535 results about "Pulse control" patented technology

A dual-motor mixed-hybrid powertrain system, by performing pulse modulation control, i.e., series-hybrid intelligent start-stop control or parallel-hybrid intelligent power switching control, on the instantaneous power time-varying functions of an engine and a battery pack, can convert the surface working condition of an analog electric control engine into a simpler line working condition of a digital pulse control (DPC) engine, either a pre-determined high-state line working condition in the high-efficiency combustion area or a pre-determined non-combustion low-state line working condition with zero fuel consumption and zero pollutant emissions multiplexed in time. The traditional fixed one-to-one bidirectional mapping between an engine working condition and a vehicle working condition is converted into a dynamically adjustable many-to-many bidirectional mapping to achieve the full coverage of any overall vehicle working condition, achieving decoupling between a DPC engine working condition and the overall vehicle working condition and decoupling between software and hardware of a hybrid powertrain.

The invention relates to the technical field of semiconductor laser power supplies, in particular to a semiconductor laser power supply control circuit based on linear constant current and a method thereof. According to the technical scheme, the circuit comprises a voltage follower module, a linear constant-current driving module, a power switch module, a pulse control module, a sampling feedback module and a follow current protection unit. The in-phase input end of an operational amplifier OPA320 of the voltage follower module is connected with external reference voltage # imgabs0 #, the inverted input end of the operational amplifier OPA320 is grounded through a first resistor R1 and connected with the output end through a second resistor R2, and a filter capacitor C1 is connected to the two ends of the second resistor R2 in parallel. Through a linear constant current control and pulse cooperation mechanism, the current stability and the dynamic response speed of the semiconductor laser under the wide-range and high-frequency working condition are remarkably improved, and it is guaranteed that the laser output power is accurate and reliable.

The utility model provides a high-voltage pulse generating device and a test system. The high-voltage pulse generating device comprises a main control unit, a driving circuit, a pulse control circuit with a wide bandgap semiconductor power device, and an output circuit, the first end of the main control unit is coupled with the first end of the driving circuit, the second end of the driving circuit is coupled with the first end of the pulse control circuit, and the second end of the pulse control circuit is coupled with the output circuit; the main control unit is configured to generate two paths of first PWM (Pulse Width Modulation) signals with dead time control; the two paths of first PWM signals are sent to the driving circuit; and the driving circuit is configured to process the first PWM signal and then drive the pulse control circuit, so that the output circuit generates a high-voltage pulse signal. According to the utility model, the structure is simple, the cost can be greatly reduced, the output pulse speed can be flexibly set, and the CMTI test requirements of different isolated gate drivers can be met.

The invention provides a wake flow redirection control method and system based on cabin type laser radar prediction, and relates to the technical field of laser radar remote sensing detection, and the method comprises the steps: obtaining first wake flow propagation path data of a target unit at different spatial positions and first wake flow speed data of different time points through a cabin type laser radar; performing correlation analysis on the first wake flow propagation path data, the first wake flow speed data and a preset unit wake flow speed attenuation coefficient to obtain a correlation analysis result; obtaining a wake flow prediction result based on the first wake flow propagation path data and the correlation analysis result; obtaining wake flow redirection control demand data based on a preset wake flow control target and the calibrated first wake flow speed data; converting the pulse parameter into a pulse control signal based on wake flow redirection control demand data; based on the pulse control signal, accurate redirection control over the wake flow of the wind turbine generator is achieved, cross interference of the wake flow is reduced, and the overall power generation efficiency of a wind power plant is improved.

The invention provides a pinned pulse safety synchronization control method and system of a multi-coupling time-delay network, and the method comprises the technical schemes: building a coupling time-delay dynamic network model, constructing a mathematical description of a random spoofing attack, designing a pinned pulse safety controller, and deducing a Lyapunov stability discriminant. Through defining an error system of a following network and a target network, under a pinned pulse safety control framework, based on a pulse system theory, system stability is analyzed, an attack probability is described in combination with a Bernoulli random variable, a pinned pulse control node selection strategy is finally designed, and safety synchronous control is successfully realized. The mechanism can effectively extract time delay information with a stabilization effect in a continuous system, and fuses the time delay information into the design of an anti-attack containment pulse safety controller, so that the synchronization safety of the system is remarkably improved, the resource allocation efficiency is optimized, and the attack influence is weakened by utilizing inherent time delay.

The invention relates to the technical field of distributed pulse control, in particular to a complex network distributed containment pulse control method and system based on dual-channel attack and a computer readable storage medium, and the method comprises the steps: building a complex dynamic network and a leader node; pinning nodes are selected from the complex dynamic network; constructing a distributed delay containment pulse controller; constructing an error network; and solving the distributed control intensity, the pulse interval and the pulse time delay of the distributed delay contained pulse controller based on a constraint condition for stabilizing the global index of the error network to obtain a target distributed delay contained pulse controller. The distributed delay containment pulse controller constructed by the invention enables the network to quickly realize synchronization under the combined action of dual-channel fraud attacks, thereby improving the network security and reducing the control cost on the aspects of time and space.

The invention discloses a T-S fuzzy model-based two-stage anti-attack coupling memristive neural network finite time bipartite synchronization control method. The method comprises the steps of establishing a memristive neural network model and a symbol topological structure; converting the memristive neural network model into a fuzzy coupling memristive neural network model, defining a synchronous error state variable, and establishing an error system of the memristive neural network; converting the error system into a form based on differential inclusion; a two-stage finite time synchronous controller is designed, in the first stage, when the state of an error system meets the condition, a pulse controller based on a hybrid trigger mechanism is designed to resist spoofing attacks; and in the second stage, a controller combining finite time control and fixed time control mechanisms is designed to resist DoS attacks. According to the invention, a two-stage controller is designed, and the controller integrates pulse safety control, feedback control and a finite time and control mechanism, and can simultaneously resist spoofing attacks with energy constraints and DoS attacks with random outbreak features.

The invention discloses a high-side driving circuit applied to a gallium nitride fully-integrated half-bridge power chip, and belongs to the field of power integrated circuits. The circuit comprises an input stage circuit, an anti-VSW negative voltage shift circuit and a low-power-consumption output stage circuit. Wherein the anti-VSW negative voltage shift circuit guarantees correct transmission of a signal under a VSW node negative voltage condition through a negative voltage transmission structure, and in addition, the anti-VSW negative voltage shift circuit can generate an advanced pulse control signal for the low-power-consumption output stage circuit; and the low-power-consumption output stage circuit only charges the bootstrap capacitor in a short time before the output state is changed through the advanced pulse control signal, so that the problem of high power consumption of a capacitor charging branch in a traditional scheme is greatly relieved. According to the invention, the signal transmission reliability of the high-side driving circuit under the negative-voltage working condition is remarkably improved, the static power consumption is effectively reduced, and the high reliability and low power consumption requirements of the gallium nitride fully-integrated half-bridge driving chip on the high-side access are considered.

The invention relates to an anti-demagnetization bistable quick release for an elastic operation mechanism, which is characterized by comprising an anti-demagnetization double-magnet unit, an armature unit, a coil unit and a self-adaptive pulse control system, and is characterized in that the anti-demagnetization double-magnet unit comprises a main permanent magnet, an auxiliary permanent magnet, a magnetic conductive yoke and an iron core; the main permanent magnet, the auxiliary permanent magnet and the coil unit are all assembled and connected with the magnetic conductive yoke to form a magnetic circuit loop, and the main permanent magnet and the auxiliary permanent magnet are connected in parallel to play a role in demagnetization resistance. And the magnetic conductive yoke is provided with an air gap, and a magnetic field at the air gap is used for adsorbing the armature and realizing the tripping action. When the device is matched with the circuit breaker for use, the tripping speed, the operation stability and the opening action consistency of the circuit breaker can be improved.

Embodiments that provide advanced charging of energy source arrangements for energy storage applications are disclosed. The embodiments can be used within energy storage systems having a cascaded arrangement of converter modules. The embodiments can include the application of pulses to an energy source of each module of the system. The pulses can be applied for a duration sufficient to initiate an electrochemical reaction. Feedback based pulse control embodiments are also disclosed.

The invention discloses a waterproof crawling robot. The robot comprises a driving mechanism, a supporting and adjusting mechanism, a camera shooting detection assembly, a slapping communication mechanism, a coupling unit and a control unit. The driving mechanism adopts four-wheel independent driving and differential steering; the supporting adjusting mechanism is of a crossed supporting rod structure. The slapping communication mechanism is composed of an eccentric cam and a firing pin or an electromagnetic releaser and a leaf spring firing pin, and mechanical pulses are transmitted to the pipe wall through an elastic cushion or a thin film resonant cavity of the coupling unit. The control unit carries out coordinated proceeding, detection and communication, a mute time slot is formed before and after slapping, acoustic signals are collected, and communication and echo ranging are achieved. According to the scheme, the strong rhythm pulse is used as a synchronous reference of communication and positioning, self-noise interference is effectively suppressed, stable communication and centimeter-level positioning are achieved in metal, full water and complex pipe networks, and the task completion rate is remarkably increased.

The invention discloses an impedance-adjustable series hybrid cascade static synchronous compensator and a control method thereof. The method comprises the following steps: acquiring grid-connected point voltage and load current information, and performing positive and negative sequence component analysis on the grid-connected point voltage and load current information; calculating a compensation line current component with the same size and opposite phase as the positive and negative sequence components of the load current so as to compensate the reactive power and the negative sequence current of the grid-connected point load; zero-sequence injection current used for in-phase active power balance is calculated, and reference operation current of each cascade branch is obtained; calculating the output reactive power of each phase based on the cascade branch voltage of each phase and the reference operation current, calculating the corresponding trigger angle of each phase thyristor under the condition that the adjustable impedance bears all phase voltages and generates all reactive power, and generating a pulse control signal to realize the control of the adjustable impedance; and each phase cascade converter adopts quasi-proportional resonance control to track the reference operation current, and generates a corresponding PWM signal to respectively control each phase cascade converter.

Techniques are described herein for improving the burst operation of flyback power converters. The techniques provide a burst mode that delivers voltage pulses to a switching element with decreased power losses (e.g., greater switching efficiency). The efficiency of the power converter can be improved by capping the number of pulses to be delivered in a given burst packet and instituting a fixed delay to limit the power delivery. The pulses may be delivered during valleys of the signal at the switching terminal of the switching element to reduce switching losses. Additionally, a frequency clamp circuit is also provided to ensure the switching frequency is not above a predetermined threshold frequency. A device designed to implement the improved burst operation includes a burst control circuit, a pulse control circuit, a delay control circuit, and a latch.

The invention discloses a collaborative decision-making method and device based on SNN real-time perception and LLM high-order planning, and relates to the technical field of autonomous driving decision-making, and the method comprises the steps: obtaining the real-time data of a vehicle multi-source sensor; inputting real-time data of a vehicle multi-source sensor into the pulse neural network, and outputting a pulse feature set; performing symbolic coding on the pulse feature set through a neural symbol system to obtain symbolic information which can be understood by the large language model; inputting symbolized information, map information, a driver natural language instruction, historical driving experience data and a traffic rule base into a high-order planning module of a large language model, and outputting a high-level decision instruction; decoding the high-level decision instruction according to a neural symbol system to obtain a pulse control signal which can be identified by a pulse neural network; and inputting the pulse control signal into an execution layer of the pulse neural network, and outputting a decision instruction. According to the method, the problems of real-time performance and energy consumption of the existing method are solved, the decision transparency is improved, and the hardware efficiency is optimized.

The application discloses a multi-port impedance optimization-based harmonic suppression method for a non-electrolytic capacitor permanent magnet synchronous motor driving system, and belongs to the technical field of motor control. The application is aimed at the problem that active damping control will cause the increase of machine-side harmonics when used for the network-side current harmonic suppression of a non-electrolytic capacitor motor system. The machine-side port impedance regulation voltage and the network-side port impedance regulation voltage are calculated. The entropy weight TOPSIS method is used to calculate the optimal angle of the machine-side and network-side port impedance regulation voltage, and the machine-side and network-side port impedance regulation voltage is synthesized into a cooperative voltage. The cooperative voltage is decomposed into a d-axis component and a q-axis component, and then is superimposed on the dq-axis voltage given value, so that the controlled dq-axis voltage given value is obtained. The regulated alpha-beta axis voltage given value is obtained through the inverse Park transformation link, and then the pulse control signal of the inverter is obtained through the SVPWM control, so that the machine-side and network-side harmonic suppression of the driving system is realized. The application is used for the cooperative suppression of machine-side and network-side harmonics.

A dual-motor mixed-hybrid powertrain system, by performing pulse modulation control, i.e., series-hybrid intelligent start-stop control or parallel-hybrid intelligent power switching control, on the instantaneous power time-varying functions of an engine and a battery pack, can convert the surface working condition of an analog electric control engine into a simpler line working condition of a digital pulse control (DPC) engine, either a pre-determined high-state line working condition in the high-efficiency combustion area or a pre-determined non-combustion low-state line working condition with zero fuel consumption and zero pollutant emissions multiplexed in time. The traditional fixed one-to-one bidirectional mapping between an engine working condition and a vehicle working condition is converted into a dynamically adjustable many-to-many bidirectional mapping to achieve the full coverage of any overall vehicle working condition, achieving decoupling between a DPC engine working condition and the overall vehicle working condition and decoupling between software and hardware of a hybrid powertrain.

The invention relates to the technical field of industrial process state monitoring, in particular to a photoresist filling state monitoring system and method. The system is characterized in that a micro-pressure pulse control unit acquires a reflection pressure change signal, establishes a corresponding relation between liquid column length and pressure, and outputs a pressure fracture judgment result; the acoustic sensing and judging unit is used for collecting a liquid column fracture sound pressure signal, constructing a non-contact liquid column end point state recognition mechanism and outputting an acoustic fracture judging result; the multi-channel intelligent decision-making unit uses a double-state doubt-tolerant self-certification mechanism to judge whether a pressure fracture judgment result is true or false, and outputs a final liquid column fracture judgment signal in combination with an acoustic fracture judgment result; and the filling process data recording unit records end point judgment related parameters, fracture judgment results and end point control feedback information in each filling process. According to the invention, micropressure pulse application and reflection pressure signal analysis are combined, and acoustic determination is introduced, so that the terminal point state of the photoresist filling tail end liquid column is accurately monitored.

Methods and systems for controlling a system of superconducting qubits using single flux quantum (SFQ) pulse schedule is provided. The single flux quantum (SFQ) pulse schedule may comprise on-ramp, off-ramp, and resonant parts, wherein the frequency of a single flux quantum (SFQ) pulse clock is at about a multiple of a qubit frequency. The method may include: providing a system of one or more qubits; delivering a single flux quantum (SFQ) pulse to each of the one or more qubits, the single flux quantum (SFQ) pulse being capable of influencing a quantum state of a qubit; obtaining at least one single flux quantum (SFQ) pulse schedule for the one or more qubits, each schedule comprising on-ramp, resonant, and off-ramp parts; and implementing the at least one single flux quantum (SFQ) pulse schedule for the one or more qubits.

The invention provides a submarine optical cable bidirectional loopback detection device and method based on wavelength division multiplexing, and belongs to the technical field of optical fiber communication precision detection and intelligent analysis. Through the first detection shore station A module, the pulse control processor generates a downlink detection pulse to respectively drive an uplink detection pulse optical signal and a downlink detection pulse optical signal to a main optical fiber; the pulse control processor analyzes the first transmitting and receiving time delay and the first signal attenuation; a second detection shore station B module, wherein the pulse control processor generates an uplink detection pulse; analyzing the second transmitting and receiving time delay and the second signal attenuation, and comparing the first transmitting and receiving time delay and the first signal attenuation; the double-loop module is used for separating, converting and coupling the uplink detection pulse optical signal and the downlink detection pulse optical signal to a main optical fiber for returning; and the intelligent master control processing module is used for measuring the phase of the bidirectional loopback signal and the amplitude change of the loopback signal, detecting and judging whether the uplink signal and the downlink signal are normally received or not, and performing accurate fault positioning and intelligent fault cause analysis and detection by combining with signal time delay.

The oscillator is controlled with high precision. [Solution] (b) an Arnold-Tan evaluation means having a sweep program that continuously or discretely scans injection points, measures the response of the oscillator at each injection point, and determines the most stable injection point; (c) a control means that calculates and sets injection parameters for the actuator based on the phase detection signal of the sensor and the evaluation, and controls the actuator based on a control law based on Arnold-Tan stability analysis; and (d) an optimization means that evaluates the vibration state after injection and dynamically optimizes the injection parameters based on the control effect.

The invention provides an SNN dynamic PET image processing method based on a memristor array, and the method comprises the steps: carrying out the preprocessing of an original image sequence, and obtaining a standardized spatial-temporal feature matrix; generating an initial pulse sequence by using the standardized space-time matrix; adjusting the initial pulse sequence to obtain a pulse sequence passing verification; generating a crossover sequence by using the pulse sequence passing the verification; obtaining a column current signal through a cross sequence; based on the column current signal, a finite-state machine is used for resetting the membrane unit integral according to a preset state sequence, and a pulse signal is issued; obtaining a digital current value based on the pulse signal; obtaining a classification result by using the digital current value; training the model through a classification result to obtain an optimized model; and generating a classification diagnosis result through the optimized model. According to the invention, physical optimization of dynamic time sequence processing is realized through a constructed memristor cross array and pulse control collaborative architecture.

The invention discloses a level shift circuit for subnanosecond transmission delay of a GaN gate driving chip, and relates to the technical field of gallium nitride half-bridge gate driving chips. Based on a traditional level shifting circuit, two auxiliary capacitors are additionally arranged in two pulse control branch nodes of a level shifting main circuit, charge and discharge logic control is achieved through a capacitor control circuit, and the capacitors are actively charged in the signal transmission stage to accelerate node voltage establishment by means of the time sequence characteristic of narrow pulse signals; and in the noise interference stage, rapid discharge is carried out to compensate the voltage drop caused by common-mode noise, and collaborative optimization of the anti-noise capability and the signal transmission efficiency is realized. And efficient and stable operation of the GaN power device under a high-frequency working condition is ensured.

An electric-motor control device that controls an electric motor driven by AC power comprises: a pulse control unit that generates a drive pulse on the basis of a voltage phase of the electric motor; and a power converter that converts DC power into AC power on the basis of the drive pulse generated by the pulse control unit and outputs the AC power to the electric motor, in which the pulse control unit generates, as the drive pulse, a primary-component suppression pulse for suppressing a primary component of the voltage higher-harmonic wave and a secondary-component suppression pulse for suppressing a secondary component of the voltage higher-harmonic wave and selectively switches between the primary-component suppression pulse and the secondary-component suppression pulse and outputs the primary-component suppression pulse and the secondary-component suppression pulse. As a result, a loss of the AC electric-motor can be suppressed, and the output can be improved.

The utility model discloses a laser diode control circuit of a laser, comprising a pulse control signal generation circuit used for generating grid control pulse signals with adjustable power, frequency and duty ratio; the power amplification circuit is used for amplifying the grid control pulse signal; the grid electrode of the MOS tube is connected with the output end of the power amplification circuit, the source electrode of the MOS tube is connected with one end of a driving resistor, and the other end of the driving resistor is connected with the negative electrode of a driving power supply and a ground wire; the positive electrode of the laser diode is connected with the positive electrode of the driving power supply, the negative electrode is connected with the drain electrode of the MOS tube, and the laser diode is provided with a heat dissipation block; and the temperature acquisition control circuit is used for acquiring temperature data of the heat dissipation block and controlling the on-off state of the driving power supply, and controlling the driving power supply to be adjusted to be in a power-off state under the condition that the temperature data exceeds a preset temperature threshold value. According to the utility model, the heating value can be reduced, the optical power is improved, and the laser diode is protected when the temperature of the laser diode abnormally rises.

The invention discloses a transformer area user transformer relation identification signal transmission method and a computer program product. The method comprises the steps that a sending end sends a pulse control signal on a power distribution line, so that the power distribution line generates pulse current; a zero-crossing detection circuit of the receiving end detects a power frequency voltage zero-crossing point; if the pulse current exists in the preset range where the power frequency voltage zero crossing point is located, the power distribution line superposes the pulse current on the load current of the power distribution line, so that the waveform of the power grid voltage of the power distribution line is distorted, and the position of the zero crossing point is slightly changed; the sending end carries out PPM modulation on the pulse current signal superposed on the load current, and obtains and sends a modulation signal; and the receiving end receives the modulation signal and identifies the transformer area to which the receiving end belongs based on the modulation signal. According to the method, the power frequency zero-crossing modulation is combined with the PPM modulation, so that the obtained modulation signal has very strong transformer area coverage, the current signal is not easy to cross the transformer area, and the hardware cost does not need to be increased.

The application discloses a traffic signal lamp trigger type countdown control output method, comprising the following steps: S100, configuring signal lamp fixed time countdown time length and configuring current cycle phase information; S200, reading the cycle phase information of the traffic signal lamp at the current time node and the signal lamp fixed time countdown time length, and generating a running phase chain table; S300, judging whether the time before the non-traffic light color of the current lost traffic right phase meets the configured fixed time countdown time length; S400, if the configured fixed time countdown time length is met, triggering the corresponding countdown timer; if the configured fixed time countdown time length is not met, performing countdown correction and calculating the countdown extension time; and S500, repeating steps S200-S400. The application can generate a running phase chain table under the condition that traffic intersection parameters are pre-configured, pre-add, real-time update and calculate signal control data to achieve accurate control of the time when the trigger signal triggers the countdown timer, and realize the trigger type pulse control countdown algorithm.

Various methods, controllers, and motor systems are described that facilitate pulse control of a motor to increase the energy efficiency of the motor when conditions permit. Selected transitions between pulse output levels are controlled to provide a cubic or higher order transition torque profile. In various embodiments, a cubic, quintic, or higher order transition profile is used. Using such a transition torque profile can improve the NVH characteristics of the motor while providing energy saving pulse transitions.

A time-of-flight distance measuring method and TOF distance measuring system. The distance measuring method includes: intermittently transmitting a plurality of pulses from a pulse generation unit; controlling a TOF sensor to allow each pixel of a plurality of pixels in the TOF sensor to continuously perform a first signal sampling first proportion for a first predetermined time on a first proportion of a plurality of reflected signals and performs a second signal sampling second proportion for a second predetermined time on a second proportion of a plurality of reflected signals, so as to generate a plurality of sampling results corresponding to the plurality of pixels; obtaining a plurality of depth information and a plurality of luminance information corresponding to the plurality of pixels according to the plurality of sampling results; and adjusting the first proportion and the second proportion according to the plurality of depth information and the plurality of luminance information.

A controller applied to a power converter includes a startup and pulse control circuit, a power switch, a startup circuit, and a clamping circuit. The power switch is coupled to a primary side of the power converter and the startup and pulse control circuit, and turned on according to a gate control signal generated by the startup and pulse control circuit. The startup circuit is coupled to the primary side of the power converter, the startup and pulse control circuit and the power switch, and turned on according to a startup signal generated by the startup and pulse control circuit. The clamping circuit is coupled to the startup and pulse control circuit and the power switch, and clamps a current flowing through the startup circuit when the startup circuit is turned on.

The invention discloses a self-triggering pulse T-S fuzzy nonlinear system synchronization control method, and relates to the technical field of synchronization control, and the method comprises the following steps: collecting communication parameter information among multiple nodes, and constructing an incidence matrix used for representing communication characteristics among the nodes based on the communication parameter information; extracting a coupling strength index and a node weight index which are used for guiding system synchronous control; based on the current system state, local synchronization errors of all nodes are monitored in real time, and whether pulse control operation is triggered or not is judged according to a preset multi-channel triggering mechanism; and if the trigger condition is met, applying a pulse control signal to the target node. According to the method, the influence of different network environments on system synchronization can be accurately modeled by constructing the three-dimensional heterogeneous incidence matrix integrating the time delay, the packet loss rate and the protocol weight, and the control signal can be flexibly applied according to the real-time synchronization error and the node state of the system by designing the dual-channel trigger condition and the self-adaptive pulse control signal.