50 results about "Magnetic suspension system" patented technology

The invention discloses an anti-magnetic suspension accelerometer device based on a quasi-zero stiffness structure and a measurement method, and belongs to the field of precise instruments and meters. The device comprises a support, an axial displacement platform, magnetic conductive soft iron, an upper-layer pyrolytic graphite sheet, a lower-layer thin bismuth wafer, a capacitance displacement sensor and a permanent magnet array, wherein an anti-magnetic suspension system, a magnetic rigidity regulation and control system and a displacement detection system are arranged in the support; the anti-magnetic suspension system is composed of an upper-layer pyrolytic graphite sheet, a lower-layer thin bismuth wafer and a permanent magnet array, the magnetization directions of an inner ring and an outer ring of the permanent magnet array are opposite, a suspension element is suspended by virtue of anti-magnetic force and gravity balance, and quasi-zero stiffness is realized through positive and negative stiffness offset; according to the regulation and control mode, the magnetic field of the air gap where the suspension element is located is adjusted by adjusting the distance between the magnetic conductive soft iron and the permanent magnet, and the magnitude and gradient of magnetic induction intensity in all directions are changed, so that the magnetic rigidity is regulated and controlled, and efficient and accurate regulation and control of the sensitivity and the measuring range of the anti-magnetic suspension accelerometer are achieved. Therefore, the application range of the anti-magnetic suspension accelerometer is expanded.

The invention discloses a compensation parameter self-tuning vibration suppression method for a magnetic suspension bearing system, which belongs to the field of magnetic suspension bearing control, and comprises the following steps: S1, carrying out a pulse excitation experiment on a magnetic suspension bearing-rotor system by using an electromagnetic vibration exciter, a magnetic suspension bearing-rotor system model is obtained through parameter identification of the frequency response function; s2, obtaining a phase compensation angle according to the mapping relation of the frequency response function; and S3, according to the system model, designing a compensation controller based on a second-order generalized integral-synchronous rotating coordinate system, and through the system model, the phase compensation angle and stability criterion self-tuning compensation control parameters, realizing vibration suppression of the magnetic suspension system. The method can effectively suppress unbalanced mass vibration of the rotor, compensation parameters do not need to be tested and calibrated in advance, the self-tuning process is rapid and convenient, and the method is suitable for any multi-degree-of-freedom magnetic suspension bearing-rotor system and has good practical value and economic value.

The utility model discloses a Stirling heat engine teaching aid based on an auxiliary magnetic suspension system and a U-shaped liquid column, which comprises a support table, a glass U-shaped tube and a quartz tube, a high-frequency induction heater is arranged on the upper side of the support table, a heating induction coil of the high-frequency induction heater is sleeved on the quartz tube, the quartz tube is horizontally arranged, and the glass U-shaped tube is arranged on the quartz tube. A first sealing plug and a second sealing plug are respectively plugged at the two ends of the quartz tube, heat preservation steel wool is arranged at one section, close to the first sealing plug, of the interior of the quartz tube, and a heating iron ring is arranged in the center of the interior of the quartz tube and is positioned in a heating induction coil of the high-frequency induction heater. According to the utility model, through the design of the auxiliary magnetic suspension system and the U-shaped liquid column, the friction between the piston and the pipe wall is greatly reduced, the energy loss in the mechanical energy conversion process is effectively reduced, and the working principle of the Stirling heat engine and the application of the second law of thermodynamics can be intuitively displayed.

The application provides a UAV-InSAR-based magnetic suspension system multi-point collaborative reinforcement learning compensation control method, system, device and medium, the method comprises the following steps: using a UAV to carry a lightweight X-band interferometric synthetic aperture radar system to carry out high-precision surveying and mapping on a magnetic suspension line, and constructing an orbit irregularity power spectrum model; a hierarchical control system is constructed, the amplitude saturation controller in the lower layer generates a basic electromagnetic force control law according to the state quantity of the current suspension point; the upper layer compensation controller based on reinforcement learning is an agent, interacts with the environment composed of the suspension frame, the track and the amplitude saturation controller, trains by using the standardized irregularity function obtained from the track irregularity power spectrum model, and outputs the compensation control quantity for each suspension point; the basic electromagnetic force control law and the compensation control quantity are superimposed to generate the total electromagnetic force control law of each suspension point, and the suspension system is actively compensated and globally stably suspended. The application significantly improves the comprehensive control performance of the suspension system.

The invention discloses a control method and device of a magnetic suspension rotor, a magnetic suspension system, a storage medium and a computer program product. A position detection assembly used for detecting the radial position of the rotor and a temperature collection assembly used for collecting the surface temperature of the rotor are arranged. The method comprises the steps that in the rotor operation process, current radial position data, collected by a position detection assembly in real time, of a rotor and current temperature data, collected by a temperature collection assembly in real time, of the rotor are obtained; calculating the real-time position deviation of the rotor according to the current radial position data; judging whether the rotor has radial expansion or not according to the real-time position deviation; if it is determined that radial expansion exists in the rotor, the thermal expansion coefficient of the rotor is calculated according to the current temperature data and the real-time position deviation; and generating a control signal based on the real-time position deviation and the thermal expansion coefficient, and adjusting the radial stress state of the rotor according to the control signal so as to correct the suspension position of the rotor. According to the scheme, rapid dynamic compensation of the rotor is realized.

The application belongs to the technical field of garage door, and particularly relates to a magnetic suspension system for a high-speed low-noise garage door, which comprises a stand, a door curtain piece, a rotary motor-synchronous belt transmission mechanism, a modular magnetic suspension mechanism and a supporting wheel assembly; the inside of the stand is provided with a cross-shaped sliding groove; the magnetic suspension mechanism is composed of a door frame permanent magnet and a pair of first and second door curtain piece permanent magnets; a stable non-contact suspension gap is formed through reverse parallel closed magnetic circuit and bidirectional same-pole repulsion; the supporting wheel assembly is matched with the inner wall of the sliding groove to realize radial limiting and offset buffering; the application aims to solve the technical defects of the conventional lifting garage door, such as high noise, easy wear, running jam and offset caused by mechanical friction between the door curtain and the track, and the fact that the existing magnetic suspension door body cannot be compatible with the original rotary motor-synchronous belt transmission system, is difficult to be modularly added and stably suspended and guided.

The invention relates to the technical field of magnetic suspension motors, and discloses an ultralow-temperature magnetic suspension motor stator heat dissipation structure which comprises a magnetic suspension motor, the magnetic suspension motor comprises a motor base, the efficiency of phase change heat absorption is far higher than that of single-phase convection, a large amount of heat can be rapidly taken away, meanwhile, a cavity is distributed in a stator, and a heat conduction plate is combined. The heat conducting plate is made of an electric insulation composite material, so that heat generated by the winding is better conducted, close-fitting and three-dimensional cooling of the winding and the stator is realized, local hot spots are greatly eliminated, and a temperature field of the stator is very uniform; a cooling working medium is completely sealed in an independent cavity and a pipeline, the risk that the cooling working medium leaks into a motor air gap, a magnetic bearing or a winding is completely eradicated, a magnetic suspension system with extremely high requirements for cleanliness and stability is perfectly matched, a heat dissipation structure is integrated in the stator iron core, no extra space is occupied, and the compactness of the motor is kept.

The invention discloses a motor control method and device, a motor, a magnetic suspension system, a storage medium and a computer program product, and the method comprises the steps: determining the current value of the back electromotive force of the motor according to the current value of the stator current of the motor; determining the current value of the rotor temperature of the motor and the current value of the rotor deformation quantity of the motor according to the current value of the rotor material parameter of the motor and the current value of the back electromotive force of the motor based on the corresponding relation of the set rotor material parameter, the set back electromotive force, the set rotor temperature and the set rotor deformation quantity; and controlling the motor according to the current value of the rotor temperature of the motor and the current value of the rotor deformation quantity of the motor. According to the scheme, non-contact detection of the temperature and the thermal deformation quantity of the motor rotor is realized based on the back electromotive force of the motor, so that the position and temperature control of the motor rotor is realized, the thermal deformation quantity of the motor rotor caused by temperature rise is in a controllable range, and the motor efficiency is improved.

A control system for controlling a magnetic suspension system includes sensors configured to produce position signals indicative of a position of an object to be magnetically levitated, and a controller configured to control, in accordance with the position signals, electric currents supplied to magnetic actuators of the magnetic suspension system to magnetically levitate the object. The control system includes a computing system configured to maintain and update a computational model of the magnetic suspension system based on identification runs where identification run signals are supplied to the magnetic actuators of the magnetic suspension system and responses to the identification run signals are detected from the sensors and / or the magnetic actuators. The computing system is configured to compare quantities related to the computational model to quantities related to the magnetic suspension system to reveal deviations from the expected operational conditions of the magnetic suspension system.

The application discloses a full magnetic suspension system based on bidirectional active axial force of a rotor and a control method thereof. The full magnetic suspension system is provided with an axial force winding 3, and a magnetic field rotating synchronously with the rotor generated on the winding can generate stable axial forces in two directions of attraction and repulsion to compensate for axial hydraulic force. The size and direction of the active axial force generated on the rotor can be actively controlled through the current on the axial force winding 3. The active Maxwell force and the Lorentz force in the axial direction are active suspension forces, and together with passive magnetic resistance force, form a composite axial suspension force. The application can effectively improve the axial stiffness by increasing the active axial force. The control method provided by the application can make the axial force of the rotor have good dynamic response speed, and has better anti-interference ability compared with passive suspension. The active axial electromagnetic suspension system greatly improves the stability performance of the magnetic suspension pump in the axial direction.

The application discloses a high-throughput automatic multi-spectroscopy integrated experiment method, system and medium, and belongs to the technical field of automatic experiment and spectroscopy analysis. The method comprises the following steps: material warehouse-out and analysis driven by a general control system module, automatic preparation by a pretreatment device, transmission through a ground rail and a magnetic suspension system, automatic multi-spectroscopy parallel test, automatic recovery by a post-treatment device, and material warehouse-in and data closed loop. The experiment system integrates an automatic storage device, a multi-spectroscopy test workstation and a machine scientist interactive module, realizes full-process unmanned operation and data traceability, solves the problems of low efficiency, discrete process and incapability of cooperation with an AI system of existing spectroscopy experiments, significantly improves spectroscopy characterization efficiency, supports AI-driven intelligent research and development, and is suitable for material science, catalytic screening and chemical analysis scenes.

The invention relates to a coil current control device and method and a magnetic suspension system. The device comprises a current adjusting circuit which is used for adjusting the magnitude and the direction of current flowing through a coil to be controlled. And a sampling module. The voltage dividing module is connected with the coil to be controlled in series and connected between the midpoint of the first bridge arm and the midpoint of the second bridge arm in series, and the voltage drop of the two ends of the voltage dividing module is preset voltage; the control module is connected with the control end of the current adjusting circuit and the two ends of the sampling module and used for obtaining the sampling voltage of the two ends of the sampling module and controlling the working state of the current adjusting circuit according to the sampling voltage and the target current of the coil to be controlled so as to adjust the current of the coil to be controlled to the target current, the adjustable range of the current value on the coil to be controlled is related to the preset voltage. And the current on the coil can be conveniently and more accurately controlled.

The application discloses an energy feedback device and method of a magnetic suspension bearing system and a magnetic suspension system. The energy feedback device comprises a first energy feedback path composed of a motor, a controllable inverter module, a power module and a magnetic suspension bearing system connected in sequence, and a second energy feedback path composed of the motor, the controllable inverter module, a path switching module and the magnetic suspension bearing system connected in sequence. When the commercial power is abnormally cut off, the motor is idled to generate electric energy feedback, and the electric energy is transmitted to the magnetic suspension bearing system through the first energy feedback path according to a first energy feedback voltage; when it is monitored that the bearing voltage of the magnetic suspension bearing system is less than the stable working voltage thereof, the first energy feedback voltage is adjusted to be a second energy feedback voltage, and the magnetic suspension bearing system is supplied with energy through the second energy feedback path, so that the magnetic suspension bearing system continues to keep a working state, the working time is prolonged, and the rotor zero-speed drop is ensured.

The invention relates to the technical field of magnetic suspension systems, and particularly discloses a magnetic suspension rotor speed control system based on a neural network, which comprises an embedded controller, an instruction unit, a speed unit, an execution unit, a judgment unit and a control unit, the control unit adaptively adjusts PID parameters through a BP neural network, performs speed adjustment and updating in real time, then enters the execution unit for actual execution verification, judges whether to enter the speed unit again through the judgment unit, and performs a new round of execution verification and recursive execution until the judgment unit meets the requirements. The method is applied to the field of magnetic suspension rotor speed control, overcomes the defects that parameters in a conventional PID controller adopted in a control system of a magnetic suspension rotor are difficult to adjust, and the parameters are fixed and are difficult to face a complex time-varying system, automatically sets the parameters of the PID controller by adopting the self-learning capability of a BP neural network, adaptively adjusts the PID parameters, and improves the speed of the magnetic suspension rotor. And the robustness and reliability of the control system are improved.

A magnetic bearing system (100) includes a rotary shaft (101) and a magnetic bearing (105, 107, 130) having an electromagnet coil (106, 108, 108B, 135, 136). One end of the electromagnet coil (106, 108, 108B, 135, 136) is connected to the neutral point of a first multi-phase winding (113, 115, 123, 125, 173, 181) having at least three or more phases.

This invention discloses a fault monitoring method, apparatus, and device for a magnetic suspension system. In this solution, fault monitoring of the magnetic suspension system can be achieved by calculating the fault assessment value of each pair of suspension electromagnets under each fault condition and comparing it with the fault threshold. Furthermore, the target parameter vector used in calculating the fault assessment value is a parameter vector that satisfies the constraint condition of the lowest fault missed detection rate, thereby enabling this solution to more accurately detect faulty suspension electromagnets and ensure the safety of the magnetic suspension system.

The utility model relates to the technical field of magnetic suspension equipment power supply protection, in particular to an uninterruptible protection power supply system for magnetic suspension equipment, which comprises a power supply module with an input end connected with an alternating current mains supply end; the input end of the first AC / DC module is connected with the output end of the power supply module, the output end of the first AC / DC module is connected with the magnetic suspension system, and the first AC / DC module is used for converting alternating current into direct current to supply power to the magnetic suspension system; the input end of the charging and discharging assembly is connected with the output end of the power supply module or the output end of the first AC / DC module, the output end of the charging and discharging assembly is connected with the magnetic suspension system, and the charging and discharging assembly is used for charging by using the direct current supplied by the power supply module and providing the direct current to the magnetic suspension system after the alternating current mains supply loses power. According to the utility model, under the condition that the external commercial power suddenly loses power, the charging and discharging assembly can still supply power to the magnetic suspension system, and the process that the direct current of the battery pack is inverted and then rectified in a UPS + AC / DC scheme is omitted, so that the power generation efficiency is improved, the battery capacity can be reduced, the conversion rate is improved, and the system cost is reduced.

The application provides a low-vacuum pipeline magnetic suspension system superconducting linear motor stator module heat dissipation method, which comprises the following steps: monitoring the temperature rise of the stator winding, lifting the vacuum degree in the vacuum pipeline to a certain extent when the temperature rise of the winding exceeds the early warning temperature, closing the re-pressurizing valve when the air pressure reaches the preset value, spraying the cooling water of the preset temperature on the surface of the stator module and the bottom series cable by the pipeline spraying system, restoring the air pressure in the vacuum pipeline to the normal low-vacuum state after the spraying is completed, ensuring that the cooling water can completely boil and phase change to absorb heat, monitoring the temperature drop amplitude of the stator module in single heat dissipation, and repeating the above cycle if the stator winding in the whole heat dissipation interval is not completely reduced to the preset temperature after single heat dissipation. The technical scheme of the application solves the technical problems of high cost, many joints, low reliability, large eddy current, high magnetic resistance and inability to directly dissipate heat for the cable caused by the continuous laying of the water-cooled plate in the prior art.

The invention relates to the technical field of magnetic suspension, and discloses a rotor angle decoupling bearingless magnetic suspension motor which comprises a stator and a rotor, and an air gap is arranged between the stator and the rotor. A plurality of stator teeth are arranged on the stator, composite windings are fixed on the stator teeth, a plurality of split teeth are arranged on the stator teeth, in-groove permanent magnets are embedded in stator grooves of the stator, and stator yoke permanent magnets are embedded in yoke parts of the stator. The problem of magnetic saturation of a stator permanent magnet bearingless motor is effectively reduced, the compromise requirement of torque and suspension force in a winding design scheme is eliminated by adopting the composite winding, meanwhile, rotor angle decoupling suspension control is realized, and comprehensive optimization of key performances such as electromagnetic performance, winding utilization rate and reliability of a bearingless magnetic suspension system is realized.

The invention relates to an electric pump, in particular to a magnetic suspension electric pump with a magnetic bearing for a hot filling machine. The water pump comprises a driving assembly, the driving assembly comprises an impeller seat, a shell and the impeller seat are designed in a separated mode, a water cover is connected to the upper side of the impeller seat in a clamped mode, and connecting assemblies used for fixing the shell, the impeller seat and the water cover are arranged on the upper side of the impeller seat in a bilateral symmetry mode. The impeller seat is inserted into the shell and attached to the inner wall of the shell, shell deformation caused by thermal stress or pressure in the equipment operation process is decoupled from the impeller seat and internal parts to a certain degree through the impeller seat designed in a separated mode, the influence of external deformation on the core suspension gap precision is reduced, and the core suspension gap precision is improved. The stable control of the magnetic suspension system is maintained, and the operation reliability of equipment is improved.

The invention discloses a controllable magnetic suspension electric aircraft. The aircraft comprises a magnetic suspension driving system, an efficient brushless direct current motor system, a solid-state battery energy system, a carbon fiber machine body structure, a three-axis gyroscope stabilizing system and a closed-loop control module. The magnetic suspension driving system provides vertical lift force and attitude control; the efficient brushless direct current motor system provides horizontal propulsion power; the solid-state battery supplies power to the whole system; the carbon fiber machine body serves as a bearing structure; the three-axis gyroscope detects the flight attitude in real time; and the closed-loop control module receives the attitude information and synchronously controls the magnetic suspension system and the motor system. Main lift force is achieved through magnetic suspension, electric propulsion is combined, the problems that a traditional rotor aircraft is high in energy consumption, large in noise, poor in wind resistance and short in endurance are solved, and efficient, quiet, stable and long-endurance vertical take-off and landing and flight are achieved.

The invention discloses a multi-marshalling middle train suspension gap optimization method, a medium and equipment, and belongs to the field of magnetic suspension system control. The method comprises the following steps: acquiring related operation data when a maglev train passes through a track beam section, and determining design theoretical elevation data of a track beam stator surface, wherein the related operation data comprises an actually measured suspension gap sequence between a middle train suspension electromagnet and the track beam stator surface, and real-time speed and position information of the train; the rigidity state of the track beam is judged according to the related operation data, and a reference height line for stable operation of the train is constructed according to the different rigidity states; establishing a multi-objective optimization model by taking a gap safety limit value and an operation stability index as constraint conditions to perform self-adaptive correction on the reference height line to obtain an optimized reference height line; and generating a target gap sequence based on the optimized datum line height, wherein the target gap sequence is used for adjusting suspension controller parameters of the middle train in real time. According to the invention, the safety and stability of train operation are improved.

The application discloses a kind of control method, device, magnetic suspension system and storage medium of power amplifier, the method includes: the current of the main circuit of electromagnetic bearing power amplifier detected by bus current detection module is recorded as the bus current of direct-current power supply;The current of the corresponding bearing coil of electromagnetic bearing detected by the coil current detection module at each bearing coil of electromagnetic bearing is recorded as the coil current of each bearing coil of electromagnetic bearing;According to the bus current of direct-current power supply and the coil current of each bearing coil of electromagnetic bearing, the fault diagnosis of electromagnetic bearing power amplifier, n coil current detection modules and bus current detection module is carried out.The scheme, by the fault diagnosis of power amplifier according to bus current and coil current, the fault condition of power amplifier can be determined in time, and it is favorable to improve the reliability of magnetic suspension motor control system.

The application relates to a magnetic suspension vibration suppression and quick-change rotor type rotary viscometer and relates to the technical field of rotary viscometers, which comprises a bottom plate and a rotor, the output end of the motor is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with an anti-vibration pipe, the outer wall of the anti-vibration pipe is fixedly connected with a first magnet at the upper end, the inner bottom end of the rotary viscometer body is fixedly connected with a second magnet, the bottom end of the rotating shaft is fixedly connected with an electromagnetic lock, and the upper end of the rotor is fixedly connected with a connecting head. The application has the advantages that the first magnet and the second magnet are arranged, a positive magnetic suspension system is formed according to the same-polarity repulsion principle of the magnets, the rotating shaft is separated from mechanical contact with the rotary viscometer body, the frictional resistance and vibration transmission of traditional ball bearings are eliminated, the electromagnetic lock and the connecting head are arranged, the connecting head of the rotor is electromagnetically adsorbed, and the effect of quick locking and releasing of the rotor is achieved.

The utility model discloses an equipment for the feeding and discharging of battery cell based on 6D magnetic suspension system, which comprises a magnetic suspension transmission mechanism, a feeding mechanism, at least one processing mechanism and a discharging mechanism. The equipment realizes the non-contact displacement of the battery cell through the magnetic suspension transmission mechanism, ensures the high-precision positioning and reduces the risk of mechanical damage. The equipment not only improves the positioning accuracy of the battery cell transmission, but also avoids the mechanical damage during the transmission and reduces the maintenance requirements.

The utility model discloses a kind of protection bearing assembly, magnetic suspension system and compressor, wherein, protection bearing assembly is used for compressor and is sleeved in rotor shaft outside, it includes first protection mechanism, first protection mechanism includes first protection bearing, first fixed part, first damping part and second damping part, the inner ring of first fixed part has the first accommodating cavity compatible with first protection bearing, along the radial direction of first protection bearing, first accommodating cavity is opened with first damping groove on the side surface of first protection bearing, first damping part is set in first damping groove. Along the axial direction of first protection bearing, two second damping parts are located on the opposite sides of first protection bearing respectively. The protection bearing assembly of the utility model, by setting first damping part and two second damping parts, first protection bearing can be buffered along the axial direction and radial direction of first protection bearing, help to solve the problem that the impact force that present protection bearing is instantaneously sustained is too large after rotor shaft falls.

The invention relates to a method for flexibly replacing a rotor of a magnetic suspension system. The method mainly comprises the following steps: S100, moving a rotor to an edge stator, and arranging a specific port for adding or removing the rotor at the edge stator, and S200, controlling the edge stator to be powered off, and removing the rotor from the specific port to the outer side of the edge stator. The method is favorable for reducing the adverse effect of replacing the rotor on the production efficiency. According to the method, only part of line bodies of the upper rotor and the lower rotor are required to be powered off, that is, only the edge stator is powered off, and other parts are kept working normally, so that other rotors can continue to carry out conveying work, and the influence on the production efficiency is reduced to the minimum.

The invention discloses a magnetic suspension line body speed cooperative control method and system based on load sensing, and relates to the field of control, and the method comprises the steps: triggering a dynamic suspension force adjustment mechanism, and dynamically adjusting the suspension force; triggering a propulsive force-suspension force cooperative adjustment mechanism, and synchronously adjusting the propulsive current and the suspension current; identifying current fluctuation, and dynamically correcting current distribution to suppress a magnetic field interference effect; and fast Fourier transform frequency analysis is carried out in real time, and the bandwidth and gain of the controller are dynamically adjusted. The invention provides a magnetic suspension line body speed cooperative control method based on load sensing, and the core lies in multi-dimensional parameter monitoring and hierarchical cooperative regulation and control, and achieves the timely and accurate adjustment of the suspension force. The stability problem caused by load fluctuation is effectively solved, meanwhile, the accuracy of speed cooperative control is improved, and the operation safety of the magnetic suspension system is greatly improved.

Lower magnetic conductive plates are arranged on the left side and the right side of the bottom of the train along the two sides of a rail head of an I-shaped steel rail, suspension permanent magnets are fixedly arranged on the upper portions of the left lower magnetic conductive plate and the right lower magnetic conductive plate, and the I-shaped steel rail, the upper magnetic conductive plate and the lower magnetic conductive plate arranged on the two sides and the suspension permanent magnets between the I-shaped steel rail and the upper magnetic conductive plate and the lower magnetic conductive plate form a permanent magnetic suspension system. Horizontal guide wheels are arranged on one side or the left side and the right side of the I-shaped steel rail, rotating motors are arranged inside or outside the guide wheels, and when a train runs on the I-shaped steel rail in a suspension mode, the rotating motors drive the horizontal guide wheels and the I-shaped steel rail to generate adhesive force to pull the train to run. The device can run on the I-shaped steel rail of the existing high-speed rail at a high speed, so that the existing high-speed rail line is quickly accelerated and upgraded into a high-speed magnetic levitation line.

The invention provides an optimal control method and an optimal control device for a magnetic suspension bearing, and aims to solve the problems of current fluctuation and vibration energy transmission caused by same-frequency vibration in a magnetic suspension bearing system. The LMS self-adaptive filter is introduced to perform real-time extraction and dynamic suppression on the same-frequency vibration component in the feedback path of the PID controller, so that the same-frequency interference component in the output signal of the controller is effectively weakened, the output control current does not contain redundant response to the same-frequency vibration any more, the amplitude fluctuation of the coil current is remarkably reduced, and the control precision is improved. The whole scheme has the advantages of being easy to implement, free of an additional sensor, capable of adjusting the filtering effect in real time and the like, the stability and control precision of a magnetic suspension system can be improved, and the method is suitable for high-precision and high-dynamic-performance magnetic suspension motors or high-speed rotor application scenes.