459 results about "Rotor angle" patented technology

The invention belongs to the technical field of motor control, and relates to a permanent magnet synchronous motor sensorless control method, system and hardware circuit, angular velocity estimation is designed based on a q-axis current model under a two-phase rotating coordinate system, angular velocity estimation compensation is designed based on a d-axis current model, and a rotating speed correction coefficient is introduced. And dynamic compensation of the estimated angular velocity value is realized. An accurate angular velocity estimated value and an accurate rotor angle estimated value are obtained by constructing a Romberg observer with an angular velocity estimated value and a rotor angle estimated value as outputs based on a dq rotating coordinate system. Taking an angular velocity error obtained by a motor angular velocity given value and a motor angular velocity estimated value as input of an outer ring PI controller, so as to ensure that the angular velocity estimated value tracks the motor angular velocity given value and output a q-axis current reference value; taking the difference value between the q-axis current reference value and the q-axis current sampling value and the difference value between the d-axis current reference value and the d-axis current sampling value as the input of an inner ring PI controller so as to ensure the bandwidth and the influence capability on the load, and outputting a d-axis voltage reference value and a q-axis voltage reference value; and converting the d-axis voltage reference value and the q-axis voltage reference value into voltage reference values under a two-phase static coordinate system based on the rotor angle estimation value so as to divide SVPWM drive circuit sectors, select voltage vectors, calculate action time, control on and off time of a permanent magnet synchronous motor switching device, and control on-off time of the permanent magnet synchronous motor switching device. And the alternating current speed regulation performance of the permanent magnet synchronous motor without the position sensor under the Romberg observer method is ensured.

According to the permanent magnet synchronous motor sensorless flux linkage estimation method based on the non-linear observer, the stator flux linkage can be accurately estimated by applying the non-linear expansion state observer and the effective flux linkage method in the sensorless mode of the motor. By applying a voltage and current hybrid model, adaptive switching of a voltage model and a current model is realized, and the problems of direct current bias, integral saturation and the like existing in first-order integral of the voltage model are solved; and estimating and compensating noise and disturbance existing in the voltage model by applying a non-linear extended state observer, accurately obtaining a stator flux linkage during operation of the motor, and finally estimating a rotor angle and a rotating speed by using a phase-locked loop. According to the method, the estimated values of the rotor angle and the rotating speed are more accurate, and the sensorless control performance of the permanent magnet synchronous motor is improved.

The invention relates to the technical field of industrial automation control, and discloses a water-based paint production and processing equipment control system, which comprises the following steps: acquiring stator current and rotor angular velocity, and reconstructing total load torque by using a sliding mode algorithm; extracting an input power low-frequency component to construct a heat dissipation slow manifold, and calculating a thermal drift disturbance component and an orthogonal residual component through orthogonal projection; on the basis of a two-component generation superposition instruction closed-loop adjustment driving mechanism, a double-time-scale orthogonal projection mechanism is utilized, non-structural thermal drift interference is automatically stripped under the condition that heat transfer parameters of equipment do not need to be predicted, the problem of control divergence caused by model parameter mismatch is solved, and decoupling control over the real rheological state of materials is achieved.

The invention discloses a motor and a control method and device thereof, a storage medium and a computer program product, and the method comprises the steps: enabling the actual q-axis current of the motor to be equal to the given q-axis current of the motor, employing a preset current-frequency starting mode, and controlling the open-loop starting of the motor in a speed loop; determining target switching time, switching point q-axis current and a target rotor angle of the motor according to the target torque, the set rotor angular speed and the actual rotor angle of the motor; and in combination with the given q-axis current of the motor, the switching point q-axis current, the target switching time, the actual rotor angle and the target rotor angle, adopting a preset sectional gentle reduction control strategy to control the given q-axis current of the motor to be reduced to the switching point q-axis current of the motor in a sectional manner, and switching from an open loop to a closed loop to realize stable starting of the motor. According to the scheme, the q-axis current is reduced in a three-section gentle slope mode, speed open-loop starting gentle slope smooth switching to closed-loop control is achieved, and the motor is started stably.

The invention relates to the technical field of motor current limiting, and discloses a cooling fan motor starting current limiting method, device and equipment, and the method comprises the steps: carrying out the starting power calculation of a radiator, and obtaining a drive power prediction value; rotor angle position detection and blade aerodynamic resistance calculation are carried out, and aerodynamic load distribution parameters of all phase change points are obtained; performing starting current limitation to obtain a current limitation control instruction; performing motor commutation time sequence control to obtain a basic commutation control signal, and meanwhile, monitoring a starting torque abnormal increment to obtain a reverse airflow recognition result; according to the method, the current limit value is increased in the emergency mode to accelerate the starting response, the current limit is reduced in the energy-saving mode to reduce the energy consumption, and the starting current phase difference compensation is carried out to obtain a reverse airflow compensation control parameter and fuse the reverse airflow compensation control parameter with the basic phase-change control signal to obtain a target phase-change control signal. And the intelligent balance between the starting performance and the energy efficiency is realized.

The invention relates to the technical field of motor control, in particular to a harmonic gear motor based on double encoders and a control method thereof, which comprises the following steps: processing linear Hall element signals output by a rotor shaft encoder, including high-frequency noise suppression, direct-current bias calibration, amplitude normalization and phase difference calibration, to obtain accurate orthogonal signals; a double-dq rotating coordinate system phase-locked loop algorithm is adopted, the calibrated orthogonal signals are processed, and the high-precision real-time angle of the motor rotor is obtained through calculation; based on a signal of an output shaft encoder, matching with a preset angle partition of the harmonic reducer, and identifying an absolute position sector where the current output shaft is located; the rotor angle and the sector angle of the output shaft are fused to generate a high-resolution absolute angle of the output shaft; and based on the fused angle information, a magnetic field orientation control algorithm is adopted to drive a motor, and closed-loop control is achieved.

The utility model discloses an automobile eddy current dual-redundancy Hall sensor and a working method thereof in the field of automobile rotor angle detection and hovercar paddle position detection, and the sensor comprises a housing which is annular, the housing is provided with a mounting cavity, the mounting cavity is internally provided with an annular circuit board, the circuit board is connected with a wiring harness assembly, and the wiring harness assembly is connected with the housing. A sealing glue layer is arranged above the circuit board in the shell mounting cavity, the lower side of the shell is provided with a downward extending cylinder which extends downwards, a Hall sensor is arranged in the downward extending cylinder, and the Hall sensor is correspondingly connected with the circuit board. According to the utility model, through the dual-redundancy design, the eddy current sensor can reach ASIC-D at most; the Hall sensor is integrated into the circuit, so that the space occupied by the arrangement of the two sensors can be effectively reduced, and the weight is reduced.

The invention relates to the technical field of reluctance motor intelligent control, and discloses a switch reluctance motor intelligent control system and method, and the system comprises a collection module which is used for collecting the inductance, flux linkage and winding current of a magnetic circuit, and a data processing module which is used for processing the collected data, calculating the angular position of a rotor, and outputting an electromagnetic torque. The system comprises a switch reluctance motor, a torque monitoring unit used for monitoring electromagnetic torque of the switch reluctance motor, a control module used for controlling operation of the motor, a fault monitoring module used for monitoring abnormal conditions, and an energy recovery module used for recovering energy generated during braking of the motor. Parameters such as motor torque and angle can be dynamically adjusted according to the motor operation state, and the operation efficiency and response speed of the motor are improved.

The invention relates to a permanent magnet synchronous motor technology, in particular to a permanent magnet synchronous motor vector control method and system based on a current source type inverter. Constructing a self-adaptive harmonic elimination method model, defining a reference signal, obtaining a weight matrix of the reference signal at the current moment based on a given angular velocity and a tracking error of the angular velocity of the rotor of the permanent magnet synchronous motor at the current moment, a self-adaptive gain constant and the reference signal at the current moment; and respectively calculating the error compensation information of the d-axis current and voltage and the q-axis current and voltage at the current moment, and correcting the d-axis current and voltage and the q-axis current and voltage at the current moment based on the error compensation information of the d-axis current and voltage and the q-axis current and voltage at the current moment. Through a novel error correction method, current and voltage compensation measurement errors are corrected, so that the rotation pulsation of the motor is eliminated, and the three-phase current is symmetrically balanced.

The invention relates to a non-inductive FOC open-loop to closed-loop switching method and device for an electronic water pump and a vehicle. The method comprises the steps that a rotor is pre-positioned; starting an open loop I-F; switching condition judgment; estimating the rotor speed based on an observer, calculating a normalization factor, and obtaining a mixed scale factor through cubic polynomial operation; acquiring an open-loop current instruction of a q axis and a closed-loop current instruction output by a closed-loop speed PI regulator; performing weighted synthesis on the two paths of current instructions according to the mixing scale factor to obtain a temporary target current instruction, and applying a change rate limit to obtain a final current instruction output in the current period; the original angle error of the observer estimation angle and the open-loop slope angle is calculated and normalized, the allowable adjustment step length and direction of the round are dynamically determined, and the angle correction amount of the round is generated and superposed to the open-loop slope angle to update the rotor angle reference value; and closed-loop switching is completed. According to the invention, the problems of electromagnetic torque impact and rotating speed fluctuation caused by instruction step change are solved.

The invention discloses a VSG control method based on parameter self-adaption and hybrid energy storage SOC adjustment. From the perspective of improving power grid frequency fluctuation under new energy grid connection, important factors such as an action mechanism of a virtual rotor angular frequency variation and a change rate, influence of rotational inertia and a damping coefficient on VSG power frequency response output characteristics, SOC balance adjustment of hybrid energy storage and the like are comprehensively considered; according to the method, the adaptive control of VSG parameters and the coordinated control of the hybrid energy storage SOC are realized, so that the purposes of reducing the response time and overshoot of VSG power frequency output, reducing the decrease amplitude of the SOC of the energy storage system and reducing the frequency fluctuation of a power grid in a transient process are achieved. Compared with a traditional VSG control method, the dynamic response capability of the VSG can be effectively enhanced, the service life of an energy storage system is prolonged, the transient stability of a power grid is improved, and the method has important guiding significance and engineering application value for design and optimization of a VSG controller.

The invention discloses an electric power system transient stability state and stability margin evaluation method, device and equipment based on Grapher multitask learning and a medium, and relates to the technical field of electric power, and the method comprises the steps: carrying out the standardization of node features corresponding to a bus and edge features related to a power transmission line and a transformer branch, and obtaining standardized features; determining a dichotomy label based on a power angle difference between the generators after a fault occurs, determining a regression label based on a difference between a generator rotor angle trajectory and an inertia center trajectory, and determining a target Grapher multi-task learning model by using the standardized features, the dichotomy label, the regression label and an initial Grapher multi-task learning model in combination with a multi-task loss function; and determining a transient stability state and a transient stability margin of the power system based on the real-time operation data and by using the target Grapher multi-task learning model. Therefore, the accuracy of transient stability evaluation is improved.

The invention discloses a motor rotor state observation method and observer, and a motor rotor angle estimation system, and the observation method comprises the steps: obtaining a state parameter based on a current rotor state item and state parameter operation, and obtaining a voltage parameter based on a real-time sampling voltage and voltage parameter operation; integrating the current extension item, the state parameter item and the voltage parameter item to obtain an updated rotor state item, and updating the current rotor state item based on the updated rotor state item; and obtaining a current parameter item based on the real-time sampling current and the current parameter operation, integrating the current parameter item and the updated rotor state item to obtain an initial extension item, performing gain and amplitude limiting on the initial extension item based on the gain constant and the amplitude limiting parameter to obtain an updated extension item, and updating the current extension item based on the updated extension item. According to the invention, hardware acceleration in a rotor state acquisition process is realized, and the area of an electric control chip is reduced on the whole; and the dependence on high system frequency is also reduced, so that the operation power consumption of the system is reduced on the whole.

Embodiments of the present disclosure relate to a method, device and medium for reducing noise of a motor, the motor being a permanent magnet synchronous motor based on vector control, the method comprising performing interruptions on the motor at a first frequency and a second frequency, respectively, based on a predetermined timing sequence; when the interruption is executed on the second frequency, performing filtering processing on a vector control PWM duty ratio signal of the motor by using a multi-order weighted sliding mean filter so as to filter out a high-frequency harmonic component; performing compensation of the target phase compensation amount on the rotor angle of the motor when the interruption is performed on the first frequency; and performing space vector modulation on the interrupted output of the vector control PWM duty cycle signal of the motor, thereby obtaining the PWM duty cycle signal for reducing the noise of the motor.

The invention discloses a rotary transformer angle resolving method based on successive approximation of a difference angle formula, and relates to the technical field of motor control, and the method comprises the steps: calculating the maximum change angle of the rotor angle of a rotary transformer in each decoding period based on the maximum operation speed of a rotating mechanism; setting a comparison angle, and setting the value of the comparison angle to be 0; acquiring a sine value and a cosine value corresponding to a current rotor angle of the rotary transformer, calculating a sine value and a cosine value corresponding to a comparison angle, and substituting the sine value and the cosine value into a difference angle formula for calculation; and calculating by adopting a successive approximation method to obtain the current rotor angle of the rotary transformer. According to the method, the comparison angle is set, the sine and cosine values are calculated and substituted into the difference angle formula, the result is calculated, and the current rotor angle of the rotary transformer is calculated by adopting the successive approximation method, so that the angle calculation of the rotary transformer is more accurate, and the problems of poor noise immunity and large static fluctuation of a software decoding scheme are avoided.

The invention provides a ship propulsion motor sensorless control algorithm based on harmonic suppression, and the algorithm comprises the steps: introducing a compensation coefficient through the analysis of fifth and seventh harmonics, constructing a novel PIR controller, and suppressing the formulated frequency harmonics; the external disturbance of the system is regarded as a system expansion state, a novel observer is constructed by combining cascade ESO and PLL to estimate the position of a motor rotor, it is guaranteed that the system accurately compensates for the deviation angle in a dynamic state and a static state, and the performance of the position-sensorless driving system is improved. According to the invention, a compensation coefficient is introduced, a novel PIR controller is constructed, and control links for five-frequency multiplication and seven-frequency multiplication are added, so that the effects of suppressing PMSM phase current harmonics and reducing the total harmonic content of phase current are achieved. And then external disturbance of the system is regarded as a system expansion state, and the rotor angle of the motor is estimated by combining cascade ESO and PLL. Therefore, the system can accurately compensate the deviation angle in a steady state and a dynamic state, and the performance of the position-sensorless driving system is improved.

The present invention relates to the technical field of intelligent control of reluctance motors, and discloses an intelligent control system and method for a switched reluctance motor, comprising an acquisition module for acquiring the inductance, magnetic flux and winding current of a magnetic circuit, a data processing module for processing the acquired data and calculating the rotor angular position and outputting the electromagnetic torque, a torque monitoring unit for monitoring the electromagnetic torque of the switched reluctance motor, a control module for controlling the operation of the motor, a fault monitoring module for monitoring abnormal conditions, and an energy recovery module for recovering energy generated during motor braking. The intelligent control system and method integrate control strategies and algorithms, and can dynamically adjust parameters such as motor torque and angle according to the operating status of the motor, thereby improving the operating efficiency and response speed of the motor.

The invention relates to the technical field of stepping drive motor control, and discloses a stepping drive motor resonance control method and system for a high-precision scene, and the method comprises the steps: collecting motor operation data through a multi-dimensional detector array, and inputting a dynamic response model to obtain dynamic response features; extracting a current harmonic frequency spectrum key point as a resonance event mark point, aligning and matching a rotor angular displacement and winding temperature data fluctuation interval, and generating a mechanical response association pair; performing resonance event association and space-time positioning by using the association pair, and determining abnormal response distribution; and generating a self-adaptive suppression strategy based on the association pair and the abnormal distribution and triggering an execution device. The system comprises a multi-dimensional detector array, a dynamic response processing module, an event association analysis unit, an abnormal distribution modeling unit and a strategy execution unit. According to the invention, multi-physics field data fusion analysis and resonance precise control are realized, the method is suitable for high-precision scenes, and the motor operation stability and reliability are improved.

The invention relates to the field of motor control, in particular to a fault-tolerant control method, electronic equipment for implementing the method and a computer readable storage medium. The method comprises the following steps of determining a voltage vector controllable range which can be used for controlling the stator voltage of the motor according to the type of a short-circuit bridge arm in response to a detected single-bridge-arm short-circuit fault of an inverter used for driving the alternating current motor; converting the voltage vector controllable range into a corresponding rotor angle controllable range; when the motor rotor angle is out of the rotor angle controllable range, controlling the AC motor to enter an active short-circuit state; and when the rotor angle of the motor is in the rotor angle controllable range, controlling the alternating current motor to output target torque by using current closed-loop control and discontinuous pulse width modulation, so that the average torque output by the alternating current motor in one electric period reaches an expected value.

The invention discloses a hybrid excitation synchronous motor control method and system, and belongs to the technical field of motor control. The problem that a motor control system can operate at high precision when a position sensor breaks down is mainly solved. The method comprises the following steps that when a position sensor breaks down, a system is switched to an active short circuit protection (ASC) mode, and operation of a motor is controlled by giving instruction values of d-axis current and q-axis current in the mode; then, in an ASC mode, estimating a rotor angle through a voltage equation in a static coordinate system, so as to obtain an electrical angle of a rotor; after the rotor angle estimation is completed, the system is switched from the ASC mode to the vector control mode without the position sensor, and the d-axis voltage and the q-axis voltage are adjusted in the mode, so that the motor can be continuously and accurately controlled and stably run. The invention provides an efficient and safe motor control method, and the safety and reliability of the electric vehicle under the condition of sensor fault are effectively improved.

The invention belongs to the technical field of laser remanufacturing and high-end equipment repairing, and particularly discloses a steam turbine rotor R angle laser cladding repairing process which is used for conducting segmented multi-layer laser cladding on a steam turbine rotor R angle to ensure that the laser cladding thickness reaches the steam turbine rotor R angle repairing thickness and has machining allowance. The thickness of each layer of laser cladding is 0.7 mm-0. 9 mm, and ultrasonic impact stress relief treatment is carried out after each section of laser cladding is completed. And PT nondestructive flaw detection, phased array ultrasonic detection, hardness detection and residual stress detection are fused to ensure the repair quality. The rotor is suitable for 530 DEG C high-temperature and high-pressure working conditions, the cost is greatly reduced compared with rotor replacement, and the rotor has remarkable industrial application value.

It is described a method of detecting a fault regarding determination of rotor angle position of a permanent magnet synchronous machine (111) having at least one multi-phase stator winding set, during low rotational speed operation, the method comprising: checking consistency (1) of at least two independent rotor angle position determination methods thereby using at least an encoder based method and a high frequency injection based method; indicating a fault (13, 14) if at least one consistency check fails.

A device 30 for controlling fluid flow in a flexible tube 10 comprises two rotatable bobbins 22, 32, a motor 56, an encoder 64 and a processor 202 (Figure 8). Each bobbin comprises a tube-engaging surface portion having a shape that changes around at least part of a circumference of the bobbin. The motor comprises a rotor 62 (Figure 4) mechanically coupled to the bobbins such that operation of the motor causes rotation of the bobbins. The encoder is mechanically coupled to the rotor and configured to measure an angular displacement of the rotor. The processor determines a target angular displacement of the rotor, receives a measurement signal indicative of the angular displacement of the rotor from the encoder, and outputs a motor control signal to set the angular displacement of the rotor as measured by the encoder to the target angular displacement.

The invention relates to an electromagnetic transient modeling and simulation method of a permanent magnet synchronous generator, which can reflect various types of internal faults, and the method comprises the following steps: 1, according to different fault types, establishing mathematical models of the permanent magnet synchronous generator in different fault states, and according to the different fault types, establishing a mathematical model of the permanent magnet synchronous generator in the different fault states, according to the different fault types, establishing a mathematical model of the permanent magnet synchronous generator in the different fault states, and according to the mathematical model, establishing a mathematical model of the permanent magnet synchronous generator in the different fault states, and according to the mathematical model, establishing a mathematical model of the permanent magnet synchronous generator in the different fault states, and establishing a mathematical model of the permanent magnet synchronous generator in the different fault states; 2, focusing matrix elements required to be updated according to fault characteristics, and selecting current or flux linkage as a state variable; 3, performing discretization equivalence on the mathematical equation of the permanent magnet synchronous generator by using a backward Euler integral method, integrating two state variables, unifying the model to obtain an equivalent circuit equation, and constructing an equivalent circuit of the permanent magnet synchronous generator; 4, the equivalent circuit of the permanent magnet synchronous generator is connected with an external electrical network, and the equivalent model carries out node admittance matrix iteration solution on the whole circuit based on an EMTDC solver; and updating other concerned electrical information such as the stator current, the rotor current, the electromagnetic torque, the rotating speed, the rotor angle and the like until the simulation is finished.

A hybrid electric vehicle and a vibration control method thereof is provided. The vibration control method of the hybrid electric vehicle includes: receiving rotor angle information of a motor generated based on information detected by a resolver; receiving first engine rotation-angle information of an engine generated based on information detected by a cam angle sensor or a crank angle sensor; generating engine rotation-angle candidates based on the rotor angle information; and identifying a second engine rotation-angle based on the engine rotation-angle candidates and the first engine rotation-angle information.

A method of determining rotor angle limits for static heating of an electric motor comprises: applying a brake to a wheel of a vehicle, wherein the vehicle has an electric motor; while the brake is applied, providing a first current to the electric motor to generate first torque not exceeding a brake torque limit of the brake; while the brake is applied, providing a second current to the electric motor to generate second torque, the second current being opposite, and about equal, to the first current; determining a first rotor rotation angle associated with the first current, and a second rotor rotation angle associated with the second current; and setting the first and second rotor rotation angles as first and second rotor angle limits, respectively, for static heating of the electric motor.

The invention relates to a method and an electronic device for the indirect field-oriented control (FOC) of a brushless DC motor (1) using digital Hall sensors (3a-3c) for detecting the instantaneous rotor position of the DC motor (1) for the purpose of torque control, wherein an electrical revolution of the rotor (2) by a plurality (n) of digital Hall sensors (3a-3c) arranged equidistantly to one another in relation to the rotor circumference is divided into twice (2n) as many sectors, wherein each sector corresponds to a defined Hall pattern and a change in the Hall signal is interpreted as an exceeding of the limit of a sector caused by the rotation of the rotor (2) in order to apply an incrementally constant rotor angle (α) for determining the instantaneous rotor position for the field-oriented control.

The invention discloses a multi-domain fusion motor torque zero-crossing compensation control system and method, and the method comprises the steps: obtaining a motor rotor angle according to a motor rotation position signal, and calculating an actual motor rotation speed; calculating an equivalent motor rotating speed according to the wheel speed signal; according to the driving mode, the accelerator pedal change rate, the driving habit information and the road information, calculating a dynamic threshold value of an absolute value of a difference value between the actual motor rotation speed and the equivalent motor rotation speed; judging whether the reduction gearbox backlash is closed or not; judging whether the driving demand torque reaches a calibration value or not according to the accelerator pedal opening degree; calculating a target motor torque according to the opening degree of an accelerator pedal, judging whether the wheel speed is greater than a set value or not according to a wheel speed signal, judging whether feedforward torque compensation is needed or not according to judgment results of whether a reduction gearbox backlash is closed or not and whether a driving demand torque reaches a calibration value or not, and if so, calculating a feedforward compensation torque and superposing the feedforward compensation torque with the target motor torque; and if not, outputting the target motor torque as the motor torque instruction.

The invention relates to a rotor angle confirmation method and device, a vehicle and equipment, and relates to the technical field of vehicles. The method comprises the following steps: acquiring sine and cosine signals output by a motor position sensor; the sine and cosine signals are associated with angle information of the motor rotor; calculating a compensation value of direct current bias deviation and a compensation value of amplitude deviation based on the first sine and cosine signal; the first sine and cosine signal is a sine and cosine signal acquired in a first time interval; the first time interval at least comprises a first period; performing phase compensation on the second sine and cosine signal, and determining the angle of the motor rotor according to the sine and cosine signal after phase compensation; wherein the second sine and cosine signal is a compensated sine and cosine signal obtained in a second time interval; the second sine and cosine signal is obtained by performing compensation based on the compensation value of the direct current bias deviation and the compensation value of the amplitude deviation; the second time interval at least comprises a second period. Therefore, there is a deviation between the calculated rotor angle and the actual rotor angle.

The invention discloses a dynamic balance adjusting device and method for a magnetic suspension fan rotor, and relates to the technical field of self-adaptive adjustment. The method comprises the steps of collecting a suspension bearing displacement signal, a magnetic suspension coil current signal, a machine body vibration acceleration signal, a motor end electromagnetic response signal and a rotor angular displacement parameter, and constructing a rotor operation signal set; performing preprocessing and feature extraction on each signal to obtain four types of feature data; inputting the comprehensive characteristic data into a rotor balance diagnosis model to identify the unbalance state of the rotor; based on an amplitude phase inversion algorithm, solving a virtual counterweight amplitude and a phase adjustment amount, and injecting into a suspension coil to execute adjustment; judging whether dynamic correction is needed or not according to the real-time comprehensive characteristic data, and if yes, generating a dynamic gain coefficient to correct the adjustment parameters and then injecting the adjustment parameters into the suspension coil again; according to the invention, real-time identification and self-adaptive adjustment are carried out on the mass unbalance vibration of the magnetic suspension fan rotor, the operation vibration of the rotor is effectively inhibited, and the balance stability and reliability of the system are improved.