77 results about "Pulse control" patented technology

An exposure control unit, a timing generator unit, a metering unit, and a pulse control unit are provided. The exposure control unit generates a signal defining multiple second exposure periods contained within a first exposure period, which corresponds to a frame, each of which is shorter than the first exposure period. The timing generator unit generates a pulse signal defining the timing information within each second exposure period. The metering unit counts the pulse signal at or after the first photon capture in the second exposure period, based on the pulse signal generated by the timing generator unit. The pulse control unit performs pulse counting in a second exposure period following the first, based on a value from the metering unit.

This application discloses a high-voltage pulsed ablation technique (PFA) with variable pulse width based on the ablation site, belonging to the field of high-frequency pulse control technology. The method includes selecting and confirming the ablation site on the ablation device display; switching and matching the corresponding pulse width parameters based on the confirmed ablation site; initiating and controlling ablation based on the switched and matched pulse width parameters; determining whether ablation is complete after completion; if not, restarting and controlling ablation again; if complete, determining the end of the current ablation; determining whether the ablation site needs to be changed; if not, restarting and controlling ablation again; if so, reselecting the ablation site for the next ablation. This method allows for ablation with different parameters based on different sites, resulting in less muscle tremor, more thorough tissue ablation, and a reduced recurrence probability. It does not require changes to the original hardware layout or catheter shape, only modifications to the software and algorithm.

This application discloses a controller and control system for a flexible actuator, and a biomimetic robot, belonging to the field of flexible actuator control technology. The controller includes: a pulse encoding module for converting target motion commands into pulse sequences; a spiking neural network processing unit for receiving the pulse sequences and collaboratively generating multi-channel pulse control signals based on its internal state evolution; and a multi-channel drive circuit connected to the output of the spiking neural network processing unit, where each channel receives one pulse control signal and converts it into a drive signal suitable for driving the corresponding flexible drive unit. By integrating the spiking neural network processing unit and the multi-channel drive circuit, the controller achieves end-to-end pulse domain communication from command input to drive execution, and can adaptively adjust the multi-channel control signals based on real-time feedback, thereby providing precise and compliant collaborative control for the flexible actuator.

A photoelectric conversion apparatus and a photoelectric conversion system including the same are disclosed. An exposure controller, a timing generator, a measurer, and a pulse controller are provided. The exposure controller generates a signal defining a plurality of second exposure periods, the plurality of second exposure periods being included in a first exposure period corresponding to one frame and each second exposure period being shorter than the first exposure period. The timing generator generates a pulse signal defining time information within each second exposure period. The measurer counts the pulse signal at or after a first photon detection in the second exposure period based on the pulse signal generated by the timing generator. The pulse controller performs count control of the pulse signal in a subsequent second exposure period of the second exposure periods based on a value of the measurer.

The application discloses a pre-charging system and a control method thereof, which comprises a single-chip microcomputer, which is used for collecting the voltage of a pre-charging circuit and performing calculation, filtering and duty cycle adjustment of a PWM pulse control signal; the pre-charging circuit comprises a triode Q1, the base of the triode Q1 is connected with the single-chip microcomputer and receives the PWM pulse control signal; one end of a capacitor C1 connected with the collector of the triode Q1, the other end of the capacitor C1 is connected with an NMOS tube Q2 control loop, the PWM pulse control signal is coupled to the NMOS tube Q2 control loop through the capacitor C1, and the on-off of the NMOS tube Q2 in the NMOS tube Q2 control loop is controlled; the drain of the NMOS tube Q2 is connected with the positive pole of a battery group through a pre-charging resistor R10, and the source level is connected with a pre-charging capacitor group, and the time for charging the pre-charging capacitor group is controlled through the on-off of the NMOS tube Q2.

This invention discloses a control method and control system for pulses in a physiotherapy device. The method includes: acquiring detection data collected by the patch during its operation; wherein the detection data includes: electromyography (EMG) data, skin impedance, skin temperature, and pressure distribution; identifying the patch's fit degree based on the skin impedance and pressure distribution; after the fit degree meets the standard, determining the current operating state category of the physiotherapy device based on the EMG data and skin temperature; obtaining electrode current compensation and heating power compensation for the patch based on the operating state category; and controlling the patch to adjust the current pulse and temperature based on the electrode current compensation and heating power compensation. This invention solves the technical problem in the prior art where physiotherapy devices cannot adaptively adjust different pulse controls for output, and can automatically adjust the current pulse and temperature parameters to suit the user when using the physiotherapy device, improving the user experience and ease of use.

The application relates to an LLC circuit relay sticking protection system and a control method thereof. The system part mainly comprises an LLC main circuit unit, a current sampling unit, a high-speed core control unit and a fault alarm unit; the current sampling unit is electrically connected with the transformer primary side of the LLC main circuit unit; the high-speed core control unit is internally provided with a high-speed analog-to-digital conversion module, a hardware comparator and a pulse control module; the high-speed analog-to-digital conversion module is used for high-frequency sampling of electric signals; the hardware comparator is used for comparing the sampled electric signals with a current reference signal in real time to complete hardware-level fault determination, and outputs a fault determination signal when a fault is determined; the pulse control module is used for instantaneously shutting off the pulse signals output to the switch tube group according to the fault determination signal; the fault alarm unit is electrically connected with the high-speed core control unit and is used for receiving the fault determination signal to realize real-time alarm. The application can solve the core problem of insufficient fault protection response speed in the prior art.

The application discloses a kind of high-speed moving particles and underwater cavity interaction test device in the field of fluid test device, comprising: cavity generation unit, including the cylinder filled with water;Ejection module, is located above cylinder, for making particle high-speed movement pass through the cavity generated by cavity generation unit, and the speed information of particle is realized acquisition;Laser imaging unit is located at the circumferential periphery of cylinder;Control unit, and cavity generation unit, laser imaging unit and ejection module are electrically connected;And a kind of test method;The beneficial effects of the application are: thus by setting cavity generation unit, ejection module, laser imaging unit and control unit, control unit is according to the existence time of cavity, the speed of particle, the accurate pulse control of laser imaging unit to the position of particle, the accurate capture of cavity and high-speed particle interaction image data is realized, and test result is more conducive to the research of abrasion problem.

The application discloses an ultrafiltration permeation regulation method and device based on a gradient sponge structure dialysis membrane and relates to the technical field of hemodialysis. An intelligent response membrane assembly containing a nonlinear aperture gradient is constructed; a signal is collected and a concentration polarization critical index is calculated; when the threshold value is exceeded, a multi-frequency coupling pulse control instruction containing a mechanical resonance excitation waveform and a phase reverse matching osmotic pressure oscillation waveform is generated; mechanical resonance excitation is applied to the blood side to induce membrane layer micro-breathing deformation, and an osmotic pressure oscillation waveform is injected into the dialysate side to form a reverse solute diffusion field; microgel deformation feedback signals are monitored in real time, waveform parameters are dynamically adjusted, and the concentration polarization critical index is returned to a safe interval until the ultrafiltration flux is adaptively regulated. The device comprises an intelligent gradient membrane assembly, a fluid power regulation module, an osmotic pressure wave generation module, a sensing feedback array and a central processing unit, can effectively inhibit membrane pollution and concentration polarization, and improves the system operation stability.

The present application provides a work machine capable of suppressing temperature rise of a motor. An arithmetic unit 95 continuously performs electronic pulse control even in a no-load state in which no load is applied to a tip tool holding portion, and if the average of the motor current detection value in the forward rotation drive of the motor 3 becomes equal to or greater than a threshold value (if the load applied to the tip tool holding portion increases), the maximum duty ratio when the motor 3 is rotated forward and the rate of increase of the duty ratio are set (updated) to values higher than initial values, so as to set the number of rotations of the motor 3 to be high, or the period of the electronic pulse control is set (updated) to a value smaller than an initial value.

The application relates to the technical field of lens defocusing, and discloses an automatic defocusing device for a full-furnace flame television, which comprises a lens pipe for mounting a lens of a flame television camera, a defocusing pipe coaxially sleeved at the outer periphery of the lens pipe, the defocusing pipe being capable of sliding relative to the lens pipe and being used for scraping off coking which blocks the lens, a transmission mechanism connected with the defocusing pipe and used for driving the defocusing pipe to reciprocatingly move relative to the lens pipe, a driving assembly connected with the transmission mechanism and used for providing driving force and controlling the moving speed and stroke of the defocusing pipe, and a defocusing control device used for monitoring the definition of a flame image collected by the lens, sending a pulse control signal to the driving assembly to trigger the defocusing pipe to perform a defocusing action when the blurriness of the flame image is detected to exceed a set threshold. The defocusing control device is used for acquiring the flame image, and the coking which blocks the lens is automatically scraped off when the blurriness of the flame image is detected to exceed the set threshold, so that the labor intensity of manual cleaning is reduced.

This invention provides a limestone thermal burst monitoring system and method based on 3D-DIC and acoustic emission, relating to the technical field of high-temperature rock testing technology. The method includes: acquiring acoustic emission signals of a limestone sample under thermo-mechanical coupling loading; generating a hard trigger pulse when the acoustic emission signal in any channel meets a preset trigger condition, and recording the arrival time of the acoustic emission signal meeting the preset trigger condition to determine an arrival time set; and controlling a high-speed camera group to freeze and save the image sequence based on the hard trigger pulse. This invention solves the problem of low accuracy in limestone testing and monitoring, thereby improving the accuracy of limestone testing and monitoring.

This application discloses a physical vapor deposition (PVD) apparatus, a PVD method, and a synchronous linkage controller, belonging to the field of PVD technology. The system includes: a cavity, a chuck, a magnetron, a drive unit, a pulse control power supply, and a synchronous linkage controller. The PVD apparatus includes a target placement area for mounting the target material. The chuck is located inside the cavity; the target placement area is located at the top of the cavity; the pulse control power supply is connected to the target material; the magnetron is connected to the drive unit; both the pulse control power supply and the drive unit are connected to the synchronous linkage controller; the synchronous linkage controller controls the pulse control power supply to output pulses with discharge parameters corresponding to the current position of the magnetron. This application can independently control the discharge parameters of the pulses used by the pulse control power supply when the magnetron moves to different positions on the target material, to meet the different plasma density and ion energy requirements of different positions on the wafer.

The application discloses an optimal pulse control method applied to an automatic guided vehicle system, relates to the technical field of automatic control, and determines the pulse interval length in a current pulse period through associated information data of the automatic guided vehicle system; then, the period Lyapunov matrix is iterated based on the associated information data and the pulse interval length, and the stability of the iterated period Lyapunov matrix is analyzed; if the stability is unstable, iteration is repeated until the stability is stable, and the target period Lyapunov matrix is output; the optimal pulse control matrix corresponding to the automatic guided vehicle system is determined according to the target period Lyapunov matrix, and is provided to the automatic guided vehicle system to realize optimal pulse control. The application solves the problem that the optimal pulse cannot be solved and / or the convergence performance is poor in the prior art, ensures the optimality and stability of the pulse control of the automatic guided vehicle system through iteration and stability analysis of the period Lyapunov matrix, effectively improves the system operation efficiency, and reduces the cost and mechanical wear.

The application discloses a kind of lightweight binary transmission methods based on impulse synchronization reaction diffusion neural network, belong to safe communication and control engineering field.The method is by constructing drive-response reaction diffusion neural network system, and impulse control is applied in response end, to realize the safe transmission and recovery of binary text information.Sending end converts plaintext into continuous time modulation signal superimposed to drive system, and receiving end uses synchronization error to complete demodulation and plaintext recovery.Compared with continuous control method, the application has the advantages of low communication overhead, simple implementation, suitable for resource limited equipment, etc.

The application provides a steep pulse electric field ablation circuit and a control method thereof. The FPGA processor in the circuit is connected with a high-voltage direct-current power supply, a pulse controller and a high-voltage isolation measurement circuit respectively. The first output end and the second output end of the high-voltage direct-current power supply are connected with the first input end and the second input end of a steep pulse generation module respectively. The first output end of the pulse controller is connected with the third input end of the steep pulse generation module, and the second output end of the pulse controller is connected with the fourth input end of the steep pulse generation module. The first output end and the second output end of the steep pulse generation module are connected with two ends of a load respectively, and the two intersection points are connected with the first input end and the second input end of the high-voltage isolation measurement circuit respectively. The circuit realizes accurate measurement and stable control of the high-voltage output amplitude.

This application relates to the field of relay drive control, and provides a method, circuit, and device for driving and protecting a magnetic latching relay. The method includes: acquiring and transmitting a pulse control signal; a digital control unit outputting a pulse control signal; the pulse control signal being transmitted to a coil drive circuit via a self-protection circuit; when the pulse width of the pulse control signal is within a preset normal range, the self-protection circuit does not activate, and the coil drive circuit normally drives the magnetic latching relay coil, achieving switching of the magnetic latching relay's switching state; when the pulse width of the pulse control signal exceeds a preset threshold, the self-protection circuit activates, forcibly pulling the pulse control signal low, causing the coil drive circuit to disconnect and the magnetic latching relay coil to be de-energized, thus protecting the magnetic latching relay; when the output signal of the digital control unit returns to normal, the self-protection circuit automatically resets. This application reduces the probability of damage to the magnetic latching relay coil due to prolonged energization and improves the operational stability of the equipment.

This invention relates to the field of automated manufacturing technology and discloses a manufacturing process for bevel gears in the dexterous hand of a humanoid robot, comprising the following steps: S1 near-net-shape blank preparation step, S2 cathode-precision forging die construction step, S3 system loading and initialization step, S4 adaptive hybrid pulse closed-loop collaborative execution step, and S5 finished product acquisition step. This invention constructs an adaptive hybrid pulse control closed loop by real-time monitoring of the electrochemical impedance signal between the anode blank and the cathode die. This method utilizes changes in impedance characteristics to determine the surface finishing state and the limit gap of mechanical forging, achieving precise and automatic switching between electrochemical pulses and mechanical pulses. This algorithmic linkage based on impedance feedback ensures that the finishing activation effect of the electrochemical pulses and the precise shaping and densifying effect of the mechanical pulses work synergistically within the optimal time window, avoiding the blindness of fixed-sequence control.

This invention provides a high-multilayer board processing method based on adaptive control of pressing stress. By embedding a micro-pulsed laser and an optical fiber coupled ultrasonic array within the upper and lower hot-pressing plates of the pressing mold, a full-board phonon detection network is established to excite and collect reflected sound waves from multiple interfaces in real time. Short-time Fourier transform is used to analyze the phonon group velocity, and combined with molecular dynamics simulation and experimental calibration, the local shear stress change rate is obtained. The stress spatiotemporal gradient is input into a spatiotemporal convolutional neural network to predict the stress diffusion path and peak value. If the stress exceeds a critical threshold, piezoelectric micro-region pressure compensation is intelligently triggered to achieve local pressure pulse control, effectively preventing interface instability. The process forms a closed-loop feedback correction. This invention significantly improves the real-time performance and accuracy of multi-material interface stress management.

A high-power-generator (HP-generator) configured to deliver high power with a high value of voltage and / or current to a pulsing unit. The pulsing unit is configured to deliver pulsed high power with a high value of voltage and / or current with a pulse-high-duration of 10 μs or less and a pulse-low-duration of 10 μs or less to a capacitive load in a plasma process. The HP-generator includes a control input configured to be connected to a control signal from an external pulsing control. The pulsing control controls the pulse-high-duration and the pulse-low-duration of the pulsing unit. The HP-generator includes a control unit configured to adjust an output of the HP-generator responsive to a signal at the control input such that an output voltage and / or current of the HP-generator can be changed during the pulse-low-duration and is constant during a following pulse-high-duration of a pulse at the output of the pulsing unit.

This invention provides a polarization method and device for short-period PPLN crystals. The polarization method of this invention includes the following steps: S1: Dividing the crystal surface into multiple polarization microregions; S2: Polarizing each polarization microregion of the entire crystal domain using short pulses, and acquiring the polarization current of each polarization microregion in real time; S3: Adaptively distinguishing between unpolarized, normally polarized, and domain-merging states based on the polarization current of each polarization microregion, and performing differentiated pulse control on the polarization microregions of each state; S4: Continuously applying differentiated pulse control until the entire crystal domain synchronously reaches the polarization endpoint. The polarization method and device of this invention can solve the technical problems of polarization inhomogeneity, domain merging, duty cycle runaway, and asynchronous penetration across the entire domain that exist in traditional methods, significantly improving the polarization accuracy and consistency of the crystal, and adapting to the high-precision requirements of micro-photonic devices with 4-7 μm short-period crystals.

This invention relates to a photometric stereoscopic 2.5D mold monitoring imaging method, comprising a pre-calibration step and a real-time monitoring step. The real-time monitoring step includes: S1: sequentially triggering multiple light sources from different directions to illuminate individually via pulse control signals, and simultaneously triggering a camera to acquire multiple corresponding mold surface images; S2: performing pixel-level synthesis of the multiple mold surface images to generate a stable image with uniform illumination; S3: calculating the pixel-level surface normal vector distribution based on the photometric stereoscopic method; S4: performing integral reconstruction of the normal vector distribution to generate a 2.5D height map; S5: detecting mold surface anomalies based on the stable image and / or the 2.5D height map. This invention, through multi-directional light source collaborative illumination and image synthesis strategy, accurately solves the problem of uneven illumination in unilateral bright and dark areas, obtaining a bright and clear detection image of the entire surface, while also possessing high stability and real-time performance, meeting the needs of industrial mold monitoring.

The present application relates to the technical field of active suspension system control, and particularly relates to a gain scheduling pulse control method for vehicle suspension under network delay. The method first establishes a dynamic equation and a state space model of vehicle active suspension containing network delay, and constructs a linear time-invariant state space model based on dynamic integral quadratic constraint; a corresponding gain scheduling pulse controller is designed, an equivalent form of the suspension state space model is established through an uncertain operator, and a pulse feedback interconnection system is derived; a stability condition of the control system is given under the dynamic integral quadratic constraint framework, a controller design method is proposed, a gain matrix is solved, and software simulation and hardware-in-the-loop experiment verification are performed. The method effectively simplifies the model processing flow and reduces the calculation complexity, can realize the stability control of the vehicle active suspension under network delay, and at the same time, takes into account the safety constraints of suspension displacement and actuator control force, and improves the ride comfort and control stability of the vehicle.

This application provides a pulse generation circuit, apparatus, and method. A coordinated pulse, comprising high-voltage pulses and / or low-voltage pulses, is formed by controlling a high-voltage pulse module to transmit high-voltage pulses and a low-voltage pulse module to transmit low-voltage pulses. Thus, a single pulse generation circuit can generate both high-voltage and / or low-voltage pulses without requiring additional equipment. The coordinated pulse output by the pulse generation circuit includes both high-voltage and low-voltage pulses, expanding the voltage range of the output pulses. This allows the pulse generation device to simultaneously achieve the effects of both high-voltage and low-voltage pulses. Furthermore, the proportion and combination of high-voltage and low-voltage pulses output by the pulse generation device can be adjusted via a coordinated pulse control signal, ensuring the flexibility of the coordinated pulse output by the pulse generation circuit.

This invention relates to a two-layer structured multi-UAV swarm anti-DoS attack formation coordination method based on energy-constrained hybrid control. First, a two-layer UAV swarm architecture integrating physical and virtual layers is proposed, which can uniformly divide a large number of UAV nodes into groups and establish biomimetic communication between these nodes. Second, a hybrid control protocol based on energy constraints is designed by combining continuous-time control and pulse control mechanisms and introducing a saturation function. When applied to formation coordination, this protocol simultaneously solves the problems of control efficiency, operating cost, and system robustness. Finally, a novel DoS attack model is introduced, which integrates "multi-interval periods" and "recovery probabilities." These multi-interval periods include a buffer period during which the recovery probability of the attacked communication channel follows a Bernoulli distribution. This method effectively addresses the limitations of existing DoS attack models in practical applications.

This invention discloses a pulsed gas-liquid alternating polishing device and method for complex, slender curved tubes. It includes: a five-axis linkage positioning module; a nozzle-type polishing execution module for spraying polishing fluid or high-pressure gas; a gas-liquid pulse supply module; an ultrasonic transducer auxiliary module; a temperature acquisition module; a flow acquisition module; and a timing control module, which receives temperature and flow signals and generates corresponding control commands according to a preset adaptive control strategy to control the gas-liquid pulse supply module to perform pulsed alternating supply, and synchronously adjusts the polishing fluid spraying time, high-pressure gas spraying time, and ultrasonic transducer output power in the pulse parameters. This invention constructs an adaptive intelligent pulse control scheme that combines the ultrasonic transducer, temperature, flow rate, and pulsed gas-liquid alternating supply mechanism, fundamentally solving the structural blockage problem in the polishing process of the inner wall of slender curved tubes.

The application provides a pulse control method and device, an electric drive system, electronic equipment and a storage medium, and relates to the technical field of electric drive. The method comprises the following steps: in response to a pulse control instruction, acquiring characteristic parameters of a target alternating pulse current for acting on a power battery corresponding to the pulse control instruction; determining a plurality of target wave launching paths corresponding to a current motor angle of a motor according to the current motor angle; determining pulse modulation parameters for controlling the inverter to work according to each target wave launching path under the current motor angle according to the characteristic parameters and the target wave launching paths; and alternately controlling the inverter to work according to each target wave launching path and the corresponding pulse modulation parameters, so that the inverter generates the target alternating pulse current for acting on the power battery. The application considers the charging efficiency of the power battery and the running stability of the electric drive system at a low cost.