59results about How to "Reduce positioning force" patented technology

The invention relates to a flat plated three-phase linear permanent-magnet synchronous motor, belonging to the motor field. The invention overcomes the problems in the prior flat plated three-phase linear permanent-magnet synchronous motor that the designs of a pitch tau t and a polar distance tau p are not easy considerate, the winding end parts are long and mutual cross, the insulation of the windings is complex, and the production cost is high and so on. The flat plated three-phase linear permanent-magnet synchronous motor comprises an armature part and a permanent-magnet excitation part, wherein, these two parts have gas gap therebetween; the armature part is composed of an armature winding and an armature iron core; the permanent excitation part is composed of a permanent-magnet part and a permanent-magnet yoke; the armature iron core pitch tau t and the permanent-magnet polar distance tau p satisfy the following formula as 3ntau t=(3n+-1)tau p, wherein n is a natural number. The invention not only can be used as the linear motor with high performance, but also can be used as the linear generator with high performance, thereby having wide application prospect.

The invention discloses a flat type transverse magnetic flux switching permanent magnet linear motor, comprising a flat type motor primary and a flat type motor secondary, the motor primary and the motor secondary are installed oppositely, an air gap surface is left in the middle, and the motor primary is installed with a Permanent magnets and windings work on the principle of magnetic flux switching; it is characterized in that: the motor primary includes more than one primary unit, the primary unit includes a primary unit iron core, and the primary unit iron core consists of two primary unit cores perpendicular to the direction of motion v Composed of unit core blocks, the primary unit core block is formed by laminating primary electrical steel sheets along the moving direction v; the secondary of the motor is formed by laminating secondary electrical steel sheets along the moving direction v. The motor provided by the invention has a simple structure and production process, both primary and secondary can be laminated to reduce iron loss, high utilization rate of permanent magnet and winding, uniform permeance of permanent magnet magnetic circuit, small positioning force, small eddy current, and electric thrust only It is related to the length of the motor and can be designed in rapid batches and other beneficial effects.

The invention discloses a fault-tolerate primary permanent magnetic vernier linear motor, which is applied to the field of high-reliability linear driving and comprises a primary winding, a secondary winding and an armature winding; the secondary winding is a simple salient pole structure with ladder-shaped teeth and is longer than the primary winding, an air gap exists between the primary and secondary windings, armature teeth with even number are uniformly distributed on the primary winding, a set of concentrated winding is wound on each armature tooth, a fault-tolerate tooth is arranged between adjacent two armature teeth, a permanent magnet with the magnetizing direction being parallel to the central symmetrical axis of the armature is attached to the lower face of each armature tooth, the permanent magnets are uniformly distributed on each armature tooth, the magnetizing direction of each permanent magnet is in N-S and S-N alternative arrangement, and the magnetizing directions of the permanent magnets on all armature tooth are same in arranging sequence; and the height of the fault-tolerate tooth is equal to the sum of the heights of the armature tooth with the face being attached to the permanent magnetic and the permanent magnet. The fault-tolerate primary permanent magnetic vernier linear motor is simple in structure, large in pushing force, small in pushing force pulse, high in reliability and strong in the running property of the motor with the fault and fault-tolerate property.

The invention discloses a modular complementary type primary permanent magnet linear motor and a motor module formed thereby. The primary permanent magnet linear motor comprises a primary level and a secondary level; the primary level and the secondary level are respectively in a salient-pole structure, and an air gap is formed between the two levels; the primary level comprises a rotor module which comprises a first module and a second module; a first non-magnetic material is arranged between the first module and the second module; the first module and the second module both comprise two salient-pole magnetic materials and a permanent magnet arranged between the two salient-pole magnetic materials; the salient-pole magnetic material is provided with m numbered primary teeth, and a central armature winding is arranged on the primary teeth; the relative displacement between the first module and the second module is calculated as follows: lambda2=(k+ / -0.5) tau s; the relative displacement between the adjacent two salient-pole magnetic materials is calculated as follows: lambda1=m*tau m; and the ratio of the primary polar distance to the secondary polar distance is as follows: tau m:tau s=(m+ / -1):m. The invention has the advantages of symmetric back electromotive force, relatively small positioning force, low thrust fluctuation and the like and is applicable to the application occasion of a linear motor with a long-stator structure.

The invention discloses a linear plate type switch magnetic flux permanent magnet motor. The motor comprises a secondary stator and a primary rotor. The primary rotor comprises U-shaped iron cores with U-shaped sections, permanent magnets, a non-magnetic conductor interval, a magnetic conduction bridge and a primary three-phase winding. The non-magnetic conductor interval is arranged between the two adjacent U-shaped iron cores. The non-magnetic conductor interval and the U-shaped iron cores are same in thickness. The magnetic conduction bridge is arranged on the tops of the U-shaped iron cores. Two permanent magnets which are same in thickness and opposite in magnetization direction are installed between the two U-shaped iron cores of same phase and the magnetic conduction bridge. The secondary stator is provided with an electrode and a groove on the surface which is just opposite to the primary rotor. The electrode and the groove can be precisely located and controlled by a controller driven by sine-wave current. A gas clearance is arranged between the U-shaped iron core of the primary rotor and the secondary rotor. The motor disclosed by the invention is used in a direct drive type alternating-current transmission system; and an intermediate transmission structure and a speed changing device are unnecessary. The motor can be used as a direct drive motor of a feeding drivingsystem of a numerical control machine. The motor can also be applicable to a translation transmission system with a locating function.

The invention provides a low-speed high-thrust-density double-layer fractional slot winding cylindrical linear motor which belongs to the technical field of a linear motor. The low-speed high-thrust-density double-layer fractional slot winding cylindrical linear motor comprises a motor primary stage, a motor secondary stage, a primary iron core, an air gap, a primary wire duct, a primary half wireduct, primary teeth, primary edge teeth, a primary yoke, a cake-shaped winding, a permanent magnet, a magnet guiding ring, etc. A double-layer factional slot winding structure is utilized. A motor polar distance is reduced, and working frequency is effectively increased, thereby improving motor efficiency, and realizing a certain speed adjusting range of the motor. The width of an edge trough isset to one half of that of a normal primary trough, and the thickness of the primary edge trough is smaller than that of the primary tooth. Furthermore the effective length of the motor primary pole is equal with (n+1 / 2)*tau, and a remarkable inhibition effect is performed on motor thrust force fluctuation. A motor fixing force is reduced so that higher stability and higher reliability are realized in motor operation. The low-speed high-thrust-density double-layer fractional slot winding cylindrical linear motor has advantages of simple structure, relatively low cost, high efficiency, relatively large speed adjusting range, high thrust force density, high operation stability, high operation reliability, etc. The low-speed high-thrust-density double-layer fractional slot winding cylindricallinear motor is suitable for a low-speed large-thrust-force occasion.

A kind of two-sized flat three phase beeline permasyn motor, it relates to field of motor. Aiming at resolve problem that pitch Taut and polar distance Taup design is not easy to give attention to, every ends are across with each other, ends of coil is long, the copper cost is big, insulation of coil is complex, cost of manufacture is high of current flat three phase beeline permasyn motor, the invention designs a kind of two-sized flat three phase beeline permasyn motor. The invention includes armature part and permanent-magnet excitation parts; the armature part is nipped between the permanent-magnet excitation parts which are parallel with each other, two gases are between the armature part and two permanent-magnet excitation parts, thereinto the armature part mainly composes armature winding and armature iron core; the permanent-magnet excitation parts composes permanent-magnet. Iron core pitch Taut of the armature and polar distance Taup of the permanent-magnet fulfills the relation 3nTaut=(3n+-1)Taup, thereinto n is natural number. The beeline motor of the invention can be used as beeline motor, but also as the beeline generator, it possesses wide application foreground.