32results about How to "Increase Electromagnetic Thrust" patented technology

The invention disclose a displacement control mode of a rotor of a direct-drive switched-reluctance planar motor, belongs to the field of electromechanical control researches, and specifically relates to a displacement control of a rotor of a direct-drive switched-reluctance planar motor. The displacement control mode disclosed by the invention is characterized in that the displacement motion of a rotor 7 of a direct-drive switched-reluctance planar motor is changed cyclically, and the cycle of motion of the rotor 7 is equal to the pole pitch of a stator 9 and is 12-24 mm; and through dividing each cycle of motion into six equal parts, the control mode disclosed by the invention has the advantages that the power-on states of rotor windings are determined according to six different positions of the rotor 7 relative to a stator 8, because the cycle of motion of the rotor 7 is equal to the pole pitch of the stator 9, each rotor winding is equal in power-on time and displacement, so that the rotor 7 operates stably, thereby facilitating the accurate positioning of the rotor 7; and two phases of rotor windings are power-on simultaneously, so that the electromagnetic thrust of the rotor 7 is increased, and the running speed of the rotor 7 is increased.

The invention relates to a permanent magnet linear motor with a clamping function, comprising a primary core (2), a primary coil (3), a permanent magnet (8) and a secondary non-magnetic shaft (9) which are arranged from exterior to interior in sequence, wherein the primary coil (3) is wound in the slot of the primary iron core (2); the non-magnetic shaft (9) supports the permanent magnet (8) and an inner iron core (7); an air gap (4) is between the primary and the secondary; the inner iron core (7) is fixed on the secondary non-magnetic shaft (9) and tightly adhered to the upper end of the permanent magnet (8); an outer iron core (6) is fixed on a casing (1); a coil (5) is wound on the iron core (6); and in the case of suction, the suction on the iron core (7) is increased when the coil (5) is electrified to accelerate the suction and play the role in location, while in the case of disconnection, the coil (5) is reversely electrified to weaken axial magnetic field to accelerate the separation of a breaker.

The invention discloses a full-winding electromagnetic stirring device for a plate billet continuous casting crystallizer and a plate billet continuous casting crystallizer. The electromagnetic stirring device comprises a columnar iron core of which the working surface is not provided with a tooth socket; the non-working surface of the columnar iron core is arranged in an inner water cooling sleeve; a plurality of coils are wound on the working surface of the columnar iron core and the inner water cooling sleeve; the coils on the inner water cooing sleeve are arranged in an outer water cooling sleeve; circulating pipes are arranged in both the inner water cooling sleeve and the outer water cooling sleeve; two ends of each circulating pipeline are respectively communicated with a water pipe connector. The space utilization of a coil winding is improved furthest, the magnetic conduction area of the columnar iron core is increased, and the magnetic field intensity is improved, so the electromagnetic force of the electromagnetic stirring device is increased by 10-20 percent, the production period is shortened by 1 / 3, and the universality is high.

The invention discloses a multi-magnet compressor, which comprises four functional parts: an end cover, a stator assembly, a mover assembly, and a suction and discharge assembly. The end cover includes the left and right end covers; the stator assembly includes the iron casing, the permanent magnet, the insulating plate and the piston casing, etc.; the mover assembly includes the coil frame, the coil group, the movable sleeve, the piston, the piston rod, the piston inner sleeve and the inner stator, etc. , the piston is connected with the piston inner sleeve through the piston rod; the suction and exhaust assembly includes a valve cover, a baffle, an exhaust pipe, a buffer plate, a valve plate and a valve seat, etc.; the coil group is two mutual The coil is wound in the opposite direction and fixed in the annular magnetic field composed of permanent magnet blocks through the coil frame. After the current is passed through, the electromagnetic driving force is generated to drive the moving sub-assembly to move, and then the gas is compressed to do work, compressing the low-pressure gas into a high-pressure gas. Gases have pressure energy. The multi-magnet compressor of the invention has the advantages of compact structure, stable operation, low noise and prolonged service life.

The invention discloses a magnetic conductive device of a voice coil motor and the voice coil motor. The magnetic conductive device of the voice coil motor comprises a non-annular magnet cylinder and a magnetic conductive member, wherein a first side surface and a second side surface of the non-annular magnet cylinder are opposite and have different polarities. The magnetic conductive member is provided with a top plate, a bottom plate and a side plate, wherein the side plate is connected between the top plate and the bottom plate, the top plate of the magnetic conductive member covers a top surface of the non-annular magnet cylinder, the side plate of the magnetic conductive member covers the first side surface of the non-annular magnet cylinder. According to the above magnetic conductive device, the stability, electromagnetic thrust and efficiency of the voice coil motor can be raised.

The present disclosure provides a high-thrust high-temperature superconducting linear motor, which includes a mover part and a stator part, and the mover part includes a low-temperature refrigeration container, multiple rows of high-temperature superconducting coils arranged in the low-temperature refrigeration container, and a plurality of rows of high-temperature superconducting coils for cooling multiple rows of high-temperature superconducting coils. Refrigeration system of superconducting coils; the stator part includes a track body, multiple rows of power coils and multiple rows of suspension guide coils; in the direction perpendicular to the travel of the mover part, multiple rows of high temperature superconducting coils, multiple rows of power coils and multiple rows of suspension The guide coils are symmetrical to the central axis of the mover part, there is a row of power coils between two adjacent rows of high-temperature superconducting coils, and a row of high-temperature superconducting coils between two adjacent rows of power coils, and multiple rows of suspension guides The coils are distributed on both sides of multiple columns of high temperature superconducting coils. The maglev train using the superconducting linear motor of the present disclosure can improve the utilization rate of the magnetic field, obtain greater thrust and stability, and enable the train to have a higher running speed.

The invention provides a high-precision slotless permanent magnet motor, relating to the motor field. The motor is used for solving the defects that efficiency and thrust density are low, thrust fluctuation is strong as well as vibration and noise are high, and the problem that secondary weight and motor cost are high. The motor is characterized in that a secondary electromagnetic structure is optimized, thus the secondary weight is decreased, the thrust fluctuation and the cost of the motor are reduced, and air-gap magnetic density, the sine degree of an air-gap field, the electromagnetic thrust of the motor as well as the efficiency and control precision of the motor are improved. The secondary structure comprises master permanent magnets, auxiliary permanent magnets, a magnetic-collecting body and a yoke plate, and the widths of specific side faces among the master permanent magnets, the auxiliary permanent magnets, the magnetic-collecting body and the yoke plate are limited; each master permanent magnet is provided with a rectangle cross section; each auxiliary permanent magnet is provided with a mixed ladder-shaped and rectangle cross section or a mixed rectangle and rectangle cross section; the magnetic-collecting body is provided with a ladder-shaped or rectangle cross section; the master permanent magnets and the auxiliary permanent magnets are successively fixed on the magnetic-conducting yoke plate in a radial arrangement mode; the master permanent magnets, the auxiliary permanent magnets and the magnetic-collecting body are closely coordinated; every two adjacent master permanent magnets are opposite in magnetizing directions; and every two adjacent auxiliary permanent magnets are opposite in magnetizing directions.

The invention discloses a transverse flux magnetic field modulation type linear motor. The linear motor comprises primary bodies and secondary bodies. The two secondary bodies are in a C-shaped, mirror image arrangement, and three air gaps are arranged among the primary body and the secondary bodies. The inner sides of the secondary bodies are provided with a plurality of secondary grooves and a plurality of secondary teeth at equal intervals, and secondary permanent magnets are disposed in the secondary grooves. Each of the primary bodies comprises two same primary iron cores and a connecting beam used for connecting the two primary iron cores. The upper surfaces and the lower surfaces of the primary iron cores and the surfaces of the primary iron cores back to the connecting beams are provided with salient pole teeth, which are arranged at equal intervals, and are the same. The salient pole teeth are provided with salient armature windings in a coiled manner, and are provided with virtual teeth, and virtual grooves are arranged among adjacent virtual teeth, and in addition, virtual groove permanent magnets are disposed in the virtual grooves. Virtual groove armature windings are disposed in the virtual grooves. The three phases of the primary bodies are provided with three phases of armature windings. The armature winding of the same primary body is used to form one phase, and the armature windings of the three primary bodies are used to form three phases, and a difference among currents flowing through the three phases is 120degrees. The transverse flux magnetic field modulation type linear motor adopts modularization design, and has advantages of simple structure, and ability of improving fault-tolerant performance.

The invention provides a lens actuating device which comprises a base, a hollow magnetic element, a lens bearing seat, a hollow coil and a magnetic conductive element, wherein the hollow magnetic element is fixed on the base to generate a first magnetic force line loop and a second magnetic force line loop; the lens bearing seat is arranged at the inner edge of the hollow magnetic element, and a sliding gap is alternately formed between the lens bearing seat and the hollow magnetic element; and the magnetic conductive element and the hollow coil are arranged on the lens bearing seat. In the invention, the first magnetic force line loop and the second magnetic force line loop generated by the hollow magnetic element generate a magnetic attraction force with the magnetic conductive element together, and the hollow coil after being electrified and the hollow magnetic element generate an electromagnetic thrust force for pushing the lens bearing seat to displace; and the magnetic conductive element is used for promoting the electromagnetic thrust force so that the magnetic attraction force interacts with the electromagnetic thrust force to displace the lens bearing seat and then locate at a target position.

The invention disclose a displacement control mode of a rotor of a direct-drive switched-reluctance planar motor, belongs to the field of electromechanical control researches, and specifically relates to a displacement control of a rotor of a direct-drive switched-reluctance planar motor. The displacement control mode disclosed by the invention is characterized in that the displacement motion of a rotor 7 of a direct-drive switched-reluctance planar motor is changed cyclically, and the cycle of motion of the rotor 7 is equal to the pole pitch of a stator 9 and is 12-24 mm; and through dividing each cycle of motion into six equal parts, the control mode disclosed by the invention has the advantages that the power-on states of rotor windings are determined according to six different positions of the rotor 7 relative to a stator 8, because the cycle of motion of the rotor 7 is equal to the pole pitch of the stator 9, each rotor winding is equal in power-on time and displacement, so that the rotor 7 operates stably, thereby facilitating the accurate positioning of the rotor 7; and two phases of rotor windings are power-on simultaneously, so that the electromagnetic thrust of the rotor 7 is increased, and the running speed of the rotor 7 is increased.