345 results about "Handoff control" patented technology

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 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.

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 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 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 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 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.

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 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 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.

The invention discloses an intelligent switching control electrician practical training identification device, which belongs to the technical field of electrical detection and comprises a practical training platform, an operation panel, an electrical carrier plate and a built-in PLC (Programmable Logic Controller), the system integrates power input, a first conversion unit composed of a first isolation transformer and a first contactor, a second conversion unit composed of a second isolation transformer and a second contactor, a control unit, a data storage module, an operation input unit, a feedback unit and a load output unit. A dual-safety interlocking structure combining software interlocking and contactor hardware interlocking is realized through a PLC, and two paths of power outputs cannot be switched on at the same time. The device has the functions of intelligent mode switching, real-time voltage monitoring, fusing and sudden stop dual protection, operation state feedback and practical training data storage, meets industrial-grade and safety-grade practical training requirements, is compact in structure and high in safety, supports closed-loop control and data tracing, and is suitable for modern electrician skill training and intelligent examination and identification.

The invention discloses a smooth transition method and system for sensorless field directional control, and relates to the technical field of permanent magnet synchronous motor sensorless control. According to the method, an error between an I-f starting virtual synchronous reference coordinate system and a sensorless observer estimation coordinate system is eliminated through a dual-core mechanism of a robust transition strategy and a position error compensation strategy, and then rotor position deviation caused by non-ideal factors is corrected through an exclusive compensation module; the system constructs a multi-stage switching control framework based on the method, and seamless transition from I-f open-loop starting to sensorless FOC closed-loop control is achieved. Complex parameter adjustment is not needed, transition is fast and stable, torque magnetic flux control precision can be optimized, copper loss is reduced, system efficiency and robustness are improved, and the method is suitable for industrial driving scenes such as air conditioner compressors.

The invention provides a train handover control method based on prediction enhancement. The method comprises the following steps: training a wireless communication quality parameter prediction model by using a time sequence data set to obtain a trained multivariable time sequence prediction model, predicting time sequence data of a time point of a future time step length, and generating state data of a future time window; the method comprises the following steps: constructing an actor-commentator framework comprising a strategy network and a value network, iteratively training a deep reinforcement learning decision model by utilizing the actor-commentator framework based on historically collected experience training data, updating parameters of the strategy network and the value network by adopting a near-end strategy optimization algorithm through minimizing a composite loss function, and obtaining the value of the strategy network and the value network. The training is converged, and a trained deep reinforcement learning decision model is obtained; and the trained deep reinforcement learning decision model is utilized to control the train to execute a handover action in actual operation. The stability of the train system is improved, and the communication service quality under high-speed movement of the train is guaranteed.

The invention provides a system, method and device for updating FPGA firmware online. The method comprises the steps that a processor module outputs a control signal of a first level state to a switching control module through a universal input and output interface; the switching control module responds to the control signal of the first level state and establishes a first communication path between the serial peripheral interface of the processor and the storage module; writing the update data stream into the storage module through the first communication path; after the update data stream is written, establishing a second communication path between the FPGA module and the storage module; and the processor module sends a start loading command to a configuration register of the FPGA module, and triggers the FPGA module to read and load the update data stream from the storage module through the second communication path so as to complete online update of firmware. According to the method, the equipment maintainability in a scene with high reliability requirements is improved, the operation and maintenance cost and the time overhead are remarkably reduced, and meanwhile, the continuity and the availability of key system services are ensured.

A double-control fault-tolerant control method, system and device for steer-by-wire and a storage medium relate to the field of automobile steer-by-wire, and specifically comprise the following steps: when a mainboard is detected to have a slight fault, the control right is switched from the mainboard to a slave board, and the mainboard is controlled to be restarted; in the slave plate control stage, a first real-time transmission ratio corresponding to a slave plate is determined based on real-time parameters, and the real-time parameters comprise the real-time vehicle speed and the real-time steering angle rate; after the main board is restarted, the main board receives the real-time parameters sent by the slave board and calculates a second real-time transmission ratio corresponding to the main board; and whether consistency verification of the torque and the transmission ratio is carried out or not is judged based on the real-time parameters, and switching control over the control right is carried out according to a consistency verification result. According to the invention, stable back-switching of the main controller can be ensured.

The invention discloses a permanent magnet synchronous linear motor self-adaptive fuzzy terminal sliding mode control system, a self-adaptive fuzzy terminal sliding mode controller further comprises a switching control law module, the switching control law module outputs a self-adaptive fuzzy switching control law, and the self-adaptive fuzzy switching control law comprises a switching gain, an adaptive fuzzy terminal sliding mode, an adaptive fuzzy terminal sliding mode and an adaptive fuzzy terminal sliding mode. The corresponding switching gain is adjusted along with the change of the sliding mode surface, and the convergence speed corresponding to the position difference and the speed difference is controlled within the finite time; according to the method, better dynamic performance is provided, and singularity points can be eliminated while the convergence speed of the system is ensured; fuzzy control and sliding mode control are combined, and the chattering phenomenon generated by sliding mode control is restrained. Through fusion of adaptive control and fuzzy nonsingular fast terminal sliding mode control, parameters are optimized and adjusted in real time, and robustness is enhanced, so that control precision is improved, influence of unknown external disturbance is reduced, and uncertainty generated by load change is reduced.

The invention discloses a multi-level streaming media cascading and cluster scheduling system and a multi-level streaming media cascading and cluster scheduling method. The system comprises a source station node, a scheduling node, an edge node and a state bus, wherein the nodes are interconnected through QUIC protocol channels; the source station node releases an original media stream, writes metadata of the original media stream into the state bus through the cluster plug-in, and broadcasts a media stream release event to the scheduling node; the scheduling node carries out registration management and API proxy on the multi-level nodes, and carries out scheduling and switching control on the media stream service according to a subscription request of the edge node; the edge node responds to a request service of the monitoring terminal, provides a media stream service, and carries out state reporting, upstream acquisition and service switching under the control of the scheduling node; and the state bus manages the operation state of each node in a centralized manner. According to the invention, low-delay back-to-source and switching can be realized, the streaming media delay performance is improved, the resource utilization rate is improved, and centralized and efficient state synchronization is realized.

The application discloses a center and vehicle base field regulation control right switching method, relates to the field of train control, and comprises the following steps: the control mode of the ATS field regulation workstation in the vehicle base includes the following modes: central control mode, station control mode and emergency station control mode; the control mode switching of the ATS field regulation workstation can be executed at the center dispatching workstation, the ATS field regulation workstation and the present site control workstation; when the ATS field regulation workstation is in the central control mode, the control right of the vehicle base can be switched between the center dispatching workstation, the ATS field regulation workstation and the present site control workstation, and the corresponding control mode switching is performed by the side where the control right is located; and the application solves the conflict between the working duty and the system permission division of the full-automatic operation system when multiple field dispatchers exist in the center and the field section.

The invention relates to the technical field of HID peripheral connection, in particular to a switching control method and device for HID peripherals among different system devices, equipment and a storage medium, and the method comprises the steps: virtualizing the HID peripherals as virtual nodes in main control system equipment; establishing a communication route between the virtual node and other preset system equipment; wherein the main control system equipment is in communication connection with the other system equipment, and a first equipment system carried by the main control system equipment is different from a second equipment system carried by the other system equipment. According to the method and the device, when the HID is externally arranged among different system devices for switching, the hardware cost is prevented, and the switching efficiency is improved.

The invention relates to the technical field of vehicle control, and discloses a vehicle control method, a vehicle domain controller, a vehicle and a storage medium. The vehicle domain controller comprises an MCU, a first SOC, a second SOC and a switching chip, and the method comprises the steps that the MCU is started in response to a power-on signal for the vehicle domain controller; carrying out power-on and initialization configuration on the switching chip, and determining a target SOC which needs to be started at present; the target SOC comprises at least one of the first SOC and the second SOC; and controlling the target SOC to be powered on, and indicating the target SOC to establish a data channel after being powered on. The first SOC, the second SOC and the switching chip are controlled in a unified mode through the unique MCU, the integration level of a hardware system can be improved, cost reduction is achieved, the MCU does not need to transfer or switch the control right, and the complexity of a control strategy can be reduced.

Embodiments of the present disclosure provide a signal measurement method and apparatus, a storage medium, and an electronic device. The method comprises: determining the range to which a transmitted signal received by a terminal device from a base station belongs, and on the basis of a receiver state corresponding to the range, measuring a serving cell corresponding to the terminal device to obtain a measurement result, wherein a first coverage range is the service range where a low power wake-up receiver (LR) is located, a second coverage range is the service range where a main radio unit (MR) is located, and the transmission power of the transmitted signal is configured by the base station; and on the basis of the result of comparison between the measurement result and a threshold configured by the base station, generating a handover control instruction for the terminal device, and handing over to the range on the basis of the handover control instruction.

Disclosed is a method for handover control for a user apparatus 10 that is communicating with two nodes 20, 22 using different radio access technologies (RATs). When the apparatus receives conditiona

The invention relates to a hybrid commutation converter control system and a main / standby switching method thereof, and belongs to the technical field of converters. The priority of the VBE self-checking signal and the priority of the HCC operation mode signal are considered, whether switching is needed or not is judged according to the VBE self-checking signal of the system and the VBE self-checking signal of the system, on the basis that the VBE self-checking signal is normal, the HCC operation mode signal is newly added for switching control, and whether switching is needed or not is controlled according to whether the HCC operation mode signal is normal or not. According to the invention, the main / standby switching of the HCC converter control system is realized, the system can be maintained to operate in the HCC mode as far as possible under the condition that the system does not exit operation, and the capability of the hybrid commutation converter for resisting commutation failure in the HCC mode is fully exerted, so that the impact of the commutation failure on an alternating current power grid is effectively reduced, and the reliability of the system is improved. The method has very high engineering application value.

The application provides an automated test bench for multi-device testing and a testing method thereof, and relates to the technical field of device testing. The automated test bench comprises a test bench main body, at least two groups of controller interfaces, at least two groups of driver interfaces and a control panel arranged on the test bench main body. Each controller interface is connected to a programmable logic controller, each driver interface is connected to a driver, the control panel comprises a controller selection switch selected from the at least two groups of controller interfaces as a test interface, a driver selection switch selected from the at least two groups of driver interfaces as a test interface and a switching control module. The switching control module turns on the power loop of the selected controller interface and the driver interface and the signal path between the two, so that the externally connected driver and programmable logic controller can participate in the test. The application solves the problems of fixed matching of the test bench, inability to simulate actual working conditions and mixed use of multi-brand devices.