69 results about "Phase switching" patented technology

This disclosure provides a charge pump circuit. The charge pump circuit according to this disclosure includes one or more cascaded boost units and output units having the same structure. Each boost unit has a dual-branch structure with top and bottom symmetry and connected to two sets of four-phase clock signals with opposite clock phases. By adjusting the phase relationship of the four-phase clocks, the rise time of the gate voltage of the transfer transistor can be delayed by advancing the falling edge of the driving clock of the secondary capacitor and delaying its rising edge. This ensures that the transfer transistor is in the off state at the moment of high-low phase switching, thereby avoiding the problem of reduced charge transfer efficiency caused by reverse charge flow between the input and output nodes of the boost unit.

The invention discloses a traffic signal control method and system based on multi-source event and double-loop phase cooperation, and relates to the technical field of traffic signal control, a road intersection mathematical model is constructed, a double-loop phase structure is set, and multi-source sensing data is collected in real time; based on the multi-source sensing data, modeling an intersection traffic signal control problem by adopting a deep Q network model, defining a state space, an action space and a reward function, decomposing a double-ring phase structure, and performing cooperative control by a plurality of agents; the reward function is constructed based on a vehicle delay time difference, a waiting time difference, a parking frequency difference and a queuing length difference; the intelligent agents are controlled to execute actions based on rewards fed back to the intelligent agents by the environment, phase keeping or phase switching is determined, an optimal phase scheme of signal control is obtained, timestamp driving, multi-event coupling analysis and a double-ring phase structure are fused, and intersection signal timing optimization is achieved in combination with a deep reinforcement learning algorithm.

A method is provided for operating a wireless charger having a multi-switch inverter which supplies an output PWM signal to a resonant circuit in response to switching control signals, including a first set of continuous excitation phase switching control signals (which generate the output PWM signal to have alternating positive and negative pulses having a first pulse frequency) and a second set of free resonance signal sensing phase switching control signals (which enable the resonant tank circuit to generate a resonant decaying output voltage signal in the presence of a foreign object that is located near the wireless charger), where each continuous excitation phase switching control signal includes a plurality of positive or negative excitation pulses having the first pulse frequency, and where one or more quality factor parameters of the wireless charger are measured based on one or more electrical parameters of the resonant decaying output voltage signal.

The application relates to the field of artificial network control, in particular to an artificial network control method, device and system for shielding across a darkroom. By using a fiber link and an internal battery power supply architecture in a fully-closed shielding darkroom, the interference of personnel on a test environment is completely eliminated, monitoring of parameters such as internal temperature and voltage of the integrated darkroom is added, zero-crossing synchronization noiseless operation of phase switching is realized, in addition, user end environment adaptive identification, driving parameter dynamic calibration and equipment life prediction are realized, and the needs of high-precision, unattended automatic phase switching and testing are met.

The invention discloses a preheating control method for a carbon dioxide asynchronous motor compressor, which comprises the following steps of: 1, connecting a U phase, a V phase and a W phase output by a frequency converter into a motor of the compressor, and simultaneously collecting the temperature of the compressor in real time; 2, acquiring an input signal; 3, judging whether the temperature of the compressor reaches the preheating temperature or not; 4, judging whether the compressor is in a shutdown state or not; 5, judging whether the shutdown time reaches the preheating shutdown switching time or not; 6, whether the preheating one-way duration time is reached or not is judged; 7, calculating actual target current according to the temperature of the IGBT module; 8, calculating a preheating output voltage through an IP controller of a current loop according to the actual target current, and generating a corresponding output current; and 9, calculating an alpha-axis voltage and a beta-axis voltage, and outputting an SVPWM signal. According to the invention, the preheating voltage can be accurately controlled, customized current control is realized, single-phase overheating is avoided through systematic phase switching, and a safety protection mechanism is provided.

A method is provided for operating a wireless charger having a multi-switch inverter which supplies an output PWM signal to a resonant circuit in response to switching control signals, including a first set of continuous excitation phase switching control signals (which generate the output PWM signal to have alternating positive and negative pulses having a first pulse frequency) and a second set of free resonance signal sensing phase switching control signals (which enable the resonant tank circuit to generate a resonant decaying output voltage signal in the presence of a foreign object that is located near the wireless charger), where each continuous excitation phase switching control signal includes a plurality of positive or negative excitation pulses having the first pulse frequency, and where one or more quality factor parameters of the wireless charger are measured based on one or more electrical parameters of the resonant decaying output voltage signal.

The utility model relates to the technical field of signal processing, in particular to an audio signal amplification circuit and audio equipment. The circuit comprises a phase switching unit and a signal amplification unit, the first end of the phase switching unit is connected with an external input signal, the second end of the phase switching unit is connected with the first input end of the signal amplification unit, the third end of the phase switching unit is connected with the second input end of the signal amplification unit, and a change-over switch is arranged in the phase switching unit. When the change-over switch is in an open state, the signal amplification unit carries out voltage amplification processing on the external input signal, and when the change-over switch is in a closed state, the external input signal is subjected to phase inversion and then is subjected to voltage amplification processing. By switching the phase state of the switch, reverse or normal amplification of the signal is realized, the requirement of the audio effect is met, and the application scene of the audio equipment is expanded.

The present application relates to the field of automatic control technology, specifically to a comprehensive automatic control method with redundancy fault-tolerant function, comprising the following steps: three-axis sensor collects vibration data, extracts characteristic parameters in combination with angular displacement pulse, K-means clustering evaluates modal quality, deformation gradient threshold value triggers abnormal identification, harmonic distortion is more than 15% to switch redundancy channel, fusion characteristics calculate power factor, phase switching loop, adjust PWM duty cycle in three intervals, regression correction generates brake curve verification execution, execute corrugated roller machine redundancy channel switching and parameter reloading. In the present application, three-axis vibration is combined with angular displacement to construct characteristic parameter clustering division mode evaluation quality, deformation correlation identifies abnormality, harmonic monitoring dynamically switches path to stabilize data flow, distortion rate calculates power factor, phase switching loop, adjusts PWM duty cycle according to power factor to improve precision, constructs vibration-modal-redundancy closed-loop system, realizes state identification and energy efficiency improvement.

The three-phase coupling carrier communication phase switching system comprises a three-phase coupling circuit, a three-phase signal switching module, a carrier power amplifier and a carrier MCU which are connected in sequence, the control signal output end of the carrier MCU is connected with the corresponding control signal input end of the three-phase signal switching module, and the carrier MCU is connected with the corresponding control signal input end of the three-phase signal switching module. And the control module is used for analyzing the received carrier data frame, extracting the signal strength and the signal-to-noise ratio, selecting an optimal phase, generating a control signal to drive a triode in the three-phase signal switching module, and dynamically adjusting the coupling phase of three-phase carrier communication. On the premise that carrier communication performance is not affected, communication coupling phases can be switched according to field environment noise and power line conditions, and therefore higher meter reading communication efficiency is achieved.

This application discloses a low-power temperature-compensated RC oscillator, comprising a low-voltage linear buffer, an RC core circuit, a comparator, a Schmitt trigger, a non-overlapping clock generator, and a level shifter. The low-voltage linear buffer uses intrinsic transistors to reduce operating voltage and power consumption; the RC core circuit employs temperature compensation technology, including a series low-temperature drift resistor and a temperature-dependent current source, causing the equivalent resistance to increase with temperature; the comparator compares a triangular wave signal with a reference voltage and outputs a reference clock; the Schmitt trigger filters out clock glitches; the non-overlapping clock generator generates a two-phase clock with dead time to control charging and discharging; and the level shifter converts the low-voltage domain clock to the high-voltage domain. This oscillator eliminates the influence of comparator offset voltage through two-phase switching control and employs low-voltage and temperature compensation technology to achieve a high-precision, low-temperature drift reference frequency in a small area with low power consumption, making it suitable for compact sensing and measurement systems.

The application discloses a control circuit and method of a multi-phase switching circuit and the multi-phase switching circuit, wherein the multi-phase switching circuit comprises N-phase switching circuits; for each phase switching circuit, the inductor current is reconstructed during the rising process of the inductor current, and the inductor current is directly sampled during the falling process of the inductor current to obtain a sampled inductor current; an upper limit value is set as a preset value obtained according to a compensation signal, and a lower limit value is set as a superimposed value obtained according to the compensation signal and a ramp voltage signal; the reconstructed inductor current is compared with the upper limit value to control the main switch tube to be turned off, and the sampled inductor current is compared with the lower limit value to control the main switch tube to be turned on. The application can solve the jitter problem caused by the noise of the inductor current in the working process through the comparison of the inductor current and the control of the main switch tube, and the switching frequency remains stable to meet the frequency requirement of the multi-phase.

The present application discloses a motor driver with automatic phase switching mechanism. After starting a three-phase motor, a back electromotive force detection circuit starts to detect back electromotive force signals of each phase of the three-phase motor. A drive waveform generation circuit acquires a plurality of first wave segments from a plurality of first wave patterns of a first wave pattern signal as a plurality of first wave segments of a first waveform signal according to the back electromotive force signals. A motor control circuit controls a motor drive circuit to drive the three-phase motor to operate normally according to the first waveform signal.

The present disclosure discloses a multi-phase switching power supply and a phase number control method thereof, and a control circuit. The multi-phase switching power supply comprises n phase power conversion circuits. The phase number control method comprises: controlling operating phase number of the multi-phase switching power supply according to a first parameter and load current; the first parameter comprising at least one of an input voltage, output voltage, and temperature of the multi-phase switching power supply, and the operating phase number refers to the number of power conversion circuits performing power operation. Compared with the existing technology which only controls the operating phase number of the multi-phase switching power supply based on the load current, the present disclosure can make the multi-phase switching power supply operate closer to the actual optimal efficiency curve, and even operate on the actual optimal efficiency curve, thus improving efficiency.

The invention discloses a multiphase switching power supply and a current sharing circuit thereof. The current sharing circuit comprises a processing unit used for providing a difference current between a master phase sampling current and a slave phase sampling current; the adjusting unit is connected with the processing unit and is used for providing average current according to the difference current and the reference current; the output unit is connected with the adjusting unit through the first current path and is used for outputting average current under the conduction state of the first current path; the clamping unit is connected with a first node, the first node is a common node of the adjusting unit and the first current path, the clamping unit clamps the first node according to the first voltage in an off state of the first current path, the multi-phase switching power supply comprises a master phase and a slave phase, and when an enable signal of the slave phase is an active level, the first node is a common node of the adjusting unit and the first current path. The first current path is conducted. And when the slave phase is not started, the voltage clamping of the first node is realized through the clamping module, so that the anti-interference performance of the multi-phase switching power supply is improved.

The invention relates to the technical field of communication, in particular to an air-ground coverage antenna device, a mode switching method and a mode switching device. The air-ground coverage antenna device comprises a control interface, a logic judgment circuit, a radio frequency interface, an antenna phase switching module and an antenna array, the control interface is connected with the logic judgment circuit, the logic judgment circuit and the radio frequency interface are respectively connected with the antenna phase switching module, the antenna phase switching module is connected with the antenna array, and the logic judgment circuit is connected with the radio frequency interface. And the antenna phase switching module is used for determining an air-ground scanning mode according to the first control information output by the logic judgment circuit and the radio frequency signal input by the radio frequency interface, wherein the air-ground scanning mode comprises at least one of a ground mode and an air mode. By adopting the method and the device, the air module or the ground module can be switched according to the condition of the current service, the module switching efficiency is improved, the flexibility and adaptability of the system are improved, the resource waste is reduced, and the resource utilization rate is improved.

The invention discloses a multi-source traffic data driven signal lamp accurate control method and system, and the method comprises the following steps: S1, collecting multi-source traffic data, and carrying out the data preprocessing, and forming a multi-source traffic original data set; s2, according to a flow conservation relationship, performing unification processing on the original data, and outputting calibrated traffic state data; s3, utilizing a shock wave neural operator module to predict motorcade wavefront arrival time and queuing emptying time of each entrance lane; s4, constructing a sequential logic constraint set and an uncertainty scene set; s5, through distributed robust optimization solution, generating a signal control scheme satisfying constraints, and generating a plan time axis; and S6, a control scheme is issued to a signal controller, adaptive phase switching is implemented, and after execution, recovery data are updated online. According to the accurate signal lamp control method driven by the multi-source traffic data, signal lamp scheduling is optimized in real time, the traffic flow management efficiency is improved, and traffic congestion is reduced.

The application discloses a running control method and system of a direct drive motor, relates to the technical field of control of the direct drive motor, and realizes the real-time collection of three-phase voltage fluctuation data, extracts a harmonic spectrum in combination with frequency domain analysis, and preliminarily estimates a conduction delay and a dead zone compensation time; when low-order harmonic exceeds a standard, the dead zone compensation is increased to form preliminary optimization parameters; subsequently, neutral point deviation, common-mode voltage and three-phase asymmetry are evaluated through waveform simulation; finally, a swarm intelligence optimization algorithm is adopted to iteratively adjust a potential balance correction coefficient, the conduction delay, the dead zone compensation and a phase-to-phase timing offset angle, target timing parameters are obtained, and three-phase switching control instructions are generated and applied to a control system. In the high-power direct drive motor control, the application realizes the timing design of optimized switching action, effectively reduces harmonic interference, avoids system risks caused by potential imbalance, and improves equipment operation stability and reliability.

A frequency control method and device for a hydro-wind-solar-pressure storage system based on an improved PPO algorithm are disclosed. The method includes: constructing a frequency control model for the clean energy base; introducing an expert knowledge learning mechanism and a phased training mechanism based on the PPO algorithm to construct an improved PPO algorithm; the expert knowledge learning mechanism refers to fitting the mapping relationship between the state and action of an agent through supervised learning based on an expert dataset; the phased training mechanism refers to using a preset number of training rounds as a phase switching condition, automatically triggering parameter adjustment of the agent after reaching the preset number of training rounds, and triggering the expert knowledge learning mechanism when the training effect of the agent is poor; and intelligently controlling the frequency of the clean energy base based on the improved PPO algorithm. This invention employs a phased training strategy, enabling a single training process to cover multiple operating conditions, and combines expert guidance to meet diverse control needs, thereby improving convergence efficiency and strategy performance, and ultimately achieving intelligent frequency control of the clean energy base.

The application discloses a kind of three-phase unbalance treatment method and system based on load grading, comprising: single-phase load is divided into first-level load and second-level load;Real-time power data of three-phase circuit is collected according to preset period;Determine the unbalance state of three-phase circuit according to real-time power data;The unbalance state is compared with preset state, and the balance state judgment result of three-phase circuit is generated;According to the balance state judgment result, phase switching is carried out on the second-level load;Wherein, the first-level load is fixed wiring load;Second-level load is commutatable load.The three-phase unbalance treatment method provided by the application only carries out quick switching on commutatable load to balance three-phase current, can control transformer winding temperature difference within preset temperature difference at all times under the premise that it does not affect the operation of fixed wiring load, to ensure the safe operation of three-phase circuit.

The present disclosure is directed to a multi-phase power converter controller. An apparatus includes a first phase winding (120) and a second phase winding (126), a first phase switching circuit (122 and 124) and a second phase switching circuit (128 and 130), and a controller (108). The controller (108) is coupled to the first phase switch circuit (122 and 124) and the second phase switch circuit (128 and 130). The controller (108) performs the following actions. It measures an input voltage signal (Vinput) to produce a measured Vinput. An angular position of a waveform of the V-input and a line voltage signal frequency of the V-input waveform are determined in response to the measured V-input. A compensated voltage is determined in response to the measured V input, the angular position, the line voltage signal frequency, and a total phase error. And controlling the first phase switch circuit in a first phase and the second phase switch circuit in a second phase in response to the compensated voltage.

The application discloses a groundwater multistage oxidation-reduction remediation system for high-risk heterochromatic pollution plume, relates to the technical field of groundwater remediation, and performs three-dimensional layering and high-permeability / low-permeability structure identification on an aquifer, delimits a target treatment area and oxidation stages, transition stages, reduction stages and a gatekeeping area, collects a baseline, sets red oxygen windows and arrival criteria for each layer, lays out a layered isolation multi-channel well pattern, constructs an extraction-recharge inward hydraulic gradient and sets a safety interlock, distributes injection proportions according to sectional equivalent injection impedance and the arrival criteria, superimposes micro-amplitude pressure oscillation on continuous low flow, and adds oxidants after wellheads; impedance attenuation and filtration pressure difference are tracked to trigger reverse extraction or cleaning, a self-cleaning solid loop is established, layered out-of-phase switching is performed, and gatekeeping emergency scheduling is carried out. The method improves uniformity of coverage, reduces external escape and residual pockets, reduces near-well blockage, and can restore operation capacity.

The invention discloses a multiphase switch converter and a communication method, and the method comprises the steps: detecting whether a multiphase switch circuit is powered on or not through a temperature pin after a controller is powered on, and transmitting a plurality of pulse signals to the multiphase switch circuit through a PWM pin after the completion of the power on is detected, and when the multiphase switch circuit detects a plurality of clock signals, the multiphase switch circuit pulls up the voltage of the current pin to a preset level and maintains the preset level for a plurality of time, and at the moment, the controller completes communication handshake. The controller converts the current or voltage information of the current pin in each clock so as to transmit the information of the application scene to the multi-phase switching circuit, and after the scene information is notified by the controller, the handshake communication link is quitted, and then a normal working state is entered. According to the invention, high information reporting precision in different application scenes can be realized, so that the working performance of the system is improved.

The application discloses a clock phase separation method, a clock phase separation circuit and a multi-phase switching circuit. A high-frequency clock signal is output according to the comparison result of a first slope signal and a reference voltage, wherein the first slope signal is reset according to the high-frequency clock signal and a standard clock signal; the high-frequency clock signal is frequency-divided to generate a 2nd to (n+1)th phase clock signal; and the size of the reference voltage or the slope of the first slope signal is adjusted according to the (n+1)th phase clock signal and the standard clock signal, so that in a stable state, the absolute value of the phase difference between the (n+1)th phase clock signal and the standard clock signal is less than a preset value, wherein n is an integer greater than or equal to 2. The circuit structure of the clock phase separation circuit is simple, and when the size of the reference voltage is adjusted according to the (n+1)th phase clock signal and the standard clock signal, when n is an integer greater than or equal to 3, the phase difference consistency of the standard clock signal and the 2nd to n-th phase clock signals is good, and the phase separation precision is high.

This invention proposes a dual-polarization reconfigurable electromagnetic lens array based on a partially reconfigurable optimized distribution, applicable to millimeter-wave communication and high-precision positioning. It includes a primary feed source, an electromagnetic lens array, and a control network. The primary feed source is placed at the focal length of the electromagnetic lens to provide spatial power. The electromagnetic lens array employs a partially reconfigurable architecture, with the array's units configured in a preset ratio as orthogonally distributed reconfigurable units containing PIN diodes and fixed-phase units. The fixed-phase units are permanently set to a predefined fixed-phase state. The control network calculates and controls the spatial distribution of the reconfigurable units and the phase state of the fixed units based on a sparse optimized distribution strategy. This allows the electromagnetic lens array to achieve independent 1-bit phase switching of mutually orthogonal X-polarized and Y-polarized electromagnetic waves by changing the forward and reverse bias states of the diodes. This invention balances dual polarization, broadband bandwidth, and partial reconfigurability with low complexity.

A kind of dual-phase variable loop order increment high-resolution analog-digital converter circuit based on multi-bit quantization, containing analog loop filter (hereinafter referred to as ΔΣ loop) and downsampling digital filter, there is phase switching switch, the phase switching switch includes L-1 phase switching switch in loop filter and L-1 phase switching switch in downsampling digital filter.The present application uses the architecture of first order and high order IADC mixedly, signal weight is made uniform by distributing the period number of phase 1 larger in total clock cycle, while fast accumulation is obtained by high order accumulation in a small part of total clock cycle to effectively improve the accuracy of system.Guarantee the weight of part input signal uniform in a sampling conversion period, to improve the effectiveness of DWA to suppress multi-bit DAC nonlinearity.

The invention relates to the technical field of magnetic sensor signal processing, in particular to a tunneling magnetoresistance (TMR) signal modulation and demodulation method, device and system and a chip. The system comprises a first TMR element, a second TMR element, a switch assembly and a differential amplifier, the output end of the first TMR element and the output end of the second TMR element are connected to the differential amplifier through the switch assembly, and the first TMR element and the second TMR element are opposite in sensitive direction and adopt Wheatstone bridge structures with the same bridge circuit configuration; the switch assembly receives a clock signal input by the clock circuit, switches the on-off state based on the phase of the clock signal, alternately gates and modulates an output end signal of the first TMR element or the second TMR element based on the on-off state, and inputs the modulated output end signal of the first TMR element or the second TMR element to the differential amplifier in a time-sharing manner; the differential amplifier carries out differential amplification on the modulated output end signal which is input in a time-sharing mode to obtain an amplified modulation signal. Through the scheme that the structure is simple and complex mechanical modulation is not needed, the low-frequency noise of the TMR signal is effectively suppressed.

The invention provides a control method and device for a three-level energy storage converter. The method comprises the following steps: acquiring a control parameter; determining a first sector to which the spatial reference voltage vector belongs according to the first orthogonal component, the second orthogonal component and a first sector determination rule, and determining a second sector to which the spatial reference voltage vector belongs according to the spatial reference voltage vector, the first sector to which the spatial reference voltage vector belongs and a corresponding second sector determination rule; if it is judged that the midpoint potential offset degree is larger than or equal to the reference threshold value, corresponding three vectors are obtained, and corresponding vector action time is calculated; querying to obtain a corresponding three-phase switch sequence; and generating a corresponding pulse width modulation signal according to the three-phase switch sequence. The device is used for executing the method. According to the control method and device of the three-level energy storage converter provided by the embodiment of the invention, the operation stability of the three-level energy storage converter is improved.

The application relates to the technical field of traffic signal control safety protection, and discloses a dual-domain independent safety protection method and system for a hardware three-wire interface safety coprocessor of a traffic signal control system and a cross software safety verification layer, which comprises the following steps: a phase switching instruction generated by a software safety verification layer intercepting and scheduling algorithm is intercepted, and legality is determined according to a time sequence threshold value; a main control processor sends the phase switching instruction to the safety coprocessor through a one-way communication line; the safety coprocessor monitors a heartbeat pulse to confirm the running state of the main control processor, and matches a phase conflict matrix fixed in a read-only memory to complete physical phase conflict verification; if a conflict item is triggered, the safety coprocessor outputs a rejection signal and forces a signal lamp to enter a full red state; the application constructs a software and hardware dual-domain decoupling protection system, guarantees the safety of traffic signal control through hardware determinacy, and prevents scheduling model abnormalities and external instruction injection risks.