491 results about "Phase offset" patented technology

The invention relates to a rectification harmonic suppression control method for a double reverse star transformer. The method comprises the following steps: establishing a rectifier bridge arm phase characteristic parameter table in a control platform, and recording a theoretical conduction phase, winding attribution and waveform synchronization characteristics of a bridge arm; in the operation process of the rectification control unit, the output current of a transformer and the conduction state of a bridge arm are collected, and a rectification operation state data set is generated; and calculating bridge arm conduction phase deviation, and analyzing a corresponding harmonic component to obtain a mapping relation between a bridge arm state and harmonic distribution. And judging whether the current bridge arm configuration meets the phase coverage requirement of the target rectification pulse number or not according to the mapping result, and if not, selecting a standby bridge arm group with a preset phase difference and generating a switching instruction. And the rectification control unit responds to the instruction to lock the current bridge arm conduction path and release the target bridge arm group so as to realize bridge arm resource dynamic reconstruction and rectification performance optimization. Harmonic waves can be effectively suppressed, and the topology adaptability and the output quality of the rectification system are improved.

The invention provides a medical equipment fault detection method and system based on machine learning, and relates to the technical field of fault detection. The method comprises the steps of monitoring motor start-stop division operation cycles, synchronously collecting and processing vibration, frequency difference and voltage signals, calculating characteristic difference to generate a dynamic sequence, extracting a non-convergence trend and phase deviation, fusing voltage and frequency fluctuation characteristics, constructing a threshold rule to judge abnormity, and outputting a light fault early warning signal. According to the invention, through precise monitoring of motor start-stop nodes, period division, collection of vibration, frequency and voltage signals, combination of time alignment and noise filtering, improvement of signal quality, cross-period calculation of characteristic difference, and extraction of non-convergence trend and phase offset, the ability of capturing tiny anomalies is enhanced; according to the method, multi-dimensional indexes such as voltage fluctuation and frequency deviation are fused, a threshold judgment mechanism in a continuous window is constructed, stable identification and early warning of equipment light faults are achieved, and the detection accuracy and response timeliness are improved.

The invention belongs to the technical field of signal synchronization, and discloses a multi-camera anti-shake time sequence synchronization control system and method based on an FPGA. The method comprises the following steps: taking an FPGA as a core, generating an FSYNC signal as a camera exposure reference, and obtaining a delay value through a timestamp and differential measurement; acquiring I MU data and obtaining a global motion vector through a gradient descent algorithm; analyzing by combining the two to obtain phase deviation and feeding back the phase deviation to the FPGA, and adjusting the FSYNC signal by combining the global motion vector by the FPGA according to the phase deviation; according to the method, nanosecond timestamp recording is realized through a homologous clock reference and hardware-level signal binding mechanism, and the limitation of dependence on static time difference compensation in the prior art is broken through in combination with global motion vector analysis and dynamic phase offset adjustment.

The invention relates to the technical field of digital management, in particular to a digital management system for cold heading and heat treatment processing of fasteners, which comprises a phase deviation identification module, a load regulation and control parameter generation module, a heat treatment efficiency regulation and control module, a defect type association control module and an early warning instruction output module. According to the method, a load change node is positioned through a main shaft angle value, synchronous offset between a main shaft and a slave shaft is identified by combining multi-shaft displacement and load data, an angular displacement point in an impact rhythm, a corresponding speed and a holding time length set value are extracted, and targeted impact regulation and control parameters are formed; in the heat treatment stage, the fluctuation trend of heat conduction efficiency is recognized by combining the surface area and temperature rise data of the fastener, process response establishment of multiple types of defects is achieved by combining the crack size, the hardness value and the surface atlas label in the machining period, and shutdown and feeding interruption signals are issued to the control terminal according to the machining beat continuous triggering condition. Defect closed-loop linkage control in the fastener cold heading and heat treatment process is achieved.

The invention relates to the technical field of wireless communication, and discloses a compensation method for electronic radio frequency communication. According to the compensation method for the electronic radio frequency communication, the radio frequency signal and the channel state information are acquired, the original data set is generated, and the preprocessing steps of denoising, signal amplitude correction, phase correction and the like are performed, so that the data quality is improved, accurate parameter evaluation is performed by adopting the minimum mean square error, the accuracy of channel characteristic parameters is ensured, and the communication quality is improved. A mathematical model constructed based on the parameters enables calculation of compensation parameter gain and phase deviation to be more accurate, so that attenuation and distortion caused by signal propagation in a channel are effectively compensated, and finally, quality evaluation is carried out on the bit error rate and the signal-to-noise ratio of the compensated signal, so that the compensation effectiveness is ensured, and the signal quality is improved. And if the compensation is invalid, the calculation can be returned in real time for recalculation, so that the quality of the whole signal is improved.

The invention relates to the technical field of power system court management, and particularly discloses a court identification and user binding method based on a special transformer acquisition terminal, which comprises the following steps: separating harmonic interference generated by start and stop of an electric welding machine through a kurtosis index and time-frequency energy entropy fusion detection method, and extracting a fundamental voltage and a pure power signal; constructing a dynamic time bending model containing phase consistency and gradient feature constraint based on the fundamental wave voltage, and calculating voltage track similarity to judge electrical coupling; for the users with electrical coupling, dynamic weight power cross-correlation analysis is fused to generate a comprehensive decision value, and a space-time diagram neural network is utilized to update a transformer area topology structure online in combination with a historical topology change event, so that the dynamic determination of the transformer area to which the users belong is realized; through multi-dimensional feature fusion and anti-interference algorithm design, the problems of phase deviation and waveform distortion caused by electric welding machine harmonic waves are reduced, and the transformer area identification accuracy and real-time performance are improved.

The invention discloses a carrier tracking method suitable for a multi-bit spread spectrum signal, and relates to the technical field of multi-bit spread spectrum, the carrier tracking method comprises the steps of coarse frequency offset correction, multi-bit spread spectrum, average phase estimation and delay phase correction.The carrier tracking method comprises the steps that firstly, a sliding DFT algorithm is adopted to estimate frequency offset, and a coarse frequency offset available correction signal is obtained; secondly, adaptively selecting the number of available windows according to historical data corresponding to the current signal-to-noise ratio; the method comprises the following steps: firstly obtaining a window intermediate point spread spectrum period, then extracting a carrier phase estimation value of the window intermediate point spread spectrum period, finally delaying a correlation value by the spread spectrum period to realize time sequence alignment and eliminate phase deviation, and finally obtaining information bits corresponding to each spread spectrum period by extracting and correcting a real part of the correlation value, matching a local sequence number and mapping. According to the method, the phase estimation precision under the low signal-to-noise ratio can be improved, parameter self-adaption to high and low dynamic scenes of a satellite is realized, the coherent judgment performance is improved, and the hardware complexity is reduced.

The invention relates to a zero calibration weak measurement high-sensitivity interval compensation method and system, and the method comprises the steps: collecting the light intensity data of two paths and four channels in a zero input state, solving the asymmetry caused by the loss difference of the channels through a weak measurement method, and carrying out the calculation of the asymmetry. And correcting the post-selection state and the compensation sensitivity of the system according to the intensity difference of the output projection to the horizontal polarization state and the vertical polarization state, calculating the phase offset of a high-sensitivity interval according to the loss difference of the four channels, generating a compensation phase, and modulating the center of the high-sensitivity interval to a working point. Compared with the prior art, high-sensitivity loss and high-sensitivity interval offset caused by system asymmetry can be corrected through phase compensation and post-selection state correction, it is ensured that a measurement system always works in an optimal sensitivity interval, the measurement sensitivity and stability of a photoelectric detection system under weak measurement are improved, and the measurement accuracy is improved. The method is suitable for application scenes with strict requirements on tiny signal detection.

The invention relates to the technical field of pulse acquisition, in particular to a high-speed ADC (Analog to Digital Converter) and FPGA (Field Programmable Gate Array) coordinated extremely-narrow pulse signal acquisition system, which comprises a phase identification monitoring module, a phase lock reference updating module, a sampling permission control module, a prohibition feedback identification module and a synchronous trigger adjustment module. According to the method, a beat tolerance judgment mechanism is introduced, hyper-bound phase deviation trend statistics and frequency vector extraction are combined, beat correction is carried out by utilizing a directional hopping cumulant and a period adjustment amount, a sampling permission judgment and keeping window alignment mechanism is introduced in a multi-frame period, and a two-way judgment means of a sampling starting trigger value is adopted, so that the beat tolerance of the multi-frame period is judged. And meanwhile, centralized extraction and frequency directivity statistics are carried out on the hopping direction in the sampling prohibition time sequence, the synchronous mismatch trend is distinguished, and the initial beat position is adjusted, so that the time domain characteristics of the narrow pulse waveform are kept continuous, the edge response is prevented from deviation, the trigger structure is stable and reliable, and the overall sampling judgment is more accurate and efficient.

The invention provides a pulse signal adaptive filtering method and system based on multi-band signal entropy. The method comprises the following steps: receiving a plurality of satellite communication signals of different frequency bands, and extracting a phase offset, an amplitude value and a frequency value; and generating a multi-dimensional feature group of each frequency band, and extracting the signal-to-noise ratio and the frequency variation of the corresponding frequency band from the multi-dimensional feature group. And based on the signal-to-noise ratios and the frequency variations of all the frequency bands, dynamically adjusting filtering parameters through a preset three-stage tuning structure, and filtering to obtain a filtered signal. Transmitting the filtered signal to a federated learning framework, and calculating a multi-band signal entropy value by combining the multi-dimensional feature group; adaptive filtering parameters are optimized based on entropy values, global aggregation is carried out after differential privacy processing, and an aggregation feature graph group is generated; and through a channel and a space attention mechanism, effective information of a high-entropy frequency band is enhanced, noise of a low-entropy frequency band is suppressed, and pulse signal adaptive filtering based on multi-frequency-band signal entropy is completed. According to the technical scheme provided by the invention, the accuracy of adaptive filtering of the pulse signal is improved.

The invention provides a Flash wafer detection method and device based on deep learning, and relates to the technical field of semiconductor detection. The method comprises the following steps: firstly, receiving an initial electric signal response sequence which is acquired by a scanning probe and comprises reflection intensity and phase deviation; performing time-frequency domain joint transformation processing on the sequence to generate a frequency domain energy distribution map and a time domain attenuation characteristic curve; further constructing a three-dimensional space mapping model containing a frequency domain energy amplitude and a time domain attenuation time constant; a pre-trained condition generation network is called to reconstruct the model, and a reconstructed phase image set with the resolution consistent with that of a standard template is generated; and finally, performing pixel-by-pixel comparison on the reconstructed image and a standard template to generate a detection report containing defect space positioning coordinates and a contour boundary sequence. According to the method, deep mining and visual reconstruction of Flash wafer microscopic electric signal features are realized, and the accuracy and the automation degree of defect detection are remarkably improved.

The invention relates to the technical field of industrial automation control, and discloses a distributed collaborative and intelligent master control system for a candy production line, which comprises a master control unit and a plurality of resource nodes which are connected with each other through an industrial field bus supporting a precise clock synchronization protocol, the general control unit generates and broadcasts a virtual main shaft position signal to define a system time sequence progress; each resource node corresponds to a physical execution unit with different physical response hysteresis characteristics, an electronic cam curve table for defining a mapping relation between a control set value and a virtual spindle position signal is stored, the resource nodes are configured with phase lead compensation logic, and a phase offset is superposed before the curve table is inquired, so that the phase lead compensation is realized. According to the method, phase pre-compensation is introduced in a logic instruction level, so that the problem of cooperative mismatch caused by response inertia difference of heterogeneous physical execution units is solved, and accurate alignment and seamless flexible remodeling of multi-section actions in a time domain are realized.

The invention provides a probe frequency response calibration parameter determining method, a probe frequency response calibration parameter measuring system and a storage medium, and the probe frequency response calibration parameter determining method introduces a composite test signal including a steady-state frequency sweep signal and a transient pulse signal. De-embedding calculation is carried out on a data set which is obtained under the two conditions that a probe is not connected to a calibration system and the probe is connected to the calibration system and responds to the same test signal, namely amplitude division is carried out to eliminate link gain deviation, phase subtraction is carried out to strip channel phase deviation, accurate extraction of the independent frequency response characteristic of the probe is achieved, and the accuracy of the independent frequency response characteristic of the probe is improved. Therefore, the frequency response calibration parameter of the probe is determined. According to the invention, system errors introduced by a test environment and a rear-end measurement link are eliminated, the calibration precision of the amplitude-frequency characteristic and the phase-frequency characteristic of the probe in a full working frequency band is improved, and a reliable basis is provided for implementation of accurate real-time anti-distortion compensation in actual signal acquisition of measurement equipment such as an oscilloscope and the like; and the reduction authenticity of the whole measurement system in the high-frequency and broadband signal test is ensured.

The invention discloses a metering equipment remote calibration method and device, a medium and equipment. The method comprises the following steps: calculating a loss index according to current characteristics of an extracted current signal in a monitoring period, and determining a phase offset of each harmonic based on the loss index; constructing an environment gain coefficient according to the environment temperature and the environment humidity in the environment management period; constructing a current correction coefficient according to the fundamental wave amplitude of the current signal in the monitoring period and the environment gain coefficient; and correcting each harmonic amplitude in the next monitoring period according to the current correction coefficient, and correcting each harmonic phase in the next monitoring period according to the phase offset of each harmonic to obtain a calibration current in the next monitoring period.

The invention relates to the technical field of electromagnetic measurement, and discloses a measurement unit stabilization method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining three-dimensional displacement trajectory data in real time, and building a motion error compensation model containing a mechanical vibration direction vector and a phase offset; on the basis of asymmetric magnetic pole distribution, combined with phase difference calculation of a magnetic circuit gradient direction vector and a mechanical vibration direction vector, a closed loop current orthogonal to the mechanical vibration direction vector is generated on an interface to realize gradient isolation; based on a multi-branch common-mode suppression mechanism, an interference signal reaches a preset attenuation amplitude before a loop is closed through combination of a magnetic core impedance matching characteristic and an eddy current effect; and performing dynamic matching based on the displacement parameter and an electromagnetic interference attenuation result, adjusting a magnetic pole inclination angle in real time, and forming a closed-loop control path of magnetic field gradient compensation and mechanical vibration suppression. According to the invention, the stability and anti-interference capability of the measuring unit under severe working conditions can be improved.

The invention discloses an electric energy metering method and system for reducing multi-loop cross interference, and the method comprises the following steps: collecting the real-time voltage and real-time current of each loop in a multi-loop electric energy meter at a first frequency, and synchronously recording the load type and operation state of each loop; the method comprises the following steps: collecting real-time data, pre-identifying a high-risk interference scene according to the collected real-time data, dynamically adjusting a sampling frequency according to an identification result, enabling the adjusted sampling frequency to be a second frequency, analyzing harmonic characteristics, phase offset, amplitude fluctuation rules and the like with extracted sampling data, positioning a cross interference source between loops, identifying an interference transmission path, and carrying out high-risk interference scene identification. Voltage or current data of the interfered loop are corrected in real time, interference parameters are adjusted and compensated in a self-adaptive mode, and accurate metering data are output. According to the invention, the problem that the traditional metering mode is difficult to meet the current high-precision and high-reliability electric energy metering requirements in an actual complex electricity utilization scene can be solved, and the electric energy can be accurately metered.

A circuit for a MEMS gyroscope having at least one mass excitable to an oscillatory motion. The circuit includes: a signal generator circuit for generating a periodic test signal, the test signal being applicable to a first MEMS-side signal input of a driver circuit and / or to a second MEMS-side signal input of a readout circuit and causing a response measurement signal, so that the phase offset between a demodulation signal and the response measurement signal can be determined on the basis of the response measurement signal. A corresponding method for operating a MEMS gyroscope is also described.

The invention belongs to the technical field of time sequence calibration, and relates to a core particle parallel interface time sequence calibration method, which comprises the following steps of: introducing a phase interpolator with 180-degree phase deviation in a clock path of a receiving end, and positioning a sampling clock at the center of a data eye diagram; in a data path of a receiving end, a coarse adjustment delay calibration unit is firstly adopted to carry out periodic delay compensation, and the coarse adjustment delay calibration unit adopts a numerical control delay line structure to carry out delay adjustment; and then, a fine adjustment delay calibration unit is adopted to further realize sub-period-level delay adjustment, the fine adjustment delay calibration unit adopts a phase interpolator structure and a dynamic fine adjustment calibration mechanism, and finally, the delayed data signal and the clock signal are aligned at a receiving end. According to the invention, the binary search method is introduced, the positioning speed of the optimal delay configuration is obviously improved, delay drift is fully considered, a dynamic calibration mechanism is added, a sampling window is constructed based on a phase interpolator, and a high-precision and dynamic calibration effect is realized.

The invention particularly relates to a method for converting pseudo code capture into tracking phase compensation under clock frequency offset. The method comprises the steps of band-pass sampling and digital down-conversion, local pseudo code sequence generation, twice pseudo code capture and phase compensation. Selecting a sampling frequency and processing a signal through a band-pass sampling theorem, and generating a local pseudo code based on a Gold code; a PMF-FFT method of a mobile pseudo code is adopted to complete first-time pseudo code capture, a multiplexing capture module executes second-time full-range capture, and pseudo code phase offset is accurately calculated; and finally, adjusting the local pseudo code phase through the total phase compensation value, so that the phase difference between the input signal and the local pseudo code is controlled within a half chip. According to the method, hardware cost does not need to be increased, the problem of inaccurate phase compensation under clock frequency offset, large frequency offset and low carrier-to-noise ratio scenes is effectively solved, it is guaranteed that pseudo code capture is smoothly converted into tracking, and the tracking reliability of a receiver is improved.

The invention provides a differentiated gating and resource reservation method and device for a 5G-TSN system. The differentiated gating and resource reservation method and device for the 5G-TSN system are used for solving the problem that end-to-end deterministic transmission performance cannot be guaranteed due to wireless air interface fluctuation and service competition in a 5G and TSN fusion network. The method comprises the following steps: a TSN controller identifies key network resources, performs gating compression and phase offset processing on the key network resources, generates an end-to-end plan containing a TSN stream expected transmission time slot, and sends the end-to-end plan to a 5G base station; after receiving, the base station reserves a protection TTI and pre-configures a resource block in TTIs outside the planned time slot; and when transmission abnormity occurs in the planned time slot, immediately starting the resource block to carry out remedial transmission on the TSN flow. According to the scheme, through cross-domain collaborative differentiated scheduling and redundant resource reservation, the end-to-end delay and jitter are remarkably reduced while the resource utilization efficiency is improved, and a reliable deterministic transmission guarantee is provided for high-priority services.

The invention discloses an ultrasonic stress-induced ice layer breaking deicing method, system and device for an insulator, and the method comprises the steps: sequentially transmitting a first frequency detection signal and a second frequency detection signal through an ultrasonic transmitting unit, collecting a reflection signal, and judging whether ice coating exists or not based on the characteristic difference of amplitude attenuation, propagation time difference and phase offset; if icing exists, deicing ultrasonic waves with initial power are transmitted, a power adaptive adjustment model is constructed by using real-time signals reflected by an icing layer, and the deicing power is dynamically optimized in combination with the characteristic change rate; the double-frequency signals are transmitted again at regular intervals, and after re-check reflection signals are collected and subjected to temperature correction, whether ice coating is completely removed or not is judged through characteristic differences; the system comprises an ultrasonic transmitting / receiving module, an icing judgment module and a power adaptive adjustment module. The device comprises a high-frequency ultrasonic generator, an ultrasonic transducer and a microcontroller. The device realizes integration of ultrasonic detection, deicing and effect verification, and is suitable for various insulator winter icing removal scenes.

According to an embodiment, a system for synchronizing a stylus-enabled device with a stylus is proposed. The stylus-enabled device includes a touch controller configured to transmit an uplink signal to the stylus, receive a downlink signal from the stylus, determine a timing offset between the uplink signal and the downlink signal, determine a phase shift of the downlink signal, and adjust a synchronization timing based on the determined timing offset and the determined phase shift.

The invention discloses a PWM modulation method based on adaptive zero-sequence injection, and the method comprises the following steps: obtaining a first zero-sequence component and a second zero-sequence component, and setting a phase offset for the second zero-sequence component; superposing the first zero-sequence component and the second zero-sequence component with the phase offset through the zero-sequence concentration ratio to obtain a unified zero-sequence component for generating a modulation signal; in the hybrid modulation process of PWM, the modulation signal is continuously and smoothly switched between SVPWM (Space Vector Pulse Width Modulation) modulation and DPWM (Digital Pulse Width Modulation) modulation by adjusting the values of zero sequence concentration ratio and phase offset in a unified zero sequence component. The beneficial effects of the invention are that the method can achieve the self-adaptive compromise between the low harmonic distortion of SVPWM modulation and the low loss of DPWM modulation in the modulation process through the value adjustment of the zero-sequence concentration ratio and the phase deviation; meanwhile, the whole modulation switching process is continuous, no duty ratio step exists, and current impact and harmonic jump can be effectively avoided.

A hearing device, in particular a hearing aid, includes a multi-feed antenna apparatus with at least two antenna branches. Each antenna branch is connected to a line. The lines are interconnected at a connection point and are routed through a filter and a first matching network to a transceiver circuit. A second matching network is assigned to each antenna branch for a phase shift and matching. A multi-feed antenna apparatus for the hearing device is also provided.

The invention discloses a method and a system for determining a multi-loop control parameter setting value of a network-constructed converter, and relates to the technical field of network-constructed converters, and the method comprises the following steps: based on the real-time operation state of a voltage outer loop of the network-constructed converter, extracting a time synchronization sequence of a delay compensation amount and a phase offset amount, generating a dynamic response curve of the voltage outer loop after sudden change of the external load is triggered; and according to the dynamic response curve, performing self-constraint processing on the delay compensation amount. According to the invention, through the self-constraint and amplitude limiting control of the delay compensation amount, the virtual impedance keeps inductive response under the sudden change of the load, energy reflux and oscillation caused by phase inversion are prevented, and the voltage stability and the dynamic response performance are improved; meanwhile, multi-loop coordination and energy self-balancing are achieved through energy flow balance regulation and self-adaptive damping adjustment, high-frequency energy fluctuation is effectively restrained, and stable operation and parameter setting precision of the grid-forming type converter under the complex working condition are guaranteed.

The invention discloses a self-reference three-phase polarization imaging system and method based on an integrated photon neural network, and the method comprises the steps: setting a fixed phase difference in a silicon-based photon chip to achieve three-phase projection and single-port reading, outputting a three-phase interference signal at the same time, obtaining all phase and polarization information in one-time imaging to achieve full-polarization measurement, and carrying out the single-port reading of the silicon-based photon chip; according to the invention, the effective resolution ratio is consistent with that of an original detection array, power and temperature drift is eliminated, single-frame acquisition has no time sequence error and motion artifact, a stable and compact single-port self-reference reading mode is realized through a three-phase interference measurement architecture constructed on a chip in combination with channel normalization and rotation correction, and complete Stokes parameters and polarization information can be measured. According to the system provided by the invention, the MZI is adopted, so that the phase bias can be flexibly adjusted, and different bandwidth requirements can be met by adjusting an interference path. The silicon-based photon platform has a broadband response characteristic and can cover a visible wave band, so that the device can keep stable interference performance in a communication wave band.

The invention discloses a line loss positioning method based on phase feature clustering, belongs to the technical field of power system line loss treatment, and constructs a three-dimensional feature space through high-frequency collection of HPLC carrier signal phase offset, current ripple frequency spectrum features and intelligent electric meter load rate to comprehensively characterize the equipment operation state. An improved DBSCAN clustering algorithm is utilized, the neighborhood radius is dynamically calculated according to the feature space density, the minimum sample number MinPts is adaptively set according to the transformer area equipment scale, and clustering parameter adaptation is achieved; meanwhile, a noise filtering mechanism is introduced, secondary verification is carried out on initial clustering noise points, effective abnormal points are screened out by calculating local density and overall average density, and the misjudgment rate is reduced. The method can quickly and accurately position the position of the line loss abnormal equipment, greatly improves the line loss abnormal processing efficiency, can be widely applied to power distribution network line loss management, effectively improves the line loss analysis accuracy and treatment efficiency, and provides powerful technical support for reducing the power grid loss and improving the power supply reliability.

The invention discloses a DAC output error correction method based on digital compensation, and the method comprises the steps: collecting the amplitude deviation, phase deviation and time sequence jitter data of a DAC output signal through a quantum sensing DAC calibration analysis platform, and constructing a multi-dimensional error original data set; calling an operational amplifier imbalance dynamic coupling prediction model to analyze a coupling relationship, and extracting dynamic association features; separating harmonic components and screening error contribution factors based on a broadband DAC harmonic distortion correction model; calculating a gradient change rule and an extreme point position by adopting a differential nonlinear gradient correction model; and integrating the characteristics and the parameters to construct a digital compensation parameter matrix, and dynamically adjusting an output code value through real-time digital modulation to realize error correction. According to the method, dynamic association and distribution characteristics of multi-source errors are accurately captured through multi-model collaborative operation and full-process closed-loop processing, multi-dimensional error synchronous correction is achieved, and DAC output precision and working condition adaptability are improved.

Systems and methods are disclosed for phase calibration between clock and data lanes at a data link receiver. In calibration mode, matching signals are transmitted over the clock and data lanes, and a phase offset is measured at the receiver. A phase shifter in one signal path is adjusted to a first phase to obtain a desired phase offset. For operation mode, the phase shifter is set based on the first phase. Embodiments measure phase offset using an XOR gate and use a phase interpolator as the phase shifter. Embodiments with multiple data lanes apply coarse calibration to a shared clock lane relative to a first data lane, and similar fine calibration to other data lanes. Calibration provides optimum signal-to-noise ratio or timing margin, enabling high transmission speeds at relatively low power. Variations are disclosed.

The invention relates to the technical field of electronic circuits, in particular to a magnet coil power supply system, a control method and electronic equipment. The magnet coil power supply system comprises a subsystem and a control module. The subsystem comprises a plurality of sub-modules and a magnet coil sub-module; the plurality of sub-modules are arranged in an array in the form of M rows and N columns; the sub-module comprises a first capacitor and a driving module; the first capacitor is connected in parallel with the driving module; the control module is connected with the driving module; the control module is configured to generate M * N groups of driving pulse signals for the plurality of sub-modules by adopting a carrier phase-shifting modulation mode; for the ith row of sub-modules in the array, the corresponding driving pulse signals have the same phase offset relative to the driving pulse signals of the first row of sub-modules, and the offset of the phase offset is (i-1) / M carrier periods. The power supply voltage and the working current of the magnet coil can be greatly improved by arranging the plurality of sub-modules in an array, and current ripples can be reduced and the control efficiency can be improved by a phase shift control strategy.