75 results about "Handoff control" patented technology

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.

A kind of plane connecting rod end effector switching control method and system based on deviation and load state belong to motion adjustment control technical field.The method includes: obtaining target trajectory, current control mode, current target load level and safety threshold;Real-time acquisition of end execution point actual position, actual speed, drive joint state and drive load information;According to trajectory deviation, load state and abnormal duration determine current control state;In recoverable deviation state, execute first-level regulation, in protection control state, execute second-level regulation;When continuously meet recovery condition, restore autonomous tracking control mode, or execute autonomous tracking control mode with recovery target load level.The present application can improve trajectory stability, regulation continuity and operation safety margin of end effector in man-machine collaborative motion.

An apparatus for use by a communication element or function configured to perform multi-connection communication in a communication network, wherein at least two communication links are used to form communication paths by at least two different cells formed by at least one network element or function, the apparatus comprising: at least one processing circuit, and at least one memory for storing instructions to be executed by the processing circuit, wherein the at least one memory and the instructions are configured, together with the at least one processing circuit, to cause the apparatus to at least: determine to execute a link failure recovery process for a first communication link to a first cell; detect that conditions are met for executing a conditional cell change process for a second communication link to a second cell, the conditional cell change process being executed during the link failure recovery process for the first communication link; execute processing for controlling the timing of at least one of the link failure recovery process for the first communication link and the conditional cell change process for the second communication link; and execute at least one of the link failure recovery process and the conditional cell change process based on the result of the processing for controlling the timing.

A method and associated apparatus provide for a management node to send to a terminal node, a negotiation request used to update a receiving / sending switching interval to first switching time. The receiving / sending switching interval includes a first receiving / sending switching interval of the management node and a second receiving / sending switching interval of the terminal node. The terminal node receives the negotiation request, feeds back acknowledgment response information to the management node in response to the negotiation request, and updates the second receiving / sending switching interval to the first switching time. The management node receives the acknowledgment response information. The management node updates the first receiving / sending switching interval to the first switching time based on the acknowledgment response information.

This invention discloses a sensorless switching control method based on a variable parameter model reference adaptive system, relating to the field of permanent magnet synchronous motor (PMSM) control technology. Traditional switching control methods for PMSMs suffer from problems such as large speed fluctuations, severe voltage and current overshoot, high computational resource consumption, and complex engineering implementation when the position sensor fails. This invention employs a sensorless algorithm based on a variable parameter model reference adaptive system and designs a staged switching control strategy. By optimizing key parameters such as the adaptive law PI parameters, demodulation value weights, and switching delay time, a smooth switching between sensor-on and sensorless control is achieved. This invention significantly reduces speed fluctuations, voltage and current overshoot, and improves motor operation stability and reliability while requiring relatively little processor memory and computational resources. It is applicable to PMSM drive systems in civilian and military fields.

This application provides a hardware module, a virtualized time-sharing control method, apparatus, and related equipment. The hardware module includes: a processing unit, configured to, upon receiving a termination command from upper-layer software, process the currently pending instructions and then feed back first notification information indicating that tenant switching is possible to the upper-layer software; and a timer, connected to the processing unit, configured to start timing upon receiving the termination command and, upon receiving a second notification information from the processing unit, feed back the timing duration to the upper-layer software, so that the upper-layer software subtracts the timing duration from the current tenant's next time slice. This application's solution can guarantee fairness in the use of the hardware module by all tenants overall, and eliminates the need to add "command-based switching" support to the hardware module. This effectively reduces the development cost of the hardware module, improves development efficiency, and to some extent reduces the area overhead of the hardware module.

A control system on a material transfer vehicle includes a path planning system that plans a path from the material transfer vehicle to a container, and a navigation system that navigates the material transfer vehicle along the navigation path. An auto unloading system automatically controls the material transfer vehicle as it approaches the container, positions itself closely proximate the container, and unloads material into the container. A handoff control system uses position-based criteria to determine when to switch from controlling the material transfer vehicle using the path planning system to controlling the material transfer vehicle using the auto unload system. The handoff control system generates a control signal triggering the auto unload system to begin controlling the material transfer vehicle when the position-based criteria are met.

The application discloses a high-speed mode switching control system for a wide-input multi-mode ZVS-Buck converter, and belongs to the technical field of high-power-density power converters and power management, comprising a control circuit and a driving circuit, wherein the control circuit comprises a logic control circuit and a mode control circuit, wherein the logic control circuit comprises an inductor current sampling module, an output voltage sampling module, a compensation network module, two comparison modules, two timers, three dead-time modules and a flip-flop; the mode control circuit comprises two conduction time detection modules, a switching frequency detection module, two flip-flops and a logic AND gate. The application effectively adopts CrCM mode, DCM mode and COT mode, improves the efficiency under full load conditions, and significantly improves the dynamic response performance based on the mode switching method of conduction time or switching frequency detection. The application realizes fast mode switching when the load changes by detecting the conduction time or the switching frequency.

This invention relates to the field of wind power converter control, and provides a method and system for switching control between black start and islanded operation of a wind power converter. Before responding to a closing command, the method first predicts the new steady-state operating point to be reached after load connection, including steady-state values ​​such as PCC voltage and converter output current, based on the electrical parameters of the load to be connected. Then, it calculates the corresponding state values ​​that the integrators of the voltage and current loop PI controllers inside the converter should possess at the new steady-state operating point. Finally, at the instant the circuit breaker closing signal is issued, these pre-calculated integrator state values ​​are synchronously preset into the controller's integrator. In this way, the controller's internal state is already near the new steady state at the moment of load connection, thus skipping the transient process of response lag and error accumulation in traditional PI controllers, achieving a smooth transition from no-load to loaded, and effectively suppressing voltage and frequency surges during the switching process.

The application discloses a kind of frequency and system switching control method, device, equipment and medium, the switching control method includes obtaining the RSRP data, SINR data and RSRQ data of cell;RSRP data, SINR data and RSRQ data of cell are substituted into voice MOS fitting model, and the predicted value of cell user voice MOS is obtained;The voice MOS fitting model is built according to RSRP historical data, RSRQ historical data, SINR historical data and voice MOS historical data;The predicted value of cell user voice MOS is compared with preset threshold value, if the predicted value of cell user voice MOS is less than preset threshold value, then frequency switching or system switching is executed, so that when 5G user voice service perception is poor, frequency system switching process is initiated in advance, and user is guided to switch to the 5G frequency cell of more optimal MOS value, improves 5G user VoNR voice service perception, simultaneously avoids because voice service perception deterioration causes network problems such as call drop, word swallowing, guarantees the continuity of 5G user VoNR voice service.

The application discloses a service data flow protection method based on a multi-medium channel, and comprises the following steps: S1, forwarding plane multi-medium channel network topology sensing; S2, service multi-path planning of a control plane controller software based on the multi-medium channel; S3, switching of a protection path of a forwarding layer device based on the multi-medium channel; and S4, fault tunnel repairing of a control plane based on the multi-medium channel. The application can reduce the interruption risk of user service flow and improve the stability of a packet transmission network.

This invention discloses a switching control method for air compressor operating modes, specifically relating to the field of industrial air compressor unit control technology. The method involves acquiring pressure signals and analyzing their frequency and time domain characteristics to output fluctuation level parameters, thereby dynamically adjusting the pressure switching dead zone threshold and delay time. It also involves detecting the frequency of the variable frequency drive (VFD), calculating the compensation amount using a piecewise compensation function, and superimposing it onto the PID output to correct the pressure. Furthermore, it monitors slave unit unloading and pressure rebound, generating a virtual locking signal to prohibit all second slave units from unloading within a specified window. The method continuously calculates the absolute and net integrals of the error value, and when the absolute integral exceeds the threshold, it forcibly triggers a re-optimization of the scheduling strategy. This invention avoids frequent start-stop of slave units by dynamically adjusting the dead zone through fluctuation identification, corrects nonlinear distortion of the VFD through piecewise compensation, and locks the second slave unit to cut off the interlocking unloading during pressure rebound. Combined with error integral re-optimization parameters, this improves the air supply stability and equipment lifespan under high-frequency fluctuation conditions.

This invention relates to the field of data communication technology and discloses a system for data transmission between a terminal device and a host computer. The system includes a terminal device, a host computer, and a switching control module. The terminal device utilizes its existing charging contacts to perform both charging and data transmission functions. The switching control module automatically switches between the charging path and the communication path, solving the problems of easy failure in existing wireless transmissions and the increased terminal size due to the need for additional connectors in wired transmissions. This invention reuses the two existing charging contacts of the terminal device as communication contacts, eliminating the need for additional communication interfaces or contacts, effectively controlling the size and hardware cost of the terminal device, and meeting the lightweight design requirements of small terminals and portable devices. The host computer's adapter interface integrates charging and communication functions, eliminating the need for separate charging and communication cables, simplifying the connection process.

The application relates to a hybrid inverter parallel-off-grid switching device and a switching switch device, the switching switch device comprising a relay, a shutdown module, a first starting module, a second starting module, a switching control module and a control module, the relay being connected with the shutdown module, the first starting module, the second starting module and the switching control module respectively, and the switching control module being further connected with the control module and the second starting module respectively. The switching switch device is applied to the hybrid inverter parallel-off-grid switching device, the relay can be quickly shut down through the shutdown module of the switching switch device, the disconnection speed of the hybrid inverter when quickly switching to the energy storage power supply mode during power grid failure is improved, power grid loss is reduced, and the problems of slow disconnection speed and large loss of the existing hybrid inverter when quickly switching to the energy storage power supply mode during power grid failure are solved.

This invention relates to the field of rail train technology, providing a pantograph contact force switching control circuit and method, and a rail train. The circuit includes: a contact network power supply system identification circuit, which identifies the current contact network power supply system and outputs the identification result; the power supply system includes at least DC power supply and AC power supply; a switching control circuit, which outputs a switching command based on the power supply system identification result; a control terminal of an air circuit switching valve group electrically connected to the switching control circuit, which switches to a first or second working position according to the switching command; and first and second pressure setting valve groups, the input terminal of the first pressure setting valve group being connected to the first working position and outputting a first preset contact force required for DC power supply; the input terminal of the second pressure setting valve group being connected to the second working position and outputting a second preset contact force required for AC power supply, both output terminals being connected to the pantograph lifting airbag. This invention achieves dynamic adaptation of contact force when the train is running on a DC / AC hybrid line.

The utility model discloses gear position switching control system convenient to control belongs to engineering equipment technical field, including control handle and gear valve core, and the position detection subassembly of control handle is connected, and the signal output end electric telecommunication of position detection subassembly is connected with controller, and gear valve core drives through drive component, and the output end electric telecommunication between drive component and controller is connected, and the input end of controller still signal connection has the remote signal loop of remote control signal convenient to receive. The utility model is used to solve the problem that the current gear control can only carry out manual control, and the remote control is inconvenient to realize simultaneously.

This invention relates to the field of rail train technology, providing a pantograph contact force switching control circuit and method, and a rail train. The circuit includes: a contact wire type identification circuit, which identifies the current contact wire type and outputs the type identification result; the type includes at least rigid contact wire and flexible contact wire; a switching control circuit, which outputs a switching command based on the type identification result; a control terminal of an air circuit switching valve group electrically connected to the switching control circuit, which switches to a first or second working position according to the switching command; and first and second pressure setting valve groups, the input terminal of the first pressure setting valve group being connected to the first working position and outputting a first preset contact force required for the rigid contact wire; the input terminal of the second pressure setting valve group being connected to the second working position and outputting a second preset contact force required for the flexible contact wire, both output terminals being connected to the pantograph lifting airbag. This invention achieves dynamic adaptation of contact force when the train runs on a mixed rigid-flexible contact wire line.

The present application relates to oil pump switching control technical field, specifically to a kind of unit lubrication system oil pump undisturbed switching control method, comprising the following steps: based on the fluctuation tolerance interval of pipe network pressure and wide limit constant, monitoring real-time hydraulic generation pipe network deviation record, compiling action instruction message obtains linkage ratio, position matching full scale is issued start-stop instruction to obtain oil pump undisturbed switching control strategy under waiting.The present application, by extracting oil pump operating pipe network fluctuation wide limit constant constructs reference operation hydraulic boundary to demarcate safe fluctuation tolerance interval, based on the trend label dynamic matching step or frozen signaling of real-time measurement constant, compiling double-channel action instruction message real-time adjustment main and vice line servo valve linkage ratio, after valve position matching full scale, only then issue start-stop instruction, effectively eliminate the hydraulic sudden change risk caused by hard switching, avoid the oil supply instability problem caused by intense impact effect in pipe, effectively guarantee the undisturbed smooth handover of main and standby oil pump.

This application discloses a UPS power supply zero-switching inverter control method, apparatus, device, and storage medium. The method includes: acquiring multi-dimensional electrical signals from the load side of the UPS output terminal; dynamically characterizing the behavior of the multi-dimensional electrical signals to generate characteristic quantities characterizing the load operating state; identifying the load type based on the characteristic quantities and determining the target output voltage amplitude, phase, and instantaneous power of the inverter during the switching process; constructing a non-singular fast terminal sliding mode switching surface based on the target output voltage amplitude, phase, and instantaneous power; driving the inverter output to converge towards the sliding mode switching surface to achieve coordinated adjustment of the output voltage amplitude, phase, and instantaneous power, wherein the gain function of the sliding mode control law adopts a form of dynamic adjustment with the deviation of the sliding mode surface; and performing power supply path switching when the output voltage and the target output state meet a preset continuity condition. This application improves the reliability and efficiency of zero-switching control.

This invention discloses a method and system for event-triggered load frequency security control in multi-regional power systems. The key technical points are: addressing the problem that existing load frequency control methods generally assume continuous availability of communication links, making it difficult to maintain stable operation under DoS attack conditions, this invention models the system as a switching system when a DoS attack occurs and switches the control mode in real time based on whether the link is under DoS attack: when communication is normal, conventional learning control is executed to optimize frequency regulation performance; when an attack occurs, it switches to an anti-attack control mode, thereby maintaining closed-loop stability and suppressing frequency deviation and tie-line power fluctuations even when communication is disrupted, significantly improving system security; furthermore, this invention is based on the RL method, obtaining control strategies through online learning with the environment when the system model is unknown or parameters are uncertain, thereby minimizing control energy consumption and improving operational economy without relying on precise system dynamics.

1. Name of the product in this design: Mine explosion-proof and intrinsically safe dual power supply switching control box. 2. Application of this design: This design is used for power distribution equipment that controls the switching of power lines. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.

This invention provides a multi-channel differential pressure real-time measurement method and system. Through collaborative interaction between the PS (Power Supply) and PL (Power Logic) terminals, the PS terminal receives and identifies commands from the host computer, while the PL terminal executes these commands, forming a corresponding closed-loop communication logic that improves data accuracy and reliability. Furthermore, parallel read / write operations are achieved. Switching between identifier values ​​controls independent data read / write operations on two memory ports, completely separating the read / write operations of the first and second ports, significantly increasing throughput. The two ports employ a write-first mode and independent address space design, eliminating the risk of read / write conflicts and increasing the number of concurrent detection channels and detection frequency.

The application discloses a railway signal system mobile internet business continuity guarantee system supporting 5G and 4G dual-mode switching, comprising: a network state real-time monitoring unit, used for collecting 5G network and 4G network communication parameters of a target area in a railway signal system mobile internet scene, wherein the communication parameters at least include 5G / 4G signal strength, network coverage range, transmission delay; a 5G-4G mode switching control unit, electrically connected with the network state real-time monitoring unit, receiving the communication parameters and generating a mode switching instruction. Through the setting of the network state real-time monitoring unit and the 5G-4G mode switching control unit, a precise dual-mode switching mechanism is constructed, the signal strength, coverage range, transmission delay and other parameters of the 5G and 4G networks can be collected in real time, and the switching instruction is generated based on the preset threshold, so that the automatic switching of the 5G and 4G modes is realized, and the mechanism can adapt to the network coverage differences of different areas in the railway signal system mobile internet scene.

The utility model provides a control system based on power supply car, its main controller and spare controller parallel and communication connection, voltage regulation control port and rotating speed regulation control port of main controller and spare controller are connected in parallel through the normally closed contact and the normally open contact of first relay, and the spare controller still includes the switching control port of enabling signal output when providing between main controller and spare controller communication exception or communication fault code, switching control port is connected with the coil of first relay, the utility model provides a control system based on power supply car can when main controller fault switches to spare controller, and the spare controller can through first relay and voltage regulation control port and rotating speed regulation control port are switched from main controller to spare controller, disconnect the physical connection of main controller and voltage regulator and rotating speed regulator, can effectively avoid the interference of error instruction that the main controller of failure possibly sent to the generator control, improve power supply car generation reliability.

The application discloses a high-order sliding mode controller design method and control method of a high-speed train, relates to the field of train control, and comprises the following steps: constructing a first-order sliding mode function with displacement error and speed error as independent variables and constructing a second-order multi-power terminal sliding mode function with the first-order sliding mode function as an independent variable; the second-order multi-power terminal sliding mode function adopts a multi-power structure to adapt to different convergence stages in the sliding mode control; the function value of the second-order multi-power terminal sliding mode function at the next moment is 0; an equivalent control law is derived based on the second-order multi-power terminal sliding mode function and a first tight format dynamic linearization data model; a switching control law is derived according to the second-order multi-power terminal sliding mode function, a reaching law and the first tight format dynamic linearization data model; and the high-order sliding mode controller of the high-speed train is formed by combining the equivalent control law and the switching control law, so that the high-order sliding mode controller which can guarantee the tracking accuracy and the sliding mode chattering suppression of the high-speed train system at the same time can be obtained.

A switching control method includes: receiving a trigger message for triggering a service scheduling server to reschedule a service server for user equipment; rescheduling, in response to the trigger message, the service server for the user equipment; transmitting an impact routing request to a core network accessed by the user equipment, the impact routing request being used for triggering the core network to change a user plane path of the user equipment; and transmitting an Internet Protocol (IP) address of the rescheduled service server to the user equipment, to trigger the user equipment to switch a currently accessed service server to the rescheduled service server.