36results about How to "Rapid refactoring" patented technology

The invention relates to a real-time fault detection and automatic repair system for a power grid. The real-time fault detection and automatic repair system comprises a multi-level sensing module, a data processing module, an automatic repair module and a monitoring and logging module. The multi-level sensing module collects data such as voltage, current, frequency and temperature in operation of a power grid by deploying multiple types of sensors, and sends the data to the data processing module. And the data processing module analyzes the collected data through an embedded intelligent algorithm, identifies potential faults and generates fault diagnosis results. And the automatic repair module executes repair operations of isolating a fault area, reconstructing a power grid topological structure and recovering normal power supply according to a fault diagnosis result. The monitoring and log module records the operation state of the power grid and the fault diagnosis and repair process, and provides fault analysis and performance evaluation functions through a user interface. According to the system, real-time detection, accurate positioning and automatic repair of power grid faults and comprehensive monitoring of operation data are realized, and the safety and reliability of power grid operation are remarkably improved.

The invention discloses a rapid reconstruction method, device and equipment for a soil mass freeze-thaw hydrothermal field and a storage medium, and the method comprises the steps: building a one-dimensional soil column frost heaving-thaw collapse calculation model through finite element software, carrying out the simulation calculation to obtain a soil mass one-dimensional freeze-thaw transient temperature field and a moisture field, and obtaining a source domain data set containing the position, time, temperature and saturation; the position and time in the source domain data set serve as input, temperature and saturation serve as output, a deep neural network is established, and a loss function comprises data loss and physical loss and also relates to a temperature field and a moisture field; training the source task model to obtain neural network parameters; and training the target task model. On the basis of numerical simulation and deep transfer learning, the problem of multi-field coupling under the background of machine learning is solved, and meanwhile, the generalization performance of the model is improved, so that rapid reconstruction of the transient temperature field and the moisture field of the one-dimensional frost heaving-thaw collapse test of the soil body under the condition of sparse measuring points is realized.

The invention discloses an ultra-wideband reconfigurable power amplifier with an adaptive network. The ultra-wideband reconfigurable power amplifier comprises a first ultra-wideband coupler, a second ultra-wideband coupler, a third ultra-wideband coupler, a fourth ultra-wideband coupler, an ultra-wideband phase shift attenuation unit, the adaptive network, a balanced power amplifier unit and a control power amplifier unit. The adaptive network comprises an ultra-wideband power divider, a frequency detection unit, a power detection unit and a data register unit. The control power amplifier unit performs active load modulation on the load impedance of the balance power amplifier unit to realize reconfiguration; the ultra wide band phase shift attenuation unit adjusts the amplitude and the phase of a radio frequency signal at the same time, and expansion of adjustable dimensions is achieved. The adaptive network detects frequency information and power information of a radio frequency input signal to realize accurate sensing of the radio frequency signal; and the adaptive network is combined with the ultra-wideband phase shift attenuation unit to realize adaptive closed-loop control of the ultra-wideband reconfigurable power amplifier.

The invention belongs to the technical field of three-dimensional three-component velocity measurement, and provides a three-color mask single-color camera particle image velocity measurement particle three-dimensional distribution reconstruction method, which comprises the steps of color particle image shooting, color channel separation, preliminary three-dimensional reconstruction and three-dimensional reconstruction refinement by using a convolutional neural network model. According to the method, three-dimensional reconstruction is performed through the convolutional neural network model, so that the spatial position and the intensity distribution of the particles are more in line with the real situation, the particle elongation effect is greatly reduced, the calculation efficiency is improved, and the method has higher resolution in the depth-of-field direction.

The invention belongs to the technical field of fault diagnosis, and particularly relates to a gearbox fault diagnosis method and system based on cyclic pulse characteristic decomposition, and the method comprises the steps: constructing a new dictionary matrix, namely a cyclic pulse dictionary matrix, to accurately estimate a pulse cycle period contained in a signal formed by mixing a plurality of periodic pulse signals; a Goertzel algorithm is adopted to obtain corresponding frequency amplitudes according to the magnitude sequence of the energy values of the pulse cycle periods; and separating and reconstructing the CPCC corresponding to the pulse cycle period, and decomposing the signal into a plurality of CPCCs. According to the invention, the cyclic pulse dictionary matrix is constructed to carry out sparse representation on the pulse cycle period of the periodic pulse signal, and the cycle period of the fault pulse characteristic in the gear vibration signal is accurately estimated; the Goertzel algorithm is adopted to decompose and reconstruct the CPCC in the gear vibration signal according to the pulse cycle period, and the decomposed CPCC contains abundant periodic pulse characteristic information.

The invention relates to an automatic intelligent power supply network reconstruction method and an energy supply stability control system, and the method comprises the following steps: obtaining the state data of a power supply network in an energy system, and carrying out the network topology analysis and fault diagnosis according to the state data; if the power supply network breaks down, obtaining a reconstruction scheme of the power supply network according to a preset power supply optimization strategy; and performing network topology reconstruction on the power supply network according to the reconstruction scheme of the power supply network, according to the power supply optimization strategy, a stability optimal objective function and a system operation cost optimal objective function are constructed by taking a switching variable and a power generation distribution variable of a system topology as decision variables, multi-objective optimization calculation is carried out by considering steady-state constraints and transient constraints, and a reconstruction scheme of the power supply network is obtained. Compared with the prior art, the method achieves the stable control of the power supply network, and improves the reliability and stability of the power grid.

The invention discloses an automatic site selection method and system for a mountain fan hoisting platform, and belongs to the technical field of new energy wind power generation engineering, and the method comprises the steps: obtaining original topographic data, and reconstructing the original topographic data into a digital elevation model with a spatial index; querying the digital elevation model by using a spatial index based on the structural security constraint parameters of the fan foundation, and determining an effective elevation search interval; discretizing a calculation area into grid units in an elevation interval, taking a core area as a seed point, and outputting binary grid data through a potential energy driving cost function and a heuristic search extension platform boundary; performing morphological correction on the binary raster data and calculating the total earthwork amount; and iteratively searching and optimizing a scheme with the minimum total earthwork volume in the elevation interval, and converting the scheme into vectorized engineering primitives to be output. On the premise that the safety of the foundation structure is ensured, the earthwork amount is globally optimal, and the method has the advantages of being high in automation degree, high in terrain adaptability and good in engineering practicability.

This invention discloses a comprehensive energy operation simulation method and system based on multi-objective optimization, belonging to the field of energy technology, aiming to solve the problems of equipment overload and discontinuous power supply caused by supply and demand imbalance under extreme climate conditions. The method establishes a multi-objective collaborative optimization model based on the renewable energy types and seawater desalination load characteristics of the island microgrid. An improved NSGA-III algorithm is used to simulate the model and generate a scheduling scheme, including the start-up and shutdown sequence of the hydrogen production equipment. When a typhoon warning signal is received, the seawater electrolysis hydrogen production equipment is forcibly locked, and the output power of the diesel generator is fixed within a preset range. During the operation of the hydrogen production equipment, the output fluctuation data of the wave energy generator is collected in real time, and the operating power of the reverse osmosis seawater desalination unit is adjusted through a dynamic correction algorithm. When the hydrogen storage capacity of the hydrogen production equipment reaches a threshold, the power lock of the diesel generator is released, switching to a multi-energy coupling control mode, and the charging and discharging strategy of the energy storage equipment is updated synchronously.

The application discloses a solvent-free phenolated lignin-based polyurethane elastomer and a preparation method and application thereof. A phenolated lignin with high phenolic hydroxyl content is prepared first, and then the phenolated lignin is dispersed in a polyol, and a lignin-based polyurethane elastomer rich in dynamic phenol-type urethane bonds is synthesized by using a one-step solvent-free method, and the synthesis process is green and simple. The phenolated lignin has a lower molecular weight, a higher hydroxyl content and a higher reactivity, and the polyurethane elastomer synthesized by using the phenolated lignin has a double dynamic crosslinking network composed of a phenol-type urethane network and a hydrogen bond crosslinking network. The obtained solvent-free phenolated lignin-based polyurethane elastomer has excellent mechanical properties, reprocessing properties, light-heat self-healing properties and thermal-oxidative aging resistance. The contradiction between the mechanical properties and dynamic mechanical properties of traditional polyurethane elastomers is solved, and a new idea is provided for developing green and multifunctional polyurethane elastomers in future industrial fields.

A modular adjustable fixing device for an underwater acoustic transducer array includes a main support rod, a central structural component, a transducer fixing ring, and a sliding connector. One end of the main support rod is fixedly connected to the interior of the central structural component through three sets of square holes. The other end extends to form a Y-shaped array frame. The extended end of the main support rod is used to fix the transducer fixing ring, which is fixed to the main support rod by the sliding connector and suspended from the rear side of the central structural component. The sliding connector is slidably fitted onto the main support rod and positioned by fasteners, with its end connected to the transducer fixing ring. The central transducer fixing ring is fixed to the top of the central structural component. This invention allows for flexible adjustment of the baseline length of the underwater acoustic transducer array by adjusting the position of the sliding connector, meeting the acoustic testing requirements of different array models. Furthermore, its modular design facilitates easy disassembly and is suitable for stable fixing of transducer arrays in complex aquatic environments.

The invention discloses a fixed time synchronous control method and system for a mechanical arm system under actuator faults, and the method comprises the steps: constructing a fixed time sliding-mode observer according to the state information and control input information of the mechanical arm system; estimating total disturbance by adopting a fixed time sliding mode observer; the total disturbance comprises dynamic model parameter uncertainty and external disturbance; constructing a sliding mode variable based on a neural network sign function; on the basis of a sliding mode variable, total disturbance and a dynamic model of a mechanical arm system, actuator faults are considered, a fixed time synchronous controller is designed according to the Lyapunov stability principle, system errors and derivatives of the system errors can be converged at the same time, and the upper bound of stabilization time is irrelevant to an initial value; and the stability of the fixed time synchronous controller is verified, and if verification passes, the fixed time synchronous controller and the sliding mode variable based on the neural network sign function are applied to the mechanical arm system.

This invention discloses a room-temperature self-healing electromagnetic shielding hydrogel composite material and its preparation method, belonging to the field of composite material technology. The composite material uses polyvinyl alcohol containing aryl indole groups and conductive materials as raw materials, and ferric chloride and borax as crosslinking agents. Based on the steric hindrance effect introduced by the large-volume groups and the multiple dynamic bonds constructed in the system, this invention enables the composite material to exhibit highly efficient self-healing ability, high mechanical strength, and excellent electromagnetic interference shielding performance at room temperature. Through repeated wetting and drying treatments, the electromagnetic shielding efficiency of the hydrogel can be reversibly switched between on / off states, making it suitable for applications in flexible electronics and intelligent shielding, thus solving the problem that traditional hydrogel materials struggle to simultaneously achieve self-healing performance, mechanical strength, and electromagnetic shielding effectiveness.

The invention provides a power system abnormal data recovery method and system considering time and precision priority, and belongs to the technical field of power data security. The method includes acquiring power data and judging whether abnormal values exist or not; obtaining quantized values of each abnormal value in two dimensions based on a safety protection level index and a response recovery level index to form a row vector, and further establishing a decision index matrix; determining a weight matrix by using an analytic hierarchy process; calculating a comprehensive score of each abnormal value based on the decision index matrix and the weight matrix; determining a priority label according to the comprehensive score and a threshold value, and performing label processing on each abnormal value in the power data set to obtain a data set with the priority label; recovering each abnormal value in the data set by adopting a recovery algorithm corresponding to the priority label to obtain a normal data set; the recovery algorithm comprises a high-precision recovery algorithm and a rapid recovery algorithm; and sending the normal data set to a data control center to provide a data source for real-time decision analysis of a subsequent power system.

The invention provides a main net rack reconstruction and load recovery implementation method based on a hydro-thermal power generating unit, and relates to the technical field of power systems, and the method comprises the steps: obtaining key parameters (voltage grade, structure, unit self-starting capability and the like) of a power grid; constructing an electromagnetic transient simulation model based on the information sorting unit capacity and the line length; performing overvoltage, unit paralleling and net rack reconstruction simulation through the model; further establishing a frequency response model, and simulating load recovery; and finally, according to a simulation result and actual scheduling data, a main net rack reconstruction and load recovery scheme is formulated and deployed to a power grid scheduling system. According to the method, blindness of a power grid dispatcher during power grid main grid structure reconstruction and load recovery in the power grid black start process is overcome, and the problem that the dispatcher makes a decision difficultly in the black start process is solved.

The invention provides a steam turbine thermodynamic system based on state reconstruction, a design method and an operation method.The thermodynamic system comprises at least one first acting cylinder body and at least one second acting cylinder body, and one first acting cylinder body and one corresponding second acting cylinder body form a reconstruction cylinder set; the reconstruction cylinder group is configured to control one acting cylinder body to be coupled into the thermal acting shaft system and the other acting cylinder body to be decoupled from the thermal acting shaft system based on a load working condition factor; by monitoring and controlling the load working condition factors, the acting cylinder body more suitable for the current load working condition is coupled into the thermal acting shaft system to play a better thermal effect, and the acting cylinder body not suitable for the current load working condition is decoupled from the thermal acting shaft system to realize more flexible load management and thermal efficiency optimization.

The invention discloses an intelligent switching system for food packaging and printing. The intelligent switching system comprises a multi-mode sensing unit, a prediction and control core, a dynamic response type actuator interface, a non-mechanical actuator module and an intelligent cleaning and maintaining module, instantaneous full-automatic switching among different product specifications, colors and processes is realized by regulating and controlling physical and chemical parameters of printing ink, jet printing behaviors and base material states in milliseconds. By the adoption of the scheme, the switching time can be shortened to 200-500 milliseconds from 15-45 minutes, the rejection rate is reduced to 0.1% or below, and the equipment efficiency and compatibility are remarkably improved.

The present invention provides a method and system for determining and analyzing group households based on a graphic database, comprising: step S1: using a data acquisition module to obtain data source information, and preprocessing the obtained data source information; step S2: based on the preprocessed data source information, using a data link construction module to construct links between group household entities; step S3: based on the constructed links, using a data model construction module to identify member information of the group household; step S4: using a calculation path algorithm module to traverse all links between group household entities and entities, and using a full path algorithm to calculate the indirect shareholding ratio and control between entities; wherein the data source information includes: entity information, entity type, relationship information and group vertex information.

The application discloses a microwave photon link with reconfigurable bandwidth and dynamic range and an implementation method thereof, wherein the implementation method comprises the following steps: generating an optical carrier by a laser and injecting the optical carrier into a double parallel Mach-Zehnder modulator, dividing the input end of the double parallel Mach-Zehnder modulator into two beams with a proportionally adjustable ratio, and respectively injecting the two beams into an upper side modulator and a lower side modulator of the double parallel Mach-Zehnder modulator; applying a radio frequency signal to the upper side modulator to modulate the injected optical carrier; the lower side modulator only performs carrier phase control; and performing direct current biasing on the double parallel Mach-Zehnder modulator by a bias control unit, and outputting a modulated optical signal. By adjusting the direct current biasing point of the upper side modulator and optimizing the optical power distribution ratio, the application can respectively realize the suppression of third-order intermodulation distortion and second harmonic distortion, realize two working modes of narrow-band large dynamic and ultra-wideband of the microwave photon link, and the two modes can be flexibly reconfigured.

This application relates to the field of industrial equipment design technology and discloses a modular and reconfigurable industrial equipment appearance design system, comprising: a hierarchical modular unit: used to receive industrial equipment appearance design requirements, divide the equipment appearance into a first-level basic module, a second-level functional module, and a third-level decorative module according to functional hierarchy, and output module division parameters to an interface adaptation unit; and an interface adaptation unit: used to receive the module division parameters output by the hierarchical modular unit, standardize the mechanical interfaces, electrical interfaces, and data interfaces of different level modules, generate an interface adaptation scheme, and transmit it to the module reconfiguration unit. This invention improves the customization efficiency and cost control capability of industrial equipment appearance. Through a hierarchical modular architecture and standardized interface design, it supports customers' personalized needs for appearance details such as brand logos, solving the problems of long customization cycles and high costs in traditional static design.

The invention relates to an efficient distributed video compressed sensing reconstruction system and method, and belongs to the technical field of image processing. According to the method, firstly, ISTA-Net + + is introduced into a distributed video compressed sensing system to carry out independent reconstruction and preliminary reconstruction on key frames and non-key frames, and intra-frame correlation is fully utilized; through the designed two-stage deep reconstruction network module, the inter-frame correlation is fully utilized to carry out deep reconstruction on the non-key frame. The deep reconstruction network module FMC-Net in the first stage performs motion compensation to obtain a preliminarily enhanced and reconstructed non-key frame; and the deep reconstruction network module FDR-Net in the second stage performs residual reconstruction by using the frame difference information so as to recover details and obtain a finally reconstructed non-key frame. According to the method provided by the invention, the reconstruction quality of the non-key frame can be remarkably improved, and high-quality video rapid reconstruction is realized.

The invention relates to the technical field of process forming, in particular to a small-size thin plate part punching forming device and a using method. The small-size thin plate part punching forming device comprises a containing frame tool and a cutting template. The containing frame tool comprises an upper die part and a lower die part, and the cutting template is detachably arranged on the lower die part; the upper die part comprises an upper die plate, a containing frame and polyurethane rubber arranged in the containing frame. The lower die part comprises a lower die plate, a platform plate and a fixing structure. And the fixing structure is used for detachably fixing the cutting template on the platform plate.

The present application relates to finite time reduced dimension observer design method and chaotic communication system, belong to information security and chaotic communication field. In view of the defects of traditional asymptotic observer slow, time is uncontrollable, sliding mode method exists chattering and message signal pollution output is difficult to construct observer, the present application establishes the chaotic drive system containing message signal embedding, constructs the equivalent system without unknown signal, designs finite time reduced dimension observer based on observer matching condition and strong observable condition. Compared with the traditional asymptotic convergence observer method, the present application can realize the complete synchronization of chaotic system within the user preset time, adopts continuous control law without chattering, and the message signal can be accurately recovered through algebraic formula. The synchronization time of the present application is controllable, the convergence speed is fast, the recovery precision is high, and the robustness is strong, which is suitable for various chaotic secure communication scenes, effectively improves the communication real-time, security and engineering practicability.

The present invention relates to a sparse signal reconstruction method based on a two-step deep expansion strategy, which belongs to the field of signal reconstruction technology and includes the following steps: S1: sparse input signal; S2: using the TwDU algorithm to improve the deep expansion model of the traditional sparse signal reconstruction algorithm; S3: using the improved sparse signal reconstruction algorithm to reconstruct and restore the original sparse signal. The present invention can make full use of the correlation between signals. Whether it is for a one-dimensional signal in wireless communication or a two-dimensional image signal, the method proposed by the present invention can reconstruct the signal faster and improve the reconstruction accuracy of the signal.

The invention discloses a solvent-free phenolated lignin-based polyurethane elastomer as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly preparing phenolated lignin with high phenolic hydroxyl content, then dispersing the phenolated lignin in polyol, and synthesizing the lignin-based polyurethane elastomer rich in dynamic phenolic carbamate bonds by adopting a one-step solvent-free method, so that the synthesis process is green and simple. The phenolated lignin has lower molecular weight, higher hydroxyl content and higher reaction activity, and the polyurethane elastomer synthesized by using the phenolated lignin has a dual dynamic cross-linked network consisting of a phenolic carbamate network and a hydrogen bond cross-linked network. The obtained solvent-free phenolated lignin-based polyurethane elastomer has excellent mechanical property, reprocessing property, photo-thermal self-healing property and thermo-oxidative aging resistance. The contradiction between the mechanical property and the dynamic mechanical property of the traditional polyurethane elastomer is solved, and a new thought is provided for developing the green and multifunctional polyurethane elastomer in the industrial field in the future.

The invention discloses an intelligent low-carbon cement component pouring forming system. The intelligent low-carbon cement component pouring forming system comprises a mold opening and closing mechanism, a mold, a pouring mechanism and a control unit. The mold is composed of two half molds, each half mold comprises a mold base and a module formed by splicing a plurality of replaceable modules, and an independently-controlled vibrator is integrated in each module. According to the system, the forming cavities in different shapes can be quickly reconstructed by replacing or recombining the modules, so that the flexibility and low-cost reuse of the mold are realized. And the control unit can perform independent and differentiated vibration control on the vibrator of each module according to the three-dimensional model of the component, so that the compactness and uniformity of the concrete are remarkably improved. A heating runner is integrated in the die holder, high-efficiency maintenance can be carried out by utilizing low-carbon heat sources such as waste heat, and an exhaust passage is arranged to balance internal pressure. The method has the characteristics of high production flexibility, excellent component quality, energy conservation and environmental protection, and is suitable for intelligent production of various prefabricated components.

The utility model relates to the technical field of LED display screens, and discloses a multi-angle adjustable LED display screen which comprises a support seat, a sliding seat, a rotating disc, a telescopic assembly and the like. The display screen support is characterized in that an adjustable supporting mechanism integrated in the support base can achieve the functions of transverse sliding, horizontal rotating and radial stretching and retracting, and the position of a display screen can be accurately controlled. The sliding seat can horizontally slide on the annular seat of the support seat, the rotating disc allows the telescopic assembly to rotate in the horizontal direction, and the LED display screen is fixed by the mounting groove in the vase through the magnet and the positioning pin, so that quick mounting and accurate positioning are ensured. A plurality of groups of adjustable supporting mechanisms are detachably mounted on the bracket seat, and a plurality of annular seats can be vertically overlapped to form 360-degree surrounding display.

This invention belongs to the field of inertial astronomical integrated navigation technology, specifically relating to a multi-source cooperative integrated navigation method based on inertial navigation system state awareness, comprising: S1, setting a main inertial navigation system and at least one sub-inertial navigation system in the integrated navigation system; S2, performing main-sub-inertial navigation system communication state detection, and adopting different processing strategies according to the length of the interruption when the main-sub-inertial navigation system communication is detected to be interrupted; S3, performing main-sub-inertial navigation system communication state detection, and performing fault self-reconstruction after the main-sub-inertial navigation system communication is restored; S4, performing main inertial navigation system navigation state detection within the sub-inertial navigation system, and designing filters within the sub-inertial navigation system based on the main inertial navigation system state, thereby enabling a multi-source cooperative integrated navigation method that can dynamically respond to the main-sub-inertial navigation system communication state, possesses fault self-reconstruction capability, and adaptability to state switching.

The present invention discloses a self-similar modeling and self-organizing hierarchical aggregation method based on CPS manufacturing components and a self-similar fractal reconstruction system for unmanned production lines. First, order task information is obtained; when the current production line state cannot complete the order task, the current unmanned production line is decoupled to obtain CPS manufacturing components of different levels; the order task is decomposed into several sub-processing tasks; a multi-level and multi-granular CPS manufacturing component that can complete the order sub-task is formed; the order task and the CPS manufacturing component are matched and combined to obtain a set of CPS manufacturing components that meet the requirements in the current state, forming an order-customized reconstruction production line. The method provided by the present invention is a method and system based on hierarchical digital twins, which realizes a self-similar fractal reconstruction manufacturing system driven by virtual-real fusion of man, machine, and object according to self-similar fractal theory and digital twin technology, so as to realize adaptive and rapid reconstruction of the production line when the current production line cannot meet production needs.

This utility model discloses a 6kW power collimation structure with a quick-connect connection structure for beam splitting lenses, belonging to the technical field of high-power laser equipment. The structure includes a main frame, and a QBH head, an aperture, a collimating lens, and a 45° beam splitter arranged sequentially along the optical path. To solve the heat dissipation problem under high power, a first water-cooling connector is provided on the side of the QBH head and the aperture, a second water-cooling connector is provided on the side of the collimating lens mount, and a third water-cooling connector is provided on the side of the beam splitter mount with a spiral groove at its bottom to assist heat dissipation. All water-cooling connector connections are sealed with rubber rings. By replacing the collimation height pad between the lens mount and the main frame, different collimation focal lengths can be accommodated. Each core component adopts a modular design and is quickly assembled into various structures such as F, L, Y, and T types through standardized mechanical interfaces for different application scenarios.

The application provides a steam turbine thermal system based on state reconstruction, a design method and an operation method. The thermal system comprises at least one first working cylinder and at least one second working cylinder. One first working cylinder and one corresponding second working cylinder form a reconstruction cylinder group. The reconstruction cylinder group is configured to control one working cylinder to be coupled into a thermal working shaft system and the other working cylinder to be decoupled from the thermal working shaft system based on a load condition factor. Through monitoring and controlling the load condition factor, the working cylinder more suitable for the current load condition is coupled into the thermal working shaft system to achieve better thermal effect, and the working cylinder unsuitable for the current load condition is decoupled from the thermal working shaft system to realize more flexible load management and optimize thermal efficiency.