31 results about "Permanent magnet linear motor" patented technology

The invention discloses a transverse magnetic flux linear motor adopting a Y-shaped iron core and a Halbach array, belongs to the field of permanent magnet linear motor design, and aims at solving the problems that a traditional transverse magnetic flux linear motor is low in permanent magnet utilization rate, large in magnetic leakage and insufficient in power density. The device comprises a primary part and a secondary part, the primary part comprises stator iron cores which are sequentially arranged in the axial direction, each stator iron core is provided with three armature modules which are evenly distributed in the circumferential direction, and each armature module comprises long armature teeth, short armature teeth and armature windings. The tail ends of the long and short teeth adopt an inclined air gap and magnetism gathering pole shoe design; the secondary part comprises a Y-shaped secondary pole iron core and a Halbach permanent magnet array on the surface of the Y-shaped secondary pole iron core, and the permanent magnet array is divided into three areas in the circumferential direction, and the three areas correspond to the three-phase armature modules of the primary part respectively; the permanent magnets in each area are formed by staggering N poles and S poles in the axial direction, and the adjacent areas are staggered in the axial direction.

This invention discloses a harmonic suppression control method for a resonant-cascaded active disturbance rejection permanent magnet linear motor (PMLM) based on a positioning force model, belonging to the field of PMLM control technology. Addressing the problems of incomplete periodic harmonic suppression, poor robustness to unknown disturbances, and insufficient synergy between resonance and active disturbance rejection, this invention embeds the positioning force model into the state-space equation of the active disturbance rejection controller and embeds the resonant controller into the second-stage observation channel of a two-stage extended state observer, constructing a three-layer collaborative architecture of model feedforward compensation, resonant frequency selection suppression, and extended state observer broadband estimation. The positioning force model actively compensates for known harmonic disturbances, the embedded resonant controller accurately suppresses residual periodic components, and the extended state observer compensates for nonlinear and aperiodic disturbances in real time. This invention achieves full-link collaborative suppression of positioning force harmonics, inductor asymmetry harmonics, and unknown disturbances in PMLMs under low-speed, high-speed, and variable-speed conditions, significantly reducing current harmonics and improving system stability and control accuracy. Simulation results show that this control method can achieve high-precision servo control of PMLMs.

The invention discloses an end effect suppression device, a design method and a cylindrical permanent magnet linear motor, and relates to the technical field of linear motors, the end effect suppression device comprises a magnetic circuit compensation structure installed at at least one end of a primary motor; the magnetic circuit compensation structure consists of at least two layers of sleeves which are concentrically nested and are made of a high-permeability material, and an axial guide mechanism is arranged between adjacent sleeve layers, so that the inner-layer sleeve can slide along the axial direction of the motor relative to the outer-layer sleeve; the outermost layer of sleeve is fixedly connected with the end part of the primary, and the innermost layer of sleeve is arranged to be capable of keeping coupling with the secondary in the operation process of the motor, so that continuous magnetic circuit connection is formed among the secondary, the magnetic circuit compensation structure and the primary, and an air gap magnetic field at the end part of the primary is guided and reconstructed. According to the invention, the end magnetic field distortion and magnetic resistance are directly suppressed from the physical level, and the output stability, control precision and environmental adaptability of the motor are improved.

The invention relates to a high-speed permanent magnet linear motor test system and method, and the system comprises a secondary device which bears and fixes a linear motor secondary, a primary device which is disposed above the secondary device and is used for bearing and fixing a linear motor primary, the primary device can vertically ascend and descend relative to the secondary device, and a sensing unit is disposed on the primary device. The sensing unit is used for acquiring at least one acting force of transverse thrust, normal thrust and longitudinal thrust generated by the linear motor. According to the high-speed permanent magnet linear motor test system and method provided by the invention, the thrust ratio of the linear motor in each direction during static load can be automatically measured, and the air gap can be automatically adjusted. Test of linear motors of different models and different sizes is fully considered in the structural design, the application range is wide, and operation is convenient.

The utility model discloses a permanent magnet narrow-band linear sorting machine which comprises a plurality of supporting steel frames, the supporting steel frames are arranged up and down, a double-edge sealing plate is fixedly connected between the supporting steel frame arranged on the upper portion and the supporting steel frame arranged on the lower portion, and a transparent protection plate is arranged on the double-edge sealing plate. According to the sorting device, the permanent magnet linear motor of the driving assembly can drive and convey the sorting assemblies, the sorting assemblies annularly move through the driving assembly and can drive objects to be conveyed, and when the objects are conveyed to a preset position, the conveying belts on the sorting assemblies can transversely convey the objects, so that sorting is achieved; compared with a traditional sorting device, the multiple sorting assemblies are connected, a transmission belt of the sorting assemblies is narrow, accurate sorting can be achieved, the device is driven by the permanent magnet linear motor, and compared with a traditional driving mode, the sorting assemblies can move more stably.

The utility model discloses a double -sided permanent -magnetic linear motor, including the rotor structure and stator structure. The rotor structure includes rotor yoke part and a plurality of rotor units, and the rotor unit includes rotor tooth part, winding, pole shoe part and first permanent magnet, and the vertical one end of pole shoe part is equipped with the first installation slot, and first permanent magnet fixed mounting is in the first installation slot, and the stator structure includes stator yoke part, a plurality of stator tooth parts and a plurality of second permanent magnets, and stator tooth part is protruding in the vertical one end of stator yoke part, and the second installation slot is defined between every two stator tooth parts, and second permanent magnet fixed mounting is in the second installation slot, and the first chamfer structure is equipped with in each edge of its outside of pole shoe part respectively and in each edge of the slot mouth of first installation slot, and the second chamfer structure is equipped with in each edge of stator tooth part. The utility model can make the thrust density of linear motor greatly increase, to help increasing the thrust of linear motor.

The utility model relates to motor technical field especially relates to a kind of excitation type series excitation linear motor, including shell and its inside stator coil and motional coil and the drive shaft axially slidingly connected in shell. Limiting piece that shell is equipped with limit the circumferential movement of drive shaft, the first end of drive shaft is connected with motional coil by penetrating into shell interior, and the second end of drive shaft penetrates out shell exterior. Stator coil is set in the outside of motional coil, and there is air gap between the two, and the series excitation mode connection between the two, the excitation magnetic field coupling between stator coil and motional coil makes motional coil drive shaft linear motion, compared with the existing permanent magnet linear motor, no longer rely on permanent magnet to form magnetic field, effectively reduce the manufacturing cost of motor, avoid the assembly and failure problem related with permanent magnet, and with high thrust density, application range is wider, especially can be applied to the field such as needleless injection and electromagnetic riveting of higher thrust intensity requirement.

The invention provides a super transient impulse permanent magnet linear motor, and relates to the technical field of permanent magnet motors. The motor comprises a two-phase winding edge (winding edge for short) and a magnetic steel excitation edge (magnetic steel edge for short), and when the winding edge serves as a rotor, the magnetic steel edge serves as a stator; and vice versa; wherein the length of the stator meets the requirement of the mechanical motion length, and the length of the rotor is determined according to the impulse required by the load; a two-phase (90-degree electrical angle) variable-frequency power supply is connected to the winding side, mutual inductance between armature windings is eliminated, the transient response and the maximum thrust capacity of the armature windings are greatly improved, and super-transient linear motion of the rotor is achieved.

The application provides a kind of hybrid magnetic circuit linear rotary permanent magnet motor magnetic field decoupling control system and method, the hybrid magnetic circuit linear rotary permanent magnet motor has the ability of independent driving and simultaneous driving of linear part and rotary motion part to realize helical motion;Including a stator and a rotor;Stator includes two sets of windings, respectively for rotary and linear motion control;Rotary motion part adopts switched reluctance motor structure, linear part adopts permanent magnet linear motor structure, two drive parts share stator teeth and rotor teeth, and nine half-bridge power converters are used for driving control, wherein three half-bridge drivers drive and control a set of windings, and the remaining six half-bridge drivers drive and control another set of windings.The application can not only suppress the periodic fluctuation of speed caused by coupling and reduce the position error, but also will not cause the distortion of dynamic response of original linear active disturbance rejection controller and other frequency band gain outside the resonance frequency.

This invention proposes a control system for a double-layer vibration isolation device, comprising: a tubular permanent magnet linear motor, a first damping component, an intermediate raft, a second damping component, and a vibration isolation platform arranged sequentially along the direction away from the hull surface; the intermediate raft is mounted on the hull surface via the tubular permanent magnet linear motor and the first damping component, and a first displacement sensor is mounted on the intermediate raft; the vibration isolation platform is mounted on the side of the intermediate raft away from the hull surface via the second damping component, and a second displacement sensor is mounted on the vibration isolation platform; the tubular permanent magnet linear motor is electrically connected to an energy storage battery, and selectively converts mechanical energy into electrical energy or electrical energy into mechanical energy according to the displacement of the intermediate raft and the vibration isolation platform. By detecting the corresponding displacement signal through the displacement sensor and coordinating the dual-mode operation of the tubular permanent magnet linear motor, precise and rapid switching between active vibration isolation and passive energy feeding is achieved in the double-layer vibration isolation system of a ship.

The application provides a flat plate type homopolar and homoslot permanent magnet linear motor, which comprises two oppositely arranged stators, each of which comprises a stator core and an armature winding, each of the stator cores comprises tooth portions and tooth slots, the tooth slots are arranged between adjacent tooth portions, and the armature winding is wound on the tooth portions; a mover is arranged between the two stators, and gaps are arranged between the stators and the mover, the mover comprises a plurality of permanent magnets which are arranged at intervals along the length direction of the stator core, and adjacent permanent magnets are magnetically opposite; the tooth slots comprise first tooth slots and second tooth slots, the number of the first tooth slots is equal to the number of the second tooth slots, and both satisfy Z=3n; the effective magnetic pole number P1 of the permanent magnet corresponding to the first tooth slot to the gap satisfies P1=Z+k1, the effective magnetic pole number P2 of the permanent magnet corresponding to the second tooth slot to the gap satisfies P2=Z-k1, and k1 is a positive integer greater than or equal to 1; and the permanent magnet linear motor can reduce or weaken the thrust fluctuation.

The invention relates to the technical field of permanent magnet linear motor control, and provides a permanent magnet linear motor thrust ripple suppression method, which comprises the following steps: analyzing target sub-harmonic current by using a harmonic analysis module according to motor operation information, extracting a zero crossing point flag bit corresponding to the target subharmonic current, a quadrature-direct axis current in a synchronous rotating coordinate system and an average current in a half harmonic period; based on the zero crossing point flag bit of the target harmonic current, the quadrature-direct axis current under the synchronous rotating coordinate system and the average current in the half harmonic period, calculating the amplitude and the phase of the subharmonic voltage by using an amplitude and phase identification module; generating a PWM control signal based on the sub-harmonic voltage amplitude and the sub-harmonic voltage phase by using a motor control module; and controlling the permanent magnet direct current motor according to the PWM control signal. According to the method, the control effect of motor thrust fluctuation suppression under complex working conditions can be improved.

The invention relates to the field of gravity energy storage, in particular to a doubly salient permanent magnet linear motor system for gravity energy storage and a motor control method. The stator module comprises a stator core, an armature winding and a permanent magnet; the mover module comprises a mover iron core and mover salient poles; the driving control module comprises an FOC controller, an SVPWM unit and a three-phase two-level inverter. Coordinate system current conversion is realized by the Clark conversion unit and the Park conversion unit; the double-closed-loop PI control unit generates a q-axis current reference value according to an actual speed and a given speed error; and an alpha-beta coordinate system voltage is generated through the inverse transformation unit and is input into the SVPWM unit. The energy conversion efficiency is improved structurally, friction and magnetic leakage loss are reduced, system stability is enhanced, rapid peak and frequency regulation, magnetic circuit optimization and end effect and energy loss reduction are realized through accurate control, accurate control of current and speed is realized in combination with a control circuit, the energy conversion efficiency and system stability are improved, and the energy conversion efficiency and the system stability are improved. The maintenance cost is reduced.

The application discloses a segmented double-sided Halbach arc-shaped permanent magnet linear motor and a cooperative control method thereof, and relates to the technical field of motor design and control. The motor adopts a modularized mover and a segmented stator to form a double-sided arc-shaped structure, and the mover permanent magnets are arranged according to a specific rule to form a double Halbach array so as to enhance the air gap magnetic flux density. On the control method, a multi-node network is constructed, a sliding mode load torque observer is adopted to observe the load of each node in real time, the torque distribution is dynamically optimized by a cooperative controller, torque balance is realized, the fault node isolation and redundant operation capability are possessed, the environmental disturbance feedforward compensation and multi-axis decoupling control are integrated, the system robustness is enhanced, and the torque pulsation is inhibited through a current loop. The application is particularly suitable for large telescopes and other super-inertia, super-low-speed, high-precision direct-drive servo systems, and has high thrust, high reliability, high precision and strong anti-interference capability.

This invention relates to a double-sided asymmetric modular permanent magnet linear motor, comprising a secondary assembly and primary assemblies located on the upper and lower sides of the secondary assembly, with an air gap between them. The primary assembly includes a primary core and a primary winding. The primary core has a toothed structure, comprising primary teeth, upper end teeth on the left and right sides of the primary assembly located above the secondary assembly, and lower end teeth on the left and right sides of the primary assembly located below the secondary assembly. The primary winding is wound around the primary teeth. The two primary assemblies are staggered by the unequal width of their upper and lower end teeth, and the total length of the two primary assemblies is equal, with their ends aligned. This motor, based on the aligned upper and lower structures of the double-sided stator, adopts a double-sided asymmetric tooth structure, featuring simple installation, easy processing, high assembly precision, high thrust density, and low noise.

The utility model discloses a permanent magnet linear motor secondary structure, comprising a guard plate assembly, a base plate assembly and magnets, the magnets are arranged on the base plate assembly at intervals, the guard plate assembly covers the base plate assembly, two sides of the base plate assembly are provided with positioning ports along the length of the base plate assembly, and the positioning ports are arranged on the base plate assembly. The permanent magnet linear motor secondary structure is characterized in that the protection plate assembly is composed of a U-shaped part and extension parts on the two sides of an opening, a plurality of positioning teeth are arranged at the positions, intersecting with the extension parts, in the U-shaped part in the length direction of the U-shaped part, and the positioning teeth are matched with the positioning openings. Through the positioning teeth of the protection plate assembly and the positioning openings of the bottom plate assembly, an operator can be conveniently and rapidly helped to complete product assembling work, the occurrence rate of defective products is reduced, and the production efficiency is improved.

This invention provides an enhanced active disturbance rejection control (ADRC) method and its stability analysis method for an adaptive extended state observer (AESO) for permanent magnet linear motors, belonging to the field of high-performance control technology for permanent magnet linear motors. The enhanced ADRC method includes: Step S1, establishing a kinematic model based on the electromagnetic parameters of the permanent magnet linear motor; Step S2, calculating the integral sliding mode control surface based on the kinematic model, and calculating the final sliding mode control law based on the kinematic model and the integral sliding mode control surface; Step S3, obtaining the total disturbance estimate based on the structure of the LESO, and then calculating the bandwidth adaptive law to obtain the adaptive extended state observer (AESO) based on the bandwidth adaptive law; Step S4, realizing enhanced ADRC for the permanent magnet linear motor based on the final sliding mode control law and the AESO. This invention effectively solves the problems of high-speed tracking performance and anti-interference performance, achieving two-degree-of-freedom control of speed loop speed and disturbance rejection.

The utility model discloses a permanent magnet linear motor single axle module, it includes U-shaped guide rail, the upper surface fixed connection of U-shaped guide rail has stator, the upper surface fixed connection of U-shaped guide rail has slide, the outer surface sliding connection of slide has connecting plate, the lower surface fixed connection of connecting plate has permanent magnet mover, the inner surface sliding connection of U-shaped guide rail has buffer block. Through setting buffer block, limit board, gyro wheel, spring and box cover, can weaken the impact force when hitting U-shaped guide rail when connecting plate moving position is too big, thereby the service life of promotion device, through setting first threaded hole, bolt and second threaded hole, can open box cover, thereby convenient for the replacement of spring, and then ensure that the buffer effect of module is in the best state all the time, and through setting limit ring, first limit half ring and second limit half ring, can be positioned to the position of spring, thereby ensuring the stability of spring.

The invention discloses a permanent magnet linear motor sensorless control method combining a super-spiral sliding mode observer and a double-second-order generalized integrator, and belongs to the field of linear permanent magnet vernier motor control. Comprising the following steps that the current and the voltage of the linear motor are calculated by introducing a super-spiral sliding mode observer and a double-second-order generalized integrator, then the obtained estimated counter electromotive force serves as the input of a phase-locked loop, finally the estimated rotor position and the estimated speed of the motor can be obtained, and the control method has the advantages of being high in precision, high in thrust density and the like. According to the method, the chattering problem of the estimated counter electromotive force is reduced by introducing the super-spiral sliding-mode observer, then the estimated counter electromotive force is filtered by adopting the bisecond-order generalized integrator for harmonic disturbance caused by the positioning force of the permanent magnet vernier linear motor, the estimation precision is effectively improved, and the control performance is improved. Experimental results show that the control method can realize high-precision operation of the permanent magnet vernier linear motor under steady-state and variable-speed conditions.

The invention discloses a two-way output cylindrical permanent magnet linear motor and a control method thereof, relates to the technical field of linear motors, is suitable for scenes with long diameter, short length, short stroke, large thrust and fast motor motion frequency, and comprises a pair of symmetrically arranged cylindrical permanent magnet linear motors with the same structure, each cylindrical permanent magnet linear motor comprises a rotor, a front end cover and a rear end cover, the front end cover and the rear end cover are arranged at the two ends of the rotor, a stator assembly and a winding assembly are arranged on the periphery of the rotor, and a grating ruler sensor reading head is fixedly arranged on the front end cover. The two-way synchronous reciprocating linear motor is suitable for two-way synchronous driving scenes with the large diameter, the short length, the short stroke and the high motion frequency, and on the premise that the axial length is limited, high-frequency two-way synchronous reciprocating linear motion can still be achieved.

The invention relates to a linear motor, which comprises a stator group and a rotor group, the stator group is provided with stator permanent magnets, the rotor group is provided with rotor permanent magnets, an air gap is arranged between the stator group and the rotor group, and the rotor group is of a consequent pole structure in which the rotor permanent magnets and rotor magnetizers are alternately arranged. Therefore, the stator group and the rotor group are both provided with permanent magnets, and the rotor group adopts a consequent pole structure, so that air gap magnetic conductance harmonic waves are generated to serve as modulation blocks to modulate a stator permanent magnetic field. Compared with a single-side permanent magnet linear motor, the space utilization rate of the stator set and the rotor set is higher, thrust is generated through the bilateral magnetic field modulation effect, the thrust is equivalent to superposition of a stator permanent magnet linear motor and a rotor permanent magnet linear motor, and the advantage of high thrust is achieved.

The application provides a mover assembly and a permanent magnet linear motor, the mover assembly has a length direction, a width direction and a height direction which are perpendicular to each other, the mover assembly comprises a plurality of movers which are arranged side by side along the length direction, windings are arranged on the movers, and the thickness direction of the mover is the same as the length direction; in the width direction, the thickness of the middle part of the mover is greater than the thickness of the two ends of the mover. That is, the mover in the scheme is not a conventional structure with a constant thickness, but a structure with a thick middle part and thin two ends. The mover can also be understood as a structure with multiple unequal thicknesses which are stacked together. In this way, the positioning force of each segment structure is at a different phase, compared with the conventional structure with a constant thickness, the wave peaks and wave troughs generated by each segment structure are reduced after superposition, thereby reducing the positioning force. When the mover assembly is applied to the permanent magnet linear motor, the positioning force of the permanent magnet linear motor is reduced, and the performance of the permanent magnet linear motor is improved.

This invention discloses a design method and a permanent magnet linear motor, relating to the field of motors. According to a preset motor unit selection strategy, N motor sub-units are selected, satisfying preset pole and slot selection conditions and arranged sequentially. The total number of stator slots in the N motor sub-units is equal to the total number of permanent magnets to ensure the same pole and slot characteristics of the motor. Based on a combined cogging force and a preset size correction strategy, the first dimension of the initial rectangular teeth of the first motor sub-unit and the second dimension of the final rectangular teeth of the last motor sub-unit are corrected to ensure that the combined edge force and combined cogging force meet preset cancellation conditions within the allowable design error range. This achieves phase superposition and amplitude cancellation between the combined cogging force and the combined edge force, effectively weakening the positioning force. This results in a low-positioning-force, same-pole, same-slot permanent magnet linear motor, which is more conducive to practical production applications.

The application discloses a low-tooth-groove primary permanent magnet linear motor and belongs to the technical field of motors. The application aims at the problem of high tooth groove force of the primary permanent magnet linear motor. The primary permanent magnet linear motor comprises a primary and a secondary, the primary comprises a primary iron core, an armature winding and permanent magnets, the armature winding is wound on the armature tooth of the primary iron core, the armature winding is composed of concentrated windings, the tooth top of the armature tooth is processed with a plurality of unequal-width split teeth to form an odd number of split tooth grooves, the permanent magnets are embedded in the split tooth grooves, the permanent magnet in the middle split tooth groove is higher than the permanent magnets in the split tooth grooves on the two sides, and the plurality of permanent magnets form a non-uniform air gap magnetic field between the primary and the secondary. The application is suitable for high-precision direct drive motion control occasions.

The application provides a kind of annular winding polyhedral linear-rotary motor, outside is the mover of linear motor unit, middle is the stator of linear motor unit, magnetic ring, the stator of rotary motor unit in turn, inside is the mover of rotary motor unit, linear motor unit and rotary motor unit motion decoupling are realized by above-mentioned structure;And linear power generation unit is same direction annular winding-polyhedral permanent magnet linear motor structure, permanent magnet is sheet-like parallel magnetization, simple assembly and low cost, and eliminate the influence of segmented magnetization on motor performance.When applied to the field of power generation, the setting of rotary power generation unit inside and linear power generation unit outside is also conducive to power balance, and lays the foundation for complementary control of wind and wave combined power generation after on-grid.

The transverse flux linear motor with Y type core and Halbach array belongs to the field of permanent magnet linear motor design, and aims to solve the problems of low utilization rate of permanent magnet, large magnetic flux leakage and insufficient power density of the traditional transverse flux linear motor. The transverse flux linear motor comprises a primary part and a secondary part. The primary part comprises a plurality of stator cores arranged in sequence along the axial direction, each stator core is provided with three circumferentially distributed armature modules, each armature module comprises long and short armature teeth and armature windings, the long and short teeth are designed with inclined air gaps and magnetic pole shoes, and the secondary part comprises Y type secondary pole cores and Halbach permanent magnet arrays on the surfaces of the Y type secondary pole cores, the permanent magnet arrays are circumferentially divided into three regions, and the three regions correspond to the three-phase armature modules of the primary part respectively, each region of permanent magnet is composed of an N pole and an S pole staggered in the axial direction, and adjacent regions are staggered in the axial direction.

The application discloses a bidirectional force output cylindrical permanent magnet linear motor and a control method thereof, relates to the technical field of linear motors, and is suitable for a scenario with long diameter, short length, short stroke, large thrust and fast motor movement frequency. The bidirectional force output cylindrical permanent magnet linear motor comprises a pair of cylindrical permanent magnet linear motors which are the same in structure and are symmetrically arranged. Each cylindrical permanent magnet linear motor comprises a mover, a front end cover and a rear end cover arranged at two ends of the mover, a stator assembly and a winding assembly are arranged on the periphery of the mover, a grating ruler sensor reading head is fixedly arranged on the front end cover, and a grating ruler sensor corresponding to the position of the grating ruler sensor reading head is arranged on the shaft of the mover. The application is suitable for a bidirectional synchronous driving scenario with large diameter, short length, short stroke and high movement frequency. Under the premise of limiting the axial length, bidirectional synchronous reciprocating linear motion can still be realized at a high frequency.

The application discloses a short secondary moving-magnetic type permanent magnet linear motor, which comprises a coil framework, an armature coil and a magnetic conducting core, the three components form a unit module, a plurality of unit modules are sequentially arranged and connected to form a primary assembly, slide rods are arranged on both sides of the primary assembly, a secondary assembly seat is arranged on the primary assembly and the slide rods, the secondary assembly is internally provided with double-side secondary assemblies and a position detection magnetic steel assembly, sliding shaft sleeves are further arranged at both ends of the secondary assembly seat, and left and right mounting seats are arranged at the left and right ends of the slide rods respectively; the scheme cancels the design of a drag chain, is simple in structure, smaller in installation space and high in transmission efficiency; no yoke part exists in the primary assembly, the coil arrangement space is enlarged, and the overall weight is reduced; the primary assembly is arranged in the middle of the double-side secondary assemblies, so that the double-side magnetic pulling force borne by the double-side secondary assemblies is balanced, the loss and noise caused by vibration and abrasion are effectively reduced, and the motor performance is improved.

The invention belongs to the field of linear motor fault simulation, and particularly relates to a permanent magnet linear motor demagnetization fault simulation device which comprises a base and a combined secondary structure detachably arranged on the base. The combined secondary structure comprises an adjustable permanent magnet array and a plurality of limiting blocks, the adjustable permanent magnet array comprises a plurality of sub permanent magnets which are arranged at intervals, and the sub permanent magnets are attached to the back iron; at least one limiting block is arranged between the back irons of two adjacent sub permanent magnets, and the back irons are next to the limiting blocks; the sub permanent magnets are normal permanent magnets or fault permanent magnets; by flexibly adjusting the adjustable permanent magnet array and the limiting block, demagnetization simulation of the permanent magnet in multiple scenes is realized, and the experiment efficiency is greatly improved under the condition that the experiment cost is reduced.

The application discloses a suspended rail car based on a transverse magnetic flux permanent magnet linear motor, which comprises a frame, a transverse magnetic flux permanent magnet linear motor unit and a control system; the transverse magnetic flux permanent magnet linear motor unit comprises a main load-bearing structure, a first mover iron core, a second mover iron core, a winding, a connecting piece and a plurality of permanent magnets; the first mover iron core is in a U shape, connecting heads are arranged at two end portions, and the connecting heads are respectively clamped in two U-shaped long grooves; the permanent magnets are uniformly distributed in two second gaps; the winding is horizontally sleeved on the first mover iron core; the winding, the first mover iron core and the second mover iron core form a closed magnetic circuit; and the main load-bearing structure is horizontally located in a space surrounded by the first mover iron core and the two U-shaped long grooves and is connected with the second mover iron core through the connecting piece. The application not only can improve the carrying efficiency and precision, but also can reduce the energy consumption and maintenance cost, and is very important for meeting the needs of modern industry for efficient, reliable and economical carrying equipment.