727 results about "Maglev" patented technology

The invention provides a state monitoring and fault early warning method for a maglev vehicle system, relates to the technical field of urban rail transit data processing, and solves the problem of how to effectively combine an empirical threshold mode and a machine learning technology and give full play to a combination effect. The method comprises the steps of collecting operation data of a magnetic levitation vehicle system, performing corresponding data preprocessing operation, performing analysis and calculation in a mode of constructing a mathematical model, and evaluating the health state of the magnetic levitation vehicle system; constructing and training a fault prediction model, and inputting the evaluation data into the trained fault prediction model to obtain potential fault data of the magnetic levitation vehicle system; and generating early warning information based on the potential fault data, retrieving an expert experience library by using the early warning information, generating an intelligent decision result, and feeding back the intelligent decision result to the operation and maintenance personnel. According to the method, machine learning and expert experience are effectively combined, so that the real-time performance and the accuracy of fault early warning are improved.

The invention provides a high-speed magnetic levitation suspension system control method and system based on edge calculation and Transform prediction, and the method comprises the steps: constructing a Transform prediction model with a space-time attention mechanism and an autoregression mechanism based on obtained local low-delay calculation resources and train real-time sensing data, and deploying the Transform prediction model in a vehicle-mounted edge calculation unit; performing short-term high-precision prediction on the gap, the acceleration and the disturbance trend at a plurality of sampling moments in the future through a Transform prediction model to obtain a prediction result; processing actuator current saturation and gap safety threshold hard constraints in a limited prediction domain by using a model prediction controller, and solving an optimization control sequence in real time in combination with a prediction result; and overlapping a control barrier function as a safety filter of the model prediction controller, correcting the optimized control sequence to obtain an optimal control sequence, and controlling the high-speed magnetic suspension system. According to the method, the cloud communication delay and jitter are reduced, and the robustness and security of the system under uncertain disturbance are improved.

The invention relates to the technical field of train cooperative control, in particular to a train cooperative control method based on a speed curve interval optimization setting strategy, and the method comprises the steps: building a train simple substance point dynamic feature model; according to the train simple substance point dynamic characteristic model, a train dynamic model is obtained and discretized; according to the discretized train dynamics model, optimizing a train tracking operation curve interval to obtain a train reference speed optimal interval; according to the train reference speed optimal interval, a leading train interval objective function and a following train interval objective function are established and optimized, and the optimal control acceleration is obtained to control the train. According to the maglev train operation curve interval optimization method provided by the invention, a continuous and limited optimal speed reference is provided for multi-train cooperation, and a layered cooperative control strategy is provided by adopting a set optimal speed interval, so that efficient, energy-saving and comfortable cooperative tracking operation of multiple maglev trains is realized.

The invention provides a maglev traffic track structure and a construction method thereof. The maglev traffic track structure comprises a bridge deck, a maglev track assembly and an induction plate assembly. The magnetic levitation rail assembly comprises a magnetic levitation rail, a hexagon nut, a gasket, a thin nut and a screw. The induction plate assembly comprises an iron core, an aluminum plate, shear nails and screws. The iron core is vertically welded and fixedly connected with the shear nails, the shear nails and the bridge deck are cast and anchored into a whole, the iron core is arranged on the upper end face of the bridge deck, and the aluminum plate is installed on the upper end face of the iron core through screws; the construction method comprises the steps that the prefabricated bridge deck slab is modularly poured in a factory, the magnetic levitation rail is installed, adjusted and locked in the factory, the levelness and straightness of the magnetic levitation rail are measured again, and the bridge deck slab is installed on a construction site. According to the invention, high-precision, high-efficiency and low-cost installation of the maglev traffic track is realized.

The invention discloses a guide constraint control method for a maglev high-speed rail under network attacks, and belongs to the field of rail transit. The method adopts a dynamic air gap constraint and boundary layer sectional type continuous adjustment technology to perform anti-network attack control on the maglev high-speed rail guide system: establishing a dynamic mathematical model and a lateral centrifugal force model of the maglev high-speed rail guide system, and further obtaining a state-space equation and a centrifugal force suppression control rate of the maglev high-speed rail guide system; constructing a satellite navigation network attack model of the maglev high-speed rail track and driving information; converting a state-space equation of the magnetic levitation high-speed rail guiding system into a control equation of the magnetic levitation high-speed rail guiding system containing wind shear disturbance and guiding force mismatch matching interference; dynamic constraint control is adopted, a guiding controller is designed, and guiding constraint control over the magnetic levitation high-speed rail under network attacks is achieved. While the starting stability of the maglev high-speed rail is improved, mismatch of the guiding force is rapidly compensated, and stable operation of the maglev high-speed rail is guaranteed.

The invention discloses a suspension control fault detection and recovery method and device for a maglev train and a medium, and relates to the field of maglev trains, and the method comprises the following steps: S1, constructing a linearized suspension system model; s2, reconstructing a state vector, and generating a suspension gap estimation value; s3, constructing a health probe set, and executing a signal selection strategy; s4, detecting a slow change fault based on the statistical accumulation characteristic of the residual error, and outputting a slow change fault detection result; s5, monitoring the variation trend of the residual error, and triggering a reset mechanism to clear historical accumulated data when a reset condition is met; and S6, generating a final fault mark, and forcibly updating the fault mark to a normal state if a reset mechanism is triggered. According to the hierarchical collaborative decision-making architecture based on the maglev train lap joint structure dynamic model, the condition of performance degradation or failure does not occur in a real system by the algorithm, so that the engineering applicability and reliability of fault diagnosis are improved.

The invention provides a maglev traffic track connecting structure, a maglev traffic track and a construction method of the maglev traffic track. The connecting structure comprises a penetrating type sleeve, a long bolt, an elastic cushion set and a fastening assembly. The penetrating type sleeve penetrates in the thickness direction of the concrete cover plate. The long bolt sequentially penetrates through the track, the penetrating type sleeve and the induction iron core. The elastic pad set comprises a first elastic pad arranged between the top end of the penetrating type sleeve and the induction iron core and a second elastic pad arranged between the bottom end of the penetrating type sleeve and the track. The fastening assembly comprises a nut in threaded fit with the end of the long bolt, and the rail and the induction iron core are fixed to the upper side and the lower side of the concrete cover plate by screwing the nut. The connecting structure is simple and reliable, good in stress condition and convenient to operate and maintain. On one hand, the track is tightly attached to the bottom end face of the concrete cover plate, the stress condition of the long bolts is good, and shear failure is not prone to occurring. And on the other hand, on the basis of realizing adjustable precision, the replacement difficulty and cost of the induction iron core and the track are relatively low.

The invention discloses a probability density evolution analysis method, medium and equipment for a maglev train suspension system, and belongs to the technical field of suspension control. The method comprises the following steps: acquiring a probability density true value of a target quantity of the suspension system; performing supervised training on a target quantity probability density output value of the physical information neural network based on the probability density truth value to obtain a trained basic physical information neural network model; forming a correction matrix by using a set of target quantity output values, correcting a target quantity probability density value output by the trained basic physical information neural network model until an expected error is met, and obtaining a target quantity probability density physical information neural network based on residual enhancement; and predicting probability density evolution of a future time target quantity by using the target quantity probability density physical information neural network based on residual enhancement. The method effectively improves the calculation efficiency on the premise of ensuring the target quantity probability density calculation precision, and can be used for target quantity probability density evolution prediction.

The invention discloses a confidence embedded model predictive control method, a medium and equipment, and belongs to the technical field of suspension control. According to the method, a kinetic equation of a suspension system is established, a data-mechanism dual-drive uncertainty quantification method is adopted, original operation data of a maglev train and suspension state information measured on line are utilized, and dynamic characteristic learning modeling is conducted on the suspension system under the constraint of the kinetic equation; state quantity distribution of suspension air gaps, vertical speed, electromagnet current and the like at future moments is predicted, and prediction mean values and prediction standard deviations of corresponding states are obtained. In model prediction control optimization, a nominal trajectory of the suspension system is constructed by a predicted state mean value, and a penalty term proportional to prediction uncertainty is added into a cost function; meanwhile, confidence coefficient constraint is constructed based on the predicted standard deviation, and dynamic constraint tightening of key physical quantities such as suspension air gaps, vertical speed and coil current is achieved. According to the invention, real-time sensing and self-adaptive closed-loop control of the operation risk of the suspension system are realized.

The invention discloses a superconducting magnetic levitation U-shaped track beam and a preparation method thereof, and belongs to the technical field of bridge engineering.The superconducting magnetic levitation U-shaped track beam is used for running of a magnetic levitation train with superconducting coils arranged on the two sides of a train body, and the track beam comprises a plurality of track beam sections which are sequentially spliced in the longitudinal direction; each track beam section comprises a main beam body and two side plates arranged on the two transverse sides of the main beam body respectively, the two side plates and the main beam body are integrally formed to form a U-shaped beam body structure, a maglev train can run in the U-shaped beam body, mounting grooves are formed in the inner side wall faces of the two side plates and used for mounting ground coils, and the invention further provides a preparation method of the superconducting maglev U-shaped track beam. The superconducting magnetic levitation U-shaped track beam is formed by splicing the multiple track beam sections, the main beam body and the two side plates in the track beam sections are integrally formed, the number of joints of the track beam is greatly reduced, the smooth performance of the track beam is guaranteed, and the overall stability of a magnetic levitation track system is improved.

The invention provides a wheel rail-permanent magnet electric fusion type maglev rail traffic system, which relates to the field of rail traffic and is characterized in that guide rails are arranged on sleepers, a frame moves along the guide rails, guide wheels are mounted at the bottom of the frame and are in contact with the guide rails, and the frame is guided to advance or retreat along a preset direction through the contact between the guide wheels and the guide rails. The stator is arranged on the side of the guide rail, and the rotor is arranged on the frame and parallel to the stator axis. When the stator is electrified, an alternating magnetic field can be generated, and the mover is subjected to the action of electromagnetic force under the action of the magnetic field, so that the frame is pushed to move along the guide rail, and the operation of the rail transit system is realized.

The invention discloses a suspension system sensor fault detection algorithm, which comprises the following steps: establishing a suspension system model according to the motion of a real part of a suspension system; designing a state observer based on the suspension system model; acquiring and processing a sensor signal to obtain a residual value; and comparing the residual value with a threshold value to obtain fault information of the suspension system sensor. According to the fault detection method based on the algorithm, the change of the system state can be sensed earlier, and an early warning signal is sent out at the initial stage of sensor fault occurrence. The magnetic levitation system is widely applied to scenes of rail transit, air transportation, medical care and the like, the algorithm provides guarantee for normal operation of the system, meanwhile, maintenance personnel provide sufficient time for checking and repairing a fault sensor, further deterioration of faults is effectively prevented, safe and stable operation of the scenes where the magnetic levitation system is applied is ensured, and the service life of the magnetic levitation system is prolonged. And the safety and the reliability are improved.

The invention discloses a method and a device for measuring the service life of magnetic poles in a normal-conducting high-speed magnetic levitation electromagnet, and relates to the field of magnetic levitation trains. And the service life evaluation coefficient is calculated by combining the initial magnetic pole parameters, so that the working condition of the suspension electromagnet can be evaluated more comprehensively and accurately, and the phenomenon of missed judgment caused by small damage area of an insulating layer is effectively avoided. The service life of the suspension electromagnet can be accurately evaluated, an operator can reasonably arrange maintenance and replacement plans of the suspension electromagnet by calculating the service life evaluation coefficient, maintenance or part replacement can be carried out at a proper time, excessive loss or sudden failure of the suspension electromagnet is avoided, the service life of the suspension electromagnet is prolonged, and the service life of the suspension electromagnet is prolonged. And the reliability and economical efficiency of the suspension electromagnet are improved.

The invention provides a truss type steel structure magnetic levitation track panel, a track and a manufacturing method. The track panel is of a steel bolting modular truss track structure and is provided with at least three sleepers which are transversely distributed at intervals in parallel at equal intervals; the bottoms of the two ends of the sleeper are longitudinally bolted with n-shaped rails respectively; induction plate iron cores and skid rails are longitudinally mounted at the tops of the two ends of the sleepers respectively; a plurality of supporting pieces are longitudinally and uniformly distributed between adjacent sleepers, and the top ends of the supporting pieces are bolted with induction plate iron cores and skid rails; the induction plate iron core is modularly and detachably provided with a driving surface induction plate, and the skid rail is modularly and detachably provided with a skid plate; two magnetic pole faces are integrated at the bottom of the n-shaped rail, and a detection face is arranged between the magnetic pole faces. The device is stable and reliable in structure, convenient to maintain, excellent in adaptability, 100% in-plant prefabrication rate, reduced in installation linear control difficulty, improved in construction efficiency, reduced in maintenance cost and replacement cost, and suitable for popularization.

The invention provides a maglev train bottom bolt looseness identification method based on deep learning. The method comprises the following steps: acquiring a bottom image of a maglev train by adopting imaging equipment, and carrying out bolt target detection on an image in a bottom image data set through an improved YOLOv8 network to obtain a bolt image; performing classification processing on the bolt image through a lightweight network RepViT fused with a lightweight ViT design principle; color space conversion, image binaryzation, morphological processing and connected domain screening processing are carried out on the bolt image to extract an anti-loosening line, and whether the vehicle bottom bolt in the bolt image is loosened or not is judged based on the bolt anti-loosening line according to loosening characteristics of different types of bolts under multiple visual angles. According to the method, the detection precision is improved by means of improving a target detection network structure, refining bolt loosening characteristics, providing adaptive detection methods for different types of bolts and the like; by designing a lightweight classification network mode, the calculation amount and time consumption are reduced, and the detection efficiency is improved.

The present application discloses a maglev air compressor, which includes a compressor housing, a motor stator, a rotor, a first impeller assembly and a second impeller assembly subjectable to an axial magnetic force and a control module. The compressor housing, the motor stator and the rotor are sleeved sequentially, both ends of the rotor are rotatably connected to an inside of the compressor housing through a maglev bearing group, the first impeller assembly and the second impeller assembly are fixedly oppositely installed on the both ends of the rotor. The maglev bearing group includes: a first thrust bearing piece generating a first axial magnetic force to the first impeller assembly, and, a second thrust bearing piece generating a second axial magnetic force to the second impeller assembly.

The invention discloses a correlation analysis-based magnetic suspension rotor system on-line time-lag identification method, which comprises the following steps of: generating a sine excitation signal through an excitation signal generator to excite a magnetic suspension rotor system, collecting a control voltage and a displacement signal, and introducing the control voltage and the displacement signal into a cross-correlation time-lag identifier to carry out time-lag identification. The time-delay identifier is composed of a band-pass filter, a conversion transfer function, a data storage module and a cross-correlation time-delay identification operation module. Voltage and displacement signals which are introduced into the cross-correlation time-lag identifier are firstly filtered through a band-pass filter and then converted into homologous signals through a conversion transfer function, then data storage and iteration are carried out by utilizing a data storage module, and finally the required time-lag amount is identified by utilizing a cross-correlation operation module. According to the method, the advantage that the magnetic suspension rotor system is active and controllable is utilized, extra testing equipment does not need to be used, the structure is simple, few computing resources are occupied, time delay information in the system can be obtained online, and time delay identification of the magnetic suspension rotor system is achieved.

The invention relates to the technical field of high-speed maglev traffic, in particular to an ultrahigh-speed low-vacuum pipeline dust removal device. The technical problem to be solved by the invention is that the resistance is increased and the vacuum degree of the pipeline is reduced due to dust accumulation in the ultra-high-speed low-vacuum pipeline. Comprising a vacuum pipeline and a cleaning mechanism, the cleaning mechanism comprises prefabricated frames, the prefabricated frames are symmetrically and fixedly connected to the inner wall of the vacuum pipeline, sliding boxes are slidably connected into the prefabricated frames, and first compression springs are arranged between the sliding boxes and the inner walls of the prefabricated frames. Through the design of the cleaning mechanism, dust removal is conducted on the vacuum pipeline, the situation that dust exists in the vacuum pipeline, consequently, the dust occupies the space in the pipeline, the flowing resistance of gas or fluid is increased, and the vacuum degree of the vacuum pipeline is prevented from being reduced is avoided; and through the design of a scraping plate, dust falling into the first U-shaped frame is scraped away, the dust is prevented from being accumulated in the first U-shaped frame, and the dust in the sealed space can be purged through a purging pipe.

The invention provides a beam end large-displacement stretching and retracting and rail temperature adjusting integrated device of a maglev traffic bridge. The beam end large-displacement stretching and retracting and rail temperature adjusting integrated device comprises a first fixed F rail section, a second fixed F rail section, an F rail length adjusting section and a steel sleeper distance adjusting device. The second fixed F rail section and the F rail length adjusting section are sequentially connected to the second beam body, the first fixed F rail section is arranged on the first beam body and extends to the second beam body across the beam seam to be connected with the F rail length adjusting section, and the F rail length adjusting section can adjust the length. The steel sleeper distance adjusting device is arranged at a beam seam between the first beam body and the second beam body and located below the first fixed F rail section, the steel sleeper distance adjusting device comprises a plurality of sliding steel sleepers arranged at intervals in the longitudinal bridge direction, and the sliding steel sleepers are in sliding connection with the first fixed F rail section above the sliding steel sleepers. And the distance between the adjacent sliding steel sleepers can be adjusted along with the change of the beam seam. The problem of telescopic displacement of the F rail and the steel sleeper caused by large displacement of the beam body is solved, and the system is simpler and more stable.

The invention relates to the technical field of power utilization monitoring, and discloses a power utilization safety monitoring device based on a magnetic suspension power distribution technology, and the device comprises a current detection system which obtains the working state information of a current transformer and a Hall effect sensor through a data collection module; the data analysis module performs normalization processing on the frequency, the current, the direct current component, the environmental magnetic field intensity, the power supply voltage and the aging drift amount; the reliability analysis module calculates the reliability of the two types of sensors based on the normalized index; the weight endowing module dynamically distributes sensor weights in combination with the temperature influence factors; and the current summary calculation module outputs the final detection current through weighted fusion. The problem that a single sensor is easily influenced by frequency deviation, direct current component, temperature drift and magnetic field interference under complex working conditions is solved, high-precision and high-reliability self-adaptive current monitoring is realized, and the safety monitoring capability of a magnetic levitation power distribution system is remarkably improved.

The utility model relates to a direct-current excitation cable special for a high-speed maglev train. The direct-current excitation cable is characterized by being sequentially provided with a wire, a polyester wrapping tape, an insulating layer, a shielding braid layer and an outer sheath from inside to outside, compared with the conventional bunch stranding and total stranding process, the layered concentric stranding process adopted by the lead has the advantages that the pay-off tension of all conductors is uniform, conductor core breakage is avoided, the stable function of the cable is ensured from the performance, the braiding density of the shielding braided layer is not less than 95%, and a strong electromagnetic field can be effectively prevented from escaping to cause greater damage to passengers; the low-smoke halogen-free polyolefin irradiation elastomer material is selected as the outer sheath and the insulating material, and the material does not contain halogen, does not release toxic gas during combustion and has good mechanical property and flame retardant property, and the cable is simple in structural design, has the characteristics of large current, strong short-time overload capacity and the like, and is small in bending radius and high in reliability. The cable has the advantages of vibration resistance, oil resistance, environmental protection and good high-voltage direct-current stability.

The invention discloses a maglev engineering vehicle, which relates to the technical field of maglev vehicles, and comprises a first suspension frame unit, a second suspension frame unit and a third suspension frame unit, fixed sliding tables are arranged between the first suspension frame unit and the second suspension frame unit and between the first suspension frame unit and the third suspension frame unit, and the fixed sliding tables are fixed to a vehicle body; the transverse stabilizing mechanism comprises a first hydraulic cylinder and a second hydraulic cylinder, when the transverse stabilizing mechanism passes through a bent road section, the first hydraulic cylinder and the second hydraulic cylinder are disconnected to relieve transverse constraint, and the second suspension frame unit and the movable sliding table on the corresponding side of the second suspension frame unit as well as the third suspension frame unit and the movable sliding table on the corresponding side of the third suspension frame unit can rotate around the rotating center of the fixed sliding table on the corresponding side. When passing through a straight road section, the first hydraulic cylinder communicates with the second hydraulic cylinder to achieve transverse constraint, and the rigidity between the vehicle body and the suspension frame unit is guaranteed. According to the maglev engineering vehicle, the curve passing capacity and the curve passing balance stability of the maglev engineering vehicle can be improved.

The present invention discloses a semi - prefabricated high - speed maglev track beam and its assembly method, which includes a propulsion groove and a suspension groove. It also includes a bottom plate extending along the track direction, and two rows of concrete precast elements assembled on the bottom plate and mirror - distributed axially along the bottom plate. A propulsion groove is formed between the two rows of concrete precast elements, and suspension grooves are provided on the concrete precast elements; along the axial direction of the bottom plate, adjacent two concrete precast elements are spliced with each other; three rows of inspection holes are opened on the bottom plate, and each row of inspection holes extends along the axial direction of the bottom plate; two of the three rows of inspection holes are respectively located below the two rows of concrete precast elements, and the other row of inspection holes is located at the bottom of the propulsion groove; channels which are directly opposite and communicated with the corresponding inspection holes are opened at the bottom of the suspension grooves. The present invention can solve the problems in the prior art that the construction period of the cast - in - place structure of the maglev track beam is too long, and the precision of the prefabricated structure is low and the mechanical continuity is poor.

A telescopic joint suitable for a novel magnetic levitation track comprises main crown rails, auxiliary crown rails and an equipartition connecting rod mechanism, the main crown rails are fixed below flange plates on the two sides of a T-shaped track beam joint, and the auxiliary crown rails are arranged between the main crown rails; a transverse slide way and two longitudinal slide ways are arranged in the middle of the top face of the auxiliary crown rail, and the two longitudinal slide ways are symmetrically distributed on the two sides of the transverse slide way. The equally-divided connecting rod mechanism is a four-connecting-rod mechanism and is arranged on the top of the auxiliary crown rail, hinge points of the four-connecting-rod mechanism are correspondingly connected with the sliding ways in a sliding mode, and the two ends of the four-connecting-rod mechanism are hinged to the top of the front main crown rail and the top of the rear main crown rail respectively. When the main crown rail stretches and retracts along with the T-shaped rail beam, the auxiliary crown rail is driven to move through the equipartition connecting rod mechanism, and gaps between the front end and the rear end of the auxiliary crown rail and the main crown rail are always kept equal. Interference with an electromagnetic module below the bogie of the maglev train can be avoided, and it can be guaranteed that front and rear telescopic gaps of the connector are equal.

The invention discloses a position determination method and device, equipment and a storage medium, and relates to the technical field of magnetic suspension. The magnetic suspension line body comprises a plurality of conveying sections, and the method comprises the steps that the feedback position value of each conveying section and the length of a rotor on the magnetic suspension line body are obtained; determining a target position value according to the distance between two adjacent feedback position values and the length of the rotor; and determining the position of the rotor according to the target position value. Therefore, the technical problem that a rotor position determination method applied to a magnetic suspension system is urgently needed in the prior art can be solved.

The invention discloses a high-speed magnetic levitation power load hardware-in-the-loop simulation test platform and method, and relates to the technical field of hardware-in-the-loop, and the high-speed magnetic levitation power load hardware-in-the-loop simulation test platform comprises a tested controller and a power load simulation module. The power load simulation module is connected with the tested controller through a power cable and a digital signal line, and the power load simulation module can provide a power test environment required by operation for the tested controller. According to the high-speed magnetic levitation power load hardware-in-loop simulation test platform, high-power signal transmission and power characteristic real-time online simulation are realized, and the defect that signal-level hardware-in-loop simulation cannot meet the high-power test requirement of a controller driving part in the prior art is overcome; and the integrity and the accuracy of the test of the high-speed magnetic levitation system controller are obviously improved.

The electromagnetic supporting system comprises an M-shaped rail, a suspension electromagnet and a traction motor stator, the M-shaped rail comprises a body and a traction motor secondary induction plate fixed to the middle of the lower surface of the body, and the upper surface of the body is fixedly connected with the lower surface of a T-shaped rail beam. The suspension electromagnet is located below the M-shaped rail and installed on the lower portion of a suspension frame supporting arm of the vehicle body, the suspension electromagnet comprises a U-shaped iron core and an electromagnet winding wound around the middle of the U-shaped iron core, the two ends of the U-shaped iron core upwards point to a body of the M-shaped rail, and a traction motor stator is fixed to the upper portion of the electromagnet winding and corresponds to a traction motor secondary induction plate in position. According to the invention, the suspension energy consumption of the medium-low-speed magnetic suspension vehicle in a vehicle rail-holding form is reduced, and the service life of the suspension electromagnet is prolonged.

The invention discloses a self-energized magneto-rheological vibration reduction system and method suitable for transverse and vertical coupling vibration of a high-speed normal-conducting maglev train, and relates to the field of magnetic suspension. The suspension surface current collection coil and the guide surface current collection coil are used for inducing magnetic field changes and generating induced electromotive force; the energy management system is used for rectifying, boosting and stabilizing the induced electromotive force and storing electric energy; the acceleration detection system is used for detecting transverse and vertical vibration accelerations of the vehicle body; the control system is used for outputting control current according to the vibration signal; and the transverse magneto-rheological damper and the vertical magneto-rheological damper are used for outputting variable damping force according to the control current and restraining transverse and vertical vibration of the vehicle body. According to the method, effective suppression and energy recovery of transverse and vertical vibration are realized without depending on current frequency division processing, so that the decoupling control problem caused by active control noise in a normal-conducting magnetic levitation system is solved.

The utility model discloses a precise rotor structure for a high-speed magnetic suspension motor. The precise rotor structure comprises a protection mechanism and a rotor shaft, the protection mechanism comprises a front protection barrel, a rear protection barrel, an air inlet hole and a spiral guide vane, key grooves are formed in the upper sides and the lower sides, deviating from the outer ends, of the inner arc faces of the front protection barrel and the rear protection barrel, the air inlet hole is formed in the left end of the outer arc face of the front protection barrel, and the spiral guide vane is arranged in the front protection barrel; the rear end of the spiral guide vane extends into the rear protection barrel; flat keys are arranged on the upper side and the lower side of the front end and the rear end of the outer cambered surface of the rotor shaft, and the flat keys and the longitudinally adjacent key grooves are installed in a matched mode. And irreversible damage to a rotor shaft caused by high-temperature welding due to direct contact between the rotor rotating at a high speed and the radial magnetic suspension bearing is avoided, and meanwhile, the uniformity of heat dissipation of the rotor is improved.

The invention discloses a magnetic levitation traffic positioning and speed measuring method and system based on a modularized tooth groove plate, and the method comprises the steps: detecting a signal of the modularized tooth groove plate through an eddy current sensor, the modularized tooth groove plate is formed by arranging metal sheets sealed by an insulating material according to a rule, the width of the metal sheets is fixed to be 1, and the position where the metal sheets are located is teeth; the groove width between the adjacent teeth is a specified multiple of l; calculating the running speed of the train according to the waveform time difference of the signals output by the at least two eddy current sensor coils at fixed intervals; carrying out absolute position coding through different tooth groove width ratios to obtain a train absolute position ID; matching line basic data information according to the train absolute position ID, wherein the line basic data information comprises turnout, ramp or curve information; and outputting the speed, the absolute position and the line basic data information to a train control system so as to adjust a train dynamic operation control strategy. According to the invention, the stability and comfort of train operation are effectively improved, and the cost and complexity of the system are reduced.