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1656 results about "Stator coil" patented technology

Motor, compressor, and air conditioner

To provide a technique for suppressing influences caused by the presence of a space communicating in a radial direction in a protruding portion, which protrudes from a stator core, in a stator coil.SOLUTION: A compressor 100 comprises a compression mechanism part 120 and a motor 200 which are stored in a sealed container 110. A stator 300 of the motor 200 includes a stator coil 340 wound around a plurality of teeth of a stator core 310. The stator coil 340 includes a first protruding portion 340A and a second protruding portion 340B protruding from the stator core 310 to a first side and a second side in an axial direction. At least outside of the first protruding portion 340A, a first enclosure wall 350 is provided which extends without a gap in the axial direction and a circumferential direction.SELECTED DRAWING: Figure 1
Owner:AICHI ELECTRIC CO LTD

In-vehicle charging device

An in-vehicle charging device that includes a first circuit configured to include the excitation circuit and convert power between AC power on an external AC power supply side and first DC power; and a second circuit configured to include the inverter, the multi-phase stator coils, and an output capacitor, and generate second DC power for charging the DC power supply from the first DC power, wherein the output capacitor is connected between the neutral point of the multi-phase stator coils and a DC negative electrode.
Owner:AISIN CORP

Motor assembling equipment

The utility model belongs to the technical field of motor assembling, and particularly relates to motor assembling equipment which comprises a rack. The material moving device is installed on the machine frame, and the material moving device is provided with a plurality of stations used for containing machine shells; the feeding device is mounted on the side of the rack; the heating device is mounted on the rack; the coil press-fitting device is arranged on the rack and is used for press-fitting the stator coil into the heated casing; the rear cover press-fitting device is installed on the rack and used for press-fitting a rear cover into the machine shell provided with the stator coil; the screw locking device is installed on the rack and used for fastening the rear cover and the machine shell; the discharging device is mounted on the side of the rack; the machine shell is conveyed to a set position through the material moving device, and the stator coil and the rear cover are sequentially pressed into the machine shell through the coil press-fitting device and the rear cover press-fitting device, so that the assembly of the motor is realized, the mechanization of the assembly process is improved, the production efficiency is improved, and the labor cost is reduced.
Owner:台州智惠自动化科技有限公司

PCB stator with integral ferromagnetic core

A printed circuit board (PCB)-based axial flux motor and methods of manufacturing are disclosed herein. The axial flux motor includes a printed circuit board (PCB) stator assembly having a plurality of PCB stator cores distributed about a central rotational axis, each of the PCB stator cores include at least one stator coil layer surrounding a corresponding PCB void and a stator core insert disposed in the corresponding PCB void. The axial flux motor includes one or more rotors attached to a common shaft, each rotor having at least two magnetic poles. The axial flux motor includes a frame having at least one bearing. The frame is configured to align and support the one or more rotors for rotation about the central rotational axis.
Owner:EAST WEST MFG

Dual inverter system

The dual inverter system includes a first inverter connected to one end of a stator coil of the motor and a second inverter connected to the other end. The controller can execute a dual mode in which the motor is driven by two inverters and a single mode in which the motor is driven by only one inverter. The controller closes the upper SW elements of all of the first and second inverters, opens all the lower SW elements, and closes the connection switch when the voltage at the DC end of the first inverter exceeds the threshold voltage. Alternatively, the controllers close all the lower SW elements of the first and second inverters to open all the upper SW elements and close the connection switches.
Owner:TOYOTA JIDOSHA KK

Manufacturing method of frameless torque motor stator core

The invention discloses a manufacturing method of a frameless torque motor stator core, the stator core comprises a stator yoke part, a stator tooth part and a stator coil, the stator yoke part is in a circular ring shape, the stator tooth part is in a sun tooth type structure, the stator tooth part comprises a circular ring part, a tooth boot part and a tooth body part, the stator tooth part is embedded in the stator yoke part, and the tooth body part is in a sun tooth type structure. The plurality of tooth body parts are uniformly distributed, high-temperature-resistant insulating films are prepared on the surfaces of the stator yoke part and the stator tooth parts, and the stator coils are arranged on the peripheral sides of the tooth body parts in a sleeving manner; the manufacturing method comprises the following steps: S100, manufacturing the stator yoke part and the stator tooth part, and carrying out coating treatment; s200, winding to form a stator coil; s300, assembling a stator iron core; s400, welding a wire pin; s500, pouring glue and drying; s600, boring and shaping: boring the inner side of the circular ring part and the solidified potting glue, and boring off the circular ring part, so that two adjacent tooth shoe parts are completely isolated, and the closed slot of the stator core is bored to form an open slot; and S700, carrying out performance detection.
Owner:SHENZHEN QIANGHE ELECTRIC CO LTD

Iron core welding equipment for processing single-tooth concentrated winding stator coil

The invention relates to the technical field of motor assembly assembling, in particular to iron core welding equipment for single-tooth concentrated winding stator coil machining. Comprising a workbench; a station table used for switching a welding station and a discharging station is assembled on the workbench. Two assembly clamps are assembled on the station table; two inner positioning mechanisms distributed over the two splicing clamps in a one-to-one correspondence mode are assembled on the station table through a supporting frame, and a welding mechanism is assembled on the workbench. The equipment provided by the invention is improved and designed on the basis of the existing equipment, and is provided with the integrated assembling clamp for assembling and clamping the iron core, so that the existing pre-assembling clamp is replaced, and the existing iron core assembling operation process of firstly pre-assembling and then clamping is changed; the continuous automatic assembling operation of horizontal discharging, overturning transposition and pushing, clamping and assembling is adopted for the assembling clamp, the assembling operation process is optimized, the difficulty of assembling and positioning is reduced, and the overall efficiency of welding operation is improved.
Owner:YUNBO TIANJIN MOTOR TECH DEV

Miniature wheel type pipeline robot

The invention relates to the technical field of pipeline robots, and discloses a miniature wheel type pipeline robot which comprises a bending assembly, walking units are connected to the two ends of the bending assembly correspondingly, each walking unit comprises two wheel train assemblies, each wheel train assembly comprises a walking mechanism and a reducing mechanism, and each walking mechanism comprises a stator coil, a rotor, a rotating disc and a plurality of elastic wheel legs. The stator coil is matched with the rotor, the rotating disc and the rotor are coaxially fixed, the elastic wheel leg comprises an elastic piece and a walking wheel, the walking wheel is rotatably arranged at one end of the elastic piece, the other end of the elastic piece is fixedly connected with the rotating disc, the end, provided with the walking wheel, of the elastic piece stretches outwards, and a rotating shaft of the walking wheel inclines relative to the axis of the rotating disc. The elastic wheel legs are evenly distributed on the circumference, and the two wheel train assemblies are connected and symmetrically arranged. The diameter changing mechanism can enable the ends, away from the rotating disc, of the elastic pieces to be synchronously retracted inwards, and the bending assembly can enable the two walking units to be bent. The miniature wheel type pipeline robot is suitable for being used in a small-pipe-diameter multi-way pipe network.
Owner:HEBEI JUNTAO TECH CO LTD

Double-station motor stator internal winding machine capable of automatically feeding and discharging

The invention discloses a double-station motor stator internal winding machine capable of automatically feeding and discharging, and belongs to the technical field of motor winding machine equipment. Comprising a machine box, an automatic conveying mechanism, a transfer storage mechanism, a winding seat mechanism, a wire clamping and shearing mechanism and a three-axis mechanism, the automatic conveying mechanism, the transfer storage mechanism, the winding seat mechanism, the wire clamping and shearing mechanism and the three-axis mechanism are sequentially arranged above the machine box, a pay-off rack mechanism is further fixedly connected to the side, close to the three-axis mechanism, of the machine box, and a first carrying mechanism and a second carrying mechanism are arranged above the automatic conveying mechanism; the three-axis mechanism is connected with a winding mechanism; and an aluminum profile frame is also arranged above the case. According to the double-station motor stator inner winding machine with the automatic feeding and discharging functions, automatic winding, automatic feeding and discharging and automatic wire clamping and shearing are achieved through all the mechanisms together, manpower is reduced, the working efficiency and the product yield are effectively improved, and stator coil products are simply, efficiently and stably wound out.
Owner:SHENZHEN XINGTE TECH CO LTD

Flanging paper inserting machine

The invention relates to a flanging and paper inserting machine, and belongs to the technical field of new energy motor machining. Comprising a pre-forming mechanism; the pre-forming mechanism comprises a pre-forming support, a pre-forming mold is erected on the top of the pre-forming support, the pre-forming mold sequentially comprises a vertical forming mold body, an inward turning forming mold body and an inward folding forming mold body from front to back, and the bottom face, close to the chamfered side of the paper strip to be machined, of the vertical forming mold body is provided with an inward-concave vertical forming inclined face. The bottom face, close to the chamfered side of the paper strip to be machined, of the inward-turning forming mold is provided with an outward-protruding inward-turning forming inclined face, and the inward-folding forming mold comprises an inward-folding guide ramp connected with the inward-turning forming inclined face and an inward-folding forming inclined face perpendicular to the direction of the inward-folding guide ramp. When the formed paper strip finished product which is formed by automatic folding and is provided with the flanging structure is inserted into a stator coil hole to be inserted, the stroke length of the inserted insulation paper can be controlled through the fixed length of the flanging structure, so that the accurate insertion of the insulation paper is realized.
Owner:铭纳阳智能科技(江苏)股份有限公司

Motor bearing, motor, air compressor and air blower

The invention provides a motor bearing, a motor, an air compressor and an air blower, the motor bearing is provided with a first side opposite to a stator coil of the motor in the axial direction, the motor bearing is internally provided with a heat dissipation air channel, and the heat dissipation air channel is provided with a first air inlet and a first air outlet located in the first side; the motor bearing is provided with a shunting structure, the shunting structure is used for at least shunting incoming wind into first wind and second wind, and guiding the first wind to the first side, so that the first wind flows out from the first side; and the shunting structure further guides the second air to the first air inlet of the heat dissipation air duct, so that the second air flows out from the first air outlet. According to the technical scheme of the invention, the first wind and the second wind shunted by the shunting structure cooperate with each other, so that the stator coil and the motor bearing can be effectively cooled.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI

Full-automatic stator coil taping equipment

The utility model discloses full-automatic stator coil taping equipment, which comprises a machine table, a guide rail is fixedly arranged on the machine table, two ends of the guide rail are respectively and fixedly provided with a base plate, one end, far away from the machine table, of each base plate is provided with a placement plate, and the placement plates are used for placing stator coils; according to the full-automatic stator coil taping device, constant-tension stable winding and binding are achieved in a limited space, and it is guaranteed that accurate transverse translation is conducted in the constant-tension winding and binding process; when the equipment is taped, the posture is stable, and the movement is accurate; after one side of the stator coil is taped, the stator coil does not need to be disassembled, and the other side of the stator coil can be taped only by turning over the stator coil, so that the step of repeatedly clamping and positioning is saved, and the taping efficiency is improved.
Owner:ZHUZHOU ZHAOYUAN ELECTROMECHANICAL TECH CO LTD

Stator coil shaping device for efficient explosion-proof motor

The invention discloses a stator coil shaping device for an efficient explosion-proof motor, and belongs to the field of stator coil processing, the stator coil shaping device comprises a placing table, a positioning mechanism and a shaping mechanism, the positioning mechanism is arranged on the placing table; a plurality of sliding grooves are formed in the top of the containing table, the positioning mechanism comprises a first lead screw, a first bevel gear and a sliding block, a mounting cavity is formed in the containing table, the first lead screw is rotationally arranged in the mounting cavity, the first bevel gear is arranged at the end, close to the center of the containing table, of the first lead screw, and the bottom of the sliding block is arranged on the first lead screw; the top of the sliding block is in sliding fit with the sliding groove, a rotating motor is arranged at the bottom of the containing table, the output end of the rotating motor is connected with a second bevel gear, the first bevel gear is meshed with the second bevel gear, a coil body is arranged on the containing table, the sliding block is used for positioning a circular ring in the center of the coil body, and the shaping mechanism is used for shaping the coil body. The stator coil machining device can be suitable for machining stator coils of different sizes, and the machining precision is improved.
Owner:LUAN QIANGLI MOTOR CO LTD

Flywheel energy storage motor and use method

The invention relates to the technical field of electric energy storage, and provides a flywheel energy storage motor and a use method. The rotor is rotationally connected to the interior of the shell, and magnetic resistance of the rotor is non-uniformly distributed in the circumferential direction of the rotor; the stator is arranged on the outer side of the rotor in a surrounding mode in the circumferential direction of the rotor, and the stator is connected with the shell; a stator coil is connected to one surface, facing the rotor, of the stator and is used for generating a rotating magnetic field capable of rotating around the axis of the rotor; gaps are formed between the stator and the rotor and between the stator coil and the rotor; the two ends, in the axis direction of the rotor, of the rotor are each provided with at least one magnet exciting coil, the magnet exciting coils are connected with the shell, the axes of the magnet exciting coils are parallel to the axis of the rotor, and gaps exist between the magnet exciting coils and the stator. According to the invention, the technical problems of complex structure, high manufacturing cost, poor high-temperature adaptability and great bearing burden caused by mainly adopting a flywheel permanent magnet motor in the existing flywheel energy storage technology can be solved.
Owner:CHINA ERZHONG GRP DEYANG HEAVY IND

Rotary actuator

The invention relates to a rotary actuator (1) comprising: - a stator (10), - at least one stator coil (11) which is connected to the stator (10) in such a way that a force acting on the stator coil (11) is transferred to the stator (10); - an armature (20) rotatable about an axis of rotation (2) relative to the stator (10), - at least one armature coil (21) which is connected to the armature (20) in such a way that a force acting on the armature coil (21) is transferred to the armature (20); - Power lines (3) through which at least one stator coil (11) can be energized, - Cable (4) through which the at least one armature coil (21) can be energized, - a rotation angle limiting device (5) by which rotation of the armature relative to the stator is limited to a rotation angle range of 0 to 359 degrees.
Owner:SIEMENS AG

Miniature motor stator coil winding machine and control method thereof

The invention relates to the technical field of motor stator coil winding machine control, in particular to a micro motor stator coil winding machine and a control method thereof.The control method specifically comprises the steps that the transmission lag value of an enameled wire indirect tension value is determined according to the synchronous fluctuation condition between a tension actual measurement sequence and indirect tension sequences under different moving step lengths; lagging correction is carried out on the indirect tension value, the tension period correlation strength in the running stage of the stator coil winding machine is considered, and the interference distortion degree is evaluated; according to the change trend of the paying-off linear speed and the difference between the tension measured value and the set value, the winding looseness of the enameled wire is obtained; obtaining a weight through the two indexes, carrying out weighted fusion on a measured value and a predicted value to obtain a tension correction value, and carrying out motor stator coil winding machine enameled wire tension control by combining a PID control algorithm; the tension control precision of the motor stator coil winding machine is improved, the tension control effect of the coil winding machine is enhanced, and the tension fluctuation ratio of enameled wires is reduced.
Owner:SHENZHEN BALUNSHI ELECTROMECHANICAL EQUIP CO LTD

Temperature sensor holder and temperature sensor mounting method

A temperature sensor holder with which it is possible to easily mount a temperature sensor without giving damage on an object to which the temperature sensor is mounted, etc., includes a sensor holding portion that holds the temperature sensor; a holder engagement portion that is to be engaged with an object; and an arm having a curved portion that connects the sensor holding portion and the holder engagement portion. A temperature sensor mounting method for easily mounting the temperature sensor to a motor without giving damage on the motor includes engaging the holder engagement portion with an insulator due to elastic force of the curved portion of the arm of the temperature sensor holder, and at the same time, bringing the temperature sensor into pressure contact with a stator coil by the sensor holding portion to mount the temperature sensor holder to the insulator.
Owner:HONDA MOTOR CO LTD

Magnetic suspension water lubrication hybrid bearing

The invention discloses a magnetic suspension water-lubricated hybrid bearing, which comprises a magnetic suspension bearing and a water-lubricated bearing, the magnetic suspension bearing comprises a stator core, a stator coil and an insulating pouring sealant, the water-lubricated bearing comprises a bushing and a bearing bush, and the magnetic suspension water-lubricated hybrid bearing also comprises an intelligent monitoring and control system consisting of a power amplifier, a controller, a displacement sensor and a circuit thereof; when the magnetic conductive metal material rotating shaft supported by the magnetic suspension bearing and the water lubricated bearing is in working conditions such as starting, stopping, low speed or overload, the controller controls the power amplifier to enable the magnetic suspension bearing to enter a working state to provide main bearing force for the rotating shaft, and friction and abrasion of the bearing bush are effectively reduced; when the rotating shaft is in a high-speed and stable working condition, the controller controls the power amplifier to reduce the current and the electromagnetic force of the magnetic suspension bearing, so that the supporting effect of the magnetic suspension bearing is weakened, the water-lubricated bearing is in a stable hydrodynamic lubrication stage, main bearing force is provided for the rotating shaft, and the power consumption of the magnetic suspension bearing is effectively reduced.
Owner:WUHAN INSTITUTE OF MARINE ELECTRIC PROPULSION (THE 712TH RESEARCH INSTITUTE OF CHINA STATE SHIPBUILDING CORP LTD)

Permanent magnet synchronous motor fault diagnosis method applied to wind power generation system

Multi-source data of a rotor surface temperature value Tzz, a temperature value Dz of a stator coil, a resistance value of the stator coil, a voltage value I of the stator coil, a bearing vibration frequency and a bearing rotation speed of the permanent magnet synchronous motor are acquired, calculation accuracy is improved, a magnetic coefficient Tcd, a thermal short-circuit coefficient Dxs of the stator coil and a bearing wear vibration coefficient Zdxs are calculated respectively, and the stability of the permanent magnet synchronous motor is improved. And the fault of the permanent magnet synchronous motor is diagnosed through evaluation and analysis. A fault diagnosis recognition coefficient Sbx is obtained through comprehensive analysis and calculation, key fault parameters of the permanent magnet synchronous motor are comprehensively analyzed, and the fault diagnosis precision is remarkably improved; the fault diagnosis identification coefficient Sbx is analyzed and evaluated and is finally substituted into the unsupervised learning model; an efficient and reliable solution is provided for deep learning of fault diagnosis, operation monitoring and maintenance of the permanent magnet synchronous motor, and the method has important engineering application value and popularization significance.
Owner:YUNNAN ELECTRIC POWER TESTING & RES INST (GRP) CO LTD +1

Miniature disc type motor and miniature fan thereof

The invention discloses a miniature disc type motor and a miniature fan thereof, the miniature disc type motor comprises a PCB stator assembly and a driving control circuit, the PCB stator assembly comprises a PCB and a stator coil arranged on the PCB, the stator coil is connected with the driving control circuit, and the driving control circuit is connected with the PCB. The structural layout of the stator coil and the rotor magnet adopts a two-phase four-slot six-pole, three-phase six-slot four-pole or three-phase six-slot eight-pole structural layout, and better slot-pole matching of the miniature disc type motor is adopted, so that unbalanced radial magnetic pulling force is reduced, the torque fluctuation of the motor is improved, the vibration noise of a product is reduced, the sound quality of the product is improved, and the service life of the product is prolonged. The protrusion ratio of the product can be reduced to below 4dB; the optimized three-phase six-slot quadrupole can improve the motor efficiency by about 5%, the optimized three-phase six-slot octupole can improve the motor efficiency by about 12%, the optimized two-phase four-slot six-pole structure can improve the motor efficiency by about 5%, in addition, the overall layout is reasonable, the winding space is effectively increased, miniaturization and flattening of the miniature fan are better facilitated, and the service life of the miniature fan is prolonged. The size is further reduced.
Owner:东莞市鸿盈电子科技有限公司

Stator coil of permanent magnet direct drive hub motor

The utility model relates to the technical field of motor coils, in particular to a permanent magnet direct drive hub motor stator coil, which comprises an annular stator iron core, a plurality of coil supports and coil windings, the coil supports are mounted on the stator iron core in a circumferential array manner, the coil windings are wound on the coil supports, and the coil supports are detachably mounted on the circumferential surface of the stator iron core. And a plurality of radiating fins are arranged on the side wall, far away from the coil bracket, of the stator core at equal intervals. By arranging the plurality of heat dissipation fins on the circumferential wall of the stator core and installing the plurality of coil supports on the stator core, heat can be rapidly conducted out, the heat dissipation effect is good, by arranging the slots and the check rings, the coil supports are inserted into the slots, the coil supports can be limited through the check rings, disassembly and assembly are convenient and rapid, and meanwhile, a cable can be conveniently limited.
Owner:CHANGZHOU HUINENG COIL MFG CO LTD

Dual inverter system

The dual inverter system includes a first inverter connected to one end of a stator coil of the motor and a second inverter connected to the other end. The controller is capable of executing a single mode in which the second inverter is disconnected from the battery and the motor is driven only by the first inverter. When driving the motor in a single mode, the controller selects one of an upper short-circuiting circuit that turns on all the upper SW devices of the second inverter and turns off all the lower SW devices, and a lower short-circuiting circuit that turns on all the lower SW devices of the second inverter and turns off all the upper SW devices. The controllers compare the loads of the upper SW devices and the lower SW devices of the second inverters.
Owner:TOYOTA JIDOSHA KK

Rotor assembly

The utility model relates to a rotor assembly, which comprises a rotating shaft and a rotor iron core, two ends of the rotor iron core are respectively provided with a rotor baffle A and a rotor baffle B, the rotor iron core is provided with a plurality of rotor iron core axial oil ways, and the rotor baffle A and the rotor baffle B are provided with a plurality of radial oil ways communicated with the rotor iron core axial oil ways. The interior of the rotating shaft is hollow to form a middle axial oil hole, and the side wall of the rotating shaft is further provided with a side wall oil hole used for communicating the middle axial oil hole with part of the radial oil duct; the rotor baffle A and the rotor baffle B are provided with oil spraying holes B. The radial oil channels comprise the baffle radial oil channel A and the baffle radial oil channel B. One end of the baffle radial oil channel A is communicated with the rotor iron core axial oil way, the other end of the baffle radial oil channel A is communicated with the oil spraying holes B. One end of the baffle radial oil channel B is communicated with the rotor iron core axial oil way, and the other end of the baffle radial oil channel B is communicated with the side wall oil holes. According to the utility model, the cooling efficiency of the rotor iron core can be improved, the cooling of the rotor iron core can be satisfied, and the stator coil can also be cooled.
Owner:LISHUI FOUNDER INTELLIGENT DRIVE INST CO LTD

Full-automatic winding machine for electrifying, heating and curing stator coil of linear motor

The utility model relates to a linear motor stator coil electrified heating curing full-automatic winding machine which comprises a machine table, a winding mechanism is arranged on the machine table, a three-dimensional linear module used for positioning a wire is arranged on the winding mechanism, a wire guiding mechanism used for conducting wire guiding on a wound coil is arranged on the three-dimensional linear module, and a wire guiding mechanism is arranged on the three-dimensional linear module. One side of the winding mechanism is provided with a first wire clamping electrifying device used for clamping and breaking a wire head insulating layer, the wire guiding mechanism is provided with a second wire clamping electrifying device used for clamping and breaking a wire rod and clamping and breaking a wire tail insulating layer, and the winding mechanism is further provided with a mold closing adjusting mechanism used for limiting the width of a wound coil. The coil curing device has the advantages of complete coil curing, firmness in coil curing forming, good coil curing forming effect, firmness in coil winding, high product yield and the like; the problems that a coil is not firm in curing forming, incomplete in curing, not firm in curing, low in yield and the like due to the fact that the coil is formed by a winding machine on the market in an electric hot air blowing mode are effectively solved.
Owner:GUANGDONG ZONGHENG TECH CO LTD

Multistage pumping system for adaptive offloading of a liquid from a container

A pumping system includes a plurality of interconnected integrated motor / pump modules (IMPs) submerged in a process liquid, such as liquid hydrogen (LH2), within a container, the IMPs being separately controlled by adjustable speed drives (ASDs). The rotation speeds of the IMP impellers are controlled such that the NPSH_A for each IMP remains above a minimum, critical suction head NPSH_c of the IMP, while the outlet pressure and flow of the last IMP is maintained at a specified level unless its NPSH_A falls substantially to its NPSH_c, or until the container is substantially empty. The IMPs can be identical, initially operating at the same speeds, or the first IMP can be an inducer IMP having a reduced NPSH_c. The IMPs can comprise permanent magnets or induction coils attached to their impellers that pass in proximate radial or axial alignment with stator coils. The ASDs can be variable frequency drives (VFDs).
Owner:FLOWSERVE PTE LTD

Transmission system, mover position detection method and computer readable storage medium

According to the transmission system, the rotor position detection method and the computer readable storage medium, the stator comprises a stator, a rotor and a processing unit, the stator comprises a plurality of stator modules, the plurality of stator modules are sequentially arranged along a transmission path, each stator module comprises a stator coil, a first sensing unit, a second sensing unit and a third sensing unit, and the first sensing unit, the second sensing unit and the third sensing unit are sequentially arranged along the transmission path. The rotor comprises a power magnet array, a first sensing medium array and a second sensing medium array; the first sensing unit and the second sensing unit are correspondingly arranged, the first sensing unit is used for reading displacement signal data of the first sensing medium array, and the second sensing unit is used for reading coded signal data of the second sensing medium array; when the processing unit obtains data information of all effective signals generated by the third sensing unit, the absolute position jointly determined by displacement signal data read by the corresponding first sensing unit and coded signal data read by the second sensing unit serves as the absolute position of the rotor on the stator.
Owner:SHENZHEN DH ROBOTICS TECH CO LTD

Ball screw power module and robot

The utility model provides a ball screw power module, which comprises an assembling mechanism, an output end cover, an assembling nut and a protective end cover, and a driving mechanism, and is characterized in that the assembling mechanism comprises an actuator main shell, an output end cover, an assembling nut and a protective end cover; the first knuckle bearing penetrates through the protection end cover through a force detection unit; the second knuckle bearing penetrates through the assembly nut and the output end cover through a ball screw; and the servo driving mechanism comprises a stator iron core, a stator coil, a rotor magnet, a rotor back iron and a lead screw nut. According to the scheme, an integrated design of a motor structure, a transmission structure and a control structure is finally realized; the lead screw nut serves as a part of an inner rotor in the motor structure, the rotor space of the motor structure is fully utilized, and the size and weight of the joint are reduced. Meanwhile, the transmission efficiency is high, the manufacturing and maintenance cost is low, the structure is simple, and the safety is high.
Owner:SHENZHEN ZHONGQING ROBOT TECH CO LTD

Motor health monitoring

An electrically powered aircraft is configured to check the health of its motors by determining a flux linkage associated with each of the motors. The flux linkage may be determined by measuring the back-EMF of stator coils of the motor. The flux linkage may be measured while the motor is not powered or may be estimated when the motor is in use. The flux linkage of a motor may be compared to a corresponding threshold value to assess whether the magnet(s) of the motor have degraded to a point at which they pose safety concerns. The flux linkage values may also be used to project when the motor needs to be maintained and / or replaced. The flux linkage value of a motor may be displayed, along with historical flux linkage values for that motor, to show a magnitude of demagnetization of the magnet(s) of the motor.
Owner:BETA AIR LLC

Linear motor stator coil shaping tool

The utility model discloses a linear motor stator coil shaping tool. The linear motor stator coil shaping tool comprises a lifting module, a bending module and a supporting frame. Wherein the bending module comprises a lead screw groove, the lead screw groove is formed in the middle of the upper side of the supporting frame, two sliding blocks are arranged in the lead screw groove, the two sliding blocks are hinged to corresponding connecting rods through pin shafts correspondingly, and the two ends of the inner side of the lead screw groove are movably connected with one ends of two-way lead screws correspondingly. According to the linear motor stator coil shaping device, a linear motor stator coil is placed in the coil clamping groove, the pressing block presses the middle of the linear motor stator coil in the coil clamping groove through the lifting module, the two shaping plates bend and shape the linear motor stator coil through the bending module, and the linear motor stator coil is shaped. The shaping force of the linear motor stator coil is consistent, and the practicability is high.
Owner:JUN FAN DIAN JI (QING DAO) YOU XIAN GONG SI

High-pass filtering active damping control method of permanent magnet motor

The invention discloses a high-pass filtering active damping control method of a permanent magnet motor, and belongs to the field of motor control. According to a permanent magnet motor driven by an inverter, large current harmonics are contained in a stator coil, and vibration and noise of the motor are caused. An LC filter is connected in series between an inverter and a motor, so that current harmonics can be filtered, but system resonance can be caused, current waveform deterioration is caused, even stable operation of the system is influenced, and dynamic performance is seriously reduced. According to the invention, the high-pass filter is connected in series in the capacitance current feedback loop, so that the resonance suppression effect and the dynamic performance of the motor system are improved.
Owner:BEIJING UNIV OF TECH