44results about How to "Solve strong coupling" patented technology

The invention discloses a public sentiment data real-time collecting method and system based on distribution. The method comprises the following steps that firstly, a public sentiment data website class library is established, and crawling data items are classified and defined; secondly, a data acquisition website list is transmitted to a data collection server, the server allocates corresponding crawlers to circularly crawl data in a dormant mode; thirdly, crawled source webpage data is subjected to label analysis, the position of a target data item is positioned, and the target data item is obtained; fourthly, an obtained result data item is encapsulated into a uniform format of a corresponding class; fifthly, the encapsulated data is stored into a corresponding database; sixthly, a monitoring log file is generated. According to the public sentiment data real-time collecting method and system based on distribution, the architecture is advanced, a factory mode is used as a main design mode of the system, new examples can be quickly generated, system core functions such as browser assess, log generating, data encapsulation, agent setting and queue setting are encapsulated, the expandability and transportability of the system are enhanced, and the reusability of codes and the maintainability of the system are improved.

The invention discloses a high-frequency high-voltage transformer design optimization method based on a genetic algorithm. On the basis of a minimum loss formula of a transformer and the insulation dimension and the iron core shape of the transformer, a mathematical model is established, a genetic algorithm is adopted for optimizing the transformer by taking the number of turns of primary sides and the layer number of secondary sides as optimization variables and taking efficiency as an optimization target, so that the efficiency of the transformer is maximized, the loss of the transformer is minimized, temperature rise is minimized under an equal condition, the leakage inductance and the distribution capacitance of the transformer are fully utilized to participate in the work of a power system to form an LCC (Life Cycle Costs) resonance circuit, and the loss of the transformer is reduced so as to lower the temperature rise. Compared with the prior art, the invention introduces the genetic algorithm, the genetic algorithm exhibits a problem non-relevant quick and random search capability, searches by starting from a group and has the characteristic of concurrency, and a plurality of individuals can be simultaneously compared to greatly quicken optimal solution search speed.

The invention discloses an AC / DC hybrid distribution system grid structure optimization configuration method, which comprises the following steps: S1, constructing a AC / DC hybrid system grid structuredouble-layer optimization model; S2, constructing a probability model of AC and DC load demand, charging pile charging demand, distributed photovoltaic and fan output; 3, generate a feasible configuration scheme of that space truss structure; S4, setting the reference operation mode of the power electronic transformer; S5, Monte Carlo simulation is used to generate the optimal power flow sub-optimization problem under the running scenario until the stop condition of Monte Carlo simulation is satisfied; 6, according to that current sub-optimization termination condition, if it is satisfied, entering step S7, if it is not satisfied, modifying the port control mode of the power electronic transform, and returning to step S5; S7, calculating the total cost of investment construction and operation of the current scheme to check the main optimization objective, outputting a description matrix if the objective requirement is met, and updating the grid configuration scheme if the objective requirement is not met, and returning to step S4.

The invention discloses a DPI (deep packet inspection) method and system. The DPI method comprises the followings steps: 1, information acquisition: a packet, input by a kernel of a network equipment operating system, in a to-be-processed session is received, and information of the packet is read; 2, DPI: the packet is inspected, and a subsequent packet is processed according to inspection results and the condition whether hardware acceleration configuration exists; 3, inspection data submission: the packet inspection results are counted and analyzed and submitted to a data platform for display of inspection and control results. According to the DPI method and system, compiling can be performed according to kernels of different sets of network equipment, the method and the system can adapt to various platforms quickly, the dependence degree on the equipment is reduced, and the problem of high coupling of a DPI module and the network equipment is solved; few resources are occupied, and application of the DPI technology on low-end network equipment is realized; the DPI method and system has the functions of application identification, terminal identification, acquisition of search keywords, URL (uniform resource locator) identification and classification, acquisition of specific information and the like, and wider coverage area and perfect functions are realized.

The invention discloses a method of designing a high-frequency high-voltage transformer for electrostatic dust collection. The method comprises the steps of designing the high-frequency high-voltage high-power transformer, carrying out type selection on materials, applying a particle swarm optimization algorithm to an optimization design of the transformer, and optimizing the high-frequency high-voltage transformer by taking the efficiency as a goal. Compared with the prior art, the particle swarm optimization algorithm is introduced, the transformer can be optimized in characteristics of strong coupling property and dynamic property between the parameters of the transformer, and a method of randomly adjusting the inertia weight is introduced in the particle swarm optimization algorithm at the same time, so that the algorithm optimization efficiency is greatly improved.

The invention belonging to the technical field of microwave antennas discloses a broadband metamaterial unit and a broadband MIMO antenna. A resonant ring unit comprises a resonant ring, a dielectricsubstrate and a metal floor; and the resonant ring includes a circular ring having a slit and a cross structure. The resonant ring unit is applied to the antenna and two types of MIMO antennas are designed. The MIMO antenna has advantages of compact structure, wide bandwidth, and small size.

The invention discloses a waveguide device microwave gas discharge numerical simulation method. According to the method, a microwave gas discharge fluid model in a waveguide structure is built, accurate numerical analysis is performed on electron density, electron fluid velocity and average electron energy during gas breakdown, and accordingly, the law of changing of the electric field intensity and the electron density at different observation positions along with the time in the condition of gas discharge of waveguide devices in different geometric profile complicated structures. The modeling of waveguide devices in any complicated structures can be achieved based on the time domain spectral element method; the generated mass matrix is a block diagonal matrix, and an inverse matrix can be obtained directly, so that the calculation time is reduced greatly; meanwhile, by the aid of the numerical simulation method, the breakdown threshold obtained through electric field distribution and electron density inside the waveguide devices through repeated experiments can be prevented, and accordingly, the design period is shortened, the design cost is saved, and the method is quite applicable to effective simulation design and numerical simulation of waveguide devices with discontinuous structures.

The embodiment of the invention discloses a message modification method and device, equipment and a storage medium. The method comprises the following steps: acquiring a message, wherein the message comprises protocol information; acquiring the key fields of the message, and acquiring the key field matching information by inquiring a key field matching rule table, wherein the key field matching information comprises message modification action information; acquiring a first modification rule conforming to a first protocol in the protocol information and first key field matching information in the key field matching information from preset modification rules, wherein the first modification rule comprises message modification action information; and modifying the message according to the first modification rule and the modification action parameter corresponding to the first modification rule to obtain a modified first message. According to the message modification method and device, the equipment and the storage medium provided by the embodiment of the invention, the flexibility of data packet forwarding processing can be improved.

The invention discloses a prediction and control method for a separation process of a hypersonic aircraft under the action of a two-phase flow field. The prediction method is realized by the followingsteps: discretizing the flow field of a hypersonic aircraft by adopting an overlapping grid method, carrying out equivalent correction on kinetic energy and momentum of the fluid through thrust reverser rocket inner fluid equivalent to air, establishing an N-S equation of the flow field after equivalence, carrying out flow field CFD calculation according to the established N-S equation of the equivalent flow field to obtain the aerodynamic force and moment borne of the separated bodies in the separation process and solving separation motion under different working conditions by utilizing theobtained aerodynamic force and moment borne of the separated body to obtain centroid motion and attitude motion parameters of the separated body, wherein the separated body comprises a front body anda rear body.

The present invention is applicable to the technical field of Android devices, and provides a middleware application method and apparatus. The application method comprises the steps of loading a middleware framework service in an Android system, and starting a functional module in the middleware framework service; binding an application program with the middleware framework service, installing the application program to the middleware framework service, and after finishing installation, starting the application program; and in running of the application program, invoking the functional module that the application program relies on from the middleware framework service, wherein the middleware framework service is an OSGi framework service, and the OSGi framework service is used for implementing running of the OSGi framework in the Android system. According to the method, problems of strong coupling of the middleware and the application program and large load of the Android system in the prior art are solved, and it is ensured that the Android system always runs the OSGi framework service of the highest version.

The invention discloses a heating furnace variable alternate acknowledge overall planning and limit control method and belongs to the technical field of industrial control. A heating furnace control system achieving the method is composed of a combustion system, a branch temperature balancing system and a temperature intelligent compensation system. In each control period, the monitoring index ofeach subsystem is automatically detected, the subsystems operate when Fi is 1, and the subsystems are stopped when Fi is 0. When the branch temperature balancing system operates, the branch feeding amount is adjusted in a limited mode, and the limit control technology is provided. The alternate acknowledge mechanism of each subsystem of a heating furnace is built, coordinate control of each variable of the heating furnace is overall planned, and safety long-term stable operation of the heating furnace is achieved. Four branch flow rates of the heating furnace are not controlled in a definite-value mode but as an auxiliary loop of liquid level control, and the branch balance control implementation difficulty is large. The branch temperature balancing system is introduced to solve the problems that the branch temperature difference among four branch furnace pipes is large, and the opening degrees of branch feeding flow valves are not consistent.

The invention discloses a cement grinding mill system power consumption index prediction method based on an extreme learning machine, and the method comprises the steps: firstly collecting related variables, carrying out the operation analysis of a cement grinding mill system, selecting eight variables related to the power consumption of a cement grinding mill as input variables, selecting the ton power consumption as an output variable, and constructing an input and output layer of an ELM model; optimizing the number L of neurons of the ELM, the weight w of an input layer and the bias b of a hidden layer by using an IPSO algorithm; the IPSO algorithm taking a mean square error of the model as a fitness function in a parameter optimization process; ELM related parameters obtained through IPSO optimization being combined with sample data to complete training of an IPSO-ELM prediction model, and industrial field actual data being substituted into the trained model to complete online prediction of the power consumption of the cement grinding mill system. According to the method, the IPSO-ELM model is trained by using the sample data to obtain the power consumption prediction model, and variable data of an actual cement production site is input into the trained model, so that online prediction of the power consumption index of the cement grinding mill is realized.

An embodiment of the invention provides a six-rotor aircraft attitude decoupling control method. according to the six-rotor aircraft attitude decoupling control method, an undesired coupling terms ineach loop are regarded as output disturbances applied to the loop, an appropriate disturbance compensator is designed to compensate for the output disturbances and external disturbances, and the adverse effects of strong coupling and the external disturbances of an aircraft system are eliminated. The traditional disturbance observer is not suitable for a multi-input multi-output system. An anti-disturbance observer adopted in the six-rotor aircraft attitude decoupling control method can be used for the decoupling control of the multi-input multi-output system, ensures the disturbance suppression performance and robust stability of the disturbance compensator, has good decoupling and disturbance suppression, and can ensure good tracking performance and stability of a six-rotor aircraft.

The invention discloses a non-liner control system of a space division main tower and a method, comprising an on-site intelligent instrument, a database and an upper computer, wherein the on-site intelligent instrument is directly connected with the space-division king-tower, the database is used for storing historical data, and the on-site intelligent instrument, the database and the upper computer are successively connected; the upper computer comprises a non-liner controller which utilizes non-liner dynamic optimized on-line operation to obtain an output value of a control variable at present; the non-liner controller comprises a component deduction module and a non-liner model prediction control module. In addition, the invention provides a non-liner control method of the space-division king-tower. Compared with the control system, such as traditional PID and the like, the invention not only realizes the stable operation of two-end components and has better dynamic control effect.

The invention discloses a pseudo decoupling controller of a four-wheel steering intelligent automobile and a control method thereof. On the basis of intelligently sensing an external environment and observing internal parameters, a four-wheel steering intelligent automobile original model is firstly established, then a right inverse model is established and is arranged on the left side of the original model in a series connection mode, and the four-wheel steering intelligent automobile original model and the right inverse model jointly form a pseudo-decoupling system; a finite time stability model of the four-wheel steering intelligent automobile is established for observing the finite time stability of the four-wheel steering intelligent automobile. A finite time model mismatch degree model of the four-wheel steering intelligent automobile is established for mismatch degree observation of an original model and a right inverse model of the four-wheel steering intelligent automobile. And finally, a steering control decision module is designed, and making decisions on whether to steer and control parameters according to two characteristic parameters, namely external environment perception, internal parameter observation, finite time stability and finite time model mismatch degree, so that the steering control performance and the intelligent level of the four-wheel steering intelligent automobile are improved.

The invention discloses an electroencephalogram signal calibration method based on fuzzy processing. The method comprises the following steps that (1) a plurality of subjects wearing electrode caps take a transportation device, and electroencephalogram signals of the subjects and operation performance data of the transportation device are collected; 2) preprocessing the collected electroencephalogram signals and the operation performance data; 3) segmenting the preprocessed electroencephalogram signals, and calculating manifold features of each electroencephalogram segment; 4) performing fuzzy processing on the preprocessed operation performance data, and calibrating each electroencephalogram fragment by using fuzzy processing result parameters; and 5) inputting the manifold features of the electroencephalogram fragment and the calibration tag into a support vector machine algorithm for training, and calibrating the electroencephalogram fragment to be calibrated by using a support vector machine model. According to the method, the manifold features of the electroencephalogram signals can be extracted and obtained, the corresponding relation between the electroencephalogram signals and the fluctuation of the transportation equipment is established, and the problem of high coupling among various operation performance types of the transportation equipment is effectively solved.

The invention brings forward a mobile terminal comprising a metal frame, a metal support used for installation of a display screen and an antenna radiation body. The metal support is installed in the metal frame, and at least two edges of the metal support are matched with the corresponding edges of the metal frame. A metal ring is formed by the non-matching edges on the metal support and the edges, which are corresponding to the non-matching edges on the metal support, of the metal frame together. The metal ring is arranged in the projection area of the antenna radiation body. The mobile terminal is characterized in that the metal ring is provided with a grounding device which is connected with the reference ground of the mobile terminal. The objective of the mobile terminal is to solve a problem of strong coupling between the metal ring structure and the antenna radiation body in the mobile terminal so that antenna radiation efficiency is guaranteed.

The invention provides a dynamic parafoil semi-physical simulation system based on an active-disturbance-rejection decoupling control strategy, and relates to the field of unmanned aerial vehicle flight control, an 8-DOF parafoil dynamic model can effectively simulate the flight state of an actual parafoil system, model parameters are easy to correct, and information such as the slide-down ratio and the turning radius can be compared with the actual flight environment; the flight control algorithm based on ADRC decoupling is realized by a hardware controller, and the precision of trajectory tracking can be effectively improved through a coupling compensation method. And the PC is communicated with the hardware controller through an RS232 serial port. According to the control method based on ADRC decoupling, the coupling effect of the system can be effectively overcome, and the anti-interference performance and the trajectory tracking precision are improved. The power parafoil supports ground take-off and landing, the requirement for experimental conditions is not high, repeatability is high, parameters are convenient to adjust, and the research and development period is shortened.

The invention provides an on-line monitoring method for generator safety leading phase capability margin. The method comprises the following steps: constructing a generator reactive power minimizationobjective function based on a generator power angle equation; acquiring data of generator leading phase operation under different active outputs from a WAMS system to construct a sample library, andestablishing a function relationship and constraint conditions between a target variable and an independent variable; constructing a leading phase limit optimization model of the generator according to the function relationship and the constraint condition; judging whether the generator is in a leading-phase operation state or not by acquiring current active power and reactive power of the generator in real time; and when the unit is in a leading-phase operation state, starting the leading-phase limit optimization model for calculation to output the leading-phase limit and leading-phase capability margin of the generator under the current active output working condition. The method provided by the invention is simple in modeling, small in calculation amount, high in calculation speed, highin result precision and high in operation mode generalization capability, and realizes online monitoring of the leading phase capability margin of the generator without a field test.

The embodiment of the invention provides a communication method and device for a terminal and a server. The communication method comprises the steps that a first server receives a first request message sent by the terminal, and the first request message is used for enabling the first server to send an authentication request to a second server, and obtaining a first secret key from the second server; the first server sends a first request response message corresponding to the first request message to a terminal, wherein the first request response message comprises a second key; the first serverreceives a second request message sent by the terminal, and the second request message comprises a second key identifier, and the second key identifier is used for enabling the first server to generate a second request response message corresponding to the second request message according to a second key corresponding to the second key identifier; and the first server sends a second request response message to the terminal. The terminal obtains the authentication and the secret key from the server through over-the-air downloading, so that the generation and the use of the secret key are moreflexible.

The invention provides a stub-free micro-service calling method and device, and relates to the field of computers and finance, and the method comprises the steps: receiving a service calling request; when a service interface name in the service calling request and a corresponding method list exist in the latest method list cache, acquiring instance information of a service provider from a registration center; converting the service calling request into a conventional proxy request; sending the conventional agent class request to the service provider according to the instance information, and performing remote calling of the service. The problem of strong coupling of the service calling party and the service provider on the service stub is fundamentally solved, the service calling party can carry out service calling without loading the service stub, and the performance and stability of the calling party are improved.

The invention relates to a universal calibration device for protecting a vehicle electron control unit and relates to the control technology of vehicle electron. The calibration device which is designed by the invention and used as the middle layer of an upper computer calibration system and an electronic control unit is independent of the electric control unit, and comprises the calibration SCM and the double-interface RAM of an expanded CAN communication interface; the calibration SCM follows a CCP protocol and is communicated with the upper computer calibration system by the expanded CAN communication interface; calibration parameters and measuring parameters are stored in the double-interface RAM; the calibration SCM and the electric control unit share the parameters in the double-interface RAM. The calibration device has commonality which can be very conveniently integrated with the vehicle electron control unit and the upper computer calibration software (such as CANape, INCA), overcomes the defects of large developing working load and poor commonality of the prior art and improves the efficiency for the work of developing and calibration.

The invention discloses a pseudo-decoupling controller for a four-wheel-steering intelligent vehicle and a control method thereof. On the basis of intelligently sensing the external environment and observing internal parameters, the original model of the four-wheel-steering intelligent vehicle is first established, and then the right inverse model is established. Placed in series on the left side of the original model, the original model of the four-wheel steering smart car and the right inverse model together constitute a pseudo-decoupling system; then a finite-time stability model of the four-wheel steering smart car is established for the limited Observation of time stability, and then establish a finite time model mismatch degree model of four-wheel steering smart car, which is used to observe the degree of mismatch between the original model of four-wheel steering smart car and the right inverse model, and finally design the steering control decision-making module, according to the external environment perception And internal parameter observation, as well as the two characteristic parameters of finite-time stability and finite-time model mismatch degree, make a decision on whether to steer and control parameters, and improve the steering control performance and intelligence level of four-wheel steering intelligent vehicles.

The invention relates to a sewage treatment process soft measurement method based on a weighted probability slow feature model, which comprises the following steps: firstly, carrying out online sampling on a sewage treatment process to obtain a training sample set and a query sample at a next moment, establishing a weighted probability slow feature analysis model to extract slow features of the training sample, and estimating model parameters by adopting an EM algorithm; then establishing a local weighted regression model between the output variables and the slow features; and for a current query sample, extracting slow features and predicting the output of the query sample, then adding the query sample into a training sample set, waiting for an online sampling sample of a next sewage treatment process, and repeating the steps to predict the output so as to obtain an online prediction result of the effluent quality in the sewage treatment process. According to the method, the nonlinear dynamic modeling capability of the sewage treatment process and the prediction effect of the effluent quality are improved, and the sewage treatment process monitoring and control based on the method are more effective.

The invention provides a message processing method. The message processing method includes: analyzing a service message while the service message sent by a client is received so as to determine a service type of the service message; querying a corresponding service system according to the service type of the service message, and storing the service message in a message queue corresponding to the service system; and sending a message processing command to the service system so as to allow the service system to acquire a service message from the message queue according to the message processingcommand. The invention also provides a message processing device and equipment, and a computer readable storage medium. A message platform is deployed, and the client can be connected to the message platform, and can send a message to the message platform; the message platform can transfer the processed message to the service system, and the concurrence pressure of the service system can be effectively relieved.

The invention discloses a method for optimizing the design of a high-frequency high-voltage transformer based on a genetic algorithm. The invention establishes a mathematical model based on the minimum loss formula of the transformer, the insulation size of the transformer and the shape of the iron core, and takes the number of turns of the primary side and the number of layers of the secondary side as Optimize variables, efficiency is the optimization goal, and genetic algorithm is used to optimize the transformer to maximize the efficiency of the transformer and minimize the loss. Under the same conditions, it also means to minimize the temperature rise, and make full use of the leakage inductance and distributed capacitance of the transformer to participate in the power supply. In the work of the system, the LCC resonant circuit is formed to reduce the loss of the transformer, thereby reducing the temperature rise. Compared with the prior art, the present invention introduces a genetic algorithm, which has a fast and random search capability irrelevant to the problem. The search starts from the group and has the characteristics of parallelism. It can compare multiple individuals at the same time, which greatly speeds up the process. the speed of finding the optimal solution.

The invention discloses a six-rotor unmanned aerial vehicle MPC control method based on an ROS platform, and belongs to the field of unmanned aerial vehicle intelligent control. According to the method, the kinetic model of the six-rotor unmanned aerial vehicle is established, the problems of high nonlinearity and strong coupling of the model of the six-rotor unmanned aerial vehicle are solved through linearization processing of the model, and the control target is greatly simplified; a single-stage controller of the unmanned aerial vehicle is designed by adopting a model prediction control method, a control structure adopts a closed-loop control method, the position and the attitude of the unmanned aerial vehicle are controlled, and the shackle that a traditional unmanned aerial vehicle needs to be cascaded with two-stage controllers is broken through. The method has the advantages of strong autonomy, accurate tracking, high stability, low cost and the like, and can be applied to the fields of unmanned aerial vehicle power line inspection and the like.

The invention discloses a broadband metamaterial unit and a broadband MIMO antenna, belonging to the technical field of microwave antennas. The resonant ring unit of the present invention includes a resonant ring, a dielectric substrate and a metal floor; the resonant ring includes a circular ring and a cross structure with gaps; the resonant ring unit is applied to an antenna, and two types of MIMO antennas are designed; The MIMO antenna described above has a relatively compact structure, a wider bandwidth and a smaller size.

The invention relates to a file private cache establishing method and device. The device mainly comprises a strategy determining module and a file private cache unit module. The method specifically comprises 1) intercepting all IRP (I / O (input / output) request package) requests in an operating system kernel; 2) according to IRP strategy determining conditions including IRP types, process unique identities, file path identities and file content, selecting the IRP requests which require file private caches and establishing private cache units; 3) executing the IRP requests of the file private caches and feeding the result back to the operating system kernel. According to the file private cache establishing method and device, the file private caches and file system caches can exist simultaneously, so that the problem of strong coupling between various application content differentiating products and operating system file cache processing of the same file can be solved; meanwhile, the operating mode of the file private caches is identical to that of the file system caches, and no changes of the file operating mode and the file information of application software occur, so that the problem of uniformity of various applications access to the same file can be solved.