762 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 virtual marshalling multi-train cooperative adaptive sliding mode control method based on an extended state observer, and the method comprises the steps: firstly constructing an urban rail multi-train tracking error dynamic model based on a unit train dynamic equation; secondly, establishing a nonsingular terminal sliding mode surface according to the urban rail multi-train tracking error dynamical model to obtain an equivalent control law, combining the equivalent control law with a switching control law to obtain a nonsingular terminal sliding mode control law, and introducing a gain adaptive law and a saturation function into the nonsingular terminal sliding mode control law to obtain an adaptive nonsingular terminal sliding mode control law; and finally, an extended state observer is adopted to estimate external interference, an observation value of the interference is added to the output of the adaptive nonsingular terminal sliding mode controller to serve as feed-forward compensation, and the adaptive nonsingular terminal sliding mode control method based on the extended state observer is constructed. According to the method, the multi-train cooperative operation tracking control precision and stability can be remarkably improved under the external interference condition.

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 discloses a navigation robot self-adaptive communication system and method based on multi-network collaboration, and relates to the technical field of network communication, the system comprises a network management module which is responsible for safely storing encrypted AP information and network topology data and providing a function of receiving AP configuration update through NFC; the signal detection module is responsible for detecting network parameters and generating a network quality evaluation report; the switching control module is responsible for predicting the signal intensity in future set time, realizing microsecond-level decision response by combining a dynamic threshold algorithm and a manufacturer protocol adapter, and providing a decision basis for optimization of network connection; and the dual-channel communication module is integrated with a WiFi chip and a cellular network modem, realizes operator link redundancy through dual SIM (Subscriber Identity Module) card slots, dynamically optimizes WiFi and cellular signal reception by utilizing a built-in intelligent antenna array, and executes network connection optimization and switching operation according to a decision of the switching control module. The navigation robot can automatically adapt to different network environments.

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 discloses an adjusting system for a gas helium cold screen in a vacuum tank and an application method, and particularly relates to the technical field of mechanical engineering, the adjusting system for the gas helium cold screen in the vacuum tank comprises an outer cold screen body and an inner cold screen body, and the outer cold screen body is formed by combining three outer cold screen single bodies. Through cooperation of the multiple positioning mechanisms and the multiple inner supporting mechanisms, the inner cold screen body can be limited and fixed in multiple directions, the positioning mechanisms and the inner supporting mechanisms can be rapidly separated from the inner cold screen body subsequently, the mounting and dismounting difficulty and the workload are reduced, the assembling efficiency is improved, and the assembling cost is reduced. Meanwhile, a trigger piece of the control mechanism can complete supporting and limiting of the inner cooling screen body, the trigger piece can conduct active switching control over the conveying state of the control mechanism, locking of the positioning mechanism and opening control over the inner supporting mechanism are completed, the control difficulty is reduced, meanwhile, multi-directional debugging and installation of the inner cooling screen body are completed through the control mechanism, and the debugging efficiency is improved. And the mounting precision is improved.

The invention relates to the technical field of source table control, and discloses a gear switching control method of a source table, the source table, a system and a medium, and the method comprises the steps: detecting a switching action triggered by a current user aiming at the source table; responding to the switching action, determining a switching type, and determining a target electronic device matched with the switching type; and calculating a target control parameter based on the key parameter corresponding to the target electronic device, and performing corresponding control on the source table based on the target control parameter. According to the invention, the source meter is realized in a digital loop mode, the target electronic device matched with the switching type in the digital loop is determined after the gear switching action of the source meter is triggered, and the switching of the voltage gear or the current gear of the source meter is completed through the actions of the target electronic device and the digital loop controller. And the output abrupt change of the source meter is suppressed through the digital loop, stable output of the to-be-tested equipment is kept, the control precision of the source meter is improved to a certain extent, and meanwhile, the test safety is also ensured.

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 discloses a port wharf quay crane control system and a computer program. The port wharf quay crane control system comprises a remote control center, an operation table connected with the remote control center and a single machine PLC arranged on a quay crane. The remote control center is provided with a remote control PLC, and the remote control PLC can distribute quay crane operation tasks; the single-machine PLC of the quay crane is connected with the remote control center; the remote control PLC and the single-machine PLC of the quay crane are provided with platform jumping request and release request interfaces; the operation platform controls the multiple quay cranes by switching the jumping platforms and releasing the jumping platforms. The operating platform is provided with an interactive interface, and a driver can control the quay crane to work through the interactive interface and check related information of the quay crane. According to the technical scheme provided by the invention, a plurality of operation platforms are switched to control a plurality of quay cranes, so that the utilization rate among a driver, the operation platforms and the quay cranes is maximized, the working efficiency is improved, and the operation cost is reduced; through the monitoring module and the talkback module which can be switched synchronously, a driver can check field conditions in real time, contact with field personnel and make corresponding treatment in time.

The invention discloses a multi-antenna test system, method and device and a storage medium. The system comprises a control computer, a vector network analyzer, a turntable controller, a turntable, a channel switching control device, a rotating device and a transmitting antenna. The vector network analyzer transmits a radio frequency signal to the transmitting antenna and receives test data of the antenna to be tested; the control computer processes and analyzes the test data; the turntable controller responds to a control signal of the control computer to control the turntable to rotate and control the rotating device to rotate; the transmitting antenna transmits a radio frequency signal to the to-be-tested antenna in a preset polarization mode; the rotary table is provided with a to-be-tested antenna and rotates within a preset angle range under the control action of the rotary table controller; the rotating device is provided with a transmitting antenna, and the polarization mode of the transmitting antenna is switched under the control action of the turntable controller; the channel switching control device switches the channel of the antenna to be tested. According to the invention, the channel of the to-be-tested antenna can be switched, and other antenna elements can be tested.

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.

A datacenter liquid cooling resource sharing system and process is presented that comprises two liquid cooling arrangements having a common liquid sharing support circuit between the two arrangements that incorporates respective first switchover control valves coupled to the forward cooling liquid supply and respective second switchover control valves coupled to the return heated liquid supply. In response to receiving data indicating a detected liquid flow failure, the first or second control module panels identify which of the forward liquid cooling circuits has detected a liquid flow failure, shut down the respective forward cooling liquid circuit and return heated liquid circuit, open the first switchover valve to route a suitable portion of the cooling liquid flow from the operational forward liquid circuit to the failing forward liquid circuit, and open the second switchover valve to route a suitable portion of the heated liquid flow from the failing return liquid circuit to the operational return liquid circuit.

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 relates to a switching control method, a function network element, a communication system and electronic equipment, and relates to the technical field of satellite communication. The switching control method is executed by a first functional network element, and comprises the following steps: receiving a switching target determination request sent by a second functional network element, the switching target determination request comprising position information of user equipment, a service time range and an identifier of a currently accessed satellite; according to the position information of the user equipment, the identifier of the currently accessed satellite and the change information of the topological structure of the satellite network, determining one or more target satellites for continuous switching of the user equipment within the service time range; and sending a handover target determination response to the second function network element, the handover target determination response comprising the identifiers of the one or more target satellites, so that the second function network element controls handover of the user equipment according to the identifiers of the one or more target satellites.

The invention provides a ring network communication redundancy control method and device, electronic equipment and a readable storage medium, and relates to the field of vehicle-mounted communication. The method comprises the steps that nodes in a vehicle-mounted looped network system can be controlled to detect the abnormal state of an Ethernet link and broadcast the abnormal state based on CAN communication, a master control node can judge whether to switch a redundant link or not according to the abnormal state of the link related to each node, and if switching is needed, a switching control message is broadcast based on CAN communication; and each node can adjust the port setting according to the switching control message. Ethernet link detection and redundant link switching control are realized based on Ethernet communication, and the functions of judging whether to switch the link according to the abnormal state of the link and broadcasting the switching control message are integrated in the master control node, so that the requirements on nodes except the master control node are relatively low; therefore, the requirement of a vehicle-mounted ring network communication redundancy control scheme on node hardware resources can be reduced, and compared with an existing scheme, the vehicle-mounted ring network communication redundancy control method is simpler and easier to implement and higher in usability.

A source radio access network node may determine to implement a network energy saving mode with respect to one or more user equipment being served by a beam. The node may configure the user equipment with a handover control channel resource usable by the user equipment to determine scheduling information usable by the user equipment to retrieve a handover information message. The handover information message may comprise a list of potential target nodes and a list of user equipment to be handed over to a target node. A user equipment may determine whether to monitor the handover control channel resource based on whether a handover criterion is satisfied. The user equipment may initiate handover to a target node if the user equipment is indicated in the handover information message or if the handover criterion is violated. The user equipment may transmit, to the source node, a handover success message.

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.

A source radio access network node may determine to implement a network energy saving mode with respect to one or more user equipment being served by a beam. The node may configure the user equipment with a handover control channel resource usable by the user equipment to determine scheduling information usable by the user equipment to retrieve a handover information message. The handover information message may comprise a list of potential target nodes and a list of user equipment to be handed over to a target node. A user equipment may determine whether to monitor the handover control channel resource based on whether a handover criterion is satisfied. The user equipment may initiate handover to a target node if the user equipment is indicated in the handover information message or if the handover criterion is violated. The user equipment may transmit, to the source node, a handover success message.

The invention relates to a channel synchronous switching method in a large-scale matrix switch based on an asynchronous bus, and the method comprises the steps: adding a NOR gate in a control circuit of a matrix board card, and constructing an RS422 bus and SPI hardware bus circuit containing synchronous switching control enabling; the matrix device sends I / O data to the matrix board card through the RS422 bus, and the matrix board card receives the I / O data; and the matrix equipment sends a'switching preparation ' / 'synchronous switching' instruction through the RS422 bus, and the matrix board card opens the synchronous switching control enabling or closes the synchronous switching control enabling. By adding special logic control and utilizing rising edge of a data start bit of a serial RS422 bus and synchronous switching control to enable cooperative control, switch synchronous switching of a plurality of matrix board cards under a plurality of non-synchronous microprocessors is realized, the routing switching time of a large-scale matrix is improved to an ns level from a us level, and the routing switching efficiency of the large-scale matrix is improved. When a large-scale matrix switch carries out channel routing switching, signal receiving and demodulation are not affected, and the channel is lossless and non-inductive.

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 embodiment of the invention provides a state control method and system of a controller, and relates to the technical field of new energy automobile charging. A mode of combining local wake-up and network wake-up is adopted, and flexible switching between a dormant state and a standby state of each controller is realized. The state control method of the controller is applied to a first controller unit of a state control system of the controller, the state control system of the controller further comprises a vehicle control unit (VCU), and the first controller unit comprises a vehicle-mounted charger (OBC) and a second controller which communicates with the OBC based on the architecture of the first controller unit. The method comprises the following steps: when a first controller unit acquires a connection signal between power supply equipment and the local through the OBC, sending a network management message to a second controller through the OBC to wake up the second controller; and feeding back a message signal to a vehicle control unit (VCU) through a local state mechanism fed back to the VCU after the second controller responds to the network management message to enter a standby state.

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 present application relates to a multi-channel analog signal testing device and a testing machine, the device comprising: a control switch; more than two analog signal output channels, each analog signal output channel is connected to a device under test through a corresponding control switch, and outputs an analog signal to the device under test; more than two analog signal acquisition channels, each analog signal acquisition channel is connected to the device under test through a corresponding control switch, and receives an analog signal fed back by the device under test. The analog signal output channel and the analog signal acquisition channel are respectively connected to the device under test through corresponding control switches, and different channels can be connected to the device under test at the same time by switching the control switch, so as to perform multi-channel synchronous testing, thereby improving the test efficiency.

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.