136 results about "Motor design" patented technology

The invention discloses a motor rotor core and a manufacturing method thereof, and belongs to the technical field of motor design and manufacturing. The rotor iron core comprises an iron core main body formed by laminating a plurality of punching sheets, and self-adhesive sheet end plates and arc-shaped pressing rings which are arranged at the two ends of the iron core main body. The self-adhesive sheet end plate is formed into a whole by heating, pressurizing and curing a self-adhesive sheet coated with epoxy resin or acrylic resin; the arc-shaped pressing ring is provided with a cambered surface structure, so that synchronous pressing in the axial direction and the radial direction can be achieved. And the iron core main body adopts a transposition lamination process, so that burrs of the punching sheet are uniformly distributed. Through chemical bonding of the end plates of the self-adhesive sheets, mechanical wedge-caulking of the arc-shaped pressing rings and error homogenization of transposition lamination, and through combination with the double-end tensioning screw subjected to insulation treatment, the problems that a traditional rotor iron core end punching sheet is prone to loosening, stress concentration and large eddy-current loss are caused by burrs, dynamic balance precision is poor and the like are effectively solved, and the service life of the rotor iron core end punching sheet is prolonged. And the structural rigidity, the operation stability and the motor efficiency of the rotor iron core are obviously improved.

The invention discloses a pumping unit disc type permanent magnet motor multi-objective parameter optimization method, which relates to the technical field of motor design and optimization, and comprises the following steps: pre-establishing a multi-physical field coupling simulation model, constructing a disc type permanent magnet motor electromagnetic and thermal performance simulation model based on Motor-CAD and Maxwell software, and completing no-load, load and thermal performance tests of the motor. According to the method, the multi-physical field coupling simulation model is established in advance, so that comprehensive coupling analysis of electromagnetic and thermal performance of the disc type permanent magnet motor is realized, and high-precision data support is provided for multi-objective optimization; key structure parameters such as air gap length, slot opening width and the like are scientifically selected as optimization objects, maximization of motor efficiency and minimization of cogging torque are taken as core targets, and meanwhile, constraint requirements of output torque, back electromotive force and structure size are strictly adherent to each other, so that the pain point that multiple performances are difficult to consider at the same time in traditional optimization is effectively solved.

The invention discloses a range-extended electric aircraft power distribution system and a construction method, and the system constructs a graded power distribution network comprising four stages of protection devices through distributing different windings of a multi-winding motor to different load modules and combining the design of dual power sources of a battery pack and a range extender; by means of the design, independent power supply and fault isolation of winding power are achieved, and it is ensured that power is not completely lost under a single fault; and the dual power sources are backups for each other through an interconnection line, so that the power supply reliability is improved, and the power distribution at different flight stages is optimized. By adopting the technical means of multi-winding motor design and four-stage grading circuit protection, the technical problem that the safety and reliability of a power system of an electric aircraft are insufficient due to a single power supply or a motor fault is solved.

The invention discloses a performance analysis method for a topological structure of a multi-topology axial flux permanent magnet motor based on electromagnetic-thermal coupling, and the method comprises the steps: firstly building three-dimensional electromagnetic finite element models of four typical axial flux permanent magnet motors, and calculating electromagnetic loss including iron core loss, copper loss and permanent magnet eddy current loss; importing the loss data into a three-dimensional fluid-thermal coupling model, and simulating the temperature rise of the motor under a natural cooling condition; the performance of the motor is subjected to double constraints of winding insulation and irreversible demagnetization temperature of a permanent magnet, so that the maximum current density of safe steady-state operation of the motor is determined and identified by adopting an iterative electromagnetic-thermal coupling analysis method, and the maximum torque density of each topological structure is evaluated under thermal constraints. The electromagnetic performance and the thermal constraint can be coupled, so that the optimal performance achieved by different axial magnetic flux permanent magnet motor topological structures can be compared, and the problem of inaccurate performance evaluation caused by neglect of the thermal constraint in the existing motor design is solved.

The invention discloses a motor multi-objective optimization design method and system based on a Kriging agent model. Comprising the following steps: constructing an initial data set through an experimental design method and finite element simulation calculation, so as to train an initial Kriging agent model which takes a motor design variable combination as an input variable and takes motor performance as an output response; the proxy model serves as a target function, a multi-target optimization problem is solved, the proxy model is updated, and an updating strategy is as follows: after each round of optimization is finished, a high-error solution in a current Pareto solution set is screened based on a Kriging model prediction mean square error, a finite element response of the high-error solution is obtained and supplemented to a data set, and the proxy model is updated and trained; and repeating the process until the optimization result converges. According to the method, high-uncertainty region samples are selectively supplemented, the calculation cost is remarkably reduced while the local prediction precision of the proxy model at the Pareto leading edge is improved, and the method has good practicability and economical efficiency.

The application discloses a kind of construction methods of triangle permanent magnet magnetic field distribution model, the method is: the three-dimensional molecular ring current model of triangle permanent magnet is converted into two-dimensional analytical model, permanent magnet is uniformly magnetized, its body current is zero, the magnetic field at any field point in space is only generated by the closed current loop of permanent magnet surface, based on ampere molecular ring current hypothesis and molecular ring current model, application Biot-Savart law and magnetic field superposition principle, construct the external space magnetic field distribution model of triangle permanent magnet, the external space magnetic field distribution model of this two-dimensional permanent magnet array considers the distribution waveform and amplitude of the normal component of its external space magnetic flux density, optimize the permanent magnet monomer gap value of two-dimensional rectangular permanent magnet array, and the reliability and effectiveness of analytical formula are verified using finite element analysis results, and the distribution characteristics that external space magnetic flux density of triangle permanent magnet varies with this important motor design parameter, space air gap value are given.

The invention relates to the technical field of motor optimization, and discloses a multi-physics field collaborative optimization method and system for a pure electric vehicle motor based on a particle swarm, and the method comprises the steps: building a multi-physics field coupling model of the pure electric vehicle motor; initializing parameters and a particle swarm of the improved multi-target particle swarm optimization algorithm, wherein each particle represents a group of motor design variables; calling a multi-physics field coupling model to simulate each particle, and calculating an electromagnetic performance index, a thermal performance index and a structural performance index; performing non-dominated sorting on each particle according to the electromagnetic performance index, the thermal performance index and the structural performance index, and updating a Pareto solution set; updating particle positions and speeds based on a Pareto solution set, and generating a new generation of particle swarms; and judging whether the updated Pareto solution set meets a convergence condition or not, and if yes, outputting the Pareto solution set as an optimization design scheme. According to the scheme, the comprehensive reliability of the motor can be improved, and an optimal design scheme considering multi-target performance is provided for the high-power-density electric vehicle motor.

The invention relates to a low-energy-consumption humanoid robot knee axial magnetic flux motor topological structure and an optimization method, and relates to the technical field of motor design and robots, and the low-energy-consumption humanoid robot knee axial magnetic flux motor topological structure comprises a stator structure, a rotor structure and an axial gap adjusting mechanism; the stator structure comprises a modularized stator iron core formed by laminating a plurality of fan-shaped silicon steel sheets, a centralized stator winding wound on the stator iron core, and heat dissipation grooves arranged on the stator iron core. The modularized stator iron core is used for forming a magnetic circuit base of the stator and is convenient to manufacture and install. According to the low-energy-consumption knee axial magnetic flux motor topological structure of the humanoid robot and the optimization method, through the unique stator and rotor structural design and the combination of the modular stator iron core and the centralized winding, the power density of the motor is effectively improved, the manufacturing complexity is reduced, the magnetic field intensity is enhanced, and the magnetic circuit loss is reduced; and the overall performance and reliability of the motor are obviously improved.

The application discloses a pole slot determination method and system of an integrated winding bearingless permanent magnet motor, and relates to the technical field of motor design. The method comprises the following steps: determining the number of unit motors of the bearingless permanent magnet motor to be designed relative to the torque winding based on the principle of integrated winding suspension force generation; determining the number of slots of the bearingless permanent magnet motor to be designed according to the number of pole pairs and the number of unit motors of the rotor based on the theory of alternating current winding; and obtaining the bearingless permanent magnet motor according to the number of pole pairs and the number of slots of the rotor. The application can realize the design of the integrated winding bearingless permanent magnet motor, so that a miniaturized motor structure is obtained.

The invention relates to the technical field of motor design and manufacturing, in particular to a design method of a motor flat copper wire stator winding. Comprising the following steps: constructing a basic data source layer, and integrating stator slot space data, electromagnetic boundary data and wire physical parameters; a topology generation layer is constructed, winding space distribution and an end connection path are planned, a transposition connection module plans the inter-layer connection relation of wires in a groove, and an end topology module plans the spatial layout of end welding points; constructing a dynamic adjustment layer, establishing a three-dimensional space matrix by taking the end surface of the stator core as a reference, setting a step dislocation mechanism comprising a step dislocation amount and a design tolerance, and adjusting the axial height distribution of end welding points; and generating and outputting a three-dimensional design model or manufacturing parameters of the stator winding based on an adjustment result, and realizing unification of electromagnetic optimization, end space avoidance and welding accessibility.

The invention relates to the technical field of motor design and manufacturing, in particular to a motor shell and rotor integrated stamping manufacturing method and a motor. The invention provides a motor casing and rotor integrated stamping manufacturing method, which comprises the following steps of: performing primary stamping on the same strip by using the same set of composite stamping die so as to synchronously stamp an annular casing lamination and a rotor lamination positioned in the casing lamination; separating the shell lamination from the rotor lamination; laminating a plurality of casing laminations to form a casing part; laminating a plurality of rotor laminations to form a rotor portion; the rotor portion is fitted to the inside of the housing portion. The scheme has the advantages that the mold development cost is reduced, the material utilization rate is improved, and eddy current heating is reduced.

The application discloses a claw pole stepping motor with an integrated stator core, and belongs to the field of permanent magnet stepping motor design. The application is used for solving the problem that the equivalent air gap of the main magnetic circuit is increased and the torque density is decreased due to the split stator structure of the micro claw pole stepping motor. The application comprises a stator and a rotor. The stator adopts an integrated stator core which is integrally bent and formed from a single plate material, and sequentially forms an inner claw pole, a stator tooth bottom, a stator wall, a stator tooth top and an outer claw pole from inside to outside along the radial direction. The stator tooth bottom is provided with a positioning hole for inserting and fixing a coil framework. The coil framework is provided with a wire outlet structure, so that the coil can be led out from the gap of the core. The rotor comprises a rotating shaft and a permanent magnet. The integrated stator core design eliminates the assembly joint of the split structure, effectively reduces the equivalent air gap, reduces the magnetic flux leakage, and thus significantly improves the torque density and electromagnetic load of the motor.

The invention belongs to the related technical field of motor design and optimization, and particularly relates to a construction method of a motor multi-objective optimization design model, which comprises the following steps: training a plurality of proxy models; calculating and fusing specific fitting performance indexes of each model for various motor performances under the sample set, and taking the specific fitting performance indexes as the specific fitting performance indexes of the model to obtain a plurality of fitting performance indexes; reciprocals of various fitting performance indexes of each model are taken to be unified as forward indexes, normalization is carried out on the same forward indexes of all the models, and motor fitting effect evaluation of all the models is achieved; calculating the confidence coefficient weight of each fitting performance index of each model and averaging to obtain the credibility of the model; and the multiple models and the fusion unit form a motor multi-target optimization design model, and the fusion unit is used for taking the credibility of each model as a weight, and performing weighted summation on motor performance fitting results of the multiple models. According to the invention, coordinated improvement of model prediction precision and motor design efficiency can be realized.

The utility model belongs to the technical field of motor manufacturing, and particularly discloses a motor coil shaping tool which comprises a pressing plate, a gasket, a positioning column, a positioning block and a positioning nail. According to the shaping tool for the motor coil, the height of the motor coil is adjusted through the pressing plate, the radial size of the motor coil is adjusted through the positioning block, and damage possibly caused to an enameled wire in the shaping process of the motor coil is avoided. Besides, the motor coil shaping tool can meet the manufacturing requirements of various model machines, especially for non-standard and high-slot-fullness-rate motor design schemes, can effectively improve the yield of the motor design schemes, is simple to operate, and can reduce the manual difficulty of coil shaping in the model machine manufacturing process, thereby reducing the model machine manufacturing time and improving the production efficiency. The qualified rate of finished products of the manufactured prototype can be guaranteed, and actual reference can be provided for follow-up batch production of motors.

This invention belongs to the field of electrical digital data processing technology, specifically relating to a multi-objective optimization method for improving motor torque performance. The method includes: establishing a parameterized model of the motor; extracting geometric harmonic prior features based on the harmonic analysis principle of the motor's air gap magnetic flux density, and using these as a screening criterion to obtain an initial high-quality sample set; constructing a Kriging surrogate model reflecting the mapping relationship between design variables and performance response, introducing an energy efficiency boundary risk function during the construction process; based on the Kriging surrogate model, using a multi-objective optimization algorithm to search for a Pareto front solution set, selecting potential sample points from the Pareto front solution set for simulation verification, and then adaptively updating the Kriging surrogate model until the stopping criterion is met, at which point the target motor design parameters are output. This invention can achieve accurate optimization of electromagnetic parameters by screening samples through geometric harmonic prior features and utilizing the energy efficiency boundary risk function.

This invention relates to the field of motor design and manufacturing technology, specifically a design method for flat copper wire stator windings of motors. The method includes: constructing a basic data source layer to integrate stator slot space data, electromagnetic boundary data, and conductor physical parameters; constructing a topology generation layer to plan the winding spatial distribution and end connection paths, wherein a transposition connection module plans the inter-layer connection relationship of conductors within the slot, and an end topology module plans the spatial layout of end welding points; constructing a dynamic adjustment layer to establish a three-dimensional spatial matrix based on the stator core end face, setting a stepped misalignment mechanism including stepped misalignment amount and design tolerance, and adjusting the axial height distribution of end welding points; and generating and outputting a three-dimensional design model or manufacturing parameters of the stator winding based on the adjustment results, achieving a unified approach to electromagnetic optimization, end space avoidance, and welding accessibility.

This invention discloses an electric motor and a household appliance, belonging to the field of electric motor technology. The motor includes a stator and a rotor. The stator includes a stator core, which includes a yoke and multiple teeth. The teeth are arranged at intervals along the circumference of the stator core on the inner side of the yoke, defining a rotor hole. The rotor, located within the rotor hole, includes a rotor core and multiple magnets. The rotor core has multiple magnet slots, which are arranged at intervals along the circumference of the rotor core. Each magnet is installed in a corresponding magnet slot. The minimum inner diameter of the stator core is D1, the maximum radial dimension of the magnet along the rotor core is Lm, the maximum dimension along the magnetization direction is Hm, and the circumference is π, satisfying: 16 ≤ π*(D1-2*Lm) / Hm ≤ 19. The motor designed according to the above constraints has a high magnetic load. For the same volume, the motor of this invention effectively improves operating efficiency compared to existing motors.

This invention discloses an improved integrated winding structure for a bearingless electrically excited doubly salient pole motor, relating to the field of bearingless motor technology. It integrates the levitation winding and excitation winding of a traditional bearingless electrically excited doubly salient pole motor into an integrated levitation winding. A control method is provided to enable the integrated winding configuration of the bearingless electrically excited doubly salient pole motor for power generation and stable levitation. This control method includes a displacement control module, a levitation current calculation module, and a levitation current control module. Stable rotor levitation can be achieved by controlling the levitation winding current. This scheme optimizes the winding arrangement and achieves mutual scheduling of power generation and levitation capabilities through equivalent control. Compared to traditional bearingless doubly salient pole motors, the integrated winding configuration bearingless electrically excited doubly salient pole motor designed in this invention improves the utilization rate of slot space, expands the working range of the bearingless doubly salient pole motor, and its overall operating state is more flexible.

The utility model discloses a kind of composite material forming is perfused epoxy resin system, belong to composite material forming technical field, the composite material forming is perfused epoxy resin system including reaction kettle, intermittent adjusting mechanism and suction bubble subassembly;Intermittent adjusting mechanism includes support, first motor, disc, male shaft, moving plate, arc groove and stirring device;Suction bubble subassembly includes multiple movable grooves, floating ring, lightweight spring, suction bubble plate, suction bubble mouth, air duct and suction bubble machine.The composite material forming is perfused epoxy resin system by intermittent stirring to avoid local overheating, maintain resin low viscosity state;By double-motor design realizes motion and stirring decoupling, accurately controls reaction condition;Self-adapting suction bubble mouth is close to liquid level, in combination with negative pressure suction, significantly reduce micro-bubble residue, improve composite material compactness, solve the problem, such as uneven mixing, bubble residue in traditional epoxy resin perfusion, significantly improve composite material forming efficiency and product performance.

The invention relates to the field of motor design and simulation analysis, and discloses a double-shaft excitation synchronous generator short circuit fault magnetic field intensity simulation analysis method, which comprises the following steps: S1, establishing and correcting a high-protection simulation model; s101, carrying out preliminary modeling; s102, correcting and calibrating the model; s2, setting a short-circuit fault simulation working condition; s3, running simulation and performing magnetic field intensity comparative analysis; s4, collaborative optimization feedback is carried out; s201, building an external circuit; s202, simulating a short circuit switch; s203, setting a fault time sequence; and S204, excitation current is set. In the step S1, a mode of manufacturing a physical model machine and acquiring actual measurement data is adopted to ensure the establishment of a high-fidelity simulation model, and in the step S3, the magnetic field intensity cloud atlas and the magnetic induction line distribution map under the three key states before, during and after the short circuit fault are extracted and compared and analyzed to obtain the high-fidelity simulation model. And the complex electromagnetic dynamic process in the generator during the short-circuit fault period can be visually and deeply revealed.

The present application relates to the technical field of motor design, and particularly relates to a permanent magnet motor iron core size optimization method based on a particle swarm algorithm. The method comprises the following steps: selecting geometric parameters such as stator tooth width to construct particles and initializing a particle swarm; in each round of iteration, an agent model constructed in advance is used to predict the electromagnetic performance index of the particles and to calculate the fitness value; a gradient vector is constructed by perturbing the global optimal solution, and the maximum value of the cosine similarity of the gradient vectors between geometric parameters is calculated as the correlation attribute value; the speed update logic is dynamically corrected in response to the correlation attribute value: an inertia weight inversely proportional to the correlation attribute value is applied to the strongly coupled parameters to suppress oscillation, and an inertia weight proportional to the gradient module length is applied to the weakly coupled parameters to accelerate convergence; until the convergence condition is met, the optimal iron core size is output. The present application effectively solves the oscillation problem caused by strongly coupled parameters, and significantly improves the optimization accuracy and efficiency.

The application discloses a unit cascade type motor speed regulation control compensation method and system, relates to the motor control technical field, and solves the technical problems that parameter dynamic changes caused by temperature rise, magnetic saturation or load mutation during motor operation, real-time parameter identification is not performed, magnetic resistance torque compensation error is relatively large, and motor speed regulation control compensation accuracy is influenced; the difference value of magnetic resistance torque and Ld-Lq is strongly related, and the difference value of Ld-Lq is jointly influenced by motor design and working conditions. RLS can accurately quantify the nonlinear part of magnetic resistance torque by online identification of the difference value of Ld-Lq, and avoids the limitations of traditional table lookup method or offline calibration. Cross coupling exists in the d-q axis current loop, RLS can decouple the mutual influence between parameters by simultaneously identifying inductance parameters, and the current loop bandwidth is improved; meanwhile, the inductance value drift caused by motor temperature rise is adjusted by continuously monitoring the inductance change, and torque attenuation caused by temperature rise is avoided.

The application discloses a kind of three-three-phase split tooth permanent magnet vernier motor design methods, comprising: the outer rotor of permanent magnet (2) and rotor core, permanent magnet (2) simultaneously adopt axial and circumferential sectional design, surface is pasted in rotor core inside, magnetization direction is radial magnetization and N pole and S pole alternate arrangement;Stator (4) adopts split tooth structure, and interdental placement armature winding (3). Armature winding (3) adopts three-three-phase fractional slot concentrated winding mode. The stator modulation pole of the motor adopts multiple working wave design, more working permeance and magnetic flux density harmonic can be introduced, so as to improve the back electromotive force and output torque of motor;Permanent magnet (2) simultaneously adopt axial and circumferential sectional design, can effectively reduce permanent magnet eddy current loss, and facilitate installation manufacturing;Armature winding (3) adopts three-three-phase connection mode, can increase the torque output of motor and reduce the torque ripple of motor, and the increase of space phase number can make motor have good fault-tolerant operation potential.

This invention provides a dual-layer hybrid structure hybrid magnetic flux-modulated motor, relating to the field of motor design and manufacturing technology. It includes a stator and a rotor disposed inside the stator and rotating relative to it. The stator has an armature winding, and an air gap exists between the rotor and stator. Multiple magnetic pole assemblies are evenly distributed circumferentially inside the rotor. Each magnetic pole assembly includes a first permanent magnet layer and a second permanent magnet layer. The first permanent magnet layer includes a first high-coercivity permanent magnet, and the second permanent magnet layer includes a second high-coercivity permanent magnet and a low-coercivity permanent magnet. The first high-coercivity permanent magnet and the low-coercivity permanent magnet in the second permanent magnet layer form a series structure, while the second high-coercivity permanent magnet and the low-coercivity permanent magnet form a parallel magnetic circuit structure. This invention organically combines "controllable leakage flux" and "memory magnetic flux modulation" through a dual-layer hybrid magnetic circuit structure, enabling the motor to simultaneously possess torque output capability under high load conditions and field weakening speed-enhancing capability under high speed conditions.

The invention belongs to the technical field of electric drive axles, and relates to a three-gear electric drive axle framework and a gear shifting control strategy. The three-gear electric drive axle framework adopts a motor parallel shaft type, three parallel shaft type, graded gear transmission, an electric control double-electric gear shifting execution mechanism, a three-gear gearbox and an axle body framework; motor power is input to the three-gear gearbox through the first shaft, the differential mechanism is driven by the output gear, and the power is transmitted to the rear axle half shaft. According to the technical scheme, through the three-gear speed ratio design, the problem that when a single-gear or two-gear electric drive axle is at a high speed, a motor does not run in a high-efficiency area is solved; through the three-gear one-stage transmission design, the problem that the high-gear efficiency of a multi-gear electric drive axle is low is solved; the idle gear 4 + 3 gear design, the 1 / 2 gear switching through a second coupling 18 and the double-gear-shifting motor design are combined, the simultaneous null picking function, the 1 / 2 gear pre-shifting function during gear reduction and the speed regulation function during gear upshift and 1 / 2 gear shifting are combined, the direct gear shifting strategy without motor speed regulation is adopted, the problem of gear shifting power interruption of a multi-gear electric drive axle is solved, and gear shifting without sensing of power loss is achieved.

The invention discloses a method for designing an axial-radial magnetic flux segmented rotor switch reluctance motor, which comprises the following specific steps of: firstly, determining basic rated structure parameters of the motor; matching and integrating the key structure parameters of the motor according to the composite requirements of the axial and radial segmented rotors and the composite requirements of the axial and radial stators and the segmented rotors, and determining the values of the key structure parameters by comparing the performance difference of the motor under the matching of different slot poles. According to the design method, the problems of coupling, matching and integration of axial and radial magnetic fluxes are solved, a reasonable decision can be made in the early stage of developing the axial and radial magnetic flux segmented rotor switched reluctance motor, and the working efficiency in the design stage of the motor is effectively improved.

The utility model discloses a brush motor relates to motor design field, including motor shell and motor cover, and the rotor is rotationally fitted and installed in motor shell, the middle part of motor cover is shaped with carbon brush slot, and the bottom side of motor cover is provided with bottom cover, and carbon brush slot is set up with bottom cover covering, the bottom side of motor cover is shaped with four locating blocks, and the outside of bottom cover is shaped with four first air clearance groove, and locating block one one gap cooperation is installed in first air clearance groove, the middle part of bottom cover is shaped with first through -hole, and the middle part of motor shell upper end is shaped with second through -hole, and the rotor rotationally fitted and installed between first through -hole and second through -hole, the utility model discloses setting up carbon brush slot on motor cover, can adjust the assembly position of carbon brush through the mode of separately disassembling bottom cover after assembling, and then let motor contact bad failure can be quickly repaired and recovered, need not to open whole motor, convenient and fast, can also be convenient for the assembly production of motor.

The invention relates to the technical field of three-dimensional simulation, in particular to a modeling simulation method of a servo motor. The method comprises the following steps: initializing control parameters of a servo motor; the control parameters are used for executing control direction verification, and encoder feedback signals are recorded; determining a test control direction according to the encoder feedback signal and the control parameter; servo motor design data are obtained, and a three-dimensional simulation model is constructed according to the servo motor design data; inputting a test control direction into the three-dimensional simulation model, and outputting a simulation signal of the servo motor; calculating the oscillation amplitude of the rotor according to the simulation signal; and if the oscillation amplitude of the rotor exceeds the preset oscillation amplitude, correcting the signal phase of the simulation signal, and outputting a corrected simulation signal. Modeling and simulation are carried out on the servo motor based on the three-dimensional simulation technology, the operation characteristics of the servo motor are accurately simulated, and the control precision and the test efficiency are improved through oscillation amplitude monitoring and signal correction.

The utility model discloses a kind of inner rotor waterproof brushless motor structure, it is related to motor design field, including motor shell, fixed mounting stator in motor shell, the middle part of stator is installed with rotor;Stator includes drive plate, iron core and copper wire winding, iron core is fixedly installed in motor shell, the inside of iron core is profiled with several wire grooves, copper wire winding is wound and installed in wire groove;Waterproof adhesive is filled between motor shell and stator;The middle part of iron core is profiled with rotating hole, the outside of rotor is fixedly installed with permanent magnet ring;Compared with prior art, the utility model mainly is filled with waterproof adhesive, waterproof adhesive can seal the relevant structure of stator after drying, realize the sufficient waterproof of stator, the magnetic field generated when copper wire winding is electrified can drive permanent magnet ring to high-speed operation, and there is no any electronic device on rotor, let brushless motor can be soaked in water and use, improve the waterproof performance of brushless motor, reduce the power loss of brushless motor.

The application provides a kind of equivalent model establishing method suitable for permanent magnet synchronous motor, the influence of mechanical loss on model is considered in modeling, equivalent resistance R m&co The sum of mechanical loss and core loss when permanent magnet synchronous motor is in no-load operation is represented, and equivalent resistance R ci The core loss caused by winding current when permanent magnet synchronous motor is in load operation is represented, which overcomes the drawbacks caused by ignoring mechanical loss and magnetic saturation effect in existing permanent magnet synchronous motor modeling. When the application is applied in actual modeling, equivalent resistance R m&co and R ci Not only can be set to a constant, but also can set equivalent resistance R m&co As a function of motor speed, or set equivalent resistance R ci As a function of motor speed and input current, so that suitable model can be selected more flexibly according to the actual needs in motor design, optimization and control, and accurate and comprehensive analysis can be realized.