89 results about "Pulse cycle" patented technology

The invention relates to the technical field of pulse load energy optimization control, in particular to a pulse type ultra-low power consumption energy management system based on a super capacitor, which comprises a pulse spectrum analysis unit, a capacitor bank dynamic tuning unit and a charge state compensation unit, a pulse spectrum analysis unit extracts a load pulse dominant frequency component through a window function weighting algorithm to generate a target frequency value, and a capacitor bank dynamic tuning unit inquires a mapping table according to the target frequency to adjust series-parallel connection combination of the super capacitors and injects a reverse reactance component to offset a resonant impedance difference value. And the charge state compensation unit predicts the residual charge quantity by using a Kalman filter, and triggers a charge redistribution strategy in a non-pulse period, thereby solving the problems of insufficient dynamic impedance matching and low charge balance efficiency in the traditional technology, realizing high-efficiency and low-consumption management of the energy of the super capacitor, improving the energy transmission efficiency, and reducing the energy consumption. And the endurance time of the equipment is prolonged.

The invention relates to the technical field of health data processing, in particular to a handlebar-based health data real-time analysis and prompt system, which comprises a physiological signal sensing module, a trend feature extraction module, a state level identification module, a prompt scheme selection module and a multimode channel prompt module. According to the method, a multi-source signal sequence is constructed for trend characteristic analysis through synchronous acquisition and time window alignment of four types of signals including pulse beat cycle, grip rate, blood oxygen decreasing time period and contact area frequency, the health state level is judged according to a trend cross-coincidence relation, and a corresponding prompt scheme is matched; through cooperation of the signal change trend, real-time perception and grade classification of the physiological abnormal state of the rider are realized, the pertinence and effectiveness of prompt response are improved, the precision and stability of a continuous prompt intervention mechanism are enhanced, and the problems of potential health risk identification delay and lack of personalized regulation and control of prompt are effectively solved.

A test method and apparatus for bipolar degradation of a diode, and a device. The method comprises: respectively performing static characteristic tests on a first diode and a second diode, so as to obtain a first static characteristic test result and a second static characteristic test result; setting a pulse test current, a pulse test time and a pulse cycle time, so that, on the basis of the pulse test current, the pulse test time and the pulse cycle time, a power semiconductor pulse current test device performs repeated short pulse current power cycle tests on the first diode under normal temperature conditions, and performs repeated short pulse current power cycle tests on the second diode under high temperature conditions; then, performing static tests, so as to obtain a plurality of static characteristic test results; and on the basis of the static characteristic test results, obtaining a bipolar degradation test result of a diode. By means of the method, bipolar degradation of the diode is tested, and the accuracy and reliability of the test result are improved.

A current sensor circuit (1) comprises, for example, a sensing coil (N1) configured to change its inductance with a DC current, a resonant capacitor (C1), a phase-adjusting circuit (10) receiving a feedback signal from the resonant capacitor and outputting a driver signal, a circuit (20) having several switching elements (Q1, Q2) forming a half-bridge or full-bridge circuit, wherein the circuit causes the several switching elements to perform a switching operation according to a pulse period of the driver signal, so that an AC signal is supplied to the sensing coil and the resonant capacitor, a signal converter circuit (40) converting the driver signal output by the phase-adjusting circuit into a sensing signal indicating a change in the DC current, and a sensing terminal (DCSIG) outputting the sensing signal externally.

The present invention relates to a water pump dry-run detection method and system, where the method includes: converting an operating current signal of a water pump into a voltage signal; collecting, at a frequency, a voltage signal value output by the voltage-current conversion module within one pulse cycle of the water pump in a dry-run state to obtain a first determined threshold corresponding to the dry-run state; calculating determined data at a current time point based on a voltage signal value of the water pump during use within the pulse cycle; and determining, based on a magnitude relationship between the determined data and a first determined threshold, whether the water pump is in the dry-run state.

A method for plasma processing a substrate includes: sustaining a plasma in a plasma processing chamber, the plasma processing chamber including a first electrode and a second electrode, where sustaining the plasma includes: coupling a source signal to the first electrode; and applying a bias signal to the second electrode, the bias signal having a spike waveform including a plurality of bias pulses, each of the bias pulses including a DC base voltage for a base duration and a triangular voltage spike having a rise time from the base voltage to a peak voltage and a fall time from the peak voltage to the base voltage, a sum of the rise time, the fall time, and the base duration including a pulse period, the applying including: independently adjusting the rise time and fall time to obtain a narrow energy spread of a mode at a high modal energy in an ion energy distribution function (IEDF) of an ion flux incident on the substrate, the narrow energy spread including a first width of the high energy mode of the IEDF that is smaller than a second width of the high energy mode of the IEDF obtainable using a rectangular pulse waveform.

The invention discloses a torque control method and device, equipment, a storage medium and a program product, and relates to the technical field of motor control, and the method comprises the steps: determining a target pulse width based on a preset pulse width and a preset pulse width change coefficient in response to a torque control instruction, and determining a torque amplitude value based on the target pulse width and a preset torque amplitude value; generating a target pulse modulation signal, and performing torque control based on the target pulse modulation signal; under the condition that the preset torque amplitude is the same and the target pulse width is greater than the preset pulse width, the target area of the target pulse modulation signal in the single pulse period is the same as the area of the preset pulse modulation signal in the single pulse period; if yes, reducing the corresponding torque in a period of time starting from the pulse starting moment and / or a period of time before the pulse ending moment; therefore, the shaking or NVH problem of the whole vehicle is fundamentally relieved, and the driving comfort of the vehicle is improved.

In order to provide a gas cluster ion beam apparatus capable of performing unprecedented high-precision trimming processing by generating a high-speed and high-precision pulse beam and adjusting the pulse width, pulse period, and the like thereof, a switching circuit including a switching device 32 is provided. The switching device 32 is arranged in a power line that supplies a voltage from an ionization power supply 30 for accelerating ionized hot electrons of the ionizer 5 to the ionizer 5 and an anode bar 17 having an equal potential to the ionizer 5. A gas cluster ion beam can be intermittently irradiated onto a substrate (15) to be irradiated, wherein a switching circuit (SWC) controls the on and off of a switching device (32).

A combinatorial optimization problem processing device 100 comprises: a 1 × 2 Mach-Zehnder optical modulator 10 for receiving and modulating a polarization clock pulse train; an optical interference circuit 20 for receiving the polarization clock pulse train modulated by the 1 × 2 Mach-Zehnder optical modulator 10 and generating a predetermined interaction in an Ising model at a period of N pulses of the polarization clock pulse train; a modulating signal generation unit 40 for generating the modulating signal of the 1 × 2 Mach-Zehnder optical modulator 10 by waveform-shaping an electric signal obtained by photoelectrically converting an optical signal output from the optical interference circuit 20 and outputting a monitor signal representing the solution of an optimization problem to the outside; and an initialization control unit 30 for creating a neutral state for interaction between elements to initialize the optical interference circuit 20, by controlling the optical interference circuit 20 to reduce attenuation of the polarization clock pulse train input to the optical interference circuit 20. The combination optimization problem of the N elements is processed in association with the Ising model.

A visualization system (106) with customizable illumination cycles for addressing relative brightness differences between different illumination sources. A system includes an image sensor (124) including an array of pixels (125) and a transmitter (102) including a plurality of electromagnetic radiation sources (138), wherein the plurality of electromagnetic radiation sources includes a first source and a second source. The transmitter cycles at least a portion of the plurality of electromagnetic radiation sources according to a pulse period including a plurality of pulse emissions by the first source and a plurality of pulse emissions by the second source. When the image sensor reads out a data frame corresponding to the transmission of the first source, at least a portion of the plurality of pulsed transmissions of the second source overlaps a readout period of the image sensor.

This state change detection system comprises: a rotation detection unit that outputs a pulse signal; a pulse calculation unit that obtains a pulse calculation waveform representing a pulse period for each rotation angle of a rotating body; a reference generation unit that generates a reference waveform in which an average pulse calculation waveform, which is obtained by averaging values of the pulse calculation waveform with an accumulated value for each rotation angle, is represented by the distribution for one rotation of the rotating body; a rotational fluctuation waveform generation unit that uses the reference waveform to generate a rotational fluctuation waveform obtained by extracting, from the pulse calculation waveform used to generate the reference waveform or a pulse calculation waveform succeeding the pulse calculation waveform, a fluctuation component other than a steady component that steadily occurs with the rotation of the rotating body; and a state change detection unit that detects a change in rotation state on the basis of the rotational fluctuation waveform.

The application discloses a motor control double-arm Rubik's cube robot method based on a robot vision recognition algorithm and belongs to the technical field of motor control double-arm Rubik's cube robot methods. In matlab, the starting and ending speed, the maximum speed, the total time, the uniform speed time, the subdivision number of a stepping motor, the subdivision interval, the rotation angle parameter, the specified control curve T type and the S type are defined according to the subdivision number and the rotation angle. The total pulse number is calculated, the total pulse is distributed to the acceleration, uniform speed and deceleration stages, the specified control curve T type and the S type are defined according to the subdivision number and the rotation angle, the total pulse number is calculated, the total pulse is distributed to the uniform speed, acceleration and deceleration stages, the acceleration stage is divided into two sections, namely, the S type, the jerk acceleration is calculated, the speed change is calculated through integration, and the acceleration stage pulse cycle is generated. When the acceleration stage is the uniform acceleration stage, namely, the T type, the acceleration is calculated, the speed linearly grows in each pulse cycle, and the acceleration stage pulse cycle is generated.

The application belongs to the technical field of random number generation, and particularly relates to a random signal generation device based on a saturable absorber semiconductor laser. The device comprises a random self-pulsation entropy source, a photodetector and a pulse amplitude quantization module. The random self-pulsation entropy source adopts a saturable absorber semiconductor laser (preferably a DFB-SA structure), generates optical pulses with random amplitudes and stable repetition periods by injecting a driving current in a gain region and applying a reverse bias voltage in an absorption region; the photodetector adopts a PIN photodiode or an avalanche photodiode to convert the optical pulses into corresponding electrical pulses; and the pulse amplitude quantization module comprises a differential comparator and a peak detection circuit, which quantizes the peak value of the electrical pulses in each pulse period by using a fixed threshold or an adaptive threshold to generate a random bit sequence. The application realizes high-speed and high-stability random signal generation without an external electric clock, an ADC and digital post-processing, and has a simple device structure, low power consumption and high integration.

The application relates to the technical field of discharge signal collection, in particular to a high-voltage cable partial discharge signal synchronous collection method and system, which comprises the following steps: based on a multi-channel high-speed double-ADC architecture, synchronously collecting ground loop current signals and high-frequency current signals in the operation process of a high-voltage cable; calculating pulse frequency spectrum consistency and mutation phase fluctuation to obtain a discharge loop current abnormality; determining the pulse periodicity of the high-frequency current signals; extracting harmonic frequency parameters and energy attenuation parameters of the high-frequency current signals, calculating a harmonic abnormality, combining the pulse periodicity to obtain a pulse harmonic abnormality factor; performing weighted summation on the discharge loop current abnormality and the pulse harmonic abnormality factor to evaluate the reliability of the synchronously collected signals, and outputting a synchronous collection result of the high-voltage cable partial discharge. Therefore, the accuracy of the synchronous collection of the partial discharge signals is improved.

A signal processing method, circuit and chip, and an electronic device. The signal processing method comprises: performing PWM on an input signal to obtain a PWM positive signal and a PWM negative signal (101); and outputting a positive output signal and a negative output signal on the basis of the PWM positive signal and the PWM negative signal (102), wherein in response to the absolute value of the amplitude of the input signal being greater than a threshold value, one of the positive output signal and the negative output signal includes no pulse, and the other one of the positive output signal and the negative output signal includes two pulses within one pulse cycle. The method can improve the performance of an output signal while improving the performance.

A current sensor circuit includes a detection coil configured such that an inductance changes with a direct current, a resonant capacitor, a phase adjusting circuit that receives a feedback signal from the resonant capacitor and outputs a drive signal, a switching circuit that includes a plurality of switching elements forming a half-bridge circuit or a full-bridge circuit and supplies an alternating current signal to the detection coil and the resonant capacitor by causing the plurality of switching elements to perform a switching operation in accordance with a pulse period of the drive signal, a signal converting circuit that converts the drive signal output from the phase adjusting circuit into a detection signal indicating a change in the direct current, and a detection terminal that outputs the detection signal to the outside.

The invention relates to a distance calculation method for single-photon laser ranging, relates to the technical field of laser ranging, and solves the technical problems that a conventional calculation method needs to solve an equation set, is relatively complex and affects the timeliness of data output by a single-photon laser ranging machine. The calculation method comprises the following steps that: in a distance measurement cycle, a single-photon distance measurement machine emits laser pulses to a target at a pulse period of which the number is greater than or equal to 3; the single-photon laser range finder draws a range finding curve according to the obtained data; after noise is filtered out from the ranging curve, photon counting peaks with the number equal to that of pulse periods appear, and the photon counting peaks are counted by photons. According to the distance calculation method for single-photon laser ranging, a complex equation set does not need to be calculated, the distance calculation process can be simplified, and the distance calculation efficiency is improved.

A system and method for protein detection are provided, configured to non-invasively identify proteins exhibiting specific structural conformations within a biological target. The system comprises a light source operable to irradiate the target at a predetermined pulse cycle, a sound detection device configured to capture acoustic signals generated via the photoacoustic effect, and an information processing unit that analyzes the detected acoustic signals to determine the presence or accumulation of a target protein. This technique facilitates early-stage detection of disease-associated proteins, such as amyloid-β and misfolded α-synuclein fibrils, without requiring complex imaging modalities or invasive biopsy procedures.

The present disclosure relates to ultrasound-based strategies and techniques that are specially designed for time-resolved simultaneous cardiac tissue visualization and intracardiac flow instability mapping. First, to achieve high-resolution tissues images while also acquiring flow data, we devised an acquisition scheme which consists of two batches. The first batch is dedicated to tissue imaging, where we transmit a series of diverging waves emitted from different virtual source locations. These pulses have a single pulse-cycle to optimize axial resolution and are coherently compounded for improving lateral resolution. This paradigm generates tissue images with an improved resolution, allowing for real-time guidance at frame rates up to 50 fps. The second batch is dedicated for flow imaging where all diverging waves are transmitted from the same virtual source location. These flow pulses have a 5-cycle pulse length for improved flow signal. The length of this batch can be adjusted, but our experiments use a length of 64. The final transmission scheme alternates between the tissue batch and flow batch.

The application discloses a high-frequency pulse DC power output stability control device and belongs to the technical field of power supply control. The device proposes a state zeroing-knowledge injection control paradigm for the contradiction between overshoot and slow response after reset of the traditional controller in the pulse mode due to integral memory. At the starting moment of each pulse period, a pulse opening instruction is generated and a reset signal is generated with a delay, the integral capacitor is forced to discharge to make its output zero, and the overshoot risk is eliminated; according to the load current steady-state value collected during the last pulse off period and the current target duty cycle, a feedforward control value is determined; in the same control period when the integral value is zeroed, the feedforward value and the integral output value are added to generate a drive control signal, and finally the drive power switch output pulse current is modulated. Through the cooperation of physical state forced zeroing and system knowledge cross-period prediction injection, the application realizes the rapid and non-overshoot establishment of the pulse current, and effectively solves the dynamic performance bottleneck of the high-frequency pulse power supply.

The invention discloses a high repetition frequency pulse forming network control system and a control method thereof.The system comprises a pulse forming network module, a sampling module, a feedback correction module, a PI controller module and a driving module which are cascaded, and the pulse forming network module is used for storing electric energy and outputting circuit topology of high repetition frequency pulses; the sampling module is used for collecting actual output parameters of the pulse forming network module in real time, the feedback correction module is connected with the PI controller module by calculating the output duty ratio of the tail end of each pulse period, and the feedback correction module is used for correcting initial control parameters in real time and generating corrected feedforward parameters; the PI controller module is used for outputting a closed-loop regulating variable according to the error; and the driving module is used for generating a driving signal to control a switching device of the pulse forming network module. The defects that in the prior art, a high repetition frequency pulse forming network is low in control precision and slow in dynamic response can be overcome.

A method, apparatus and system for processing a wafer in a plasma chamber system, which includes at least a plasma generating element and a biasing electrode, include generating a plasma in the plasma chamber system by applying a source RF source power to the plasma generating element for a first period of time of a pulse period of the RF source power, after the expiration of the first period of time, removing the source RF source power, after a delay after the removal of the RF source power, applying an RF bias signal to the biasing electrode for a second period of time to bias the generated plasma towards the wafer, and after the expiration of the second period of time, removing the RF bias signal from the biasing electrode before a next pulse period of the RF source power. The generated plasma biased toward the wafer is used to process the wafer.

An arc length control method comprises: obtaining a peak average voltage; obtaining a base average voltage; determining an arc length feedback value ALV of a current pulse period of an arc according to the peak average voltage and the base average voltage; and adjusting a pulse parameter of a next pulse period according to the arc length feedback value ALV and a deviation of a set voltage value; wherein the arc length feedback value is expressed as: ALV=A*IPV+B*IBV+C, wherein IPV represents the peak average voltage of the current pulse period, IBV represents the base average voltage of the current pulse period, A represents an adjustment coefficient of a pulse peak voltage, B represents an adjustment coefficient of a base pulse voltage, and C represents a voltage compensation amount. An arc length control device, a non-volatile storage medium, and a computer program product are also provided.

An optical synchronization method for a safety light curtain. The method comprises: an emitter and receiver of a safety light curtain determining a beam interruption scan cycle of a timer (S11); the emitter triggering the emission of a synchronization header signal according to the beam interruption scan cycle (S12); the receiver determining a light source type on the basis of a pulse cycle time of the synchronization header signal, and determining whether the light source type of the synchronization header signal is a preset light source type (S13); and if so, the receiver executing beam interruption detection, and performing calibration on the beam interruption scan cycle of the timer, so as to perform scanning according to the calibrated beam interruption scan cycle when the receiver does not detect a synchronization header signal of the preset light source type, thereby realizing the synchronization between the emitter and the receiver (S14). A beam interruption scan cycle of a timer is calibrated after each instance of successful identification of an optical synchronization header, so as to ensure that when a synchronization header signal is lost due to interference, a timing time remains consistent with a time which is last synchronized by a synchronization header, and the timer may serve as a backup functional device for the beam interruption timing synchronization between the emitter and the receiver. Further disclosed are an optical synchronization apparatus for a safety light curtain, and a device and a storage medium.

Provided in the present application are a display apparatus and a driving method therefor. The display apparatus comprises a display panel and a control circuit, wherein the control circuit generates a ramp signal and inputs same into pixel units in N regions of the display panel, which N regions are delimited in a scanning direction, and the control circuit sequentially controls, within one frame, the pixel units of the regions to write data and emit light. The ramp signal comprises N pulse periods in each frame, and driving periods of the pixel units comprise a data writing sub-period and a light-emission sub-period, the data writing sub-period occupying one pulse period, and the light-emission sub-period occupying N -1 pulse periods. The present solution solves the problem of the brightness regulation range of existing display apparatuses being limited.

The application discloses an automatic guided vehicle cooperative positioning system, method, equipment and storage medium. The system comprises at least one light pulse transmitter and at least one vehicle body receiver. The light pulse transmitter is used to generate and emit a scanning light signal and a light pulse signal according to a synchronous light signal. The vehicle body receiving module is used to acquire a mixed signal, separate the mixed signal to generate each separated signal, and determine the vehicle body position and posture of the automatic guided vehicle based on the separated signal, wherein the mixed signal comprises the synchronous light signal, the scanning light signal and the light pulse signal. The global light synchronization mechanism is introduced, the light pulse transmitter is designed to realize the fixed cycle synchronous light signal covering the whole space, and the pulse cycle is introduced for signal separation. Through the determination of the vehicle body position and posture, the multi-guided vehicle cooperative positioning is finally realized, the positioning accuracy and reliability are improved, the more efficient and accurate cooperative transportation is realized, and the logistics efficiency and production automation level are improved.

The invention discloses a system and a method for measuring the service life of a carrier of a semiconductor wafer, which are applied to the technical field of wafer detection. The semiconductor wafer carrier lifetime measurement system comprises a signal generator, a light source and an image acquisition module. The signal generator can obtain a light source light-emitting pulse signal and an image acquisition pulse signal, and the gating opening time of the image acquisition pulse signal and the starting time of the enabling level of the light source light-emitting pulse signal have different delay durations in different light pulse periods of the light source light-emitting pulse signal. The light source can generate a pulse light beam and excite a semiconductor sample to generate carriers, and the image acquisition module can start to acquire fluorescence signals emitted by the carriers generated by the semiconductor sample in a recombination process at gating opening moments of different image acquisition periods so as to reflect a carrier recombination attenuation process. The carrier lifetime is measured through the dynamic attenuation characteristic that the intensity of the captured fluorescence signal changes along with time, and the accuracy of measuring the carrier lifetime is improved.

The invention relates to a method and an apparatus for analyzing a sample material on a sample carrier, comprising the following modes of operation: providing a time-of-flight mass analyzer having an ion generating unit, an ion generation unit having a mount for the sample carrier, an ion receiver, a flight path defining a longest flight time therebetween, an ion selector disposed along the path, and a clock generator for repeatedly triggering an ion generation pulse at the sample carrier and a subsequent pulse for accelerating ion species into the flight path; defining one or more mass-to-charge ratio (m / z) ranges, each range upper limit corresponding to a flight time shorter than the longest flight time; selecting the cycle period of the ion generation pulse so that the continuous pulse interval is shorter than the longest flight time but longer than the acceleration time; and using the mass analyzer, selecting a pulse cycle mode and an ion selector to analyze the sample material.

The invention relates to the technical field of intelligent vision, in particular to a material lifting and transporting system based on intelligent vision, which is provided with an operation module, a scanning module, a transient feature extraction module, a trend analysis module, an intelligent response module and a transportation correction module, material surface point cloud data and back protrusion point cloud data of the conveying belt are obtained through the scanning module, a transient section contour is constructed through the transient feature extraction module, contour twisting trend points are marked, the belt twisting trend is determined through the trend analysis module, and whether a trend release risk exists or not is judged. The working mode of the dumping unit is switched through the intelligent response module, and the duration of the sub-cycle in the pulse cycle is corrected through the transportation correction module, so that the transient belt twisting risk is accurately monitored, the dumping mode is flexibly adjusted, and the transportation process is intelligently corrected; and the material conveying efficiency and stability in construction operation are improved.