481 results about "Handoff control" patented technology

The invention discloses an intelligent cooperative switching control system and method for multi-path valve runners, and the method comprises the steps: collecting all-condition operation data of a multi-path valve system, extracting valve switching characteristic parameters, and building a runner mapping relation between paths; a cascade action chain containing time sequence dependence is constructed based on the mapping relation and the switching characteristics, and the action sequence and the trigger condition of each drift diameter are determined; by analyzing the pressure distribution and the flow velocity change in the cascade action chain, predicting the water hammer strength and designing a reverse pressure wave parameter, and generating a water hammer counteracting control instruction; high-low pressure area distribution in the flow field is identified, a flow field complementary cooperation scheme is constructed, and a pressure balance control strategy is generated; analyzing a pressure wave propagation path to determine a superposition elimination point, extracting pressure pulse resonance characteristics and generating time sequence control parameters; and the sequential control parameters are matched with the cascade action chain, synchronous control nodes are determined through delay compensation, and a time-sharing control sequence is generated to achieve intelligent cooperative switching of the multi-drift-diameter valve flow channels.

The invention discloses a branch topological structure automatic switching control method and system based on load balancing, and relates to the technical field of automatic switching control, and the method comprises the following steps: obtaining working condition data, and constructing a joint map; extracting a power conduction path from the trunk node to each load node based on the joint map to form a high-load segment set; aiming at the high-load transmission segment, constructing a multi-target switching feasibility set, and generating a coupling relation mapping graph; based on the coupling relation mapping map, constructing a path search model, and solving an optimal topology switching path by adopting an enhanced iterative algorithm; and generating a topology switching sequence according to the optimal topology switching path, and implementing power transfer regulation and control on a high-load transmission section. According to the method, the joint atlas is constructed, the optimal topology switching path is generated, local overload is effectively relieved, power fluctuation is weakened, and the overall load balancing level and the active regulation and control capability of the system are improved.

The invention relates to the technical field of industrial distributed control system architecture, and discloses a dual-redundancy design method for a virtual controller VDPU, which comprises the following steps of: deployment of a four-network-port redundant network architecture: dividing four physical network ports into two groups of independent channels, and simultaneously configuring a network link automatic switching mechanism, the working states of the four network ports are monitored in real time, then double isolation of a physical layer and a protocol layer is achieved, and an independent heartbeat transmission channel is established; main / standby heartbeat monitoring and switching control: the main / standby controller periodically interacts state information packets through a special heartbeat channel, and establishes a three-level fault determination mechanism at the same time to perform seamless main / standby switching; a multi-mode data synchronization mechanism is implemented, namely initialization synchronization, increment synchronization during operation and exception recovery synchronization are started, separation of heartbeat signals and data synchronization can be realized through two groups of independent channels, and the fault-tolerant capability and the switching efficiency of the system are improved, so that the operation stability of the system is guaranteed.

The invention provides a communication module low-delay switching control method based on HPLC and HRF, and relates to the technical field of data processing, and the method comprises the following steps: when an index continuously exceeds a dynamically adjusted judgment threshold, a switching judgment unit generates a mode switching enable signal, and initializes an HRF channel pre-synchronization sequence; based on a pre-stored HRF channel feature vector table, HRF channel negotiation and authentication handshake processes are executed in parallel while HPLC link state monitoring is maintained; through a dual-channel redundancy transmission mechanism, the key fault information is packaged into a final priority protocol data unit before the establishment of the HRF link is not completed, and redundancy forwarding is carried out through a reserved time slot window of the HPLC link; and after the handshake of the HRF link is completed, the switching control unit executes seamless switching of the data transmission channel. According to the invention, the accuracy of channel state judgment is improved.

The invention relates to the technical field of communication, in particular to a USB-A interface and serial port dynamic switching and protection system based on an analog switch. Comprising a main control unit, the main control unit is used for planning dynamic switching and conflict coordination of a USB-A interface and a serial port as a whole, generating a conflict-free channel switching control instruction by integrating a dynamic priority scheduling algorithm and combining a USB data transmission real-time load, a serial port communication request emergency degree and a device historical interaction record fed back by a state detection unit, and sending the conflict-free channel switching control instruction to the state detection unit; the analog switch unit is driven to complete channel gating; an analog switch unit; a grading protection unit; a protocol adaptation unit; and a state detection unit. Priority scheduling is carried out by means of the main control unit in combination with multi-dimensional parameters such as the transmission load of the USB-A interface and the communication emergency degree of the serial port UART, communication channels of the USB-A interface and the serial port can be flexibly switched, the flexibility and adaptability of interface switching are enhanced, and the problem of switching limitation caused by a single triggering condition is solved.

The invention discloses a standby power supply intelligent monitoring and switching control system and method based on the Internet of Things, and relates to the technical field of standby power supply intelligent switching, and the method comprises the following steps: setting an optimal reference switching time threshold in combination with the historical operation data, load characteristics and technical specifications of standby power supply switching; an initial secure handover period is defined. According to the invention, the key jump from timed switching to state sensing driving switching is realized, so that the system can comprehensively sense the phase synchronization state between the main power supply and the standby power supply before switching, and the phase jump trend is dynamically predicted and intelligently judged in combination with a machine learning model; therefore, impact current, equipment damage and regional tripping risks caused by forced switching due to inconsistent phases are effectively avoided, and the safety, the accuracy and the intelligent level of the switching process of the standby power supply are remarkably improved.

The invention relates to the technical field of intelligent control, and particularly discloses a servo control method and a servo control system for a fast door, and the method comprises the following steps: a multi-modal data fusion step: collecting a mechanical state, an environment parameter and system health data, and constructing a multi-dimensional state vector; a self-adaptive control step: dynamically generating control parameters based on fuzzy PID and a deep learning model; a multi-stage energy consumption optimization step: switching a control strategy according to the operation stage of the door body, and introducing a regenerative braking and energy efficiency optimization algorithm; and a fault self-healing step: realizing control switching in an abnormal state through sensor redundancy and actuator backup. Compared with traditional single closed-loop control, the positioning precision is improved, and the anti-interference capability is improved through fusion of the mechanical state and the environmental data.

This invention provides a method, apparatus, electronic device, and readable storage medium for redundancy control in ring network communication, relating to the field of vehicle-mounted communication. The method includes: controlling nodes in the vehicle-mounted ring network system to detect abnormal Ethernet link states and broadcast these states via CAN communication; a master control node can determine whether to switch redundant links based on the relevant link abnormal states of each node; if switching is required, a switching control message is broadcast via CAN communication; and each node can adjust its port settings based on the switching control message. By implementing Ethernet link detection and redundant link switching control based on Ethernet communication itself, and by integrating the functions of determining whether to switch links based on abnormal link states and broadcasting switching control messages into the master control node, the requirements for nodes other than the master control node are reduced. This lowers the hardware resource requirements of the vehicle-mounted ring network communication redundancy control scheme compared to existing solutions, making it simpler, easier to implement, and more usable.

The invention discloses a wireless authentication and privacy infrastructure (WAPI) seamless roaming optimization system and method for a mobile scene. Data collaboration and intelligent decision are realized through a three-layer structure of a mobile terminal, a WAPI access point and a switching control center. A mobile terminal collects a motion state and channel information in real time, a WAPI access point monitors a wireless condition in an area while meeting a WAPI security authentication requirement, a switching control center integrates data of all parties, a candidate access point utility value is dynamically calculated through a built-in strategy decision unit by adopting reinforcement learning, cognitive radio and robust control technologies, and the candidate access point utility value is calculated through a wireless network. Therefore, optimal roaming switching is realized. A pre-authentication and certificate caching mechanism is introduced into the system before switching, so that the authentication time delay is greatly reduced, and stable network connection and seamless transition during high-speed movement are ensured. According to the invention, the structure is simple, the adaptability is high, the WAPI security requirement is met, and the network roaming performance in a mobile scene is remarkably improved.

The invention discloses a network following and network construction control switching method, device, equipment, medium and product, and the method comprises the steps: when all buses of a transformer substation of a power grid system are detected not to operate, controlling the power grid system to operate in a network construction control mode; and when it is detected that at least one bus of the transformer substation of the power grid system operates, according to the effective short-circuit ratio corresponding to the bus, it is judged that the power grid system is controlled to operate in a network following / constructing control mode. The control mode can be automatically switched on the basis of a network following and network constructing dual-control framework, the operation requirements of the power grid in various scenes of a strong network, a weak network and an isolated network can be met, and safe and stable operation of a direct current project and a power grid system is ensured.

The invention discloses a water pump control method, device and equipment for production, a medium and a product, and relates to the technical field of pump station control. The method is executed by a central control host of a water pump control system for production, and comprises the following steps of: sorting according to water pump operation parameters, a water pump water inlet pressure value and a water pump water outlet pressure value which are received in real time in a current latest time period to obtain multi-dimensional time sequence data of a current online water pump; secondly, the time sequence data are imported into a water pump fault probability prediction model which completes pre-training based on a time sequence model, and the probability that the current online water pump breaks down in the current next time period is output and obtained; and generating a water pump switching control instruction used for indicating to stop the current online water pump and start the current offline water pump, and finally transmitting the control instruction to the pump station control cabinet for execution, thereby reducing the fault probability of the whole pump station in a multi-water-pump parallel use scene of the pump station.

The invention relates to the technical field of permanent magnet synchronous motors, and particularly discloses a permanent magnet synchronous motor low-buffeting terminal sliding mode control method based on adaptive disturbance compensation, comprising the following steps: S01, redefining a motor rotational inertia mathematical model; s02, improving a traditional nonsingular fast terminal sliding mode surface based on nonlinear system representation, and constructing a novel dynamic gain nonsingular fast terminal sliding mode surface; s03, performing derivation on the novel dynamic gain nonsingular fast terminal sliding mode surface, and combining a derivation function with nonlinear system representation to obtain an equivalent control law ieq; and S04, adopting an exponential reaching law isw as a switching control law of the sliding mode controller, and obtaining a novel different fast terminal sliding mode controller model according to an equivalent control principle in combination with the equivalent control law ieq and the exponential reaching law isw. The invention aims to improve the tracking response speed of a position instruction during servo control of the permanent magnet synchronous motor.

The invention relates to the technical field of automatic focusing control, and discloses a rotary objective switching control method and system, a storage medium and a processor, and the method comprises the following steps: obtaining the actual position of an objective turntable based on a magnetic encoder, carrying out curve planning according to the actual position information, and carrying out the open-loop control of a motor to drive the objective turntable to rotate; and after entering a set error range of the actual position and the target position, ending curve planning and starting closed-loop control, and based on a relation model of deviation weight vectors of the actual position and the theoretical position of the magnetic encoder at the zero point and a motor output weight vector, controlling a motor to output pulses according to deviation so as to realize switching and positioning of the rotary objective lens. According to the scheme, the turntable end magnetic encoder is adopted for positioning, locking is carried out based on a fuzzy control strategy after curve planning is finished, the clamp spring only plays a role of a damper and does not need to be positioned, and the precision requirement of the clamp spring and the equipment manufacturing cost are reduced.

The invention discloses a switching control method based on SPWM soft start and a pulse type load LLC resonant converter. The converter mainly comprises an LLC resonant converter, an H-bridge inverter circuit and a load of the H-bridge inverter circuit, and the control method comprises the following steps: setting k-level SPWM modulation in a starting stage to realize smooth soft start of output voltage (k is any positive integer); the load state is accurately judged through an H-bridge switching logic unit, and Burst intermittent control and linear frequency control are adopted for no-load and full-load in a steady state respectively; during load switching, a nonlinear SOTC optimal trajectory controller is adopted to perform two-pulse optimal control, so that the state is transited to a new mode along the shortest trajectory, and a dynamic response optimizer is introduced to compensate the switched frequency according to the state radius error so as to suppress secondary voltage fluctuation. The problems of slow dynamic response, large output voltage fluctuation and the like when traditional linear control faces a pulse type load LLC resonant converter are solved, and the stability and the anti-interference capability of the output voltage of the system are improved.

The invention discloses an air-ground amphibious platform cross-domain mode switching control method and device, a medium and a product, and relates to the field of mode switching control. The method comprises the following steps: acquiring disturbance information data of an air-ground amphibious platform; the disturbance information data comprises environment disturbance data and cross-domain disturbance data; constructing an air-ground integrated control model; the air-ground integrated control model is a kinetic model constructed according to a Newton-Euler equation; performing cross-domain modal identification based on the disturbance information data and the air-ground integrated control model to obtain an identification result; and according to an identification result, a stable control algorithm is adopted to carry out composite control so as to realize cross-domain control of the air-ground amphibious platform. The invention aims to realize stable control of mode switching.

The invention discloses a remote control system of a PLC (Programmable Logic Controller) control cabinet, which relates to the technical field of remote control of PLC control cabinets and comprises a path identification module, a path evaluation module, a signal cleaning module, a switching control module and a state connection module, the path evaluation module collects control state information of each output path in the to-be-released path set, is used for evaluating the non-released degree of each output path, and divides each output path into three types of paths which can be directly switched, paths which need to be switched after being cleared and paths which are forbidden to be switched according to an evaluation result; and the signal cleaning module is used for executing corresponding residual signal cleaning operation on all the output paths which are divided into the paths which need to be switched after being cleaned, and performing dynamic regulation and control in the operation process. According to the method, the problems of equipment failure and system instability caused by the fact that residual signals are not cleared away in time during PLC control logic switching are solved, and the safety of the system is ensured through accurate classification, dynamic clearing and intelligent switching.

The invention belongs to the technical field of aircraft control system design, and particularly relates to a dual-redundancy steering engine controller switching control method, switching control is achieved through three FPGA logic processing modules including an FPGA 1, an FPGA 2 and an FPGA 3, the FPGA 1 controls main and standby control boards, the FPGA 2 controls three main driving boards, the FPGA 3 controls three standby driving boards, and the situation that overall work is abnormal due to the fact that one device breaks down is avoided. And the full duplex 422 bus and the CAN bus are used for feeding back the control current and voltage, the power current and voltage, the temperature signal, the position signal and the overcurrent signal acquired by the signal feedback circuit. The main drive control circuit and the standby drive control circuit share states and check each other through dual-computer communication 422, and can detect each other and automatically switch when a fault occurs in a certain redundancy.

The invention discloses a serial port switching control circuit, a serial port switching control method and a server, and relates to the technical field of servers, through cooperative work of a cache module, an output control module and a switching module, when a hot key switching signal is detected, a data output path is cut off immediately, a hot key code stream is prevented from being transmitted to an upper-layer system in an unvarnished manner, and the switching efficiency is improved. And system abnormal response and serial interface messy codes are effectively avoided. And after the switching is completed, recovering the data path, and transmitting the cached serial port data. According to the design, the problem of signal interference during serial port switching is solved from the hardware level, and the reliability and stability of multi-node debugging of the artificial intelligence server are remarkably improved.

The invention discloses a multi-access network intelligent selection system and method in a 5G network environment, and the system comprises a multi-network state sensing module, a service feature recognition module, an intelligent access decision module, a network switching control module, and a strategy updating and learning module. According to the present service type and service quality demand dynamic optimization, communication performance and user experience are considered, an access decision-making mechanism with an adaptive learning capability is constructed, experience can be accumulated along with time, a strategy can be continuously optimized, the frequency and cost of network switching are controlled, the communication continuity is ensured, unnecessary switching risks are reduced, and the network switching efficiency is improved. The method is suitable for various actual scenes such as a 5G mobile terminal, a vehicle-mounted communication device and an industrial terminal, the communication performance and the overall use experience of the terminal device in the 5G environment under the multi-network access condition are effectively improved, and a basic support is provided for achieving heterogeneous network convergence and intelligent communication.

A system and method allowing a group of WTRUs in a group to be handed over in a coordinated manner are disclosed. The system and method include procedures for handling mobility and handover for a subset of WTRUs or all WTRUs belonging to a group, considering application layer requirements. Included procedures enable a single WTRU within a group of WTRUs to trigger handover for other WTRUs within the group. The system and method include procedures enabling a single WTRU to act as an anchor WTRU for handover control messages, allowing it to override handover messages sent by the network, allowing one WTRU in a group to coordinate handovers for all or a subset of WTRUs.

The embodiment of the invention provides a switching control method, device and equipment for a cloud platform management node. The method comprises the following steps: acquiring state data of a cloud platform management main node; when the state data is a fault, selecting a new cloud platform management main node from at least two groups of cloud platform management backup nodes; the virtual IP address of the original cloud platform management main node is bound with the new cloud platform management main node, and routing redirection is completed; controlling the task of the original cloud platform management main node to be switched to the new cloud platform management main node for processing; and controlling the cloud platform management main node and the cloud platform management backup node to keep data synchronization. According to the embodiment of the invention, the new master node is selected from the at least two groups of backup nodes, the selected new master node is ensured to be in a normal state and have enough resources, and new problems after switching are avoided.

The invention relates to the technical field of wireless communication and terminal network access control, and discloses a CPE (Customer Premise Equipment) signal adaptive enhancement and link switching method and a CPE signal adaptive enhancement and link switching system. According to the method, combined characteristics reflecting short-time quality drop amplitude, error code burst degree, time delay bursting degree and apparent strength level can be included, so that the shielding shadow and multipath illusion can be distinguished in a scene in which the shielding and strong reflection of the steel structure coexist, and the multi-path illusion can be distinguished on the premise of not depending on multi-source data. A small amount of key link observation data is organized into fingerprint representation with scene identification capability, and a basis is provided for subsequent enhancement and switching control. Therefore, the link shadow fingerprint is introduced, so that the link control process has the capability of identifying the special phenomenon that the apparent signal is strong but the actual error code is burst, and the switching decision and the enhanced control form collaborative management, thereby reducing the error switching, reducing the switching jitter and improving the service continuity.

The invention relates to the technical field of switch control, and provides a switch channel switching method and system, terminal equipment and a storage medium. According to the switch channel switching method, a control board, at least one function board and at least two radio frequency switch groups are included, a control output port of the control board is connected with a control input port of the function board, and an output interface of the function board is connected with a control pin of the radio frequency switch group. Comprising the following steps: receiving channel switching control information through a control panel; processing the channel switching control information through the control board to obtain a control signal, and transmitting the control signal to the radio frequency switch group after the control signal is subjected to preset processing through the function board; according to the technical scheme of the invention, the radio frequency switch group completes the switching of the switch channels according to the control signal which is preset by the function board, so that the equipment control difficulty can be effectively reduced, and the equipment stability can be improved.

The invention discloses a communication device, a communication control method, an electronic device, a medium and a program product, and relates to the technical field of communication, by adopting the technical scheme provided by the invention, a target physical layer device is directly connected to a first multiplexer instead of being directly connected to a complex programmable logic device serving as a control element, so that the communication efficiency is improved. Therefore, when a plurality of physical layer devices need to be managed, a large number of MDIO pins do not need to be arranged on the control element so as to support switching control of MDIO signals. Therefore, the technical problem of shortage of pin resources and logic unit resources faced by a complex programmable logic device can be solved, and the technical effects of remarkably reducing the system cost and facilitating commercial application of products are achieved.

A vehicle-mounted relay device for relaying Ethernet frames includes a plurality of PHY units corresponding to a plurality of vehicle-mounted devices, a switch unit to which the plurality of PHY units are connected, and a control unit configured to monitor operating states of the plurality of PHY units. The plurality of PHY units include a predetermined PHY unit whose operating state switches between a sleep state and an active state in response to reception of a predetermined control signal that differs from the Ethernet frames. When an Ethernet frame to be transmitted from the predetermined PHY unit has been detected during a period where the predetermined PHY unit is in the sleep state, the control unit executes switching control to switch the predetermined PHY unit to the active state.

The invention relates to the technical field of motor control, in particular to a three-phase brushless direct-current fan control system based on an MCU and an FOC, which comprises a sampling module, an MCU control module, a PWM driving module, an interruption module and a control protection module, and is characterized in that the sampling module is used for converting an analog signal into a digital signal and inputting the digital signal into the MCU control module; the MCU control module is used for executing an FOC algorithm to generate PWM waves; the PWM driving module is used for controlling the three-phase inverter according to the generated PWM waves; the interrupt module is used for realizing main algorithm execution operation and state machine switching of the MCU control module; and the control protection module is used for monitoring the state of the control system in real time and executing corresponding protection measures when a fault occurs. Therefore, the problems that an existing control system is large in torque pulsation, high in noise and low in efficiency, and an existing FOC technology is high in cost, large in resource occupation and the like are solved.

The invention discloses an energy consumption switching control method. The method comprises the following steps: determining a real-time working state of target equipment; determining a target power consumption mode of the target equipment based on a real-time demand operation instruction and the real-time working state; and switching and / or controlling and adjusting the working state of the target equipment based on the target power consumption mode. The power consumption mode of the device is dynamically adjusted through the real-time working state of the target device and the external demand instruction, the power consumption mode can be dynamically adjusted based on the real-time working state of the device and the external demand instruction, efficient operation of the device is ensured, energy waste is avoided, and energy efficiency is optimized.

A hinge of flexible screen mobile terminal includes a central support frame, left and right support arms, and left and right screen support mechanisms. The central support frame includes a fixed frame and left and right switching connection structures located on either side of the fixed frame, with the left and right support arms rotatably connected to the fixed frame. The left and right screen support mechanisms are respectively rotatably connected to the left and right switching connection structures, and the hinge switches control structures for the left and right switching connection structures. The hinge structure allows transitions from inward folding to unfolding, flattening, and continuing rotation to outward folding, as well as from outward folding to unfolding, flattening, and continuing rotation to inward folding. The overall motion range can be 360° or an angle less than 360° (e.g., 300°), meeting the motion requirements of flip-type flexible screen mobile terminals.

The invention discloses a dual-mode voice transmission method and system based on star flash and Bluetooth, and the method comprises the steps: S1, building a connection between a voice remote controller and an intelligent set top box through a Bluetooth protocol, and generating a Bluetooth connection state; s2, establishing connection between the voice remote controller and the adapter through a star flash protocol, and generating a star flash connection state; s3, according to the control mode selected by the user, the voice remote controller records and encodes voice data, and transmits the voice data to the intelligent set top box through Bluetooth or transmits the voice data to the adapter through star flash; s4, if in the set top box control mode, the intelligent set top box decodes and processes the voice data, and generates an instruction to control the set top box; if in the television control mode, the adapter decodes the audio data and then transmits the audio data to the smart television, and the television processes the voice data and executes corresponding operation. Therefore, the user can freely switch the control modes according to requirements, the operation flexibility is improved, the control process is simplified, and the use convenience and the user experience are remarkably improved.

The invention discloses a satellite-ground enhanced signal conversion method and a satellite-ground enhanced signal conversion model based on PPP-RTK, which are used for solving the problems that conventional RTK in a ground-free network area fails, and satellite-based PPP-RTK depends on a special terminal and is slow in convergence. Generating an RTCM-OSR correction number by analyzing the SSR correction number, fusing the orbital clock correction, ionosphere and troposphere correction and performing weighted interpolation; the ambiguity is solved in combination with the observation value of the base station, dual-path verification and weighted fusion are carried out in combination with M-W and LAMBDA algorithms, and the wide lane ambiguity fixing reliability is improved; and when the ground-based signal is interrupted for more than 1 second, inheriting and maintaining Kalman filtering continuity by using the state vector and generating a switching identifier. The model integrates a signal processing module, a correction generation module, an ambiguity verification module and a switching control module, so that a conventional RTK terminal obtains centimeter-level positioning (level 2.3 cm and elevation 4.1 cm) without a public network, the interruption recovery is less than or equal to 1.5 seconds, and the scene upgrading cost of power inspection, power transmission monitoring, wind power plant monitoring and the like is reduced.