744 results about "Mode switch" patented technology

The embodiment of the invention provides a grid-connected inverter control mode switching method and device, equipment, a medium and a product, and is applied to the technical field of electrical control. The method comprises the following steps: acquiring a control mode switching signal of the grid-connected inverter, and determining a switching direction of a control mode based on the switching signal; when the switching direction indicates that the current control mode is switched from the GFL mode to the GFM mode, setting an initial value of an integrator of a power synchronization loop of the GFM mode as a phase angle value of a phase-locked loop corresponding to the GFL mode; switching the control mode from the GFL mode to the GFM mode based on a first preset path and a step-by-step switching mode; when the switching direction indicates that the current control mode is switched from the GFM mode to the GFL mode, acquiring a power steady-state output value of the GFM mode, and setting a power reference value of the GFL mode as the power steady-state output value; and switching the control mode from the GFM mode to the GFL mode based on the second preset path and the step-by-step switching mode. The technical effect of improving the control mode switching fluency is achieved.

The invention relates to a PFC-PWM (Pulse Width Modulation) dual-mode control method for a high-voltage direct-current power supply with a wide output voltage range. The output current of the high-voltage direct-current power supply is detected in real time, the critical threshold value of the load impedance is mapped into the hysteresis interval of the output current, the theoretical boundary of mode switching is obtained, and the control mode is dynamically adjusted. In order to further guarantee smooth switching of the two control modes, hysteresis control logic is designed, and undisturbed smooth switching of the PFM mode and the PWM mode is achieved. Based on an energy equivalence principle and a frequency consistency constraint of a critical load SWL working point, a current threshold criterion and a parameter pre-synchronization strategy are constructed, seamless connection of a mode switching process in a frequency domain and an energy domain is ensured, a transient oscillation risk is remarkably reduced, and a guarantee is provided for continuous and stable output of a full-range load working condition.

Disclosed herein are a mode switching system and an exercise bike comprising the same that switches a non-freewheel mode and a freewheel mode automatically, ensuring improvement in user convenience. The exercise bike comprise a step motor, a first limit sensor sensing a first part of the face gear and outputting a first sensing signal, a second limit sensor sensing a second part of the face gear and outputting a second sensing signal, and a controller determining a current power transfer mode by using the first sensing signal and the second sensing signal, and rotating the step motor forward or reversely, based on the current power transfer mode, to switch the power transfer mode to the non-freewheel mode or the freewheel mode, in a case where a mode switching signal is input.

The invention relates to the technical field of AC / DC module control, and discloses an intelligent control method and system for multi-mode switching of an AC / DC module. According to the method, a dynamic topology mapping model is constructed according to an impedance spectrum matrix, and a physical connection relation is converted into a node admittance relation network; generating an energy distribution state sequence based on the power fluctuation vector, and analyzing migration constraint conditions among different operation modes by adopting an association rule mining algorithm; when an operation mode switching instruction is detected, activating a node admittance relation network in the dynamic topology mapping model, and inputting a current energy distribution state sequence to an association rule mining algorithm; according to a real-time matching result of the node admittance relation network and the migration constraint condition, generating a switching control instruction containing an impedance adjustment gradient and a power distribution weight; and the power semiconductor execution unit transmits the switching control instruction to the AC / DC module. According to the method, multi-mode intelligent switching control of the alternating-current and direct-current module can be realized.

The invention provides a mainboard power supply output voltage stability test method and system, and the method comprises the steps: generating a dynamic stepped load current based on a load demand parameter and a limit working condition defined by a hardware specification when a mainboard operates in a preset multi-mode switching state, and setting a first synchronization window before each step switching moment, setting a second synchronization window after the step switching time, collecting voltage waveform data, inputting the voltage waveform data into a preset filtering algorithm, extracting an overshoot amplitude and recovery time, constructing an asymmetric coupling model, and taking a difference value between the overshoot amplitude and a preset fluctuation range as a first stability index; the ratio of the recovery time to the response time threshold value is used as a second stability index, nonlinear weight distribution of the two indexes in multiple step intervals is calculated, a stability grade judgment result is generated in combination with a circuit board wiring impedance characteristic library, and the test compatibility of high-density mainboard multi-phase power supply and high-frequency devices is improved.

The invention discloses a power supply control method and device of a server and electronic equipment, and relates to the technical field of computers, power supply modes of a group of power supplies comprise a static redundant power supply mode and a dynamic redundant power supply mode, and the method comprises the following steps: obtaining power consumption data of the group of power supplies in a specified historical period to obtain historical power consumption data; on the basis of the historical power consumption data, the load trend of the group of power supplies in a specified future time period is predicted, the predicted load trend of the group of power supplies is obtained, and the specified future time period is a future time period with the current moment or a future moment after the current moment as a starting moment; and according to the predicted load trend and the specified mode switching condition, dynamically switching the power supply mode of a group of power supplies, thereby solving the technical problems of low efficiency of the power supplies and serious electric energy waste in a power supply control method in the related technology, and achieving the technical effects of improving the efficiency of the power supplies and reducing the electric energy waste.

An approach is described for a user equipment (UE) to provide vehicle-to-everything (V2X) communication in a 5G new radio (NR) network. The UE includes processor circuitry that mode switches between two modes of resource allocation for the V2X communication, the two modes being a first mode and a second mode, wherein the first mode is a network scheduled resource allocation mode, and the second mode is a UE autonomous resource allocation mode. The UE also includes radio front end circuitry that communicates with a second UE using a V2X sidelink in the first mode or the second mode.

The invention relates to an equipment control method and device, air conditioning equipment and a storage medium, and the equipment control method comprises the steps that audio data and a depth image of a space where first equipment is located are obtained; determining object information of an object in the space according to the audio data and the depth image; determining whether the object in the space meets a mode switching trigger condition or not according to the object information; and if it is determined that the object in the space meets the mode switching triggering condition, controlling the first device to be switched to a target working mode. According to the embodiment of the invention, through a multi-modal data fusion technology, the object information of the object in the space is accurately identified, and when the object in the space meets the mode switching trigger condition, the working mode of the first equipment is automatically switched, so that a personalized service mode is provided for the object in the space, and convenience is brought to a user.

The invention provides an FDP mode dynamic switching method and device of an SSD, computer equipment and a storage medium, and the method comprises the following steps: presetting a dynamic configuration table containing multi-mode parameters, and defining a physical block management rule by the dynamic configuration table; performing physical block resource initialization according to the dynamic configuration table, and generating an initial physical block index and a management structure matched with the current mode; in response to a mode switching instruction, based on a target mode parameter in the dynamic configuration table, cleaning user data and reconstructing a physical block index; updating a target mode identifier according to the reconstructed physical block index, and generating an encryption check code to verify a switching result; and based on a switching result, multiplexing the reconstructed physical block index to realize multi-mode cyclic switching. The technical problems that an existing FDP mode switching method of the SSD is complex in process, poor in fault tolerance and waste in resources are solved.

The invention provides a switching circuit, a power receiving end device and a mode switching method thereof. The switching circuit is configured on the power receiving end device and is electrically connected to a universal serial bus type C connector of the power receiving end device. The switching circuit comprises a judgment module, a PD controller and a mode switching module. The judgment module is used for judging whether the power supply end device supports a power supply transmission mode according to a pin signal of a CC pin of the USB Type-C connector; and generating a first switching signal based on the condition that the power supply end device does not support the power supply transmission mode. The PD controller is electrically connected with the judgment module. The mode switching module is selectively and electrically connected to the PD controller and is used for being disconnected from the PD controller based on the first switching signal.

Systems and methods described provide dynamic and intelligent ways to change the required level of user interaction during use of a monitoring device. The systems and methods generally relate to real time switching between a first or initial mode of user interaction and a second or new mode of user interaction. In some cases, the switching will be automatic and transparent to the user, and in other cases user notification may occur. The mode switching generally affects the user's interaction with the device, and not just internal processing. The mode switching may relate to calibration modes, data transmission modes, control modes, or the like.

The invention discloses a power system random sampling control method based on attack compensation. The method comprises the following steps: constructing an adaptive random switching model, establishing a lightweight DoS attack detection and event trigger compensation mechanism, and optimizing a PD controller fusing compensation data, the method combines the random switching model, a network security defense mechanism and an optimization control strategy, and aims at a dynamic multi-mode power system containing an electric vehicle EV. The technical bottleneck of traditional load frequency control in the problems of random disturbance, network attack and mode switching dependency is solved, the method is suitable for improving the frequency stability and the anti-attack ability of the power system, and the anti-interference ability and the operation efficiency of the power system can be improved.

The invention provides a boost converter controlled in a PFM mode and a zero cross detection circuit thereof. The zero-cross detection circuit is composed of a biasing circuit and a three-stage comparator. In the three-stage comparator, the first stage adopts a common-gate circuit, receives zero-cross detection two-end input, and adapts to a wide input range; the second stage is a push-pull amplifier, receives the output of the first stage, and accelerates the overturning speed through push-pull input and output; and the third stage is responsible for outputting a zero-cross detection comparison result. The boost converter system comprises a mode switching unit, a switch logic control unit, a driving control unit and a main circuit. The mode switching unit judges whether to enter a PFM mode or not according to the zero-cross detection circuit signal; the switch logic control unit outputs a logic control instruction according to the signal; the driving control unit controls the on and off of the N-type power tube and the P-type power tube in the main circuit according to the instructions. The control mode is combined with high-precision and high-speed zero-cross detection, so that the stability and the response speed of the system are remarkably improved.

The invention discloses a fault signal dual-mode output method of a magnetic latching relay, particularly relates to the technical field of relay control, and is used for solving the problem of low mode switching efficiency caused by an existing physical jumper mechanism. The current mechanical state of the relay is detected by receiving a remote dual-mode switching instruction; applying a driving voltage sequence corresponding to the target mode according to the state; based on the iron core residual magnetism intensity and the dynamic margin of a target mode nominal value, judging and generating a driving enabling or degaussing trigger signal; when a driving enable signal is responded, the lag time difference between the voltage rising edge and the magnetic flux jump starting point is captured in real time, and the eddy current loss characterization quantity is generated by combining the product integration of the current differential and the temperature rise; adjusting the rising slope and the duty ratio of the driving voltage sequence according to the lag time difference and the over-limit condition of the eddy-current loss characterization quantity; and finally, the matching between an execution result and a target mode identifier is verified by controlling a coil current response waveform, and the continuous holding mode and the instantaneous pulse mode are remotely and reliably switched.

The invention relates to the technical field of communication equipment operation and maintenance, in particular to a serial port equipment firmware upgrading method and system. The serial port equipment firmware upgrading method comprises the steps that an upgrading task instruction issued by a remote management platform is received, and after equipment identity verification and upgrading file integrity verification are executed, system protection measures are started; creating a security isolation sandbox environment, forbidding a high-risk function module in a script execution environment, and defining addressing parameters of target serial port equipment; standard scripts are loaded, and serial port read-write, file operation and state reporting type security interaction interfaces are injected; calling a mode switching function of the standardized script, so that the serial port equipment is switched to a firmware upgrading mode from an operation mode; cyclically calling a data transmission function of the standardized script to transmit firmware data in blocks, and synchronously implementing timeout monitoring; and after upgrading is completed or abnormal interruption occurs, the security isolation sandbox environment is destroyed, the original business is recovered, and an upgrading result is reported to the remote management platform.

The invention discloses a multi-tube parallel power device phase shift type current sharing and crosstalk suppression drive circuit which is composed of a crosstalk suppression unit, a current balancing unit, a control response unit and a function switching unit. Wherein the crosstalk suppression unit generates a control signal for suppressing the crosstalk voltage of the parallel power device and shields the interference of the current balancing unit; the current balancing unit generates a control signal for balancing the dynamic current of the parallel power device and shields the interference of the crosstalk suppression unit; the control response unit is used for realizing crosstalk active clamping or current active equalization; and the mode switching unit realizes automatic switching of a crosstalk suppression function or a current equalization function according to configuration. Parallel device grid driving signal feedback is introduced, crosstalk voltage active clamping and dynamic current active balancing are achieved through a logic circuit, and the parallel expansibility is high; an exclusive-OR gate is adopted to accurately identify synchronous or asynchronous information of driving signals of the parallel devices, and various different gate sequential modes in parallel application of the hybrid devices can be compatible.

A server delay control device that is set up in a kernel space of an OS and started as a thread to use a polling model to monitor an arriving packet, wherein the thread has operation modes of a sleep control mode in which the thread is put to sleep and a constantly busy poll mode in which the thread is kept constantly busy polling, and the server delay control device includes a traffic frequency measurement unit that measures traffic inflow frequency, and a mode switching control unit that switches an operation mode of the thread between the sleep control mode and the constantly busy poll mode, on the basis of the traffic inflow frequency measured by the traffic frequency measurement unit.

The invention discloses a mode switching method, device and equipment of an energy storage converter and a storage medium, and relates to the technical field of power grid control, and the method comprises the steps: obtaining a multi-mode control grid-connected model of the energy storage converter, and the grid-connected model comprises a grid-following type control model and a grid-constructing type control model; based on the grid-connected model, injecting a high-frequency small signal into a power grid through an energy storage converter, and processing the high-frequency small signal by adopting a discrete Fourier transform algorithm to obtain grid-connected point voltage and current response; obtaining a power grid impedance parameter according to the grid-connected point voltage and current response; calculating an operation short-circuit ratio according to the power grid impedance parameter in combination with the actual output power of the energy storage converter and the power grid voltage amplitude; according to the operation short-circuit ratio and the short-circuit ratio threshold value, mode switching is carried out on the following network type control and the construction network type control, and the method can improve the accuracy of mode switching of the energy storage converter.

The present invention relates to a flexible power supply MCU dynamic frequency modulation control method and device, comprising the following steps: determining a mode switching instruction of the load device based on a target working mode and a current working mode; extracting timing characteristics of the mode switching instruction to obtain a mode instruction timing feature vector; performing frequency band decomposition and prediction on the real-time power consumption of the load device based on the mode instruction timing feature vector to obtain a load power consumption frequency band feature; performing a working frequency range mapping on the flexible power supply MCU based on the load power consumption frequency band feature to obtain a dynamic frequency adjustment sequence; inputting the dynamic frequency adjustment sequence into the flexible power supply MCU to control the load device to switch from the current working mode to the target working mode, solving the technical problem that due to the huge differences in load characteristics under different application scenarios, the fixed-mode frequency adjustment mechanism cannot accurately match the actual requirements, resulting in low energy utilization efficiency.

Systems, methods, apparatus, and computer program products for a mode switching scheme for reconfigurable intelligent surface (RIS) assisted backscatter communication. The method may include connecting with a network node for communication; receiving an indication of an activation of backscatter from the network node; receiving a backscatter signal and a signal sent by a network node; and demodulating the backscatter signal and a signal transmitted by the network node, the backscatter signal comprising backscatter data.

The embodiment of the invention provides a mode switching method and device, electronic equipment, a storage medium and a program product. The method comprises the following steps: receiving a preset trigger operation acting in a page; in response to the preset triggering operation meeting the mode switching condition of the page, mode switching prompt is carried out on the page, and the mode switching prompt is used for prompting switching of the content display mode of the page after triggering is finished; and in response to the triggering end of the preset triggering operation, switching the content display mode of the page from the first content display mode to a second content display mode. By means of the technical scheme, the switching difficulty of the content display modes can be reduced, and the false triggering situation of switching of the content display modes is reduced.

The invention discloses a control method of an electronic musical instrument, the electronic musical instrument and a storage medium, the electronic musical instrument comprises at least two modes, and the control method comprises the following steps: receiving a target playing operation for the electronic musical instrument; under the condition that the target playing operation triggers mode switching, a current first playing mode is switched to a second playing mode, and playing rules of the electronic musical instrument in the first playing mode and the second playing mode are different; and responding to a new playing operation according to a target playing rule corresponding to the second playing mode. According to the technical scheme of the invention, different modes can be switched according to the operation of the user, so that the electronic musical instrument meets the operation freedom degrees of different users, and personalized playing requirements are met.

The invention discloses a mode switching method, device and equipment of a variable photo-thermal integrated Carnot battery and a storage medium, and relates to the technical field of photo-thermal energy storage, and the method comprises the steps: firstly cleaning and fusing historical and to-be-measured radiation, meteorological, geographic and equipment data, and generating high-quality features; then, a Transform-LSTM model containing an encoder, position coding, multi-head attention, feedforward, LSTM and a full connection layer is built, historical features are used for training until convergence is achieved, and a target model is obtained; the model outputs a solar radiation predicted value in real time, a storage and release link of medium and low temperature circulation is started when the solar radiation predicted value falls into a first preset intensity grade, and high temperature circulation is switched when the solar radiation predicted value falls into a second preset intensity grade to complete mode switching. According to the invention, output uncertainty caused by solar radiation fluctuation can be converted into stable and adjustable electric energy output, and optimal distribution of photo-thermal resources and maximization of system efficiency are realized.

The present application relates to a converter control method, a converter, and a chip. The converter comprises an alternating-current side half-bridge circuit and a controller, and the method is used in the controller. The converter control method comprises: when the alternating-current side half-bridge circuit satisfies a zero-crossing switching condition, switching the control mode of the alternating-current side half-bridge circuit from a first mode to a second mode, wherein the second mode comprises: switch devices located on a same bridge arm are turned on in a preset sequence or turned off in a preset sequence, and corresponding switch devices located on different bridge arms are complementarily turned on. The converter control method has high reliability.

The invention provides a platform door monitoring method, a platform door monitoring device and a platform door monitoring system, which are realized through a platform door monitoring machine, the platform door monitoring machine is connected with a platform door unit controller, responds to a control instruction input by a user and executes triple safety verification, and authority verification is that only when a logged-in user is an administrator, the logged-in user is the administrator; opening an operation interface related to the control instruction and allowing execution of the control instruction; the mode switching verification is to receive a mode switching instruction, so that the platform door unit controller is converted into a control instruction issuing mode; the secondary confirmation operation is to forcibly verify a confirmation password input by the user before the control instruction issuing operation; and after the triple safety verification is passed, generating a unique command identifier corresponding to the operation of the control instruction, binding the unique command identifier with the control instruction, and issuing the bound unique command identifier and the control instruction to a platform door unit controller for execution. Motion control parameters of the door control unit can be modified remotely, time and labor are saved, the safety and reliability of the platform door are improved through remote monitoring and management, and the safety of passengers is guaranteed.

The invention relates to a solar photovoltaic power generation control method and system, and the method comprises the steps: adjusting a power reference value of a virtual synchronous generator based on the predicted photovoltaic power change trend information of a micro-grid after a mode switching request is detected, and controlling the output power of the micro-grid to approach a steady-state power value under a target grid-connected working condition; in different operation modes, the virtual inertia of the virtual synchronous generator is configured to be an adaptive set value, and the virtual damping coefficient is adjusted; calculating a comprehensive switching preparation index based on the photovoltaic power prediction error, the convergence characteristic of the actual power deviation and the bus voltage and frequency fluctuation amplitude; and when the comprehensive switching preparation degree index meets a preset condition, generating a synchronous starting instruction, and entering an off-grid to grid-connected switching stage. Therefore, the stability and the reliability of mode switching can be remarkably improved, transient impact is effectively inhibited, and the power supply continuity and the power quality are guaranteed.

The invention relates to the technical field of power electronics, and discloses a hybrid device driving circuit, system and control method.The hybrid device driving circuit comprises a DSP module, an FPGA module, a hybrid device driving module and a mode switching comparison module, and the mode switching comparison module obtains a real-time voltage signal on a load; comparing the real-time voltage signal with a preset reference voltage of each modulation mode, and outputting a mode switching signal; the FPGA module determines a target modulation mode of a PWM signal output by the DSP module based on the mode switching signal, and processes the PWM signal into a target PWM signal corresponding to the target modulation mode; and the hybrid device driving module respectively controls the on and off of the IGBT and the SIC MOS tube based on the target PWM signal, and adjusts the real-time voltage signal under the action of the on and off of the IGBT and the SIC MOS tube so as to drive the load. The problems that an existing hybrid device driving circuit is low in precision and large in loss in control over a delay switch of a switching device are solved.

Embodiments of this disclosure provide a method for power saving mode switching, a method for power saving mode configuration, and a communications device. The method includes: switching the terminal from a first power saving mode to a second power saving mode when an event for power saving mode switching occurs.

The invention provides an off-grid energy storage twin trawling test platform and method, and the platform comprises a dynamic off-grid switching module which is used for automatically triggering and quitting a peak clipping and valley filling strategy, closing a converter PCS, and switching to an off-grid mode when the access of a test load is detected; the VF / PQ cooperative control module is linked with the dynamic off-grid switching module, dynamically distributes the proportion of a constant voltage source VF and a power tracking source PQ according to the performance of the converter, and adjusts the output power of the PQ source through a power automatic tracking algorithm; the intelligent SOC adjustment module acquires electric quantity data of a tested system in real time, calculates a target SOC value and synchronizes the target SOC value to the VF / PQ cooperative control module; the multi-level protection module is used for monitoring grid-connected point power, transformer load and PCS states in real time and triggering countercurrent prevention, super capacitance prevention and error fault-tolerant protection; and after completing mode switching, the dynamic off-network switching module sends a starting signal to the VF / PQ cooperative control module.

The invention provides a power state self-adaptive switching method and system for intelligent terminal equipment, and the method comprises the steps: obtaining the characteristics of different hardware modules of the intelligent terminal equipment, and determining a multi-stage power state switching process of each hardware module, obtaining specific control steps and parameter adjustment ranges of three stages of pre-switching, switching neutralization and switching completion of each hardware module; setting a local power management state adaptive switching strategy; when power supply management state self-adaptive switching is carried out, a mode switching smooth transition algorithm is adopted according to a multi-stage power supply state switching process of each hardware module and specific control steps and parameter adjustment ranges of three stages of pre-switching, switching neutralization and switching completion of each module; stable transition of various parameters is achieved through gradual adjustment, and power consumption fluctuation caused by large-amplitude parameter changes is avoided.