27 results about "Digital feedback" patented technology

The invention relates to the technical field of data processing, and discloses a digital feedback dynamic adjustment method and system for a neutron generator control signal, and the method comprises the steps: calling a reconfigurable waveform parameter set corresponding to a target neutron from a mapping relation according to the yield and beam spot characteristic demands of the target neutron; generating a basic high-frequency pulse sequence of the neutron tube, and performing pre-distortion filtering on the basic high-frequency pulse sequence to obtain a high-frequency pulse sequence of the neutron tube; collecting an anode current and a target voltage signal of the neutron tube applied with the high-frequency pulse sequence during operation, and converting the anode current and the target voltage signal into a digital feedback current; comparing the digital feedback flow with a reference waveform in the reconfigurable waveform parameter set in real time to obtain an error correction amount of the high-frequency pulse sequence; dynamically adjusting the high-frequency pulse sequence according to the error correction; applying the dynamically adjusted high-frequency pulse sequence to a corresponding electrode in a neutron tube through power; the neutron tube control signal processing efficiency can be improved.

A high-voltage (HV) power supply device outputs an output voltage based on a control signal generated by dual analog / digital feedback loops. The control signal is determined at least in part by an error amplifier that receives a measurement signal attenuated proportionally to the output voltage and an output signal from a digital-to-analog converter (DAC). The ADC also receives the measurement signal and transmits it in digitized form to a digital processor. The digital processor calculates a digital DAC data signal based on the measurement signal and a digital setpoint input signal corresponding to a setpoint voltage value desired to be output from the high-voltage source. The DAC receives the DAC data signal and converts it into a DAC output signal that is transmitted to the error amplifier.

This invention provides a control channel multiplexing and docking method, apparatus, computer equipment, and medium based on a high-speed network, comprising: configuring a logical channel connected to the control system for each test site and dynamically setting IP routing mapping relationships; converting analog feedback signals output by sensors at the first test site into digital feedback signals, encapsulating them, and transmitting them to the test control room via a high-speed real-time network; receiving a first data packet, decapsulating it, converting it into an analog feedback signal, and inputting it to the control system; converting analog control commands issued by the control system into digital control commands, encapsulating them, and transmitting them to the first test site via a high-speed real-time network; decapsulating a second data packet according to its destination IP address, converting it into an analog control command, and outputting it to the actuator; updating the IP routing mapping relationship and switching the logical channel connection when switching test sites. This enables the hardware resources of a control system to be reused.

The present application relates to the technical field of temperature change control, and discloses an intelligent control method and system for a multi-stage temperature change test box, which obtains setting information of a temperature change control network and a temperature sensing network of the test box, divides the internal space of the test box into regions, obtains a corresponding digital feedback model, collects temperature data of the test box through the temperature sensing network, and substitutes the temperature data into the digital feedback model to analyze the temperature distribution information and temperature time-varying characteristics of the internal space of the test box, obtain temperature environment information required by the current test, generate a temperature change control target in combination with the temperature distribution information, the temperature time-varying characteristics, and the temperature environment information, select a temperature control region and analyze a temperature control mode for the temperature change control target based on the digital feedback model, obtain the best temperature control region and the best temperature control strategy, place a test object in the best temperature control region, and drive the temperature change control network to control the temperature according to the best temperature control strategy.

The invention relates to the technical field of radio frequency circuits and quantum sensing, and discloses an NV color center-oriented hybrid neural network adaptive pre-distortion system and method, a storage medium and electronic equipment, and the system comprises a main signal path, a feedback observation path and a hybrid neural network pre-distortion controller; a digital predistorter in the main signal channel receives an original digital signal, predistorts the original digital signal to generate a predistorted signal, and outputs an amplified signal after the predistorted signal passes through a power amplifier; a coupler of the feedback observation path receives an amplified signal, and the amplified signal passes through an attenuator and an analog-to-digital converter and then outputs a digital feedback signal; and the hybrid neural network predistortion controller receives the original digital signal and a digital feedback signal output by the analog-to-digital converter, outputs a calibration signal required by the digital predistorter through a neural network model based on the original digital signal and the digital feedback signal, and controls the digital predistorter based on the calibration signal.

This application relates to defect detection for memory devices. A segmented digital die defect detector can include a plurality of signal lines and control circuitry each coupled with test circuitry to form a path. At least a portion of the path can extend through an interior portion of the die. The test circuitry can generate digital feedback signals indicative of a condition of a respective signal line. The control circuitry can generate a single output signal indicative of the condition of the signal lines. By utilizing digital test circuitry and a single digital output signal, a layout area of the segmented digital die defect detector can be reduced and power consumption associated with test operations can be reduced.

The invention belongs to the technical field of atmospheric trace gas detection, and particularly relates to a laser heterodyne radiometer for locking local oscillator optical power based on an adjustable optical attenuator. Comprising a variable optical attenuator and an optical fiber beam splitter, and the optical fiber beam splitter transmits local oscillation light attenuated by the variable optical attenuator to a first photoelectric detector and a frequency calibration module and carries out beam combination and frequency beating on the local oscillation light and signal light; the output end of the first photoelectric detector serves as the input end of the PID controller, a control signal is calculated and sent to the variable optical attenuator, and the frequency calibration module and the signal processing module are jointly and sequentially connected with the acquisition card and the upper computer to output a measurement result. By combining the variable optical attenuator with digital PID feedback control, dynamic and closed-loop locking of local oscillator optical power is realized, an atmospheric absorption spectrum without a slope baseline can be obtained, and the accuracy of measuring the atmospheric gas concentration by the laser heterodyne radiometer is effectively improved.

The application discloses a temperature and vibration decoupling measurement system based on an optical fiber sensor, which comprises an optical circulator for transmitting adjustable detection light to an optical fiber Bragg grating and receiving a reflected light intensity signal; after light splitting through an optical coupler, the reflected light intensity signal is converted into a first electric signal and a second electric signal by two photoelectric detectors; an analog-digital converter carries out analog-digital conversion processing on the second electric signal to obtain a digital feedback electric signal; a field programmable gate array extracts a low-frequency component in the digital feedback electric signal, compares the low-frequency component with a preset target light intensity to obtain a light intensity deviation, calculates a wavelength adjustment amount through a closed-loop control algorithm, adjusts the wavelength of the detection light to realize preset working point locking of the optical fiber Bragg grating, obtains a temperature measurement value according to the adjusted detection light, extracts a high-frequency component of the first electric signal to obtain a vibration measurement value. The application improves the stability and reliability of measurement under a non-steady-state temperature environment.

Distortion in the output of an amplifier circuit is reduced while improving driving efficiency.　An amplifier circuit according to the present invention includes: a ΔΣ modulator for outputting a digital input by reducing the bit rate thereof; a PWM unit for generating a pulse width modulation (PWM) signal on the basis of the digital output of the ΔΣ modulator; a driver for generating an analog drive signal on the basis of the PWM signal; and a digital feedback unit for applying digital feedback on the basis of the result of a ΔΣAD conversion of the drive signal. The digital feedback unit may include a ΔΣ analog to digital converter (ADC) that performs AD conversion by oversampling the drive signal.

The present application relates to a kind of laser automatic frequency locking methods based on similarity recognition spectrum, comprising: S1, digital PID feedback controller is to laser output sweep voltage;S2, obtain the spectrum signal of laser output under current sweep voltage;S3, whether there is target spectrum in current spectrum signal based on similarity recognition algorithm is determined, if exists, execute step S4;If target spectrum is not identified, adjust sweep voltage and return to execute step S1;S4, based on the locking point of similarity coefficient peak position determination current characteristic spectrum;S5, after obtaining locking point, based on the frequency locking parameter of locking point determination current characteristic spectrum, control digital PID feedback controller is based on the control amount of the frequency locking parameter and carries out PID control locking.This method can achieve the finding of various spectral characteristic peaks and locking point, wide applicability, small environmental interference and method recognition efficiency is high.

The invention relates to an impedance measurement system and an impedance measurement method. The system comprises an error current detection module, a digital vector negative feedback module and a feedback current output module. The error current detection module is used for detecting error current flowing into the input end of the error current detection module and converting the error current into a digital error signal; the digital vector negative feedback module is used for generating a digital feedback signal based on the received digital error signal and a preset orthogonal reference signal; and the feedback current output module is used for converting the received digital feedback signal into an analog feedback current until the error current value is 0. Through high-precision digital vector negative feedback, the error current corresponding to the measured device can be eliminated in a wide frequency range, the current measurement accuracy of the measured device is improved, and the impedance measurement accuracy of the measured device is further improved.

The invention discloses a self-adaptive wireless energy and signal simultaneous transmission device integrated with a QC feedback loop, which relates to the technical field of wireless energy and signal simultaneous transmission and comprises a transmitting end, a receiving end and a wireless channel. The transmitting end comprises an energy information fusion signal generator, a multi-mode transmitting coil array, a quantum channel state decoder and a cognitive adaptive controller. According to the method, channel state parameters are mapped to quantum states of entangled photons through quantum entanglement pair sources of a quantized feedback signal generator, and instantaneous correlation transmission of channel state information is achieved through feedback signals by means of quantum entanglement characteristics. A transmitting end does not need to completely deadjust feedback data packets, the channel state can be rapidly obtained through quantum state comparison, the delay bottleneck of traditional analog and digital feedback links is thoroughly broken through, and a system can capture channel microscopic changes in time.

The invention discloses a USB data stream adaptive transmission method, device and equipment, a medium and a product, and relates to the technical field of communication transmission, and the method comprises the following steps: after a data stream transmission channel is established through a C-type interface, sending a target USB data stream to USB receiving equipment; and in the sending process, the data sending rate of the target USB data stream is updated in real time according to the digital feedback signal output by the analog-to-digital conversion module and a pre-constructed feedback signal control protocol until the target USB data stream is completely sent. The control information is fed back through the analog-to-digital conversion module, the USB data stream is adjusted in real time according to the data receiving state, the problems of data stream loss, overload and underload are avoided, the transmission efficiency of the whole data stream is optimized, and the reliability of data stream transmission is improved. And the pins in the C-type interface are multiplexed to transmit the feedback signal and the sending rate update instruction, so that the equipment connection is simplified, the equipment cost is reduced, and the integration level of the system is improved.

The invention discloses a self-adaptive clock data recovery device and method based on dual-mode clock frequency division and duty ratio modulation, and relates to the technical field of high-speed serial communication circuits. The self-adaptive clock data recovery device comprises a phase discriminator which is configured to be used for sampling an input data stream and generating an error signal indicating phase alignment; according to the invention, a mixed signal architecture is utilized to extract a time sequence from high-speed serial data, the system adopts an adaptive clock frequency divider, a target average frequency is synthesized by rapidly switching between two different frequency division factors, a digital feedback loop driven by a phase discriminator and a smoothing filter actively modulates the duty ratio of a frequency divider control signal, and the time sequence is extracted from the high-speed serial data. By selectively introducing higher or lower frequency cycles in the generated clock stream, the system accumulates precise phase offsets to align the recovered clock with the data, this approach provides an energy efficient and area efficient alternative for traditional designs that depend on complex analog phase interpolators.

A circuit comprising (1) one or more input devices configured to sense analog inputs, (2) at least one analog-to-digital converter communicatively coupled to the input devices and configured to convert the analog inputs into digital inputs, (3) at least one filter component communicatively coupled to the analog-to-digital converter and configured to output digital feedback based at least in part on the digital inputs, and (4) a digital-to-analog converter communicatively coupled to the filter component and configured to (A) convert the digital feedback into analog feedback and (B) output the analog feedback to facilitate removing the analog feedback from the analog inputs. Various other apparatus, systems, and methods are also disclosed.

In one aspect, a device comprises: a dual-mode power amplifier for amplifying a first radio frequency (RF) signal of a first wireless protocol according to a linear operating mode and for amplifying a second RF signal of a second wireless protocol according to a non-linear operating mode; at least one digital feedback circuit coupled to the power amplifier, wherein the at least one digital feedback circuit provides feedback information; and a controller for controlling the power level of the dual-mode power amplifier, at least partially based on the feedback information.

Methods and apparatuses are described to provide digital feedback reduction (DFR) that may reduce or eliminate the presence of feedback in digital audio signals. The DFR techniques as described herein may implement a fast and reliable detection process to help ensure a minimal false detection probability. Furthermore, the DFR techniques as described herein may support a wider frequency range compared to conventional DFR techniques, for instance from 20 Hz up to at least 20 kHz.

The present application relates to the technical field of data processing, and discloses a kind of digital feedback dynamic adjustment method and system of neutron generator control signal, the method includes: according to the yield of target neutron and beam spot characteristic demand, from mapping relationship, call the corresponding reconfigurable waveform parameter set of target neutron;Generation of the basic high-frequency pulse sequence of neutron tube, and the basic high-frequency pulse sequence is pre-distortion filtering, obtain the high-frequency pulse sequence of neutron tube;Anode current and target pressure signal of neutron tube in running when high-frequency pulse sequence is applied are collected, and anode current and target pressure signal are converted into digital feedback stream;Digital feedback stream and reference waveform in reconfigurable waveform parameter set are compared in real time, and the error correction amount of high-frequency pulse sequence is obtained;According to error correction amount, dynamically adjust high-frequency pulse sequence;Dynamic adjustment high-frequency pulse sequence is applied in corresponding electrode in neutron tube by power;The present application can improve the efficiency of neutron tube control signal processing.

This application is directed to changing the time averaging of feedback for a memory system. An apparatus can include a voltage supply, a memory array, and a regulator coupled with the voltage supply and memory array and configured to supply a first voltage received from the voltage supply to the memory array. The apparatus can also include a voltage sensor configured to measure a second voltage of the memory array, and a digital feedback circuit coupled with the memory array and regulator and configured to generate feedback comprising information averaged over a duration of time based at least in part on the second voltage measured by the voltage sensor, and transmit an analog signal to the regulator based at least in part on the feedback.

The invention discloses a two-stroke piston engine air inlet control system and method based on steering engine angle feedback, and relates to the technical field of aviation and power machinery. The system comprises a CAN bus digital feedback steering engine, an electronic control unit (ECU), a crankshaft position sensor, an oil injection control module and a mechanical throttle valve structure, and four throttle valves of the horizontally-opposed four-cylinder engine are controlled to act synchronously through linkage of the single steering engine. The control method is characterized in that an angle detection unit of the steering engine is used for collecting the rotation angle of an output shaft, the rotation angle is transmitted to an ECU through a CAN bus, the rotation angle is directly mapped into the opening degree of a throttle valve through a built-in program or algorithm of the ECU, and a traditional throttle valve position sensor (TPS) is omitted; the ECU calculates oil injection parameters by combining the crankshaft rotating speed and the phase signals, drives the oil injector to act, and meanwhile adjusts the opening degree of the throttle valve in real time through closed-loop control. The system structure can be simplified, the cost is reduced, the whole control system is more compact, the signal transmission reliability is improved, the response speed is increased, and the system is suitable for light aircraft power systems such as small unmanned aerial vehicles.

This application belongs to the field of semiconductor packaging equipment and relates to a driving circuit and method for aging detection and short-circuit protection, and a piezoelectric clamp driver. It includes a digital controller, a driving module, a detection and protection module, and a feedback module. The digital controller generates a digital control signal and sends it to the driving module. The driving module generates a driving voltage based on the received digital control signal and sends the driving voltage to the piezoelectric load through the detection and protection module. A voltage divider is formed between the detection and protection module and the piezoelectric load. The feedback module dynamically acquires the electrical signal on the piezoelectric load, converts it into a digital feedback signal, and feeds it back to the digital controller. The digital control signal and the digital feedback signal are compared and analyzed to distinguish between aging and short-circuit states. The technical solution provided by this application has extremely low cost and simultaneously provides aging detection and short-circuit protection capabilities for piezoelectric clamps. It provides a warning before the piezoelectric load breaks down and protects the driver from overcurrent damage after the piezoelectric load breaks down.

The application provides a vertical pump integrated machine controller and a control system thereof, which comprises a power driving module, a protective cover arranged outside the power driving module, a pump body fluid conveying module connected with the power driving module, and a connecting and fixing module connected with the pump body fluid conveying module. The system adopts a permanent magnet synchronous motor and a speed sensorless vector control, combines embedded edge computing and an adaptive algorithm, and improves control precision. A dynamic energy efficiency optimization module adjusts operation parameters in real time according to sensor data and a pump characteristic curve, and ensures efficient operation. A multi-modal fault prediction module fuses current, pressure difference and vibration data, identifies early faults such as bearing wear and cavitation in advance through a lightweight convolutional neural network, gives a graded early warning, displays on a liquid crystal screen, and is convenient for rapid maintenance. An intelligent valve linkage module realizes closed-loop cooperation of exhaust and drainage valves and a pump body, automatically optimizes start-stop processes, eliminates cavitation and residual damage, and guarantees execution reliability through digital feedback.

The invention relates to the technical field of pulping machines, and particularly discloses a digital display pulping machine grinding disc gap monitoring system, which comprises a mechanical transmission and indication unit, an electric measurement unit and a control unit, the mechanical transmission and indication unit comprises a movable seat, a guide key, a fixed plate, a scale and a cover plate; the guide key is mounted on the movable seat, the fixed plate is fixedly mounted on the guide key through a bolt, and the scale is fixedly mounted on the fixed plate; according to the invention, rapid and visual mechanical reading is carried out through the ruler, high-precision real-time digital feedback can be obtained from the digital display meter, and the reading convenience and accuracy are improved. Meanwhile, the linear displacement sensor is combined with a zero-adjustable scale, and is matched with an intelligent calibration algorithm of the control unit, so that a user can be automatically prompted to compensate for measurement errors caused by abrasion of the abrasive disc or can be prompted to compensate for the measurement errors caused by abrasion of the abrasive disc.

A wireless communication device and a method for IQ calibration are provided. The device includes a transmitting unit for generating a set of RF transmitting signals based on a set of digital baseband signals, each of the set of RF transmitting signals has IQ components; a receiving unit for generating a set of digital feedback signals based on a set of RF receiving signals obtained from the set of RF transmitting signals; a processing unit for obtaining a first set of compensation coefficients for the transmitting unit and a second set of compensation coefficients for the receiving unit based on the set of digital baseband signals and the set of digital feedback signals with an IQ calibration model, the IQ calibration model includes a first high-order term set about a nonlinear error in the transmitting unit and a second high-order term set bout a nonlinear error in the receiving unit.

A modular, ergonomic training system designed to teach and evaluate laparoscopic surgical skills through a collapsible frame featuring adjustable trocar ports that simulate real-world surgical scenarios for both right- and left-handed users. It includes a pegboard for attaching various training modules to practice tasks like object manipulation, precision cutting, and suture tying. The system integrates augmented reality (AR) and artificial intelligence (AI) for real-time, step-by-step guidance and performance analysis. AR overlays on a live video feed from a tablet mounted on the frame offer visual instructions, while AI algorithms evaluate metrics such as precision and technique, providing personalized feedback and automated skill assessment. Additional features include a rechargeable light source that mimics clinical lighting and reflective surfaces for enhanced performance monitoring. The system enables efficient, scalable training with cloud-based data storage for tracking progress, supporting remote coaching and long-term skill development.

We provide laser transmission circuits, laser transmission assemblies, and electronic measuring instruments that eliminate errors that occur in analog signals during the transmission of laser signals. [Solution] The laser transmission circuit includes an analog emission unit 10 that converts an input analog signal into an analog laser signal and emits it, an analog receiving unit 20 that converts the analog laser signal into an analog electrical signal and outputs it, and a digital feedback pathway 30 whose input is connected to the output of the analog receiving unit 20 and whose output is connected to the input of the analog emission unit 10. The digital feedback pathway 30 receives an analog electrical signal from the analog receiving unit 20, converts the analog electrical signal into a digital signal and transmits it, and the digital feedback pathway 30 further converts the transmitted digital signal into a low-frequency analog signal and outputs it to the input of the analog emission unit 10.

The invention provides a signal processing method and device, electronic equipment, a chip and a storage medium, and relates to the field of communication, and the method comprises the steps: obtaining a signal pair; the signal pair comprises a digital calibration signal input into the digital predistorter and a digital feedback signal obtained by post-processing the digital calibration signal through the radio frequency power amplifier; the amplitude of the digital calibration signal is smaller than the initial power point of the radio frequency power amplifier, and the initial power point is determined according to the power point where the output gain of the radio frequency power amplifier deviates from the linear trend; and determining a digital predistortion coefficient associated with the digital predistorter according to the digital calibration signal, the digital feedback signal, the starting power point and the non-uniform piecewise linear model. Therefore, by introducing a non-uniform segmentation mechanism guided by the initial power point based on the PA, flexible adaptation and refined modeling of nonlinear characteristics of different PAs are realized, and the modeling accuracy and correction robustness of the DPD under complex working conditions are remarkably improved.