34 results about "Magnetic levitation system" patented technology

This invention discloses a method, self-sensing system, and medium for predicting rotor displacement of a magnetic levitation bearing, belonging to the interdisciplinary field of artificial intelligence and magnetic levitation systems. The method includes: a training phase: collecting waveform data of the winding current and actual rotor displacement of the magnetic levitation bearing under different operating conditions; using the winding current values ​​and operating condition categories at times (t-1), (t-2), ..., (t-n) as input and the rotor displacement value at time t as output, training a rotor displacement prediction model; where n is an integer greater than or equal to 2; and an application phase: acquiring the winding current values ​​and operating condition categories from the previous n times in real time, inputting them into the trained rotor displacement prediction model, and predicting the rotor displacement value at the current time. This invention can predict rotor displacement through real-time winding current information of the magnetic bearing, thereby enabling fault response to displacement sensors in magnetic levitation systems, reducing dependence on displacement sensor hardware, and even replacing displacement sensors, thus reducing costs.

The utility model discloses an embodiment relates to a kind of based on 6D magnetic levitation system's laser etching machine, and the utility model is driven by magnetic levitation transmission mechanism to carry out displacement mobile, and it is combined first laser etching area, second laser etching area, turnover area and detection area, and corresponding laser etching mechanism, turnover mechanism and detection mechanism, realize the high-precision transmission of electric core, double-sided laser etching and real-time detection, to solve the problem of low transmission accuracy, big mechanical impact and insufficient flexibility in the prior art, improve electric core transmission accuracy and stability, reduce mechanical impact, enhance production line flexibility.

This application provides a displacement sensor and a magnetic levitation system. The magnetic levitation system includes a magnetic levitation bearing and a displacement sensor. The displacement sensor includes: a first magnetic source mounted on the rotor shaft of the magnetic levitation bearing, used to generate a magnetic field; a substrate fixedly disposed at a distance from the first magnetic source, with a central hole for the rotor shaft to pass through; and a Hall array including multiple Hall chips, each attached to and electrically connected to the substrate. The Hall chips are distributed around the central hole, and each Hall chip can detect the magnetic flux density at its respective location to obtain position information of the first magnetic source and the rotor shaft. Compared to traditional magnetic levitation bearings, this application uses fewer displacement sensors, thus reducing the installation space occupied by the displacement sensors. It is also suitable for applications where the rotor shaft is extended.

The invention provides a non-contact power supply-based magnetic suspension rotor wireless energy transmission method and system, and relates to the technical field of non-contact power supply, and the method comprises the steps: carrying out the motion state vector reconstruction of a magnetic suspension rotor, and outputting a pose priority weight vector; setting a data acquisition scheduling strategy; receiving a six-degree-of-freedom native state set; after load impedance transient response data are received, the real-time pose of the rotor is reconstructed and output; fitting the instantaneous optimal frequency and the current waveform phase compensation amount of the resonant cavity; loading to an adaptive power mapping model, and predicting a power demand change trend; and dynamically tuning output parameters of the high-frequency inverter, and performing coupling efficiency offset compensation. The technical problem that the performance of a whole magnetic suspension system is affected due to the fact that a wireless energy transmission method in the prior art depends on static frequency and current waveform setting and is difficult to adapt to the rapidly changing motion state and load requirement of a magnetic suspension rotor in real time is solved.

This application relates to a method, apparatus, computer equipment, and medium for judging the performance degradation of magnetic levitation systems. The method includes: firstly, using the Symmetric Polar Coordinate (SDP) method, converting one-dimensional time-series data (3 sets of suspension gaps, 2 sets of vertical accelerations, and 1 set of electromagnet currents) into two-dimensional images, achieving interpretable fusion of multi-source parameters, reducing the false positive rate of single-data noise, and improving feature representation. Then, using a pre-trained Swin Transformer to extract multi-scale features from the images, mapping them, and then using a dual encoder to mine discriminative concept embeddings. Features are fused using a concept weight matrix, and a model is trained by combining fine-grained classification loss and dual-objective constraint loss. Real-time running data is converted into images using the same method, and the trained model is used for discrimination, solving the problems of limited receptive field and insensitivity to weak features in traditional models, significantly improving the accuracy of degradation recognition.

In various embodiments, a method for determining a position of an element of a mechanical system relative to a levitated platform of a magnetic levitation system and / or a workpiece located thereon. The method comprising the following position referencing steps: monitoring at least one parameter of the magnetic levitation system indicative of the position of the levitated platform with respect to the magnetic levitation system, inducing relative movement between the levitated platform and the element of the mechanical system, stopping the relative movement between the levitated platform and the mechanical system when physical contact is established, and determining the position of the element of the mechanical system relative to the levitated platform. The method described herein can be used in additive manufacturing and assembly processes to correct for any misalignment between two independently operating systems.

This invention discloses a permanent magnet electromagnetic levitation steam turbine generator, relating to the field of generator sets. It includes a base plate, a generator set base, a stator block, stator coils, magnetic pole windings, and end shafts. The generator set base is fixedly mounted on the upper end of the base plate. The permanent magnet electromagnetic levitation steam turbine generator of this invention allows the rotor to be in a levitation state, completely avoiding the mechanical friction of traditional rotor bearing pressure structures. Once a displacement sensor detects a deviation, the position of the magnetic levitation structure can be finely adjusted by adjusting the screw or changing the current in the conductive coil, achieving overall dynamic adjustment of the magnetic levitation structure. This ensures that the rotor eccentricity meets power generation requirements. The threaded fit between the adjusting screw and the screw seat allows for independent adjustment of the local position of the support ring. The rotor magnetic partition and the levitation magnetic partition isolate the generator's magnetic field from the detection mechanism, preventing mutual interference. The cooperation between the anti-detachment rod and the anti-detachment sleeve provides temporary mechanical support in case of unexpected failure of the magnetic levitation system.

This invention discloses a motor, a control method for the motor, and a flywheel energy storage device. The motor includes a rotor and a vibration damping assembly. The vibration damping assembly includes a magnetic levitation assembly and a vibration damping element. The magnetic levitation assembly is sleeved on the outside of the rotor, and the vibration damping element is sleeved on the outside of the magnetic levitation assembly. In the radial direction, the vibration damping element and the magnetic levitation assembly are spaced apart. When the radial amplitude of the rotor exceeds a preset value, the magnetic levitation assembly moves towards the vibration damping element, and the magnetic levitation assembly is coupled to the vibration damping element. This reduces the load on the magnetic levitation system while ensuring normal motor operation, converting additional vibration into heat through the vibration damping element for release, thus extending the service life of the magnetic levitation assembly.

The application discloses a maglev long-stator cable winding pressing embedding method and device, a laying method and equipment, relates to the technical field of maglev rail transit, and the maglev long-stator cable winding pressing embedding method comprises the following steps: receiving and positioning a cable winding unit, obtaining position information of a stator core, adjusting the pressing embedding position of the cable winding unit according to the position information and positioning information of the cable winding unit, and pressing embedding the cable winding unit in a groove of the stator core. The maglev long-stator cable winding pressing embedding method is simple and convenient to operate, has strong applicability, can effectively solve the problems of complex structure, poor positioning accuracy, difficult pressing embedding operation, slow operation speed and low efficiency in the existing pressing embedding device, and can reduce the risk of transmission damage, improve the pressing embedding accuracy, improve the operation efficiency and reduce the investment cost.

The invention discloses a maglev adjustable track assembly and a construction method thereof, and relates to the technical field of maglev systems.The maglev adjustable track assembly comprises a beam body, a track connecting pre-buried assembly, a track mounting assembly and a U-shaped track section, the first connecting end of the track mounting assembly is detachably arranged on a cantilever end through a first fastener, and the mounting position of the track mounting assembly is adjustable in the elevation direction; the U-shaped rail section is detachably hung at the second end of the rail installation assembly through a second fastener, and the installation position is adjustable in the transverse direction. According to the magnetic levitation adjustable track assembly, when the beam body is prepared, the track connecting pre-embedded assembly is pre-embedded, the U-shaped track sections and the track mounting assemblies are pre-positioned and assembled through the second fasteners to form the pre-assembled track panel, the pre-assembled track panel can be adjusted up and down relative to the beam body, and the U-shaped track sections can be adjusted left and right relative to the beam body; compared with a beam-rail integrated structure, the dependence on the manufacturing precision of the beam body is reduced through rail installation, the manufacturing precision of the beam body and the rail is greatly reduced, and the construction cost is reduced.

The invention provides a UAV-InSAR-based magnetic levitation system multi-point cooperative reinforcement learning compensation control method, system and device and a medium, and the method comprises the steps: carrying out the high-precision surveying and mapping of a magnetic levitation line through employing an unmanned plane to carry a lightweight X-waveband interferometric synthetic aperture radar system, and constructing a track irregularity power spectrum model; a hierarchical control system is constructed, and an amplitude saturation controller on the lower layer generates a basic electromagnetic force control law according to the state quantity of the current suspension point; the upper-layer compensator based on reinforcement learning serves as an intelligent agent, interacts with an environment jointly formed by the suspension frame, the track and the amplitude saturation controller, carries out training by utilizing a standardized irregularity function obtained from a track irregularity power spectrum model, and outputs compensation control quantity for each suspension point; and superposing the basic electromagnetic force control law and the compensation control quantity to generate a total electromagnetic force control law of each suspension point, and carrying out active cooperative compensation and global stable suspension control on the suspension system. The comprehensive control performance of the suspension system is remarkably improved.

The application discloses an abnormality detection method and device of a magnetic suspension bearing system, the magnetic suspension bearing system and a storage medium, and relates to the technical field of magnetic suspension bearing systems. The method comprises the following steps: during the operation of the magnetic suspension bearing system, determining whether the suspension current of the magnetic suspension bearing system is abnormal according to the current suspension current and a pre-determined standard suspension current; if the abnormality is confirmed, changing the suspension position of the rotor to the center position of the preset magnetic bearing according to the pre-determined standard suspension current, and determining the fault point of the abnormal suspension current according to the current suspension current and the pre-determined standard suspension current. According to the scheme, whether the current suspension current is abnormal is determined by comparing the current suspension current with the standard suspension current, the suspension position of the rotor is adjusted if the abnormality is confirmed, and the abnormality reason is determined according to the current suspension current and the standard suspension current, so that whether the suspension current is abnormal and the abnormality reason can be found in time, and the efficiency of abnormality detection is improved.

The invention discloses a control method and device of a frequency converter, a magnetic suspension system, a storage medium and a computer program product, the frequency converter is used for supplying power to a motor and a bearing in the magnetic suspension system, the frequency converter is provided with an inverter, and the method comprises the following steps: under the condition that the frequency converter enters an energy feedback stage, obtaining a bus voltage of the frequency converter, obtaining the output current of the inverter, and obtaining the output voltage of the inverter; according to the bus voltage of the frequency converter, the output current of the inverter and the output voltage of the inverter, determining a zero crossing point of the inverter and a dead zone compensation voltage of the inverter; and at the zero crossing point of the inverter, performing dead-zone compensation on the inverter by using the dead-zone compensation voltage of the inverter so as to realize dynamic dead-zone compensation control of the frequency converter at the energy feedback stage. According to the scheme, compensation control is carried out on the dead time of the switching tube in the inverter in the energy feedback stage of the frequency converter, so that the loss of the switching tube is reduced, and the energy feedback efficiency is improved.

This invention provides a magnetic levitation bearing and a magnetic levitation bearing system. The magnetic levitation bearing includes: a bearing housing, an axial bearing, and a radial bearing. The axial bearing and the radial bearing are arranged along the axial direction of a rotating shaft. The axial bearing includes an axial bearing rotor, and the radial bearing includes a radial bearing rotor. The axial bearing rotor is disposed on the outer periphery of the rotating shaft and rotates integrally with the rotating shaft. The axial bearing rotor and the radial bearing rotor are connected axially to each other on the rotating shaft. The axial bearing acts on the rotating shaft through the axial bearing rotor, and the radial bearing acts on the rotating shaft through the radial bearing rotor. According to this invention, the radial dimension of the magnetic levitation bearing can be reduced, and the rotor's fixed frequency can be increased, so that the strength of the bearing rotor can effectively meet the requirements at high power and high speed. This makes it suitable for high-power, ultra-high-speed magnetic levitation systems and more suitable for high-speed applications.

The application belongs to the technical field of electric machines, and discloses a magnetic suspension controller device and a filtering method for resisting electromagnetic interference; the method comprises the following steps: preparing a quantum limited magnetic guide unit, collecting the internal magnetic flux and temperature data of the magnetic core in real time through an embedded sensor array, and building a corresponding magnetic permeability regulation model; obtaining the output of the magnetic permeability regulation model, and analyzing to obtain real-time inductance; based on the real-time inductance, combining a preset target inductance, and compensating the real-time inductance through a gate voltage regulation and inductance compensation collaborative strategy; filtering the compensated real-time inductance by using a PID controller; under the coupling environment of a strong magnetic field and high temperature, the application can effectively reduce the nonlinear decline amplitude of the magnetic permeability, reduce the inductance value drift, filter cutoff frequency offset and current ripple, improve the rotor suspension precision, and significantly improve the filtering stability and control reliability of the magnetic suspension system in extreme environments.

The invention provides a miniature magnetic levitation double-layer track beam and a mounting and adjusting tool thereof. The miniature maglev double-layer track beam comprises a box beam extending in the longitudinal direction, a straddle type maglev vehicle track and a hanging type maglev vehicle track. The straddle type maglev vehicle track is arranged on the top surface of the box girder and extends in the longitudinal direction; the hanging type maglev vehicle rail is arranged on the bottom face of the box girder and extends in the longitudinal direction. According to the miniature maglev double-layer track beam, the straddle type maglev vehicle track and the hanging type maglev vehicle track are arranged on the top face and the bottom face of the box beam correspondingly, so that a straddle type maglev vehicle and a hanging type maglev vehicle can share the miniature maglev double-layer track beam. According to the design, the aim that a single track beam is compatible with double-system maglev vehicle operation is achieved, the limitation that a traditional miniature maglev system is single in track beam system is broken through, the track beam resource utilization rate is increased, the construction cost and land resources can be saved, the flexibility of the system is enhanced, and the application range is wide. And an innovative solution is provided for multifunctional application and future development of the miniature magnetic levitation system.

This invention relates to the field of magnetic levitation system technology, and in particular to a method, device, and storage medium for measuring the contact point between the stator and the float. The method for measuring the contact point between the stator and the float (the extreme point of the excitation current-float displacement curve) first determines the search interval range within which the contact point between the stator and the float (the extreme point of the excitation current-float displacement curve) lies. Using an interval optimization method, the search interval is iteratively narrowed until it is sufficiently small, or the current change at several consecutive points is sufficiently small. The iteration stops, and the process returns to the midpoint of the search interval to obtain the contact point between the stator and the float. This invention, by using an interval optimization method to gradually approximate the point, ensures that the contact point between the stator and the float is found within a certain accuracy. Furthermore, during the search process, only the float slightly compresses the stator in the initial stage; the degree of compression by the float on the stator does not become more severe in subsequent stages, thus avoiding levitation instability or structural damage.

This invention relates to the field of supercritical fluid dynamic machinery and proposes a supercritical carbon dioxide rotor shaft system based on an axial magnetic levitation device. The system comprises, sequentially along the main shaft, a compressor impeller, a magnetic levitation device, a magnetic levitation thrust disk, a foil bearing, a motor magnet, and a turbine impeller. It employs an active magnetic levitation system composed of magnetic levitation coils and a thrust disk to achieve non-contact, dynamic adjustment and support of the rotor's axial thrust. Simultaneously, the foil bearings at the compressor and turbine ends provide radial support, combined with dry gas sealing devices at both ends to control working fluid leakage. This invention's magnetic levitation axial support eliminates contact friction and wear of mechanical bearings, adapting to high-speed, high-pressure differential operating conditions; the foil bearings form an air film at high speeds to achieve radial non-contact levitation of the rotor, resulting in stable and efficient operation; the synergy of multiple non-contact technologies significantly reduces friction loss and maintenance requirements, making the integrated TAC machine structure more compact and its operation more reliable and durable.

A control system for controlling a magnetic levitation system comprises a sensor (101) configured to generate a position signal indicative of a position of an object (102) to be magnetically levitated, and a controller (103) configured to control a current supplied to a magnetic actuator of the magnetic levitation system in dependence on the position signal to magnetically levitate the object. The control system comprises a computing system (104) configured to maintain and update a computational model of the magnetic levitation system based on an identification run in which an identification run signal is supplied to the magnetic actuator of the magnetic levitation system and a response to the identification run signal is detected from the sensor and / or the magnetic actuator. The computing system is configured to compare quantities related to the computational model and quantities related to the magnetic levitation system to reveal deviations from expected operating conditions of the magnetic levitation system.

The application discloses a well-pit-free externally-hung type potential energy recovery permanent magnet power magnetic levitation elevator, and aims at the pain points of traditional traction type elevators, such as elevator unpredictability safety hazards, complex elevator maintenance and high cost, limited space in old community, difficulty and high cost of well-pit construction, high dependence on thermal power, and proposes an integrated solution. The application mainly comprises a potential energy recovery permanent magnet generator, a magnetic levitation system device, a non-contact magnetic damping braking device, a well-pit-free externally-hung type double guide rail supporting structure and a multi-stage wheel axle speed increasing transmission type auxiliary lifting mechanism. The application combines the well-pit-free magnetic levitation design and the potential energy recovery generator, and can effectively solve the pain points of traditional elevators, such as high dependence on thermal power supply, indirectly increased greenhouse harmful gases, high difficulty and cost of well-pit construction and limited space in old community, and simultaneously realizes controllable manufacturing cost of elevator equipment, well-pit-free erection, controllable overall volume, and reduces the high dependence of elevators on thermal power supply, and is suitable for practical engineering requirements of old community elevator installation and solving the pain points of traction type elevators.

The utility model discloses a fluoroplastic insulating rubber sheath metal shielding field feed cable, which relates to the technical field of cables, and comprises a plurality of groups of conductors, insulating layers are arranged outside the conductors, the conductors and the insulating layers form insulating wire cores, two groups of insulating wire cores are twisted in pairs to form a twisted wire core, and the twisted wire core is arranged between the conductors and the insulating layers. A shielding layer is arranged outside the twisted-pair wire cores; according to the utility model, the conductors, the insulating layers, the shielding layer, the filling layer, the wrapping layer, the outer protective layer, the tensile member and the tensile layer are combined, and the shielding layer is braided and covered by tinned copper wires to form a continuous metal shielding layer, so that electromagnetic interference can be effectively inhibited, and the requirement of precision equipment such as a magnetic suspension system on signal purity is met; meanwhile, the braided structure keeps the flexibility of the cable and adapts to laying in complex terrains, and when the cable bears longitudinal tension, the tensile member shares large stress to prevent the conductor or the insulating layer from being fractured due to excessive tensile, thereby forming full-dimensional performance adaptation to complex outdoor environments.

The invention discloses a magnetic suspension system for varnished wire painting, which belongs to the technical field of varnished wire processing, and is characterized in that the magnetic suspension system comprises a mold base and a mold assembly, frame units of the mold base are arranged in a honeycomb structure, and each outline of the frame units is provided with a magnet to form a suspension magnetic field; a mold buckle of the mold assembly sleeves the outer side of a mold body, and the gravity center of the mold buckle coincides with the center point of the suspension magnetic field; and an adjusting assembly, a recycling assembly and the like are arranged, so that the core shift risk caused by mechanical friction is greatly reduced, defective products caused by the eccentricity problem are reduced, and the film performance of the enameled wire is improved.

A kind of normal magnetic levitation system track structure and its installation method, to effectively reduce the construction cost of magnetic levitation system track structure, track unit can realize accurate positioning and easily realize three-dimensional adjustable, reduce the precision influence caused by the construction error of offline civil foundation, can better adapt to the deformation of offline foundation.Track structure includes track unit and the track foundation for providing support, and fixedly installed in the track unit lateral two sides of the suspension guide rail, the main body of track unit is formed by two longitudinal supporting sleepers with lateral interval and steel rail sleeper with longitudinal interval on it, each steel rail sleeper is fixedly installed on longitudinal supporting sleeper by magnetic levitation fastener.Suspension guide rail is fixedly installed on the length direction end wall of steel rail sleeper by connecting rod in the way of counter-pulling.Track foundation is columnar structure body with longitudinal supporting sleeper downward direction along the line direction interval arrangement, longitudinal supporting sleeper is fixedly connected with columnar body by connecting member.

The application discloses a kind of control method, device, magnetic suspension system and storage medium of magnetic suspension system, the method includes: before being suspended after being powered on on magnetic suspension bearing, the first direct current voltage peak value that the sinusoidal wave signal detected by first eddy current displacement sensor is exported after first peak detection circuit, the second direct current voltage peak value that the sinusoidal wave signal detected by second eddy current displacement sensor is exported after second peak detection circuit;After magnetic suspension bearing is suspended, the current operating frequency of compressor is acquired;According to first direct current voltage peak value and second direct current voltage peak value, the current operating frequency of compressor, the current capacity of capacitance module is adjusted.The scheme, by using peak detection circuit to process the sinusoidal wave signal generated by eddy current displacement sensor obtains the voltage signal of the shaft displacement of magnetic suspension bearing, and according to the current operating frequency of compressor, the parameter of peak detection circuit is adjusted, and the sensitivity of magnetic suspension bearing control is improved.

An assembled grid tray is disclosed that includes a frame for holding a plurality of substrate trays to form a larger tray for use in a semiconductor processing tool. The frame can include two outer frame members that hold one or more trays, each outer frame member having a magnetic track for use with a magnetic levitation system. The frame can further include an inner frame member positioned between the outer frame members that can also include a magnetic track, where the frame members are held in place by one or more outer beam members. The frame members can be made of a material that has a similar thermal expansion as the trays placed in the frame.

The application discloses a kind of magnetic levitation adjustable track assemblies and its construction method, it is related to magnetic levitation system technical field, including beam body and track connection embedded component, track installation component and U-shaped rail segment, the first connecting end of track installation component is detachably arranged on overhanging end by first fastener and installation position is adjustable along elevation direction, U-shaped rail segment is detachably hung and arranged in the second end of track installation component by second fastener and installation position is adjustable along transverse direction;The magnetic levitation adjustable track assembly of the application, track connection embedded component is embedded in advance when preparing beam body, U-shaped rail segment and track installation component are prepositioned assembly by second fastener and form pre-assembled track row, pre-assembled track row is adjustable up and down relative to beam body, U-shaped rail segment is adjustable left and right relative to beam body, relative to beam rail integrated structure, track installation reduces the dependency of manufacturing precision of beam body, substantially reduces the manufacturing precision of beam body and track, reduces engineering cost.

This invention discloses a series-connected integrated system and control method for magnetic bearings and motor windings, relating to the field of motor control technology. The integrated system includes: a series-connected magnetic bearing winding, a three-phase AC motor with windings, and an inverter shared by the magnetic bearing winding and the three-phase AC motor and connected to the magnetic bearing winding; it also includes a three-phase differential reference voltage generation module, a three-phase fundamental reference voltage generation module, and a carrier comparison modulation module. The carrier comparison modulation module is connected to the inverter, and the three-phase differential reference voltage generation module and the three-phase fundamental reference voltage generation module are connected to the carrier comparison modulation module through a first group adder. This invention deeply integrates the voltage levitation and rotation functions of the two parts, optimizing the number of controllers and power devices in the magnetic levitation motor system, forming a single, compact, and efficient power core for an electric drive magnetic levitation system.

The invention discloses an equivalent calculation method for magnetic field degradation of a closed-loop high-temperature superconducting magnet under excitation of a harmonic magnetic field. The equivalent calculation method comprises the following steps: calculating harmonic currents generated by induction in a suspension coil and corresponding space harmonic magnetic field distribution; determining harmonic magnetic field components of main orders, and extracting excitation conditions; applying a target current to the high-temperature superconducting magnet at a set excitation rate; applying harmonic current to the suspension coil, and simulating harmonic magnetic field disturbance in actual operation; selecting second half cycle data of the stable change stage of the resistive loss, and performing inversion calculation to obtain an equivalent resistance value; changing the exciting current of the high-temperature superconducting magnet, applying different exciting currents point by point, and obtaining the corresponding superconducting magnet resistance value under each exciting current working condition; dynamic response characteristics of the high-temperature superconducting magnet resistance under harmonic magnetic field excitation are obtained; calculating a magnetic field degradation curve of the high-temperature superconducting magnet under harmonic magnetic field excitation; the invention provides a key theoretical tool for magnet design and safety control of the superconducting magnetic levitation system.

In various embodiments, a method for determining the position of an element of a mechanical system relative to a levitation platform of a maglev system and / or a workpiece located thereon. The method comprises the steps of: monitoring at least one parameter of the maglev system indicative of the position of the levitation platform relative to the maglev system, causing a relative movement between the levitation platform and an element of the mechanical system, stopping the relative movement between the levitation platform and the mechanical system when a physical contact is established, and determining a position of an element of the mechanical system relative to the levitation platform. The methods described herein may be used to correct for any misalignment between two independent operating systems during additive manufacturing and assembly processes.

The invention relates to the technical field of horizontal centrifugal casting equipment, in particular to horizontal centrifugal casting high-precision active control equipment based on the magnetic levitation technology and a technological method.The horizontal centrifugal casting high-precision active control equipment based on the magnetic levitation technology comprises an electric control cabinet, a cold mold and a carrier roller shaft and further comprises a transmission system used for providing power for the equipment; the radial suspension supporting structure is used for providing radial force support for the carrier roller shaft so as to realize suspension in the radial direction; the axial suspension supporting structure is used for providing axial force support for the carrier roller shaft so as to realize suspension in the axial direction; the position detection and active control system is integrated, radial and axial position offset signals in the cold type rotating process can be collected in real time, the suspension supporting force is dynamically adjusted through the magnetic suspension system, high-precision active control over the rotating posture of the cold type is achieved, posture offset in the rotating process is effectively restrained, and the stability of the rotating posture of the cold type is improved. Contact friction between the cold mold and peripheral parts is avoided, abrasion of the outer surface of the cold mold is reduced fundamentally, and the service life of the cold mold is prolonged.