones, which are connected end to end to form a series circuit, so as to increase the resistance, realize current and voltage matching in DC electric heating. The method can improve the safety and reliability of the design of a passive residual heat removal system, and has high value in engineering application.

The invention discloses an oil field waste heat utilization system based on absorption refrigeration. The oil field waste heat utilization system based on absorption refrigeration comprises an absorption refrigeration system and a supercritical carbon dioxide power generation system, wherein a refrigerant solution and refrigerant steam in an oil field waste heat heating generator exchange heat with a supercritical carbon dioxide working medium in a supercritical carbon dioxide power generation system in a condenser; the working medium absorbs heat so as to be warmed to enter a turbine for working through expansion, is connected with a power generator for generating power, and is then cycled through a supercritical carbon dioxide cooler and a supercritical carbon dioxide compressor; and therefrigerant solution enters an evaporator through an expansion valve, is evaporated to absorb heat so as to produce cold water for an air conditioner, is then mixed with a low-concentration refrigerant solution in an absorber so as to recover a high-concentration refrigerant solution state, and returns into the generator through a solution pump. The invention builds the oil field waste heat utilization system integrating cooling and low-temperature heat source power generation into a whole, the waste heat of oil field waste water is multi-stage utilized, the energy utilization efficiency is improved, and the system is compact in structure and has an important engineering significance.

The invention relates to a complex surface numerical control machining motion analyzing method based on mapping and belongs to the technical field of numerical control machining. The method is characterized in that common complex surface machining is regarded as the combination of micro tapered planes, optional tapered plane machining is machined in a way that a cutter shaft is vertical, a cutter is in translational motion, and a workpiece performs angle swinging, and two basic independent variables including the tapered surface inclination angle and the feeding direction angle are abstracted to complete the parametric expression of common complex surface machining; the tapered surface inclination angle and the feeding direction angle are used as coordinate axes to build abstract plane space, and coordinate transformation is performed on common complex surface machining to build the mapping relation between complex surface machining and the abstract plane space; the relative motion relation of the cutter and the workpiece in common complex surface numerical control machining can be conveniently and systematically analyzed based on the mapping relation. Compared with a traditional differential method, the method has the advantages that the defects that the differential method is passively executed along curve surface shape change and large in computing resource consumption are overcome, and the method is convenient for software integration and actual application and high in engineering value.

The invention discloses a satellite weak signal capturing method and a satellite weak signal capturing system in a high-dynamic low-signal-to-noise-ratio environment. The satellite weak signal capturing device comprises a primary capturing module and a secondary capturing module, which adopt an interpolation frequency calculation method for calculating signals; after successfully capturing the signal, the primary capturing module stops working and sends estimated coarse frequency offset and coarse timing information to the secondary capturing module; and if the primary capturing module successfully captures the signal, a starting signal for starting the secondary capturing module is given, and the secondary capturing module performs secondary frequency estimation and signal arrival verification according to the coarse timing position information given by the primary capturing module and the signal after coarse frequency offset compensation. According to the satellite weak signal capturing method and the satellite weak signal capturing system, the primary capturing module is used for rapidly capturing the frequency spectrum and the position of the signal, calculating the coarse frequency spectrum and the coarse position of the signal, and carrying out capture verification and frequency fine estimation on the signal according to the secondary capturing module; and the satellite weak signal capturing method and the satellite weak signal capturing system improve the estimation precision, can be applied to various receivers, and have high engineering value.

A robust control method for angular speed stability of an under-actuated spacecraft aims at the under-actuated spacecraft with two thrusters, and the angular speed stability control law having robustness for generalized model errors of a system is designed. First a system model comprising the generalized model errors is established, and a system dynamics equation comprising the generalized model errors such as system inertia uncertainty, executing mechanism installing errors and angular speed measuring errors is obtained. Then the robust control method aiming at the derived system is designed, and global asymptotic stability is proved. Finally, a conception of a homogeneous system is introduced, and the fact that the control law enables the global asymptotic stability of an original system is analyzed and proved. The method provides a theory basis for the under-actuated spacecraft for practical engineering application, and the control law is simple in form. The robust control method can be used for robust control for angular speed stability of various under-actuated spacecrafts for which the thrusters are adopted.

A special tool for overhead line hanging object laser cutting comprises a trolley; a rotary disc is arranged on the trolley; a laser is arranged on the upper surface of the rotary disc; the external side of a laser lens of the laser is connected with a casing; a position of the casing, which is arranged at a laser lens position, is provided with a through hole; a position inside the casing, which is arranged on one side of the through hole, is provided with a guiding column; a focusing lens is arranged inside the casing; one side of the focusing lens is provided with a first motor; a transmission shaft of the first motor is connected with a first screw; the other side of the focusing lens is provided with a first nut. When the special tool for overhead line hanging object laser cutting is applied to de-icing operation, the first motor drives the first screw to rotate to enable the size of laser spots of the laser to get larger to enable ice blocks to be melted uniformly and an electric wire is avoided from burning out caused by excessively small laser spots of the laser. When the special tool for overhead line hanging object laser cutting is applied to sundry removing, the first motor drives the first screw to rotate to enable the size the laser spots of the laser to get smaller and sundries are cut through the laser spots.

The invention discloses a dual-time-scale control method of an energy storage system in a wind-storage combined power generation, which constructs a two-layer control frame, and in the outer layer control, a reference output of each period of the energy storage system on a large time scale is dispatched based on an optimization theory. In the inner layer control, the outer layer optimization result is the control constraint, which suppresses the high frequency fluctuation of the wind power output on the small time scale. Through the coordination between the internal and external control, the energy storage system can be used to stabilize the fluctuation of wind power output, and improve the grid operation economy and wind power absorbing capacity.

The invention discloses a method and a system for realizing Quality of Service (QoS) parameter control based on an HSS, and a device. The method comprises the steps that: the HSS generates extended user subscription data for a subscriber, so that the user subscription data contains QoS parameters corresponding to different user characteristics; and the HSS transmits the extended user subscription data to a packet data gateway (PGW), so that the PGW adopts the QoS parameters corresponding to the user characteristics for offering QoS service to users. According to the method, the system and the PGW, the user can distinguish different user characteristics under a same APN without adding a PCRF network element, the QoS parameters corresponding to the user characteristics are adopted for offering QoS service, and the complexity and difficulty of operation and maintenance are reduced.

The invention discloses a load recovery optimization method considering a unit state in a system recovery process. Load optimization considering the unit state is established by utilizing a logic preference description language, a nonlinear model of load recovery is established, the model is solved by adopting an artificial bee colony algorithm, and a load recovery line and time considering the unit state are obtained. The method comprises the following steps of: 1, constructing a load optimization grading knowledge base considering a unit state in a system recovery process, 2, establishing aload optimization preference strategy set considering the unit state in the system recovery process, 3, establishing a load recovery optimization model considering the unit state in the system recovery process, and 4, solving the load recovery optimization model by adopting an artificial bee colony algorithm to obtain a recovery line and time of the load considering the unit state in the system recovery process. According to the method, load recovery in the system recovery process can be optimized, important loads are ensured to be rapidly recovered, and a reasonable load recovery scheme is provided.

The invention discloses a speed tracking control method for achieving a stable flight of an airship according to a given speed. The method comprises the steps of generating a forward flight velocity measurement and speed error signal; forming an error-based nonlinear gain entry; measuring a vertical velocity, a pitch angle and a pitch angle rate and building an adaptive term; designing an airship speed tracking control law; approximately simulating the characteristics of an airship pitching channel according to a mathematic model built by the differential equation of the airship pitching channel; and observing data of various states of the airship and drawing a picture by continuously adjusting control parameters, observing a data curve of a transverse flight speed of the airship and analyzing a response effect of constant-speed tracking control, thereby finally determining a group of airship control parameters, and enabling the speed tracking control of the airship to have satisfied dynamic response performance and steady-state response performance.

The invention provides a transformer winding structure inductance calculation method. The method is characterized by comprising the steps: based on winding inductance calculation of an energy perturbation finite element method and based on winding inductance analytical calculation of a transformer nameplate parameter, by modeling and solving an electrical transformer three-dimensional finite element magnetic field, simulating magnetic field distribution in a transformer, and fully considering the influence of a change of the magnetic field on an internal structure parameter of the transformer, especially a magnetic field change caused by an energy change in a winding structure, thereby calculating winding inductance. The method has broad adaptability to materials, boundaries and excitation, is convenient for treating a complex closed field magnetic field in which a plurality of mediums coexists, is helpful for transformer winding parameter identification and fault diagnosis, is quick and accurate in calculation and high in adaptability, and has relatively high engineering value.

The invention provides an antenna housing force thermoelectric integrated analysis method, and the method mainly comprises the following steps: S1, establishing a radome mechanical calculation finiteelement model and an electromagnetic calculation undeformed finite element model; S2, carrying out aerodynamic thermal load solving on the mechanical finite element model established in the step S1; S3, carrying out the aerodynamic load solving on the mechanical finite element model established in the step S1; S4, performing post-processing on calculation results of the S2 and the S3, and extracting node displacement; S5, reconstructing a finite element model in S4 based on Python language; S6, reconstructing the finite element model deformed in S5 based on HyperMesh software to obtain an electromagnetic calculation finite element model, and completing the analysis of the wave transmission performance of the radome under the aerodynamic load; S7, completing electromagnetic medium parametersetting and antenna modeling of the electromagnetic calculation finite element model established in the step S1, completing original-state radome wave-transparent performance analysis, and comparingthe original-state radome wave-transparent performance analysis with the calculation result in the step S6.

The invention discloses an air-based rail detection method based on an attention enhancement mechanism, belonging to the field of aviation surveillance. The method comprises the steps that firstly, the high-definition array camera is mounted on the aerial vehicle, and the original image of the railway track is acquired and pre-processed to obtain training samples; the images of the training samples are inputted into the convolutional neural network for feature extraction, and the 16*16 encoded images are obtained, and the attention enhancement is carried out to increase the ability of featureexpression; then the up sampling is carried out on the image after the attention enhancement by convolution neural network to get the same size decision map as the original image, and the decision mapis classified and judged, and a point in the decision map is a point on the rail; and finally, according to the decision result, the network parameters are updated by back propagation using gradientdescent algorithm. On the basis of precise detection, the method of the invention can monitor the surrounding environment of the rail and the safety condition of the rail, has accurate positioning andremarkable effect, and has strong engineering value and practical significance.

The invention provides a radome electromagnetic performance analysis method under a force load. The method mainly comprises the following steps: S1, establishing a radome mechanical calculation finiteelement model, and electromagnetically calculating an undeformed finite element model; s2, adding material attributes to the mechanical finite element model established in the step S1, applying aerodynamic load and boundary conditions, and completing solving of a static problem; and S3, carrying out post-processing on the calculation result of S2, and extracting node displacement. S4, reconstructing the finite element model in S3 based on Python language to obtain a deformed finite element model under aerodynamic load; s5, reconstructing the finite element model deformed in the step S4 basedon HyperMesh software to obtain an electromagnetic calculation finite element model, and completing the analysis of the wave transmission performance of the radome under the aerodynamic load; s6, electromagnetic medium parameter setting and antenna modeling of the electromagnetic calculation finite element model established in the step S1.2 are completed, original-state radome wave-transparent performance analysis is completed, and the original-state radome wave-transparent performance analysis is compared with the calculation result in the step S5.

The invention relates to a PMU measurement-based method for identifying complete parameters of double circuit lines on the same tower of a short line, the PMU measurement-based method comprises the following steps of 1, according to whether a short-circuit same-pole parallel double-circuit line is symmetrical or not, respectively establishing impedance models of short-circuit same-pole parallel double-circuit lines with an in-phase sequence and an out-of-phase sequence; 2, establishing a parameter identification target function of multi-moment PMU measurement based on a least square method; 3,respectively selecting PMU measurements at N moments and N+1 moments, and substituting the PMU measurements into the parameter identification target function established in the step 2 to obtain corresponding parameter identification results alpha N and alpha<N+1>; for the in-phase sequence line, setting an initial value N to be equal to 2; for a non-in-phase sequence line, setting an initial value N to be equal to 4; 4, judging whether alpha N and alpha<N+1> in the step 3 meet the condition that |alpha N-alpha<N+1>| is smaller than or equal to lambda or not, if yes, quitting the cycle, and completing parameter identification; if not, enabling N to be equal to N+1, and executing the step 2 again for recalculation until parameter identification is completed. According to the method, the impedance parameters of the short-circuit same-pole parallel double-circuit line can be accurately and quickly obtained.

The invention discloses an energy efficiency evaluation method and system for a power distribution network containing a distributed power supply, and the method comprises the steps: constructing an energy efficiency evaluation index set of the power distribution network containing the distributed power supply; combining the quantifiable energy efficiency evaluation index set to construct an energyefficiency function between operation input and output of the power distribution network containing the distributed power supply; solving an energy efficiency function based on the super-efficiency model by taking the highest energy efficiency value of each power distribution network as a target; and according to the solved energy efficiency evaluation values, performing full sorting on the evaluation objects to obtain a sorting result of the evaluation objects containing the distributed power supply distribution network. The method has the advantages that the influence of subjective factorson the objectivity of the energy efficiency evaluation result is effectively avoided, the optimal construction sequence of the distributed power supply and the power distribution network is obtained,the input-output ratio is remarkably increased, and the method has high engineering value.

The invention relates to a natural gas pressure regulating station and method for supplying gas to a supercritical circulating fluidized bed boiler, and belongs to the technical field of natural gas application. The natural gas pressure regulating station comprises an inlet main pipe, a filtering and metering unit, a pressure regulating unit, a diffusing unit, an odorizing unit, an outlet main pipe and a sewage discharge pool; the inlet main pipe is connected with the filtering and metering unit; the filtering and metering unit is connected with the pressure regulating unit and the sewage discharge pool; the pressure regulating unit is connected with the outlet main pipe; the inlet main pipe, the filtering and metering unit, the pressure regulating unit and the outlet main pipe are all connected with the diffusing unit; and the odorizing unit is connected with the outlet main pipe. The natural gas pressure regulating station provided by the invention is qualified in test operation, smoothly passes the test of the whole set of starting test operation of the unit and loads at all stages, and is stable and reliable in operation, accurate and stable in pressure regulation of the pressure regulating unit, stable in gas filtration of the filtering and metering unit, small in inlet and outlet pressure difference value and normal in pollution discharge.

A method for analyze a contact stress near a singular point is provided, characterize in that that method comprises the steps of: establishing an initial contact model; The initial contact model is meshed and transformed into a finite element model. Contact pairs are set up and loads and boundary conditions are applied. The mesh of the initial contact model is refined and the displacement of the singularity point is calculated until the displacement converges to 3%. The displacement of the interface node is extracted and output from the calculation results. Constructing high-order displacementfunction; The high-order displacement function is loaded on the contact surface, and the contact between the contact surfaces is no longer set, and the other boundary conditions remain unchanged. Regrid as in Step 3 until the contact stress at the calculated singularity converges to 5%. The new numerical analysis method of the present application can better analyze the accurate value of the contact stress near the singularity and is well applied to the engineering practice.

The invention discloses a coding method of a global coupling low density parity check code. The coding method comprises the following steps: S1, constructing a basis matrix of the global coupling low density parity check code; s2, performing expansion permutation and mask processing on the basis matrix to obtain a check matrix of the global coupling LDPC code; and S3, coding by adopting the check matrix of the global coupling LDPC code. According to the method, the transmission reliability under high-speed channels such as a memory and optical communication is improved, engineering implementation is easy, and the method has the advantages of low hardware cost and high hardware throughput.

The invention discloses a structural topology optimization design method based on a response surface method. The method comprises the following steps: selecting feature sizes which have relatively large influence on total weight as design variables; determining a test center point required for performing response surface test design by adopting the center combination design; generating a sample point data table for response surface optimization, and performing topological optimization; performing response surface fitting on test results obtained by each group of tests; setting a design variable value combination corresponding to a minimum value point in the fitting results as a new sample point, performing topological optimization on a structure corresponding to the new sample point, and substituting the test results into the test results of the original sample point data table to perform response surface fitting again; and obtaining the plane configuration of the optimal structure until the value of the design variable corresponding to the minimum value point in the response surface fitting result does not change any more or is stabilized in the determined small range, thereby realizing the multi-dimensional optimization design of the structure.