63 results about "System Fault Tolerance" patented technology

The invention provides a complex task multi-agent collaborative disassembling method and system based on a business process, and relates to the technical field of artificial intelligence, and the method comprises the steps: constructing a graph through analyzing a business process document, matching a complex task with a process node, identifying a closed loop dependence path, and selecting an agent based on a constraint logic formula. And establishing a causal tracing chain to process abnormal conditions, and performing semantic alignment to ensure data transmission between subtasks. According to the method, the automation degree and the execution efficiency of multi-agent cooperative processing of complex tasks are improved, and the fault-tolerant capability of the system and the reliability of task completion are enhanced.

The invention relates to the technical field of industrial robot control, and discloses a single-connecting-rod mechanical arm system fault-tolerant asynchronous control method based on double-variable decision, which comprises the following steps: establishing a semi-Markov jump system dynamic model for describing the operating characteristics of a single-connecting-rod mechanical arm; based on the dynamic model, designing a fault-tolerant asynchronous controller structure based on a double-variable decision and an experience-machine cooperative operation strategy; establishing sufficient conditions which enable the closed-loop system to be randomly stable and meet H infinity performance indexes; and the numerical value of the gain of the machine controller is obtained by solving the linear matrix inequality set, and a final control law is generated to conduct fault-tolerant asynchronous control on the single-connecting-rod mechanical arm. According to the fault-tolerant asynchronous control method for the mechanical arm, fault-tolerant asynchronous control of the mechanical arm is achieved through a double-variable decision and an experience-machine cooperation strategy in combination with modal transfer rate boundary processing, and the random stability and the H-infinity performance of the system are guaranteed under the modal mismatching and fault working conditions.

The invention discloses a group scheduling control method and system for a PCS energy storage system, relates to the technical field of group scheduling of energy storage systems, and solves the technical problems of insufficient SOC balance regulation and control accuracy and weak capacity proportion distribution fault-tolerant capability. The SOH correction coefficient is accurately calculated through the linear relation, it is ensured that the PCS with the high health degree and the large capacity preferentially undertakes the balancing task, the weak health battery is effectively protected, the cycle life of the battery is prolonged, multiple screening constraints of the available PCS are defined, and according to the size relation between the exceeding power and the total redundant power, a capacity proportion or redundant power proportion distribution strategy is adopted, so that the capacity of the PCS is effectively protected. Reasonable power distribution and no equipment overload risk are ensured, the power distribution deviation after the fault of a single PCS can be reduced, and the fault-tolerant response speed of the system is improved.

The invention discloses a multi-modal stability identification and evaluation method and system for a transformer substation monitoring system. The method comprises the following steps: evaluating static model vulnerabilities in a system configuration file based on the transformer substation monitoring system; dynamically linking a transformer substation monitoring system through an application system, performing application function test on the monitoring system by utilizing a dynamic linkage test case, and performing dynamic vulnerability evaluation on the model; and monitoring system application function module faults through verification function logic, memory leakage, alarm coverage rate and system fault tolerance verification, and carrying out positioning inversion. Technical difficulties existing in application scenes such as equipment research and development, network access detection, transformer substation design, factory joint debugging, field debugging, operation and maintenance and the like of an intelligent transformer substation monitoring system can be taken as entry points, and model vulnerability detection, data flow section detection and function and performance defect testing can be carried out; and a defect panoramic evaluation means suitable for a novel power system intelligent substation monitoring system is formed.

This invention provides a multi-agent cooperative underwater logistics system and method based on reinforcement learning, applicable to the fields of underwater robot cooperative control and intelligent logistics technology. The system integrates six modules: task management, multimodal communication, cooperative localization, path planning, energy management, and fault handling. Through a dynamic switching mechanism in multimodal communication, it adaptively selects between acoustic, optical, and magnetic induction modes to ensure communication reliability in underwater environments. A distributed cooperative localization method based on dynamic weights is employed, optimizing weight allocation by considering communication quality, battery power, and computing power to achieve cooperative localization. A multi-agent reinforcement learning controller with a multi-branch attention mechanism is introduced to achieve real-time obstacle avoidance, formation maintenance, and task-oriented cooperative path planning. An intelligent charging strategy based on multi-level battery thresholds and task urgency supports continuous system operation. A sliding window fault detection and adaptive task reassignment mechanism enhance the system's fault tolerance and robustness.

The invention discloses a driving circuit with IGBT (Insulated Gate Bipolar Translator) fault diagnosis and protection, which can realize synchronous and independent control driving according to driving requirements and module faults through a switchable driving circuit. The fault detection circuit detects the operation state information of the power module to judge whether the module has a fault and judge the fault type at the same time, and executes a protection strategy. When a plurality of IGBTs connected in parallel work at the same time, a plurality of power modules are driven to work at the same time through the push-pull amplification circuit post-stage. When a certain module breaks down but still needs small current output in a short time, single power module output can be switched, meanwhile, the three-phase driving mode is switched to single module output, and output consistency is guaranteed. The method solves the problems that a parallel IGBT system is poor in fault tolerance, high in fault misjudgment rate, insufficient in long-term reliability and the like, is suitable for the fields with high reliability requirements, such as new energy automobiles, aerospace power supplies and the like, and has industrialization popularization potential.

Disclosed are a method for initializing a controller area network interface, an electronic device, and a robot. The method for initializing a controller area network interface provided by the present disclosure is suitable for interface initialization in the CAN bus communication scenario of an industrial robot. By adopting a multi-source hierarchical configuration analysis mechanism, the priority of configuration sources such as environment variables and command line parameters is determined, CAN interface zero-configuration deployment is achieved, and the configuration flexibility and environment adaptation capability are greatly improved. By introducing a state-aware redundant configuration skipping mechanism, the current state of the interface is queried during initialization, unnecessary repeated operations are skipped, hardware loss and initialization delay are reduced, and system startup efficiency is improved. The method has a graceful degradation strategy, and in a multi-interface scenario, the failure of partial interface initialization does not block the overall service startup, thereby improving the system fault tolerance and operation stability. Meanwhile, by adopting an initialization strategy with fixed interval retries, the method avoids the endless loop caused by the failure of initialization due to temporary faults.

The invention relates to a system fault-tolerant degree estimation method considering professional performance, belongs to the technical field of fault-tolerant analysis, and solves the problem that the actual fault-tolerant capability of a system under different degradation levels is difficult to accurately evaluate due to the lack of comprehensive consideration on the degradation degree of professional performance of the system in the prior art. The system fault tolerance estimation method comprises the following specific steps: step 1, constructing a professional performance margin model of a system according to a subject crossover equation, a degradation equation and a margin equation; step 2, acquiring first wearing time according to professional performance allowance of the system; step 3, obtaining professional performance fault tolerance of the system based on the reliable degradation time range of the system determined during first wearing; and 4, carrying out approximate solution on the professional performance fault tolerance of the system to obtain the professional performance fault tolerance concerning the degradation time under the discrete condition.

This invention relates to the field of distributed storage technology and provides a data collaboration method and system for distributed transaction terminals. The method involves each transaction terminal performing erasure coding on its local ledger data to generate a set of data fragments consisting of original data fragments and verification data fragments. These data fragments are then distributed and stored across different transaction terminals according to distributed storage rules, and the terminals exchange online status and fragment integrity information. When a request to access the target ledger is received, the terminal storing its fragments is located based on the ledger identifier, and the fragments are retrieved in parallel to reconstruct the target ledger. When a terminal is detected to be offline or a fragment is corrupted, online terminals collaborate to reconstruct the original data using surviving fragments, re-encode new fragments, and distribute them to healthy terminals. This invention, through erasure coding and distributed collaborative storage, reduces storage overhead while improving system fault tolerance and data availability, achieving efficient and reliable distributed ledger data collaborative management.

The application relates to the computer technical field, in particular to a system fault-tolerant test method, an electronic device and a storage medium. In the system fault-tolerant test method, the function characteristic type information and the disaster simulation program are acquired first, then the cloud platform system to be tested is divided into levels based on the function characteristic type information, a cloud system hierarchical model corresponding to the cloud platform system is obtained, further, a data disaster environment is simulated in the cloud system hierarchical model based on the disaster simulation program, finally, the cloud system hierarchical model in the data disaster environment is tested for fault tolerance, and fault-tolerant indexes corresponding to the cloud platform system are obtained. Through the system fault-tolerant test method, the data disaster of the cloud platform system is simulated based on the cloud system hierarchical model, so that the fault-tolerant indexes of the cloud platform system are obtained through the fault-tolerant test, and the fault-tolerant indexes of the cloud platform system can be more accurately measured.

The application relates to the field of integrated circuits, in particular to a multi-stage threshold watchdog circuit based on temperature compensation and a control method and chip device thereof. The circuit comprises a watchdog counter for outputting a count value; a temperature compensation calculation unit for dynamically compensating a count threshold of the watchdog counter based on a current temperature value collected, a temperature-frequency characteristic curve of a clock source and a compensation mode; and a state machine for outputting a corresponding control signal based on a comparison result of the count value and the count threshold. The application avoids the false triggering / missing triggering of the watchdog reset caused by the frequency temperature drift of the clock source, improves the timing accuracy of the watchdog, enhances the fault tolerance of the system and improves the reliability of the system.

The embodiment of the invention provides a resource providing method and device, equipment and a readable medium. The method comprises the following steps: receiving a user request for a target resource; determining a providing state of a target resource stored in a content delivery network CDN; and in response to the provision state of the target resource stored in the CDN indicating that the target resource cannot be provided, requesting the corresponding user to provide the target resource to the user through a first path corresponding to the cloud storage service or a second path corresponding to the local storage service. In this way, the stability and availability of the resource management system can be improved, the fault tolerance and maintainability of the system can be improved, and the user experience can be improved.

The invention discloses a multi-modal document information extraction method, system and equipment and a storage device, which are corresponding schemes, in the scheme, structured analysis of document content and Schema-oriented information extraction can be supported under a unified framework, and through a confidence-driven model cascade mechanism, the consumption of computing resources is reduced, and the processing efficiency is improved; through an evaluation-verification-correction closed-loop mechanism, the structural compliance of an information extraction result and the fault-tolerant capability of the system are enhanced; through a long-term memory architecture based on vectorization representation, empirical multiplexing and dynamic adjustment of a processing strategy are supported, the response speed and decision reasonability are improved, and stable operation in a repetitive service scene is particularly facilitated. The scheme can be widely applied to business requirements of performing automatic structured processing on unstructured documents in the fields of finance, law, scientific research and the like, and has good engineering practicability and popularization value.

The application discloses a kind of multi-agent system fault-tolerant control methods under actuator failure, first construct the linear multi-agent system mathematical model of introducing actuator multiplicative fault and additive fault to describe the influence of actuator failure on control input, based on the communication topological relationship of system, construct a consistent error dynamic equation, for describing the change of each agent state error with time, finally design fixed gain fault-tolerant controller based on the multi-agent system mathematical model, realize multi-agent system fault-tolerant control.The method of the application has the advantages of simple controller structure, strong adaptability, low implementation cost, high communication efficiency, etc., can be widely applied to unmanned aerial vehicle formation, robot cooperation, sensor network and other multi-agent system fault-tolerant control scene, has good engineering application value and popularization prospect.

This invention provides a distributed short-link resource management and fault-tolerance method and system based on a two-layer pool architecture, aiming to solve problems such as resource contention, cursor consistency, and insufficient system fault tolerance in short-link resource management in a distributed environment. The method includes creating a public short-link pool table and setting an auto-incrementing primary key and unique index to construct a public short-link pool as a central storage repository; replenishing resources in the public short-link pool through distributed lock control and batch write operations; creating a private short-link pool based on a concurrent linked list queue in the memory of each service instance, monitoring capacity through scheduled tasks and retrieving short links in batches to achieve short-link storage; establishing a dual-storage cursor mechanism to monitor cursor positions in real time and perform anomaly detection and self-repair; and achieving local persistence and fault tolerance processing for the private short-link pool. This invention achieves hierarchical management of short-link resources and local persistence through a two-layer pool architecture, improving system stability under abnormal conditions.

The invention discloses a multi-node-based double-loop underwater information acquisition and transmission device, and belongs to the technical field of ocean monitoring and underwater communication. The acquisition and transmission device comprises an acquisition node module used for receiving and processing underwater sound signals, a main node module used for sending a link synchronous clock, a relay node module used for forwarding data, a photoelectric conversion module used for converting data signals, and a bridging module used for issuing commands and processing and reporting data. The underwater information acquisition and transmission system with high fault tolerance, low transmission delay and strong anti-interference capability is constructed by introducing a multi-node cooperation mechanism and a double-loop redundancy structure, so that the defects of the existing underwater information acquisition system in the aspects of communication stability, data transmission reliability, system fault tolerance, multi-node cooperation efficiency and the like are overcome; and efficient, stable and reliable data acquisition and transmission in a complex underwater environment are realized.

The invention provides a time-triggered Ethernet synchronous compression weight progressive compensation method, and belongs to the technical field of deterministic networks. According to the method, a compression function weight value is designed during compression function calculation, different calculation weights capable of dynamically correcting and compensating are set for different SM, and the robustness of the system is improved; the compression function weight can be dynamically and stably corrected according to the synchronization precision of the SM by designing a period adjustment threshold parameter, and the network synchronization precision stability is improved; a weight adjustment coefficient is designed, the weight value of the compression function of the SM which is poor in time precision or has a fault is gradually and dynamically reduced, the influence of the fault on the synchronization stability of the whole network system is reduced, and the fault tolerance performance of the system is improved. The time-triggered Ethernet switch weight correction method is suitable for time-triggered Ethernet switch development, and the weight correction method has universality, can be transplanted to various time-triggered Ethernet products, and has wide application prospects.

The utility model discloses an adaptive fault tolerance and information reading circuit of RS 485 bus communication adopts singlechip, RS 485 communication transceiver, display screen and other key components, realizes the automatic switching of A, B line in 485 communication through singlechip control relay, and utilizes display screen real -time display equipment information. Effectively avoid the communication failure of A, B line connection mistake, improve system fault tolerance, guarantee 485 communication quality, simplify the step of viewing 485 bus equipment information simultaneously, provide strong support for the stable operation of communication system in the field such as industrial control, have good practicality and popularization and application value.

The application discloses a kind of declarative HTTP client implementation method and device supporting dynamic routing, belong to distributed service communication technical field.The method mainly includes: generating interface metadata set by scanning declarative interface annotation, and creating dynamic proxy object based on the set;Abstract HTTP request template is constructed by using proxy object to parse URL template, request parameter and request body;Abstract service name is replaced by specific instance address by combining routing strategy and service instance information, to form complete HTTP request;The asynchronous sending and responsive receiving of request are integrated by non-blocking HTTP client implementation;Finally, service fuse protection is realized by combining retry strategy and circuit breaker through exception capture mechanism.The application effectively improves the development efficiency of HTTP call between microservices, routing flexibility and system fault tolerance by the fusion of declarative programming model and dynamic routing mechanism.

The utility model discloses a flight control structure and an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles, the flight control structure comprises a circuit board and a standby bonding pad, the standby bonding pad is arranged on one side of the circuit board, and the standby bonding pad is used for providing additional circuit connection. According to the technical scheme of the utility model, the standby bonding pad is arranged, so that even if the socket is accidentally damaged, the standby bonding pad can continue to work, and the flight control structure can be welded with the standby bonding pad and is matched with the electronic speed regulator for use, thereby ensuring the continuous operation and stability of the unmanned aerial vehicle and improving the fault-tolerant capability of the system.

The application relates to a quadrotor unmanned aerial vehicle scheduled performance sliding mode fault-tolerant control method with external disturbance and actuator failure, which designs a position loop controller and an attitude loop controller through an adaptive control method, and a disturbance observer is adopted in the attitude loop to estimate unknown external disturbance. The method can accelerate the convergence speed of the system, constrain the transient state performance of the system, effectively improve the fault-tolerant capability of the system, and has good robustness and anti-interference capability.

The invention discloses a method for evaluating the reliability of a switched reluctance generator system based on a hybrid model. According to the method, rapid and accurate acquisition of junction temperatures of devices at different positions of the power converter is realized by constructing a cauer thermal model of the power converter, and then the failure rate of the devices is accurately calculated. In order to improve the accuracy of system evaluation and reduce the complexity of reliability evaluation, a 1-out-of-1: G model is adopted to comprehensively evaluate the overall reliability of the switched reluctance generator, the detection unit and the power converter. Meanwhile, in order to bring the fault-tolerant capability of the system into a reliability evaluation system, fault modes of the three parts are deeply analyzed, and reliability modeling is carried out on the switched reluctance generator, the detection unit and the power converter by using a Markov state transition diagram. According to the method, by synchronously considering the thermal stress characteristic and the fault-tolerant mechanism of the driving system, the accuracy and comprehensiveness of reliability evaluation of the system are remarkably improved.

The invention provides a distributed short-chain resource management and fault-tolerant method and system based on a double-layer pool architecture, and aims to solve the problems of insufficient resource competition, cursor consistency, system fault-tolerant capability and the like in short-chain resource management in a distributed environment. The method comprises the following steps: creating a public short chain pool table, setting a self-increasing primary key and a unique index, and constructing a public short chain pool serving as a central storage warehouse; resource supplement of the public short chain pool is realized through distributed lock control and batch write-in operation; creating a private short chain pool based on a concurrent linked list queue in a memory of each service instance, monitoring the capacity through a timed task, and getting short chains in batches to realize short chain storage; establishing a dual-storage vernier mechanism, monitoring the vernier position in real time, and performing anomaly detection and self-repairing; and local persistence and fault-tolerant processing of the private short chain pool are realized. According to the method, short-chain resource layered management is realized through a double-layer pool architecture, local persistence is realized, and the stability of the system under an abnormal condition is improved.

The present application relates to the technical field of mold manufacturing and forming control, and particularly relates to a complex reverse buckle demolding method for oil cylinder row position coordination. The method first defines the physical constraints between execution units through a preset interference matrix, and constructs a state feature vector containing pressure, displacement and spatial distance. Then, an optimization algorithm is used to dynamically generate an optimal execution sequence, with the goal of maximizing the spatial avoidance safety margin and resistance smoothness. During the execution process, the system extracts the motion envelope surface in real time to monitor the instantaneous spatial distance, and initiates the ejection action under the condition of meeting the parallel constraint condition. At the same time, a PI control model integrated with feedforward correction is adopted to adjust the ejection speed in real time according to the instantaneous demolding resistance and core-pulling residual displacement. The present application effectively solves the problems of action coordination difficulty and stress concentration in the demolding process of complex reverse buckle structure, and significantly improves the demolding efficiency and system fault tolerance capability under the premise of ensuring the safety of thin-walled structure.

The invention provides an off-line double-recording real-time verification method and device, and the method comprises the steps: preloading and caching a certificate picture, face feature data and a voice recognition model resource, and achieving the incremental updating through a version control mechanism; constructing a dialect adaptive word library, and dynamically expanding a homonym matching library based on salesman answer word frequency analysis and manual quality inspection feedback data; monitoring network signal intensity in a recording process in real time, and when a continuous weak network state is detected, triggering visual early warning and prompting network switching; and carrying out real-time same-frame detection on the recorded picture by adopting a locally deployed face recognition algorithm, judging the identity consistency of the personnel according to a preset similarity threshold, and generating a verification result. Continuous recording and real-time quality inspection of the insurance double-recording process can be realized in a network-free or weak network environment, the influence of network fluctuation on voice broadcast, voice recognition and face verification is effectively reduced, and the fault tolerance and compliance verification efficiency of the system are improved.

The invention relates to the technical field of signal transmission, and discloses a system fault tolerance control method and device, equipment and a medium, and the method comprises the steps: carrying out the system detection of a plurality of system function levels of a to-be-detected system, and obtaining a system fault phenomenon of the to-be-detected system; performing fault reason analysis on the to-be-detected system according to the system fault phenomenon, and determining a system fault reason of the to-be-detected system; based on the system fault reason of the to-be-detected system, adopting a fault-tolerant control measure aiming at the system fault level to perform hierarchical fault-tolerant control on the to-be-detected system so as to eliminate the influence of the system fault phenomenon on the to-be-detected system; wherein the system fault level is a system function level corresponding to the system fault reason, and the fault-tolerant control measures are progressive step by step based on the corresponding system function level. The fault-tolerant control method has the beneficial effects that the fault-tolerant control measures are taken according to the system fault levels with fault causes to perform hierarchical fault-tolerant control, so that the processing efficiency of system fault phenomena is effectively improved, and the stable operation of the to-be-detected system is ensured.

The invention discloses a declarative HTTP (Hyper Text Transport Protocol) client implementation method and device supporting dynamic routing, and belongs to the technical field of distributed service communication. The method mainly comprises the steps that an interface metadata set is generated by scanning declarative interface annotations, and a dynamic proxy object is created based on the set; analyzing the URL template, the request parameter and the request body by using the proxy object, and constructing an abstract HTTP request template; in combination with a routing strategy and service instance information, replacing the abstract service name with a specific instance address to form a complete HTTP request; the integrated non-blocking HTTP client realizes asynchronous sending and responsive receiving of a request; and finally, service fusing protection is realized by combining an exception capture mechanism with a retry strategy and a circuit breaker. According to the method, through fusion of the declarative programming model and the dynamic routing mechanism, the development efficiency of HTTP calling between micro-services, the routing flexibility and the system fault-tolerant capability are effectively improved.

The application discloses a kind of motor propulsion system fault-tolerant control methods under ship power grid, comprising: acquisition stator voltage, frequency, DC bus voltage, rotor three-phase current, get rotor current component and speed information in synchronous rotating coordinate system by coordinate transformation, and calculate voltage variation and change rate in sliding window, realize voltage sudden drop / sudden rise detection and fault classification;Based on the discrete prediction model of DFIM, construct MPC rolling optimization problem, write rotor current, output voltage, DC bus voltage and electromagnetic torque change rate constraint explicitly into constraint set, and reconstruct cost function weight and constraint upper limit online according to fault level;Sliding surface is constructed with rotor current tracking error as core and sliding mode compensation term in the form of saturation function is introduced, to form the synthesis control law.The application can significantly reduce rotor current impact and DC bus overvoltage probability, improve the fault ride-through capability and recovery smoothness of DFIM under ship power grid disturbance.

The invention discloses a reinforcement learning-based multi-agent system from a natural language to a query language, and belongs to the technical field of artificial intelligence and database query. The system comprises a master control Agent and a plurality of sub-Agents, the master control Agent is used for analyzing natural language query of a user, analyzing entities, relationships and business logics related to the query, determining a query range based on a database mode, and dynamically scheduling one or more sub-Agents to execute a cross-database query task; each sub-Agent is bound to a specific database instance (including a relational database, a graph database and a document database), and conversion, execution and self-correction from a natural language to query languages such as SQL, GQL and MQL are independently completed. Through a parallel scheduling mechanism and a result fusion strategy, the problems of insufficient compatibility of multiple databases, unstable query statement generation quality and the like are effectively solved, and the accuracy of natural language query and the system robustness are remarkably improved. The method is high in robustness, has self-correction circulation, and improves the fault-tolerant rate of the system.