431 results about "Magnetic disturbance" patented technology

The invention relates to the technical field of motor anomaly detection, in particular to a motor data anomaly detection method based on the Internet of Things. The method comprises the following steps: acquiring motor operation data, evaluating motor operation demand overload and load response conditions, and detecting bearing kinetic energy chain coupling recession and motor structure connection coordination decline trends, so as to determine dynamic magnetic field unbalance conditions in motor operation; based on the dynamic magnetic field unbalance condition, estimating the electromagnetic interference risk and the frequency oscillation growth trend of the motor, monitoring the error accumulation condition, and detecting the abnormal state of the motor; performing optimal configuration processing on motor operation parameters in combination with an abnormal detection result; according to the invention, the motor operation is more stable and efficient through the motor data anomaly detection.

The invention discloses a dual-electric brake boosting system, which belongs to the technical field of vehicle brake control and comprises the following steps: S1, dynamically calculating quadrature-axis inductance parameters, generating a synchronous magnetic field signal and inhibiting electromagnetic interference of dual motors; s2, extracting a harmonic-rotating speed mapping relation, and dynamically correcting an observation equation to control a parameter error; s3, reconstructing neutral point voltage to counteract high-frequency jitter, and reducing residual harmonic interference through adaptive filtering; s4, establishing a three-dimensional thermal field to predict copper and iron loss, dynamically adjusting current and generating an inverse time limit protection curve; s5, splitting the hot parameters into parity check frames, optimizing a communication protocol and compressing a refresh cycle to 10ms; s6, overlapping response of the white noise excitation system, and performing closed-loop calibration on the filtering weight to improve the observation precision; s7, triggering an audible and visual alarm and synthesizing a directional voiceprint and a tactile pulse to ensure safety regulations and perception intensity; the method has the beneficial effects that the method has remarkable advantages in a high-temperature and high-vibration severe environment, and the reliability and the safety of a system can be improved.

The invention discloses a single-end open type high-performance magnetic shielding system and a design method thereof. The system is formed by combining a passive magnetic shielding subsystem and an active magnetic compensation subsystem. The passive magnetic shielding subsystem is formed by alternately nesting single-end open type high-permeability and high-conductivity metal barrels, and the structure is beneficial to synchronously improving the shielding capability for full-band magnetic interference; the active magnetic compensation subsystem is composed of a group of axial nonlinear gradient coils, two groups of radial nonlinear gradient coils with orthogonal magnetic fields and a magnetic compensation control circuit, and three groups of magnetic compensation coil windings are obtained based on specific nonlinear distributed magnetic interference reverse design in a single-end open type magnetic shielding barrel; different from conventional shimming and linear gradient coils, accurate compensation of magnetic interference in a working area in the barrel can be realized. According to the invention, the shielding capability of the single-end open type magnetic shielding system is improved, and a required near-zero magnetic environment is provided for extremely weak magnetic measurement.

The invention provides a sea wave magnetic interference suppression method and device for ocean electromagnetic detection, and relates to the technical field of electromagnetic signal processing, and the method comprises the steps: synchronously collecting original electromagnetic signals through a plurality of annularly arranged magnetic sensors, generating interference parameters through employing the calculated interference signal amplitude and phase information, and carrying out the subsequent interference suppression processing. The method comprises the following steps of: calculating a covariance matrix, performing principal component analysis, extracting spatial characteristics of low-frequency magnetic interference, projecting a signal to an orthogonal subspace outside an interference subspace, removing a low-frequency magnetic interference component, retaining a target signal, performing Fourier transform to convert the signal to a frequency domain, analyzing a frequency spectrum by using a band elimination filter, and setting an interference threshold value. According to the identified interference frequency, an interference suppression signal is generated, the interference suppression signal is returned to the time domain through inverse Fourier transform and is superposed with the target signal to generate a standard electromagnetic signal, the magnetic interference in the ocean detection area can be effectively suppressed, and accurate acquisition and analysis of the standard electromagnetic signal are ensured.

The invention provides a global magnetic disturbance compensation method in aviation magnetic survey. The method comprises the following steps: S1, performing high-altitude calibration flight through a motion platform, and acquiring total magnetic field data based on detection data of an optical pump magnetometer; s2, obtaining geomagnetic background gradient information and obtaining geomagnetic field data based on the geomagnetic background gradient information; s3, obtaining motion platform magnetic interference data according to the total magnetic field data and the geomagnetic field data; s4, motion platform attitude information, motion platform current information and fluxgate magnetometer detection data are acquired; s5, obtaining a motion platform magnetic interference coefficient according to the motion platform magnetic interference data, the motion platform attitude information, the motion platform current information and the fluxgate magnetometer detection data; and S6, according to the geomagnetic background gradient information and the motion platform magnetic interference coefficient, performing data compensation on the total magnetic field data in real time during actual aviation magnetic measurement.

The invention relates to the technical field of power battery testing, in particular to a BMS function testing system and method for a new energy automobile. The method comprises the following steps: constructing battery pack structure model data according to battery pack CAD design drawing data; collecting vehicle working condition charging and discharging sample data; carrying out adaptive current excitation sequence processing according to the vehicle working condition charging and discharging sample data, and generating multi-working condition disturbance pulse excitation sequence data; performing disturbance magnetic field simulation on the battery pack structure model data through the multi-working-condition disturbance pulse excitation sequence data to obtain working condition test magnetic disturbance response data; and performing battery pack BMS monitoring data acquisition based on the working condition test magnetic disturbance response data, performing BMS current distribution monitoring performance evaluation, and generating BMS current monitoring performance evaluation data. By simulating current excitation and magnetic field response under multiple working conditions, comprehensive evaluation of the BMS performance is realized, and the test accuracy and efficiency are improved.

The invention relates to the technical field of electromagnetic valves, in particular to an intelligent control faucet and a faucet body, the faucet carries a control system, and the system comprises an environment interference suppression module, a gesture recognition processing module, an electromagnetic hysteresis compensation module, a multi-parameter coupling optimization module and a residual magnetism elimination control module. According to the method, the infrared compensation proportion is dynamically adjusted by fusing the environment light intensity and the hand position information, the interference suppression capability is improved, the recognition stability under complex illumination is enhanced, the action consistency is extracted in combination with the gesture track waveform and the dynamic response feature, and the recognition accuracy is improved; electromagnetic hysteresis is dynamically corrected based on real-time current and displacement deviation combined with a temperature factor, motion feedback precision is improved, multi-parameter coupling is fused with multi-physical field data to construct a stable control reference, system sensitivity is enhanced, a reverse pulse sequence is designed by capturing a current attenuation waveform, residual magnetism interference is effectively eliminated, and system performance is improved. And multi-dimensional improvement of identification precision, control stability and response efficiency is integrally realized.

The invention discloses an aviation magnetic survey compensation method and system for a fixed-wing aircraft, and the method comprises the steps: carrying out the calibration flight of the aircraft, and obtaining the related data of magnetic compensation in real time; secondly, based on magnetic compensation related data, an improved model based on a T-L model is established; and then magnetic compensation related data is applied to the improved model and then is processed, and a magnetic compensation coefficient is calculated by an improved truncated singular value method based on a crayfish optimization algorithm. And finally, separating the magnetic interference data by using the magnetic compensation coefficient to obtain normal magnetic induction data. According to the invention, the precision of the compensated magnetic field data is improved, and the environmental interference in the magnetic field data acquisition process is effectively removed.

The invention discloses a robot joint angle calibration method and system, and relates to the technical field of robotics.The calibration method comprises the specific steps that S100, sensors are installed and data are collected, specifically, the sensors are installed at all joints of a robot, real-time compensation of thermomagnetic interference is achieved through intelligent self-adaptive model adjustment, and the calibration accuracy is improved; the method effectively reduces the influence of environmental factors on the joint angle of the robot, not only considers the influence of temperature on the joint angle, but also takes magnetic field interference into consideration, and can accurately describe the joint angle error of the robot under different working conditions by constructing a coupling model of thermomagnetic coupling and joint angle error, thereby improving the accuracy of the joint angle error. A theoretical basis is provided for subsequent thermomagnetic compensation, and meanwhile, an intelligent adaptive model adjustment mechanism enables the method to continuously learn and optimize model parameters, so that the method continuously adapts to a new environment and new conditions in the operation process of the robot, and the accuracy and reliability of calibration are further improved.

The invention is suitable for the technical field of aeromagnetic data processing, and provides an aeromagnetic data compensation method and system for a multi-rotor unmanned aerial vehicle, and the method comprises the following steps: obtaining the aeromagnetic data of the multi-rotor unmanned aerial vehicle; the aeromagnetic data comprises three-component fluxgate data; determining total geomagnetic field data according to the three-component fluxgate data; according to the three-component fluxgate data and the total geomagnetic field data, calculating to obtain a direction cosine matrix; based on a preset PINN neural network, taking the direction cosine matrix and the total geomagnetic field data as input values, and outputting a magnetic interference prediction value; and compensating the aeromagnetic data according to the magnetic interference predicted value. According to the method, the PINN neural network is combined with physical information contained in the data, so that the fitting compensation capability is relatively high, meanwhile, the method does not need to depend on a large amount of data support, and the compensation precision of the aeromagnetic data is relatively high.

The invention relates to an anti-magnetic interference intelligent electric energy metering box, and relates to the technical field of electric energy metering boxes, the anti-magnetic interference intelligent electric energy metering box comprises a meter box main body and a shielding assembly, the shielding assembly comprises a shielding box for installing the meter box main body, and a shielding cover detachably installed at the front side of the shielding box; heat dissipation openings are formed in the middle parts of the left and right vertical side surfaces of the shielding box, wiring openings are formed in the lower parts of the left and right vertical side surfaces of the shielding box, and shielding nets are fixedly arranged on the inner walls of the heat dissipation openings; protection plates are rotationally connected to the edges, close to the back side, of the left and right side surfaces of the shielding box, and a plurality of fixing holes are formed in the protection plates; limiting plates are fixedly arranged on the top faces of the two protection plates in the horizontal direction, and a locking piece is arranged on the top face of the shielding box. During carrying, the protection plates are rotated to be in a protection state of being attached to the left side face and the right side face of the shielding box, at the moment, the protection plates can play a role in protecting the shielding nets at the heat dissipation openings, and the shielding performance of the electric meter box is guaranteed.

The invention discloses a dual-polarization multi-layer optical current sensor and a multi-physical field disturbance resisting method thereof, and belongs to the technical field of current sensors of power systems. The sensor comprises a dual-polarization multi-layer sensor system and a dual-polarization multi-layer optical current sensor real-time signal processing system which are connected with each other, the output end of a double-layer diamagnetic photoelectric sensing signal processing unit and the output end of a temperature-resistant signal photoelectric sensing signal processing unit in the real-time signal processing system of the dual-polarization multi-layer optical current sensor are connected to the input end of a dual-polarization multi-layer signal processing unit; and the output end of the dual-polarization multi-layer signal processing unit is connected to the multi-physical field anti-interference signal output unit. According to the invention, the resistance of the straight-through optical path type MOCT to ambient temperature field fluctuation can be effectively improved, and the influence of external magnetic interference at any position and the influence of ambient temperature fluctuation interference can be resisted.

The invention provides an indoor positioning method and system based on vision, geomagnetism and inertial navigation, and the method comprises the steps: obtaining inertial navigation data, and determining a local region where a target object is located in an indoor space according to the inertial navigation data; wherein the inertial navigation data is obtained by a positioning device carried by a target object; obtaining a visual image of the local area, and determining the position of the target object in a pre-constructed spatial model according to the visual image to obtain a first position; determining a target range according to the first position, and simulating an environment magnetic field around the target object under the condition that the magnetic disturbance object exists in the target range; real-time magnetic field data is obtained, the real-time magnetic field data is obtained through measurement of magnetic field measurement equipment carried by the target object, the real-time magnetic field data is matched with the environment magnetic field, the specific position of the target object in the local area is determined, and a second position is obtained. According to the invention, multiple positioning technologies are fused, and the indoor positioning accuracy can be further improved.

The invention discloses an electromagnetic interference suppression method and system for ultra-low field magnetic resonance imaging, and belongs to the technical field of nuclear magnetic resonance, and the system comprises an electromagnetic interference signal collection module which is composed of a plurality of EMI coils and corresponding signal collectors and actively detects EMI signals from the environment; the electromagnetic interference suppression module is used for performing model training by using the data, performing electromagnetic interference suppression through a model, predicting and eliminating an EMI component based on the electromagnetic interference suppression model, and outputting k space data without EMI; and the image reconstruction module is used for receiving the EMI-free k-space data and carrying out averaging and image reconstruction on the data so as to generate a high-quality MRI image. According to the invention, EMI noise is effectively suppressed, image quality is improved, and mobile and portable development of MRI equipment is promoted.

The invention belongs to the technical field of electromagnetic interference elimination, and discloses a method and system for processing electromagnetic leakage interference of an electromagnetic vibration table, and the method comprises the steps: starting a signal collection and analysis module, monitoring an electromagnetic signal generated in the operation process of the electromagnetic vibration table in real time, and recognizing an interference frequency range; a proper filter is selected or designed based on the identified frequency range through a filter selection and design module; a filter processing unit is utilized to install filters on necessary power lines and signal lines, and interference suppression measures are executed; the test and optimization module is operated, the filtering effect is evaluated, the configuration of the filter is adjusted according to needs, and the electromagnetic interference suppression effect is optimized; and the monitoring and adjusting module is continuously executed to adapt to the change of an experimental environment, so that long-term effective electromagnetic interference control is ensured. The invention provides a solution which is more accurate, effective and flexible compared with the traditional physical shielding, and is suitable for the occasion of carrying out high-precision vibration test on the magnetic sensitive sample.

The invention discloses a dynamic electromagnetic shielding method for a complex electromagnetic environment and a shielding device thereof, and the method comprises the steps: obtaining real-time voltage data in the complex electromagnetic environment, carrying out the voltage feature analysis, outputting a feature vector of a real-time voltage signal, and analyzing the type of an interference source of a current electric field according to the feature vector, performing interference trend time sequence prediction processing on the feature vector through a pre-trained LSTM model according to the interference source type to obtain a time domain voltage value and a phase deviation value, and performing composite loss coefficient calculation on the time domain voltage value and the phase deviation value to obtain a composite loss coefficient; and performing reverse offset signal synthesis processing on the voltage interference signal according to the calculated composite loss coefficient, performing coil dynamic activation processing on a preset multi-coil array according to the synthesized reverse offset signal, generating a directional offset magnetic field corresponding to the real-time electromagnetic interference, and performing electromagnetic offset shielding on the current electromagnetic interference. According to the invention, transient interference can be responded in time, and the electromagnetic shielding effectiveness can be improved.

The invention discloses a broadband oscillation characterization platform of a multi-chip power module and a near-field characteristic evaluation method, and belongs to the technical field of power electronics. The continuous operation condition of the power converter is decoupled into a series of discrete switching points, transient near-field radiation data of a to-be-tested power module under the discrete switching points are obtained through a double-pulse test, and near-magnetic field radiation signals are reconstructed; performing time-frequency analysis on the reconstructed near magnetic field radiation signal to generate a two-dimensional time-frequency matrix; and calculating a radiation energy entropy value based on the two-dimensional time-frequency matrix, fusing the radiation energy entropy value with the peak amplitude in the two-dimensional time-frequency matrix to generate a comprehensive EMI index for evaluating the broadband oscillation electromagnetic interference risk, and triggering EMI risk early warning when the comprehensive EMI index exceeds a threshold value. According to the method, the spectrum complexity is quantified through the radiation energy entropy, the multi-dimensional EMI risk assessment is carried out by fusing the peak amplitude of the time-frequency matrix, and the broadband oscillation in the multi-chip parallel power module can be accurately and efficiently represented.

The invention discloses an insulator-based voltage and current integrated intelligent sensing device and method.The insulator-based voltage and current integrated intelligent sensing device comprises a voltage sensing unit, a current sensing unit and an insulation fixing box, firstly, line voltage and current are detected on the basis that the insulation performance and mechanical strength of an insulator are kept sufficient; then, the voltage sensing unit realizes uniformization of an induced electric field, determination of a transfer function and relative minimization of partial discharge, and the voltage sensing unit is implanted into the insulator, so that the insulation performance of the voltage sensing unit is good; and finally, the current sensing unit improves the magnetic field measurement sensitivity by utilizing the magnetic gathering capability of the open type magnetic ring air gap and the optimization design of the magnetic ring structure parameters, and enhances the magnetic interference resistance by utilizing the optimization design of the magnetic ring structure parameters and the magnetic ring series.

The invention discloses a self-adaptive recognition method and system based on a four-bar linkage single station machine motion trail, and belongs to the technical field of motion trail recognition. The method comprises the following steps: acquiring a multi-source synchronous data stream, detecting a peak interference frequency, adjusting an adaptive notch filter in real time, obtaining a pure geomagnetic field signal, calculating the equivalent length of a connecting rod by using angle and force data, and establishing a kinematics equation to solve track coordinates; establishing a magnetic field space gradient tensor model through a magnetometer array, fitting a nonlinear mapping relation between an angle and a gradient tensor, and generating a metal magnetic interference compensation model; judging a motion mode and dynamically adjusting filter parameters; constructing a fast and slow dual-time scale filter to fuse multi-source information, and introducing a fading factor to prevent divergence; a future angle is predicted by using a long-short-term memory neural network to serve as a virtual observed quantity to enhance the fault-tolerant capability; and optimizing the reconstruction trajectory through multiple physical constraints. According to the method, the track identification precision, the anti-interference capability and the system robustness are remarkably improved.

A method for making axial magnetic field measurements in a downhole tool includes evaluating axial magnetic field measurements to determine a magnetic interference offset and removing the magnetic interference offset to obtain compensated axial magnetic field measurements.

The present invention discloses a stacked optical current sensor and an anti-external magnetic interference method thereof, which belong to the technical field of electric power sensors. The stacked optical current sensor includes: a sensor device and a stacked optical current sensor real-time signal processor. This optical current sensor includes a lower layer and an upper layer sub-sensor, whose sensing magneto-optical optical path structure is placed on the long side or short side of a symmetrical polygon, and the upper layer sub-sensor is placed after the rotation angle is taken as the center of the lower layer sub-sensor. The anti-external magnetic interference method is that the current conductor to be measured is placed at the center of the stacked optical current sensor, and the interference current conductor can be located at any point outside the stacked optical current sensor. At this time, the magnetic field integrals of the interference current on the sensing magneto-optical optical path structures of the upper and lower layers of sub-sensors show the characteristics of being mutually inverted. The signal processor performs superposition and cancellation processing on the signals obtained from the two layers of sub-sensors to eliminate the influence of the magnetic field of the interference current, and thus obtain a high-precision current measurement result.

The invention provides a method and system for diagnosing high-frequency magnetic disturbance in a quasi-ring symmetrical star simulator, and relates to the technical field of star simulators, and the method comprises the steps: designing the three-dimensional size of a magnetic probe body in combination with a physical research target and a vacuum chamber space limiting condition, and preparing a magnetic probe entity adaptive to an experimental environment; designing a magnetic probe array space layout according to the triangular magnetic configuration characteristics of the CFQS star simulator to obtain a positioned magnetic probe array; a positioned magnetic probe array is utilized to construct a signal transmission link, and a calibration qualification system is formed; generating a multi-channel time domain voltage signal set according to a calibration qualified system; and performing frequency response correction on the multi-channel time domain voltage signal set in combination with a transfer function database, analyzing a disturbance mode structure and a propagation direction through time-frequency spectrum analysis and array phase difference, and finally outputting three-dimensional magnetic disturbance evolution characteristics. The three-dimensional high-frequency magnetic disturbance measuring device has the beneficial effects that the three-dimensional high-frequency magnetic disturbance measuring capability is realized, multi-channel high-fidelity signal acquisition can be realized, and the experimental data quality and the physical analysis capability are improved.

The invention belongs to the technical field of data processing and analysis, and particularly relates to a geomagnetic and inertial navigation fused glasses guide direction identification and content triggering system, which comprises a sensing compensation component, a calculation storage component, a guide resource component and a display component, the sensing compensation assembly comprises an inertial measurement unit, a geomagnetic sensor, an active magnetic compensation coil and a coil driving module; the calculation storage assembly comprises a control processor and a memory, and the control processor is used for driving the active magnetic compensation coil to obtain a coil compensation geomagnetic vector according to a phase coding zero-returning sequence, executing attitude propagation based on the inertial measurement unit, and executing course updating on the coil compensation geomagnetic vector based on Huber anti-outlier loss to obtain a head attitude. According to the invention, the influence of magnetic disturbance and attitude jitter on direction identification and content triggering can be effectively reduced, and the stability, consistency and practicability of the glasses guide system in a real use scene are improved.

The invention relates to the technical field of current transformers, in particular to a current transformer for suppressing electromagnetic interference by adopting a high-frequency magnetic ring method. A housing; the number of the ports is two, and the two ports are fixedly connected and penetrate through the shell. The coil is fixedly connected to the interior of the shell; the number of the main magnetic rings is two, and the two main magnetic rings are fixedly connected to the interior of the shell and distributed on the two sides of the coil respectively; the fixing frame is fixedly connected to the interior of the shell, the fixing frame is in sliding connection with a plurality of sliding frames, each sliding frame is fixedly connected with two auxiliary magnetic rings, and the auxiliary magnetic rings are attached to the adjacent main magnetic rings; the stabilizing assembly is arranged in the shell; and the driving assembly is arranged in the shell. By changing the attaching position of the auxiliary magnetic ring and the main magnetic ring, the side, close to an external electric appliance element, of the main magnetic ring is superposed with the auxiliary magnetic ring, the resistance to an external interference magnetic field is improved, and the current detection precision of the device is improved.

The invention discloses a geomagnetic interference shielding device and a use method, the device comprises a shielding shell, a shielding end cover, a PLC controller, a vector magnetic sensor and a magnetic field compensation device, the shielding shell is a hollow cuboid with an opening at one side, the shielding end cover is connected to the opening of the shielding shell to form a closed anti-interference shielding box body, and the PLC controller is connected with the vector magnetic sensor. An electric device fixing device is arranged in the box body and is used for fixing an electric device and shielding external geomagnetic interference; the PLC, the vector magnetic sensor and the magnetic field compensation device are respectively arranged on the outer wall of the shielding shell; the output end of the vector magnetic sensor is connected with the PLC, the output end of the PLC is connected with the magnetic field compensation device, and the PLC is used for controlling the magnetic field compensation device to generate a magnetic field, so that the geomagnetic field is shielded. According to the invention, the detected geomagnetic field in the environment can be offset, and the geomagnetic field is shielded while the signal receiving of the electric device is not influenced, so that the influence of the geomagnetic field on the work of the electric device is avoided.

The invention relates to the technical field of intelligent illumination control, in particular to an illumination control system based on voice recognition and magnetic control, which comprises a voice trigger module, a magnetic disturbance path construction module, a behavior orientation recognition module, a voice and magnetic action joint recognition module and an illumination state control module. According to the invention, through frame segment division and sound wave feature extraction of the continuous audio stream, effective voice instructions can be accurately identified in a complex voice environment, and magnetic induction signals form a disturbance path map through magnetic flux direction mapping of a time sequence, so that careful tracking of space magnetic field changes is realized; according to the method, non-contact space operation has high direction sensitivity, the movement trend of a user in the space is effectively described aiming at angle change analysis of a magnetic flux disturbance path, the accuracy of behavior recognition is improved, the accuracy and safety of equipment operation are ensured on the premise that the space behavior intention of the user is met, and the user experience is improved. And the man-machine interaction efficiency and the use experience under multiple scenes are greatly improved.

The invention provides a motion platform magnetic compensation method based on a time-varying magnetic interference model, and the method comprises the steps: decomposing a magnetic interference compensation task into a development stage and a task stage, and obtaining an initial value of a magnetic compensation coefficient of a magnetic interference model through a conventional calibration mode in the development stage; in the task stage, the magnetic compensation coefficient of the magnetic interference model is decomposed into a time-varying coefficient and a time-invariant coefficient, high-altitude maneuvering does not need to be carried out through a traditional calibration mode, and rapid optimization of the magnetic compensation coefficient of the magnetic interference model is achieved on an air route flying to a task area through simple maneuvering flight in combination with a recursive algorithm. According to the method, the complexity of traditional calibration flight is reduced, the optimization speed of magnetic compensation coefficients of magnetic interference compensation in different task areas is improved, and the method has better adaptability to diversified scenes with limited cruising ability and high task instantaneity requirements.

The invention discloses an aeromagnetic compensation method based on multi-source error modeling and adaptive closed-loop optimization. The aeromagnetic compensation method comprises the following steps: synchronously acquiring multi-source sensor data; noise suppression and signal fusion are carried out by adopting adaptive Kalman filtering; performing temperature error compensation by using a dynamically estimated nonlinear temperature excursion model; adjusting and screening a core feature set through a dynamic weight; constructing an adaptive network with dynamic residual connection to carry out magnetic interference modeling; and finally, real-time reasoning is realized through high-precision quantification and calculation power optimization. According to the method, through multi-link collaborative design and closed-loop optimization, the noise suppression capability, the wide-temperature-range compensation precision and the system dynamic adaptability are remarkably improved, the problem that the performance of a traditional method is reduced in a complex state and an extreme environment is effectively solved, full-dimension suppression of multiple types of error sources is achieved, and the robustness of the system is improved. And the measurement reliability and the interpretation precision of aeromagnetic data are integrally improved.

A system and a method for controlling a power MOSFET for limiting electromagnetic interference from a load is provided. The system and method include a pulse-width-modulated (PWM) control voltage to operate the power MOSFET in accordance with its Ohmic region (linear mode). By operating the power MOSFET in its Ohmic region, the electromagnetic field generated by the load is reduced, without requiring a dedicated DC / DC converter that would otherwise increase the cost, size, and weight of the power electronics.

The invention provides a rotor unmanned aerial vehicle vector magnetic interference online compensation method and system, and belongs to the technical field of geomagnetic vector measurement. In order to solve the problems that a magnetic vector measurement value is influenced by magnetometer noise and attitude measurement noise at the same time, the precision of geomagnetic vector calculation is limited, and the magnetic compensation effect is limited; and the problem that model parameters are difficult to solve due to the fact that the maneuvering attitude of the rotor unmanned aerial vehicle is limited and multiple collinearity of measurement data is serious is solved. According to the method, the noise is quickly estimated through the adaptive exponentially weighted moving average noise covariance estimator in the recursion process, the noise covariance matrix of the recursion total least square method is adjusted in real time, the influence of the noise is reduced, the compensation precision under the influence of geomagnetic vector errors is improved, and the accuracy of geomagnetic vector error compensation is improved. And meanwhile, adaptive regularization is carried out on a covariance matrix in the recursion process of the recursion total least square method, so that the compensation parameter estimation precision under the influence of multiple collinearity is improved.