24 results about "Permanent magnet dc motor" patented technology

1. Name of the designed product: permanent magnet DC speed reduction motor. 2. Use of the designed product: the designed product is used to generate driving torque as a power source of electric appliances or various machines. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The utility model provides a large torque permanent magnet direct current motor, which comprises a motor shell, a rear cover, a first bearing, a second bearing, a rotating shaft, a rotor core, an arc-shaped magnet, a heat dissipation assembly, a commutator and a carbon brush assembly, and is characterized in that the heat dissipation assembly comprises a front fixing ring, a rear fixing ring and heat dissipation blades which are integrally arranged, and the periphery of the motor shell is provided with a plurality of groups of first heat dissipation holes; the heat dissipation assembly is provided with a first heat dissipation hole corresponding to the heat dissipation blades, the middle part of the heat dissipation assembly is provided with an installation cavity, the commutator is fixed on the rotating shaft, the front end of the commutator corresponds to the interior of the installation cavity, and the carbon brush assembly is fixed at the rear end of the motor shell and corresponds to the front side of the rear cover. According to the motor, the mounting distance between the commutator and the rotor core can be shortened, the structure of the motor is more compact, the size of the motor is further reduced, on the other hand, the heat dissipation assembly can quickly discharge heat from the first heat dissipation holes, the heat dissipation capability of the motor is improved, and the service life of the motor is further prolonged.

Technical solutions are described for diagnosing a sensor error in an actuator having a permanent magnet DC (PMDC) motor, including: measuring, by a position sensor, a measured position of the PMDC motor; determining, based on the measured position, an estimated motor velocity; measuring, by a current sensor, a measured current in the PMDC motor; determining, based on the measured current in the PMDC motor, a voltage command for the PMDC motor; determining, based on the measured current and the voltage command, and using a motor velocity observer, an observed velocity of the PMDC motor; determining a difference velocity as a difference between the estimated motor velocity and the observed velocity; determining, based on the difference velocity, the sensor error; and performing an action in response to determining the sensor error.

The application discloses a low-noise permanent magnet DC motor, which solves the technical problem of large noise of a permanent magnet DC motor in the prior art during operation, and comprises a shell and a rotating shaft extending out of the shell, a commutator fixed on the rotating shaft is arranged in the shell, and a carbon brush in contact with the commutator to transmit current is arranged in the shell, the inner side surface of the carbon brush comprises an axial arc surface and a connecting inclined surface connected in an axial direction, one end of the connecting inclined surface is connected with the axial arc surface, the other end of the connecting inclined surface is inclined to the outside of the shell and connected with the end surface of the carbon brush, and the axial arc surface is in surface-to-surface contact with the outer peripheral surface of the commutator.

The utility model relates to the technical field of permanent magnet direct-current motors, and particularly discloses a permanent magnet direct-current motor structure with a segmented structure, which comprises a shell, and a rotating shaft is embedded and rotatably mounted in the shell; a fixing mechanism is arranged in the shell, and the fixing mechanism is characterized in that a plurality of sleeves are installed on the inner wall of the shell, stators are continuously installed in the sleeves at equal intervals, mica sheets are connected to the tail ends of the sleeves, sliding grooves are formed in the surfaces of one sides of the sleeves in an embedded mode, and springs are installed in the sleeves in an embedded mode. According to the permanent magnet direct current motor structure with the segmented structure, a fixing structure is arranged, stator sleeves are isolated through mica sheets, eddy current loss is reduced, the two sleeves are attached at the same time, a limiting block on one side is inserted into a groove of the sleeve on the other side at the moment, the limiting blocks are clamped with clamping blocks by rotating the sleeves, and therefore the permanent magnet direct current motor structure with the segmented structure is formed. And the two sleeves can be assembled, so that the use convenience of the device is improved.

The permanent magnet direct current motor provided by the utility model comprises a permanent magnet assembly and a winding assembly, the winding assembly comprises a coil winding and a winding support frame used for supporting and winding the coil winding, the winding support frame is provided with a mounting groove, and a semiconductor refrigeration module is arranged in the mounting groove. The refrigeration end of the semiconductor refrigeration module is adjacent to the side where the coil winding is located, the high-temperature end of the semiconductor refrigeration module faces the outer edge of the winding assembly, the semiconductor refrigeration module is electrically connected with a power supply module of the motor, an installation groove is formed in the winding supporting frame for supporting the coil winding, and the semiconductor refrigeration module is arranged in the installation groove. By utilizing the characteristics of low energy consumption and high effect of semiconductor refrigeration, a local low-temperature area is generated at a coil winding position where heat is most easily generated in the motor, so that a great deal of heat is absorbed to generate an obvious cooling effect on the coil winding position, and the high-temperature end of the semiconductor refrigeration module correspondingly faces the outer edge of the winding assembly. Therefore, heat can be discharged as soon as possible through other physical heat dissipation modes.

The utility model provides a paint grinding mechanism for a four-wire copper wire lamp machine, which comprises a main body assembly, and the main body assembly comprises a permanent magnet direct current motor, two sliding blocks, an air cylinder fixing seat and a paint grinding supporting plate. The permanent magnet direct current motor is installed on the upper surface of the motor fixing base through the motor base. The permanent magnet direct current motor drives the adapter to rotate, the adapter drives the grinding rod and the grinding rod to rotate at a high speed and a constant speed, a copper wire penetrates into the position between the paint grinding supporting plate and the grinding rod from the position above the wire guide wheel and then is connected with the winding mechanism on the rear portion, and the copper wire makes contact with the outer wall of the wire guide wheel and the upper surface of the paint grinding supporting plate. The paint grinding supporting plate is pushed upwards through the adjusting air cylinder, the paint grinding supporting plate drives the copper wire to make contact with the grinding rod upwards, and then insulating materials on the surface of the copper wire can be ground away; in the paint grinding operation process, the height of the paint grinding supporting plate can be adjusted through the adjusting air cylinder according to the use requirement, and then a copper wire is prevented from being ground off.

The utility model provides a permanent magnet DC waterproof motor for aerial work vehicles, comprising a motor body and a front end cover installed at the front end of the motor body, the center of the front end cover is provided with a boss protruding outward, and the outer end of the front end cover is provided with a plurality of mounting blind holes at equal intervals along the circumferential direction with the boss as the center; a first annular groove is provided on the outer circumferential wall of the boss, and a first sealing ring is installed in the first annular groove; a second sealing ring is installed between the motor body and the front end cover, and a second annular groove is provided at one end of the front end cover facing the motor body, and the second sealing ring is installed in the second annular groove; the utility model provides a permanent magnet DC waterproof motor for aerial work vehicles, which overcomes the defect that the existing permanent magnet DC motor has poor waterproof performance.

Permanently excited DC motor (20) for a drive device for adjusting a vehicle assembly, with a stator (203) having a plurality of stator magnets (207, 207A, 207B) distributed around a motor axis (M), and a rotor (204) rotatable about the motor axis (M) relative to the stator (203), which rotor has a plurality of rotor poles (205) and rotor windings (206) arranged on the rotor poles (205), characterized in that side edges (209) of the stator magnets (207, 207A, 207B) are aligned obliquely to the motor axis (M) and / or that a first group of stator magnets (207, 207A, 207B) distributed around the motor axis (M) and a second group of stator magnets (207, 207A, 207B) distributed around the motor axis (M) and axially offset to the first group have an angular offset (β) around the motor axis (M) relative to one another.

The invention relates to motion sensing diagnostics for permanent magnet DC motor drivers. Technical solutions for diagnosing sensor errors in an actuator having a permanent magnet DC (PMDC) motor are described, including: measuring, by a position sensor, a measured position of the PMDC motor; determining an estimated motor speed based on the measured position; measuring, by a current sensor, a measurement current in the PMDC motor; determining a voltage command for the PMDC motor based on the measured current in the PMDC motor; determining an observed speed of the PMDC motor based on the measured current and voltage commands and using a motor speed observer; determining a differential speed as a difference between the estimated motor speed and the observed speed; determining a sensor error based on the differential velocity; and performing an action in response to determining the sensor error.

The application relates to a permanent magnet DC motor and a positioning mechanism, which comprises a base, a permanent magnet motor fixedly arranged in the base, a rotating shaft coaxially arranged in the center of the permanent magnet motor, a rear cover fixed to the axial first end of the base, a front cover fixed to the axial second end of the base, a center positioning mechanism arranged between the rotating shaft and the front cover and the rear cover and used for restraining the radial deviation of the rotating shaft and inhibiting the rotary shaking, the center positioning mechanism comprising a mounting ring coaxially fixed to the inner side of the rear cover and a plurality of groups of sensing pieces uniformly distributed on the inner side of the mounting ring, the sensing pieces each comprising a liquid storage bag, an elastic gasket, a flow pipe, a transfer cylinder and a movable plug, the liquid storage bag being fixed to the inner side wall of the mounting ring, and the elastic gasket being fixedly attached to the side end face of the liquid storage bag facing the rotating shaft. The application realizes the beneficial effect of the passive self-adaptive closed-loop adjustment of the radial deviation of the rotating shaft, the structure triggers the action by the deviation of the rotating shaft itself, can accurately restrain the radial jumping of the rotating shaft in real time, inhibits the rotary shaking, and improves the rotation stability of the shaft system.

The invention is suitable for the technical field of permanent magnet direct current motors, and provides a permanent magnet direct current motor control device which comprises a base, a supporting plate is fixedly installed at the top of the base, a motor body is fixedly installed at the top of the supporting plate, a box body is fixedly connected to the top of the base, and a fan is fixedly installed at the top of the base. According to the permanent magnet direct current motor control device, the exhaust pipe exhausts gas through the exhaust holes, so that the gas in the motor body is disturbed, the gas in the motor body is driven, heat in the motor body can be exhausted to the external environment more smoothly, the heat dissipation efficiency is improved, and the service life of the motor body is prolonged. And meanwhile, the motor body is surrounded by the first heat dissipation spiral pipe and the second heat dissipation spiral pipe, so that a part of heat on the outer surface of the motor body can be taken away in the process that gas flows in the first heat dissipation spiral pipe and the second heat dissipation spiral pipe.

The utility model provides an inner rotor brushless permanent magnet direct current motor without a shell shape, which belongs to the technical field of electric tool motors and comprises a motor main body. According to the utility model, the phase power line of the Hall plate assembly is connected with the controller on the equipment, the Hall element of the Hall plate assembly induces the position angle condition of the magnet in the rotor assembly, the controller orderly supplies power to the stator assembly, the motor main body has no rotor core, and the rotor core, the process and the tool do not need to be assembled by stamping; the motor body is compact in structure, small in size and high in applicability, the magnets can be limited and fixed under the arrangement of the first sheath, the second sheath and special glue, and the motor body can be cooled by positive and negative rotation air draft under the arrangement of the axial-flow blades of the rotor fan blades, so that the service life of the motor body is prolonged. Therefore, the problem that the motor main body is easy to fail in a high-temperature environment is solved, and the service life of the motor main body in the high-temperature environment is prolonged.

The invention discloses a three-phase brushless permanent magnet direct current motor which comprises a motor shell, a stator assembly is arranged in the motor shell, a rotor assembly is movably arranged in the stator assembly, a motor rotating shaft is fixedly arranged in the rotor assembly, and the two ends of the motor rotating shaft are arranged in the motor shell through bearings respectively. The motor is characterized in that the stator assembly comprises an installation cylinder, a plurality of installation groove holes are evenly distributed in the installation cylinder in the circumferential direction, stator iron cores are movably arranged in the installation groove holes, coils are wound on the stator iron cores, the air gap sensor is connected with the controller, and the controller is connected with the motor. And a dynamic adjusting mechanism capable of driving the stator core to move so as to adjust the air gap between the stator core and the rotor assembly is arranged in the motor shell. In order to overcome the defects in the prior art, the invention provides the three-phase brushless permanent magnet direct current motor which is simple in structure and can dynamically adjust the air gap according to different working conditions.

The utility model discloses an armature punching sheet used for a permanent magnet DC motor, comprising an armature punching sheet, the armature punching sheet is composed of a hollow groove and a winding groove, and the winding groove comprises a U-phase limiting end, a V-phase limiting end and a W-phase limiting end. According to the utility model, the twenty-four winding grooves are arranged on the armature punching sheet, and the groove depth is two fifths of the length from the inner ring to the outer ring of the armature punching sheet, so that the armature inductance can be reduced through the design of reducing the groove depth and avoiding an over-deep groove; meanwhile, the plurality of hollow grooves are designed, so that the inductor has the advantages of optimizing inductance characteristics, reducing commutation sparks and reducing material cost; the U-phase limiting end, the V-phase limiting end and the W-phase limiting end are arranged on the winding groove to limit winding of a U wire, a V wire and a W wire, the U wire, the V wire and the W wire are prevented from being wound and interwoven together, and meanwhile an installer can conveniently wind the U wire, the V wire and the W wire through the U-phase limiting end, the V-phase limiting end and the W-phase limiting end.

A variable speed lineup (VSL) pump system for a water system and method of controlling same, the VSL pump system including a diaphragm pump assembly, a brushed, permanent magnet DC motor coupled to the diaphragm pump assembly, and a pressure transducer mechanically coupled to a pump head of the diaphragm pump assembly. The VSL pump system may also include a controller, wherein the controller is configured to receive feedback from the pressure transducer and adjust motor speed using Pulse Width Modulation (PWM) signals and a power switching element (MOSFET) to maintain a constant pressure in the water system.

The subject application presents permanent magnet DC motor stator assemblies utilizing concave magnet configurations to enhance magnetic flux concentration. The stator designs incorporate buried permanent magnets (111) arranged in specific geometric patterns, surrounded by soft magnetic elements (112). This arrangement creates focused magnetic flux paths while maintaining magnetic isolation between poles. The subject-application also provides a method for converting between radial and axial configurations, offering enhanced design flexibility and manufacturing efficiency. These innovations result in improved magnetic field distribution and motor performance.

The subject application presents permanent magnet DC motor stator assemblies utilizing concave magnet configurations to enhance magnetic flux concentration. The stator designs incorporate buried permanent magnets (111) arranged in specific geometric patterns, surrounded by soft magnetic elements (112). This arrangement creates focused magnetic flux paths while maintaining magnetic isolation between poles. The subject-application also provides a method for converting between radial and axial configurations, offering enhanced design flexibility and manufacturing efficiency. These innovations result in improved magnetic field distribution and motor performance.

The invention relates to the technical field of motors, in particular to a dual-redundancy slotless brushless permanent magnet direct current motor, which comprises a shell and two groups of windings mounted in the shell, and further comprises heat dissipation holes formed in two sides of the shell; the rotating cylinders are rotationally arranged in the heat dissipation holes in a linear array from top to bottom; the baffle is fixedly mounted on the outer side of the rotating cylinder; the groove is formed in the shell and located on one side of the heat dissipation hole, one end of the rotating cylinder movably penetrates through the inner wall of the heat dissipation hole, and the tail end of the rotating cylinder is located in the groove; the driving assembly is arranged in the groove and used for driving the rotating cylinder to rotate; the dust removal assembly is arranged on one side of the baffle and used for removing dust on the surface of the baffle. According to the dual-redundancy slotless brushless permanent magnet direct current motor provided by the invention, through cooperation of a plurality of components such as the fixed frame, the movable block, the stop block and the positioning spring, the surface of the baffle plate is cleaned by the dust removal pad, and the cleanliness of the surface of the baffle plate is ensured.

An electric control brake valve resistant to magnetic interference comprises a brake valve body, a permanent magnet direct current motor assembly, a controller assembly, a support assembly and a pressure sensor, the controller assembly is used for receiving PWM signals and controlling the permanent magnet direct current motor assembly to rotate forwards and backwards, and the permanent magnet direct current motor assembly is used for providing thrust for generating pressure for the brake valve body; the permanent magnet direct-current motor assembly rotates forwards to enable the brake valve to generate pressure, the permanent magnet direct-current motor assembly rotates backwards to enable the brake valve to reduce pressure, and when the permanent magnet direct-current motor assembly stops rotating, the brake valve keeps outputting pressure. The controller assembly, the permanent magnet direct current motor assembly and the brake valve are connected and fixed through the support assembly by using screws, the pressure sensor is used for detecting the brake pressure of the brake valve and transmitting the brake pressure to the controller assembly, and the electric control brake valve is high in magnetic interference resistance and can effectively improve the safety of a brake system.

The utility model discloses an internal circulation oil cooling type permanent magnet direct current motor, and belongs to the technical field of motors. The internal circulation oil cooling type permanent magnet direct current motor comprises a cooling base, a clamping groove is formed in the upper surface of the cooling base, a transition cavity is connected into the clamping groove in a clamped mode, a motor body is fixedly connected into the transition cavity, an oil storage rotating groove is formed in the motor body, and rotating openings are formed in the two ends of the oil storage rotating groove. Limiting circular grooves are formed in the rotating openings, and the interiors of the two rotating openings are jointly and rotationally connected with a rotating rod; the heat dissipation design of the internal circulation oil cooling type permanent magnet direct current motor has many advantages. A unique oil cooling circulation system enables cooling oil to stably circulate between the oil storage rotating groove and the transition cavity by means of rotation of the oil pumping fan blades. In the process, the cooling oil can fully absorb heat generated by the winding and the iron core, and the heated cooling oil is sent back to the transition cavity for heat dissipation through the oil outlet pipe.

The utility model discloses a permanent magnet direct current motor, which relates to the technical field of permanent magnet direct current motors and comprises a stator yoke, a permanent magnet is arranged in the stator yoke, a rotor iron core is further rotatably mounted in the stator yoke, a plurality of iron core grooves are arranged on the rotor iron core, and the number of the iron core grooves is eight. The eight iron core grooves are formed in the periphery of the rotor iron core at equal intervals, the number of the permanent magnets is two, the two permanent magnets are symmetrically installed on the inner side wall of the stator yoke, and the rotor iron core is located between the two permanent magnets; according to the permanent magnet direct current motor, skewed slots, skewed poles, rotor notch width reduction and inner and outer circle non-concentric magnets are not needed, only the pole-arc coefficient of the magnets needs to be selected to be 0.75-0.8, the permanent magnet direct current motor has the advantages of being small in cogging torque, electromagnetic vibration and electromagnetic noise and high in mechanical performance, especially when the pole-arc coefficient is 0.75, the cogging torque is close to 0, the cost performance is high, and the permanent magnet direct current motor is suitable for large-scale popularization and application. And the quality and economic benefits are obvious.

The application relates to the technical field of electric motors, in particular to a double-redundancy slotless brushless permanent magnet DC motor which comprises a shell and two groups of windings installed in the shell, and further comprises: heat dissipation holes arranged on the two sides of the shell; a rotating cylinder which is linearly arranged in the heat dissipation holes from top to bottom; a baffle fixedly installed on the outer side of the rotating cylinder; a groove arranged on the shell and located on one side of the heat dissipation holes; one end of the rotating cylinder movably penetrates the inner wall of the heat dissipation holes and the tail end is located in the groove; a driving assembly arranged in the groove and used for driving the rotating cylinder to rotate; and a dust removal assembly arranged on one side of the baffle and used for removing dust on the surface of the baffle. The double-redundancy slotless brushless permanent magnet DC motor provided by the application realizes the cleaning of the surface of the baffle by the cooperation of multiple components such as the fixed frame, the moving block, the stop block and the positioning spring, so that the cleanliness of the surface of the baffle is ensured.

The utility model provides a permanent magnet DC motor for underwater operation, which comprises a shell, a stator assembly and a rotor assembly, the shell comprises a cylinder and an end cover assembly, the stator assembly is arranged in the cylinder, and the rotor assembly is rotatably arranged on the inner side of the stator assembly; the end cover assembly comprises a front end cover and a rear end cover, and holes or gaps between the front end cover and the cylinder body and between the rear end cover and the cylinder body are sealed through sealing parts. A water leakage detection part comprises a first detection conductive part and a second detection conductive part, the first detection conductive part is arranged in the rear end cover and extends for a certain distance in the circumferential direction of the rear end cover, and the first end of the second detection conductive part is connected with the first detection conductive part; the second end of the second detection conductive member extends into the cylinder. By applying the technical scheme, the permanent magnet direct current motor which can still keep good sealing performance in an underwater environment and has a water inlet detection function can be provided.