567 results about "Strong coupling" patented technology

The present invention generally relates to organic polymers able to participate in an analyte-recognition process, where an analyte facilitates an energy transfer between an energy donor and an energy acceptor. Certain embodiments of the invention make use of fluorescent conjugated polymers, such as poly(phenylene ethynylene)s and other polymers comprising pi-conjugated backbones. For example, one aspect of the invention provides a fluorescent conjugated polymer and an indicator that can interact with each other in the presence of an analyte to produce an emissive signal. In some cases, the interaction may include energy exchange mechanisms, such as Dexter energy transfer or the strong coupling effect. The interaction of the conjugated polymer and the indicator, in some instances, may be facilitated through specific interactions, such as a protein/carbohydrate interaction, a ligand/receptor interaction, etc. Another aspect of the invention provides for the detection of biological entities, for example, pathogenic bacteria such as E. coli, or viruses such as influenza virus. In some cases, biological recognition elements may be used to determine the biological entity, for instance, carbohydrates that can be used to specifically interact with at least part of the biological entity, such as a protein in the cell membrane of a bacterium. Still other aspects of the invention involve articles, devices, and kits using any of the above-described systems.

A portable terminal is provided. The terminal includes a reinforcement member mounted in a housing of the portable terminal, a plurality of coupling pieces, a removable cover member, and a plurality of coupling grooves corresponding to the plurality of coupling pieces, in which a battery pack mounted in the housing is interposed between the removable cover member and the reinforcement member. The width of a coupling structure required for securing a coupling force for the removable cover member can be reduced by at least about 10% when compared to a conventional coupling structure, thereby securing a strong coupling force and contributing to expansion of a battery capacity for a portable terminal having a specific size.

The present invention includes an optical waveguide with a grating and a method of making the same for increasing the effectiveness of the grating. In one example, the grating is at least partially covered by a liner layer disposed on at least a portion of a grating; and a cover layer disposed on the liner layer, wherein a first material selected for the core and ridges and a second material selected for the liner layer are selected to provide a difference in the index of refraction between the first and second material that is sufficient to provide a contrast therebetween.

The invention provides an inertia and magnetic field integration measuring method based on an SERF (spin-exchange-relaxation-free) atomic spin effect. The inertia and magnetic field integration measuring method based on the SERF atomic spin effect comprises the following steps: firstly establishing an overall model for the inertia and magnetic field integration measurement; secondly, manufacturing a measurement sensing unit, and carrying out high-frequency alternating current non-magnetic electric heating; starting a driving laser (z-axis) for carrying out optical pumping on the sensing unit; and emitting a detection laser (x-axis) in a direction vertical to the z-axis; thirdly, carrying out driving magnetic compensation through a three-dimensional magnetic compensation coil so as to counteract a magnetic field of the outside world; fourthly, carrying out azimuth alignment on a main magnetic field and the driving laser and hyperpolarization nucleon self-spin so as to realize the nuclear spin-electron spin strong coupling; fifthly, extracting the information of the atomic spin precession movement in the detection laser by adopting a closed-loop faraday modulation detection method, and obtaining inertia angular speed information; and finally, obtaining the current value of a compensation signal of the magnetic field, and calculating to obtain the information of the current magnetic field. The inertia and magnetic field integration measuring method based on the SERF atomic spin effect has the characteristics of high measurement accuracy and strong autonomy.

The invention discloses a four-rotor aircraft control method based on PID neural network (PIDNN) control. First, dynamic equations of a four-rotor aircraft are established based on the Newton-Euler equations, and then, a nested controller is proposed. An inner loop decentralized controller is designed based on a PIDNN method to realize attitude control, and the outer loop adopts a classical PID control method. Next, online learning of a PIDNN controller is realized by an error back propagation method, the connection initial weight of PIDNN is determined based on the principle of PID control, and an appropriate learning step is selected according to the discrete Lyapunov theory to guarantee the convergence of the controller. Thus, the control problem of a four-rotor aircraft caused by high degree of nonlinearity, strong coupling and under-actuating capability, disturbance from the external environment in the process of flight and other factors can be effectively solved.

The invention discloses a variable weight type random scheduling method based on real-time working conditions; the scheduling method optimizes the problem of the dynamic random rescheduling in terms of classification of various perturbation, rescheduling driving mechanism, the construction of rescheduling majorized set, the selection rule of the workpieces to be processed and rescheduling optimization algorithm, classifies various perturbation in the production process into two classes of invisible perturbation and dominant perturbation, adopts corresponding rescheduling driving mechanisms according to different types of perturbation, thus quickly and effectively dealing with various uncertain problems which randomly occur in the production process; the scheduling method is suitable for the mode with a plurality of varieties and single-piece small lot production, can rapidly and effectively handle the various uncertain problems which randomly occur in the production scheduling process and has strong coupling capacity with the real-time working conditions, thus being capable of improving the self-adaptability of a workshop production system to the uncertain working conditions and the agility of production scheduling, reducing unnecessary rescheduling, enhancing reaction capacity to the working conditions and lowering the loss of the production system brought by the various uncertain problems.

The invention discloses a distributed composite anti-interference autopilot of a BTT flying machine and a design method thereof. The distributed composite anti-interference autopilot of the BTT flying machine and the design method thereof are suitable for high-precision anti-interference attitude control of the BTT flying machine, and solve the technical difficulty of time-varying characteristic, uncertainty, nonlinearity strong coupling and flight parameter perturbation of a BTT flying machine object. The method includes the steps that firstly, filtering processing is conducted on a guidance instruction through a tracking differentiator technology, so that a smooth transient process is obtained; secondly, a time varying uncertain item and a nonlinearity strong coupling item of an object model are used as internal disturbance of the object, the internal disturbance and external disturbance are integrated to be lumped disturbance, and an ESO is designed so that the lumped disturbance can be estimated; finally, the distributed composite anti-interference autopilot is designed, an appropriate control parameter is set, the stability of a closed-loop system is guaranteed, the anti-jamming capability and tracking precision of the system are improved, and therefore the technical difficulty of attitude control over the BTT flying machine is solved.

The invention discloses an internet-of-things access platform data management method. The method comprises the steps of providing a distributed message middleware, registering an internet-of-things access device protocol through an access platform gateway, setting a corresponding theme of the distributed message middleware according to the internet-of-things access device protocol through the access platform gateway and forming a mapping relation between the internet-of-things access device protocol and the theme; balancing terminal data load; transferring original data of the terminals to a gateway server cluster by terminals of internet-of-things access devices through a load balancer; performing primary data analysis for the original data and transmitting the data to a protocol analysis server through the gateway server cluster; performing protocol analysis through the protocol analysis server. Through the method, the defects of single point failures, poor performance, incapability of extending storage capacity, strong coupling between programs and limited types of access devices in the conventional internet-of-things access platform are avoided.

The invention relates to a control method of a combustion system of a circulating fluidized bed boiler, which adopts multivariable expert intelligent self-calibration PID control and is provided with an on-line calculation module for the static characteristics of the circulating fluidized bed boiler. The on-line calculation module for the static characteristics of the circulating fluidized bed boiler calculates the coal supply quantity, the limestone quantity and the deslagging quantity for realizing the optimizing combustion of the boiler under different loads, the primary air quantity and the secondary air quantity are optimized and proportioned and are used as load feedforward signals which are applied to a main steam pressure control loop, a limestone quantity control loop, a bed pressure drop control loop, a bed temperature control loop and an oxygen quantity control loop, and each control loop adopts an expert intelligent self-calibration PID controller to form a multivariable combustion control system of a CFB boiler. The invention is provided with the calculation module for the static characteristics of the circulating fluidized bed boiler, which can accurately send out each regulation quantity instruction at real time and realize automatic control; the multivariable expert system is in consideration of the nonlinearity and the strong-coupling property of the combustion system of the boiler and ensures the performance robustness of the control system; and meanwhile, the PID parameters are automatically regulated according to the change of the characteristics of a controlled object, so the automatic combustion control system of the circulating fluidized bed boiler has stable robustness.

The invention discloses a strong-coupling ultra-wideband phased-array antenna based on interdigital resistive surface loading and a development method of the strong-coupling ultra-wideband phased-array antenna. By improving a traditional vertical strong-coupling phased array antenna, an interdigital resistive surface is loaded between the antenna and a reflecting floor, and the working frequency band of the antenna is broadened. An ultra-wideband coplanar strip line-microstrip line feed balun is applied, the ultra-wideband coplanar strip line-microstrip line feed balun and an antenna radiationpatch are integrated on the same antenna dielectric substrate, and the ultra-wideband coplanar strip line-microstrip line feed balun is simple in structure and convenient to process. The dielectric matching layer of the metal split ring metamaterial structure is printed above the antenna, a traditional pure dielectric wide-angle impedance matching layer is replaced, the weight is lighter, and thethickness is smaller. The antenna is simple and stable in structure and easy to process, the active standing wave of 60-degree scanning of an E surface is smaller than 2.5 in the fL-10fL frequency band, the active standing wave of 60-degree scanning of an H surface is smaller than 3.6, the overall height of the antenna is smaller than 0.65 high-frequency wavelength, and the phased-array antenna with the design is particularly suitable for an application platform needing an ultra-wide working band.

The invention provides a small-scale LTE multi-array antenna. In the small-scale LTE multi-array antenna, each radiation unit comprises a dual-polarized oscillator and baluns, the dual-polarized oscillator comprises two separate dipoles, each feeding network employs a planar structure, feeding points between network ports are located in the same horizontal line, and the radiation units are placed by employing a strong coupling mode. According to the antenna, the strong-coupling radiation unit technology is employed, the spacing between the radiation units is shortened, and the length of the whole antenna is shorter; the low-profile radiation units are employed so that the height of the antenna is reduced, the overall size of the antenna is only 50% of the size of the same kind of product through comprehensive effect, the occupation of the antenna space is greatly reduced, and the gain of unit arrays is high; and the feeding networks with the integrated planar structures are employed so that the amplitude and the phase precision are high. According to the antenna, excellent performance of mobile communication can be guaranteed.

The invention discloses a permanent magnet synchronous motor temperature rise heat dissipation analysis method based on the multi-field coupling technology. The method comprises the first step of carrying out the analysis of electromagnetic loss by the establishment of an electromagnetic field model of an electric machine to obtain the copper loss on a coil, the iron loss of an iron core and the eddy-current loss of permanent magnet materials, the second step of establishing a fluid solid strong coupling conjugate heat conduction model of the structural temperature field analysis and the fluid heat dissipation analysis of the electric machine, the third step of establishing a bothway weak coupling model of the electromagnetic loss and the fluid solid strong coupling conjugate heat conduction analysis, and the fourth step of achieving the convergence of a single physical model and the convergence of the load transferring between the electromagnetic field model and the fluid solid strong coupling conjugate heat conduction model by the adaptation of a repetitive cycle iterative method, wherein if the condition of the convergence meets the condition set by a user, the coupling is balanced, and the computing process is finished. The permanent magnet synchronous motor temperature rise heat dissipation analysis method integrates the advantages of the strong coupling and the weak coupling, the temperature rise and the heat dissipation process when the electric machine works are precisely simulated in a unified software platform, the stability of the convergence in the process of computing is enhanced, and computing precision and computing efficiency are improved.

A high-pass two-dimensional ladder network has been described for high-field MRI and credential applications. The next-to-highest eigenvalue of the network corresponds to a normal mode giving rise to B₁ fields with good spatial homogeneity above the resonator plane. Other eigenvalues may also be used for specific imaging applications. In its most basic form, the ladder network is a collection of inductively coupled resonators where each element of the array is represented by at least one conducting strip having a self-inductance L, joined by a capacitor C at one or more points along each resonator. In the strong coupling limit of the inductively coupled high-pass two-dimensional ladder network resonator array, the array produces a high-frequency resonant mode that can be used to generate the traditional quadrature B₁ field used in magnetic resonance imaging, and in the limit of weak or zero coupling reduces to a phased array suitable for parallel imaging applications.

The invention provides an autonomous underwater vehicle (AUV) vertical plane under-actuated motion control method, which comprises the steps that: (1) initialization setting is performed on the AUV; (2) a top-layer control computer transmits a mission and finishes the global planning; (3) a motion control computer receives the feedback information of a sensor, performs control calculation by using a self-adaptive neuro-fuzzy inference system-based auto-disturbance rejection controller, and outputs a control command, namely an elevator angle delta s of the stern; (4) a steering engine executes the control command, finishes the coordination control of AUV depth and pitch attitude, and realizes the motion control under the AUV vertical plane under-actuated constraint; and (5) whether the mission is finished is judged, if the mission is finished, the data is saved and the voyage is ended, and if the mission is not finished, the control command is continuously calculated by the motion control computer. The AUV vertical plane under-actuated motion control method is suitable for the under-actuated, strong-coupling and complex motion relationship of the AUV in the vertical plane motion process, and can realize precise motion control.

In order to get rid of the direct torque control system bigger pulse torque issue, it invents an electric power driven assistant steering system based on intelligence control, introducing fuzzy neural network into the electric driven torque control, not relying on the controlled precision model, with the established fuzzy strategy being able to get rid of the nonlinear strong coupling defects of the fuzzy strategy, with better self learning, parameter automatic control and adjustment, improved system self adaptation abilities. The controller is made of MCU, PWM, and the power source module, with torque, velocity, and driven locomotive feedback current as the input language variable, through offline model construction, it forms control strategy and on line control, realizing electric assisted steering intelligent control. It applies to sedans, fuel cars, locomotives, with agile and light weight, greatly improved in operation comfort and stability.

The invention discloses a wing-borne low-scattering ultra-wideband conformal phased array based on a strong coupling effect. The whole antenna structure of the array is subjected to conformal processing, and +/-45 degree scanning in the arraying direction is realized within a broadband of 0.5-2GHz. Compared with the traditional planar ultra-wideband phased array, the phased array disclosed by theinvention has significant low-scattering characteristics inside and outside the working band of the antenna. The whole antenna structure mainly includes a coaxial feeding structure of an antenna radiation unit, a gradient line balun used for connecting an antenna radiation patch and the feeding structure, a metal ground plate which is conformal with a flight carrier, a parasitic metal block located on the metal ground plate, a conformal dielectric substrate used for supporting the radiation structure of the whole phased array, connected long-slot conformal radiation patches based on the strongcoupling effect, a conformal dielectric substrate used for supporting a resistive electromagnetic metamaterial, a circular resistive electromagnetic metamaterial with an ultra-wideband electromagnetic wave absorbing effect and parasitic slots on both sides of the antenna radiation unit.

The invention provides a statistical energy analysis parameter acquisition method based on a finite element method and a power input method. A finite element model of a structure is established according to a geometric model of the structure, boundary conditions are applied, the finite element model of the structure is subjected to mode analysis, a mode of a system and a rigidity matrix and a mass matrix of a subsystem are obtained, vibration energy of the subsystem and input power of the system are obtained through a power flow model, and statistical energy analysis parameters are obtained through calculation through the power input method. The finite element method and the power input method are combined to obtain the statistical energy analysis parameters of the structure, the calculated rigidity matrix, mass matrix, mode shape and inherent frequency are obtained through the finite element method, the input power and the vibration energy are obtained through calculation through the power flow model, and the input power and the vibration energy are substituted into the power input method for calculation to obtain the statistical energy analysis parameters. According to the method, statistical energy analysis can be carried out aiming at the problem of strong coupling between structures, the limitation about weak coupling assumption between the structures in existing statistical energy analysis is solved, and the method can be popularized to complex structures.

A highly sensitive magnetic antenna and an antenna device achieve strong coupling with magnetic flux substantially perpendicular to main surfaces of a magnetic core, an enlarged antenna opening, and increased efficiency of magnetic flux radiation. The magnetic antenna includes a flexible substrate and a magnetic core preferably having a substantially rectangular plate shape. The flexible substrate has a spiral coil conductor located thereon, and the coil conductor has a conductor opening located at the center of the winding center thereof. The flexible substrate is bent in the vicinity of the two sides of the coil conductor spaced apart from the center of the conductor opening and along the two sides of the magnetic core, so as to wrap around the upper surface, left and right surfaces, and portions of the lower surface of the magnetic core.

The invention relates to the field of linear motor control, in particular to a method for restraining the pulsation of a thrust system of a linear motor; the method adopts a sliding mode thrust controller and a magnetic flux controller, the thrust deviation and the magnetic flux deviation are selected as controlled variables, an integral sliding mode surface which is composed of the thrust deviation and the magnetic flux deviation design the sliding mode motion trajectory, thereby a system can move according to the sliding mode trajectory and the output thrust and the magnetic flux can better track specified value, wherein, a fuzzy controller utilizes the fuzzy control method which uses language information and data information to approach any specified continuous function to solve the jitter problem of a sliding mode control system. The method has the advantages that: a direct drive control system of the linear motor has strong coupling property, nonlinear property, multiple variables and unique end effect, the use of the direct thrust control method of the fuzzy sliding mode linear motor with high robust performance can solve the impacts of various factors on the control performance, thereby achieving the purposes of restraining the thrust pulsation of the linear motor and obtaining great dynamic response performance.

The invention discloses a preparation method of a strong-coupling type attapulgite-KHX-g-C3N4 composite material. The preparation method comprises the following steps: adding attapulgite and toluene with the weight which is 30 to 40 times as much as that of the attapulgite into a four-neck flask in sequence; uniformly stirring and raising the temperature to 60 DEG C; after 0.5h, adding a certain amount of a silane coupling agent while stirring to react for 4h; after filtering and separating a reaction product, washing the reaction product with the toluene and absolute ethyl alcohol in sequence; drying at 105 DEG C to obtain KHX modified attapulgite; grinding and sieving by a 200-mesh (74mu.m) sieve for later use; weighing a certain amount of the modified attapulgite and dispersing the modified attapulgite into de-ionized water with the weight which is 200 to 300 times as much as that of the modified attapulgite; carrying out ultrasonic dispersion and adding a certain amount of melamine; stirring and condensing and reflowing at 80 DEG C for 2h; freeze drying for 48h; after grinding, adding an obtained mixture into a quartz boat; adding the quartz boat into a tubular furnace and carrying out programmed temperature rising under the air atmosphere; keeping for 2h, and then naturally cooling; sufficiently grinding a product into powder to obtain the attapulgite-KHX-g-C3N4 composite material. The strong-coupling type attapulgite-KHX-g-C3N4 composite material disclosed by the invention has a good catalytic performance, and cost reduction and pollution reduction can also be realized, so that the strong-coupling type attapulgite-KHX-g-C3N4 composite material has relatively good application prospect and economic benefits.

The invention discloses a dissolved oxygen model prediction control method based on a self-organization radial basis function neural network, not only belongs to the field of control, but also belongs to the field of water treatment. Aiming to the characteristics of high nonlinearity, strong coupling, time varying, large lag, serious uncertainty and the like in a sewage disposal process, the control method improves the disposal capability of the neural network by automatically adjusting a neural network structure, builds a prediction model of the sewage disposal process, carries out control through a prediction model control method, and therefore improves a control effect, and enables dissolved oxygen to achieve expected requirements fast and accurately. The method solves the problem that current methods based on a switch control and a proportion integration differentiation (PID) control are poor in adaptive ability. Experimental results show that the method can control dissolved oxygen concentration fast and accurately, has strong adaptive ability, improves the quality and the efficiency of sewage disposal process, reduces sewage disposal cost, and promotes a sewage treatment plant to run efficiently and stably.

An interactive coupling numerical simulation method for a molding temperature field of a composite autoclave comprises the following steps: building a heat flow calculation model to obtain a flow field and a fluid temperature field; building a curing molding calculation model to obtain a solid temperature field formed by a composite member and a molding die; performing temperature interaction based on iterative calculation of the heat flow calculation model and iterative calculation of the curing molding calculation model to realize temperature coupling between a fluid and a solid. According to the interactive coupling numerical simulation method, impacts on an airflow field from a die temperature field and a member temperature field are taken into consideration, iterative-step-based bidirectional coupling analysis is adopted, data interaction between the solid temperature field and the airflow field is arranged in each iterative step, and the strong coupling function between the solid temperature field and the airflow field is drawn into consideration, so that the problem of deviation of the temperature field in the background art is effectively solved, the reliability of simulated results is improved, the simulation better conforms to the reality, and a foundation is laid for follow-up stress and strain analysis.

The invention discloses a mobile self-adaption energy and information synchronization wireless transmission method which comprises the following steps: Step 1, an embedded MCU generates a combination frequency signal; Step 2, the combination frequency signal is coupled to a wireless strong coupling type bilateral matching receiving coil; Step 3, an optimal frequency estimation circuit estimates a resonance oscillation frequency point; when the frequency of a frequency synthesizer is stabilized, the Step 4 is carried out; Step 4, the embedded MCU generates an information sequence, and a frequency-selecting switch controls signal output; Step 5, according to the amplitude of fluctuation of a DC signal, the situation that whether a device enters a restarting mode or not is determined; Step 6, when the amplitude of fluctuation of the DC signal is smaller than the reference level offset, the device enters the restarting mode. The invention further discloses a device for realizing the mobile self-adaption energy and information synchronization wireless transmission method. The device comprises an energy and information wireless launching unit and an energy and information wireless receiving and recovery unit connected with each other and has the advantages of high efficiency and reliability.

The invention discloses a polycell collaborative coupling acoustic meta-material design method. The method comprises a structure design method with insufficient localization rigidity and a structure design method with sufficient localization rigidity, wherein the structure design method with insufficient localization rigidity adopts a separating framework with localization rigidity lower than thinplate rigidity to separate local area resonance cells, so that strong coupling resonance behaviors of a single cell is generated, and a polycell combined structure with lumped coupling resonance effect is formed; the structure design method with sufficient localization rigidity adopts the separating framework with localization rigidity higher than thin plate rigidity, so that resonance of a single cell is not mutually affected within a design frequency band; and cells with gradient distribution of multiple thin plate widths, thin plate thicknesses or additionally mass block weight structure parameters define a polycell combined structure. The polycell collaborative structure can be applied to various transfer tools and various building decorations, and provides a brand-new denoising scheme for creating a low-noise environment.

The invention relates to the field of industrial automatic control and aims to provide a pre-milling system control method based on fuzzy intelligent control and an optimization method. In the pre-milling system control method, a steady flow cabin weight control loop is used for controlling feeding, discharging and self circulation of a steady flow cabin, and a cyclic load control loop is used for controlling feeding, discharging and self circulation of a grinding system; and fuzzy intelligent control is adopted in the steady flow weight control loop, and a prediction control method is adopted in the cyclic load control loop for controlling. According to the invention, the weight of the steady flow cabin is stably kept within a safety range, and severe oscillations are avoided; the prediction control method adopted in the cyclic load control loop can be used for effectively processing non linearity, strong coupling, multiple variables, large time-delay and other properties in a pre-milling system flow, and effectively treating constraint conditions; and thus, the fluctuations of all variables are obviously reduced, the automation level of a pre-milling system is increased, the labor intensity of workers is reduced, and the purpose of stable and optimized operation of the system is achieved.

The invention discloses a low-cross-polarization ultra-wideband strong-coupling opposite-dipole phased array antenna. The antenna comprises an opposite strong-coupling dipole unit, an impedance matching layer and a reflection ground plate; the bottom of the opposite strong-coupling dipole unit is vertically embedded in the reflection ground plate; and the impedance matching layer is arranged at the top of the opposite strong-coupling dipole unit and is parallel to the reflection ground plate. According to the low-cross-polarization ultra-wideband strong-coupling opposite-dipole phased array antenna of the invention, two dielectric substrates and the opposite-dipole structure are adopted, so that the intrinsic defect of low cross polarization of a traditional vertical strong coupling phasedarray antenna can be eliminated; unique metal vias are designed at feed Balun portions connected with two dipole patches so as to suppress the resonance of the array at high frequencies and improve the degree of isolation between array units to some extent; and the open-loop metamaterial wide-angle impedance matching layer at the upper part of the antenna is adopted to replace a traditional puredielectric wide-angle impedance matching layer, and therefore, the antenna of the invention has the advantages of light weight, easiness in realizing conformality, modularity and the like.