37results about How to "Increase output thrust" patented technology

The invention relates to an orthographic double-driving-type precise piezoelectric stick-slip linear motor and a driving method thereof. The technical problems are solved that since single-stator driving is adopted for an existing piezoelectric stick-slip linear motor, the output thrust is small, the stroke is short, and the precision is low. The motor comprises an inclined trapezoidal orthographic driving assembly, a rotor assembly, a base, a displacement adjuster, a dovetail platform and dovetail platform limit strips. The inclined trapezoidal orthographic driving assembly generates lateraldisplacement, the contact positive pressure between the inclined trapezoidal orthographic driving assembly and the rotor assembly is adjusted, and comprehensive regulation and control for the frictionforce are achieved; meanwhile, the inclined trapezoidal orthographic driving assembly is driven through different combinations of asymmetric electric signals, and multiple kinds of driving modes suchas output reinforcement type and motion emergent-stopping type can be achieved. The orthographic double-driving-type precise piezoelectric stick-slip linear motor has the advantages of large output thrust, high precision, long stroke and the like and has great application prospects in micro-nano precise driving and poisoning fields such as processing of optical precise instruments and semiconductors.

The invention provides a high-precision stick-slip piezoelectric rotating table and aims to solve the technical problems of small thrust output, low positioning precision, low movement speed, high frictional loss, poor environmental suitability and the like of an existing stick-slip piezoelectric rotating table. The high-precision stick-slip piezoelectric rotating table comprises a casing, a limiting device I, a bearing, a gear, a rotating table, a packaging board, a rack, a limiting device II, a stator, a baffle plate and a packaging casing, wherein thrust and speed of the rotating table areincreased through meshing transmission of the gear and the rack; compared with direct drive of the micro-rotating table, the rotating table is driven to move by rotation of the gear, so that loss produced by rapid friction between a driving element and a rotating shaft is reduced; under different working conditions, positive pressure of the driving element can be adjusted by the table at any time,and output precision and environmental suitability of the rotating table are effectively improved. The high-precision stick-slip piezoelectric rotating table has good application prospect in the fields of precision optical instruments, biological microoperation and micro-nano precise drive and positioning technologies.

The invention relates to a limited stroke high-dynamic plane motor which belongs to the technical field of motors. The invention solves the problems of small stroke and small output thrust of the traditional synchronous short-stroke plane motor. The limited stroke high-dynamic plane motor comprises a motor unit and a rotor support mechanism, wherein the motor unit comprises a motor primary class and a motor secondary class; the motor unit has a short motor primary class and long motor secondary class structure; an air gap is arranged between the motor primary class and the motor secondary class; the motor primary class has an iron core-free structure and comprises a winding fixed support plate and four armature windings; the winding fixed support plate has a lip-rounding structure; each armature winding is correspondingly and centrally fixed on a lip-rounding frame of the fixed support plate, the four armature windings are positioned on the same plane, each armature winding is a symmetrical multiphase winding formed by a group of coils; the effective edge of the coil of each armature winding is perpendicular to the lip-rounding frame of the fixed support plate; and the motor secondary class has a double-edge structure and is symmetrically arranged at both sides of the motor primary class. The limited stroke high-dynamic plane motor is used as a plane motor.

Disclosed is an electromagnetic suspension vibration isolation and energy feedback coordinating control method. The working mode of a cylindrical linear permanent magnet motor is selected according to the relationship between the sprung mass velocity and the double-stator asymmetric cylindrical linear permanent magnet fault-tolerant cursor motor rotor velocity, a skyhook-groundhook combined control strategy is designed, and the thrust or braking force needed by motor output is determined. The motor feeds energy back to a storage battery in an electricity generation mode, and absorbs electric energy from the storage battery in an electric mode. By the adoption of the strategy, vibration in the vehicle running process is effectively absorbed, the driving and taking comfort, the running comfort and the control stability of a vehicle are improved, the absorbed vibration energy is stored in the storage battery, the energy consumption of an electromagnetic suspension system is greatly reduced, and the method has good application prospects.

The invention relates to a two-stroke compact type multi-mode compound piezoelectric linear motor, which comprises a stator and a rotor, wherein the stator comprises an upper elastic block, a lower elastic block, a first group of piezoelectric actuating parts, a second group of electric actuating parts and fastening screws, wherein the first group of piezoelectric actuating parts are clamped between the upper elastic block and the lower elastic block and are uniformly clamped by the fastening screws; and the second group of piezoelectric actuating parts are firmly stuck on two opposite lateral surfaces of the lower elastic block. The rotor of the motor is a linear guide rail; and the lower part of the motor is supported by two parallel guide wheels. The motor is in a compact shape approximate to a cub and has the characteristic of two-stroke power output as well as high energy density, stable and precise motion output, high electro-mechanical transformation efficiency and simple structure and is easy for miniaturization.

The present invention discloses a dynamically vertically end portion effect weakened short primary linear motor. The motor comprises a primary iron core, and a winding and a secondary winded on the primary iron core; the end winding of the primary iron core is a full tank structure; the length of a tooth located at the end portion of the primary iron core is smaller than the length of a tooth located at the middle portion of the primary iron core, and the length of a tooth, close to the middle portion of the primary iron core, located at the end portion of the primary iron core is not smallerthan the length of a tooth, far away from the primary iron core, located at the end portion of the primary iron core. The teeth at the incoming end portion and the outgoing end portion of a short primary are regularly shortened and electromagnetic gaps of corresponding end portions are regularly increased to allow the magnetic field change intensity of the incoming end and the outgoing ends of theprimary to be weakened during movement of the linear motor and relieve the magnetic distortion degree of the end portion of the primary end so as to reduce the additional loss and the electromagneticresistance generated by a dynamically vertically end effect and achieve the purposes of increasing output thrust, improving the traction efficiency and reducing the thrust fluctuation.

The invention discloses a secondary yoke-free bilateral primary permanent-magnet switched reluctance linear motor. A primary side of the motor comprises a U-shaped magnetic conductive material, an armature winding and permanent magnets arranged at a notch of the magnetic conductive material; and a secondary side of the motor is only composed of yoke-free rotor blocks. The permanent magnets are magnetized in parallel, the magnetizing directions of the primary permanent magnets on the two sides are opposite, and the permanent magnets generate a magnetic circuit in a no-load state, the magnetic circuit passes through the U-shaped magnetic conductive material to cause a short-circuited state, thereby reducing the positioning force; a magnetic flux passes through a yoke-free secondary side in the loading process to a series magnetic circuit during loading. Removal of the secondary yoke portion can reduce secondary mass and improve thrust density. A secondary iron core can be filled and fastened by an epoxy material with light weight. The motor provided by the invention has the advantages of a small positioning force, a simple secondary structure, high thrust density and the like, is suitable for an electromagnetic ejection system, and can improve the power density and the loading capacity of the ejection system.

The invention relates to the technical field of electronic devices, in particular to a lifting-type rotating device and an electronic device using the lifting-type rotating device. According to the lifting-type rotating device, a driving mechanism comprises a driving shaft and a lifting cylinder arranged on the driving shaft in a sleeving manner, a transmission mechanism comprises a linear transmission assembly and a rotating shaft, and the linear transmission assembly comprises a limiting cylinder arranged outside the upper end of the lifting cylinder in a sleeving mode and an elastic piece connected between the limiting cylinder and the lifting cylinder; and one end of the rotating shaft is arranged in the upper end of the lifting cylinder in a sleeved mode, the other end of the rotatingshaft stretches out of the top end of the limiting cylinder to be connected with an electronic mechanism, and the rotating shaft is rotatably connected with the top end of the limiting cylinder. In this way, the driving shaft and the lifting cylinder for realizing linear lifting motions and the rotating shaft for realizing rotational motions are arranged coaxially, so that the size of the whole device is reduced, and miniaturization of the device is facilitated; and meanwhile, coaxial arrangement of the driving shaft, the lifting cylinder and the rotating shaft is beneficial for optimizing the stress of the device and improving the thrust output by the device.

The invention discloses a clamp type inertia piezoelectric linear motor. The clamp type inertia piezoelectric linear motor comprises a stator fixing frame and an output rod, the stator fixing frame isof a hollow structure, the two ends of the stator fixing frame are connected with a left lever and a right lever respectively, the upper ends and the lower ends of the left lever and the right leverare horizontally provided with an upper clamp block and a lower clamp block respectively, and a wedge block is placed between the two lower clamp blocks; annular laminated piezoelectric ceramic is arranged in the stator fixing frame, the upper end of the annular laminated piezoelectric ceramic abuts against the inner surface of the upper end of the stator fixing frame, the lower end of the annularlaminated piezoelectric ceramic abuts against the upper end of the wedge block, the output rod sequentially penetrates through the stator fixing frame, the annular laminated piezoelectric ceramic andthe wedge block downwards, and the lower end of the output rod extends out of the wedge block. According to the inertia piezoelectric linear motor, the stator adopts a clamp type structure, the leftlever and the right lever can be adjusted, and different precision requirements are met; and meanwhile, the clamp type structure can improve the output thrust by increasing the positive pressure and the friction force between the clamp and the output rod during working while realizing high precision.

The invention discloses a pressure cylinder. The pressure cylinder comprises a cylinder body, a first piston component and a second piston component; the first piston component comprises a first rod part, a first piston part and a piston hole, and the lower end part of the first rod part and the first piston part are connected with the cylinder body in a sealing and sliding fit manner; the secondpiston component comprises a second rod part and a second piston part, the second piston part is connected into the piston hole in a sealing and sliding fit mode, and the second rod part is connectedwith the cylinder body in a sealing and sliding fit mode; and a pressurizing conical surface is arranged at the lower end of the second rod part, a pressurizing ball is embedded in the cylinder body,and a pressure conical surface is arranged at the upper end of the piston hole, so that the pressure conical surface abuts against the pressurizing ball and drives the pressurizing ball to move towards the second rod part, and then the second piston part is driven to move upwards. According to the pressure cylinder, the output thrust can be greatly improved, then the clamping force for clamping aworkpiece is improved, the structure is compact, the size is small, and the space can be saved.

The invention discloses a linear motor. The motor comprises an iron core, a coil, a first concentrating flux plate and a first permanent magnet, wherein the iron core comprises an iron core body and core teeth which are arranged on at least one outer side face of the iron core body and protrude out of the iron core body. At least one of all the outer side faces, provided with the core teeth, of the iron core is provided with a first magnetic conductive plate, a first permanent magnet is arranged on the side, facing the core teeth, of the first magnetic conductive plate, one magnetic pole of the first permanent magnet is adjacent to the core teeth, and the magnetic pole ends, adjacent to the core teeth, of the first permanent magnet are arranged in the mode that N poles and S poles or S poles and N poles are alternately arranged. The coil is wound on the outer side face of the iron core body, and the winding direction of the coil is parallel to the protruding direction of the core teeth. Magnetic poles of a magnetic field generated by electrifying in the coil interact with magnetic poles, adjacent to the core teeth, of the corresponding first permanent magnets, and thrust is generated in the length direction of the iron core body to push the iron core or the first concentrating flux plate to move. The winding process of the coil is very simple, and the utilization rate of the coil can be improved.

The invention provides a stator split type movable iron core type permanent magnet linear oscillation motor, and belongs to the field of linear oscillation motors. Outer stator iron cores are symmetrically distributed at the two sides of an inner stator permanent magnet; rotor iron cores are symmetrically distributed between the outer stator iron core and the inner stator permanent magnet at equal intervals; a resonance spring is sleeved on the motion shaft; a motion shaft is connected to the geometric center of the side end of the rotor iron core bracket; the armature winding comprises two groups of coils and is connected with a sine alternating current source during use; the inner stator permanent magnet comprises a plurality of sub permanent magnets with the same size, the magnetizing directions are all vertical directions, and the magnetizing directions of the adjacent sub permanent magnets on the horizontal side are different; when the magnetizing directions of the adjacent sub permanent magnets in the vertical side are opposite, the inner stator iron core is additionally arranged between the two sub permanent magnets, two groups of coils are reversely connected in series or in parallel, and otherwise, the two groups of coils are connected in series or in parallel in the same direction; according to the invention, the service life of the permanent magnet is prolonged, the output thrust density is improved, and the noise and vibration of motor operation are reduced.