CN100587992C - Magnetostriction apparatus as well as linear motor and vibrating device using the same - Google Patents

Magnetostriction apparatus as well as linear motor and vibrating device using the same Download PDF

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CN100587992C
CN100587992C CN200710061674A CN200710061674A CN100587992C CN 100587992 C CN100587992 C CN 100587992C CN 200710061674 A CN200710061674 A CN 200710061674A CN 200710061674 A CN200710061674 A CN 200710061674A CN 100587992 C CN100587992 C CN 100587992C
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magnetostriction
rigidity
magnetic conduction
permanent magnet
conduction support
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CN101281950A (en
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杨锦堂
李健
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QINGDAO PENGBO DRIVE TECHNOLOGY CO., LTD.
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杨锦堂
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Abstract

The invention relates to a device for generating rectilinear motion by a magnetostriction device, especially a magnetostriction device, a linear motor and a vibration device using the same. Two permanent magnet poles of the magnetostriction device are respectively connected with a magnetostrictor and a rigid magnesium conducting bar by a rigid magnesium conducting support to compose a magnetic flux loop, the permanent magnet is arranged on a driving device and is driven by the driving device to circularly move relatively to the rigid magnesium conducting support in a plane which is upright with internal magnetic line of force; a rigid non-magnesium conducting bar is fixed on the rigid magnesium conducting bar of the magnetostriction device in the linear motor, a guide rail bar is contactedwith the magnetostriction device by the rigid non-magnesium conducting bar; one side of the magnetostriction device in the vibration device is fixed, the other side of the magnetostriction device isfixedly connected with the guide rail bar by the rigid non-magnesium conducting bar. By employing the device of present invention, rectilinear motion precision can be increased, integral structure andcontrol unit of the device can be greatly simplified.

Description

Magnetostriction apparatus and the linear electric motors and the vibrating device that adopt this device
Technical field
The present invention relates to a kind of magnetostriction apparatus, relate in particular to a kind of magnetostriction apparatus that utilizes and produce straight-line device.
Background technology
In the last few years, owing to giant magnetostriction material has the extensive attention that the relative adaptability to changes that the piezoelectric type telescopic material was huger has obtained scientific research and engineers and technicians in the past, giant magnetostriction material of the prior art (as Terfenol-D) is a kind of novel intelligent material that can produce telescopic shape change under the action of a magnetic field, at present, not rarely seen about utilizing giant magnetostriction material successfully to develop the report of high-performance precision driver and accurate linear electric motors, external indivedual companies have developed Related product and have put goods on the market.
Magnetostriction mechanism: be meant that object produces the phenomenon of deformation because of the variation of its magnetization, as Fig. 2 (a) with (b) shown in, when being L with former length 0Magnetostrictor 1 when placing outside exciting field, its shape can be extended and is L 1, variation length is Δ L, and the size of this variation is directly proportional with the excitation intensity of permanent magnet 7.So, when with can make a permanent magnet 7 near or away from a magnetostrictive material body or utilize magnetic circuit 71 magnetic field of permanent magnet to be imported or derives magnetostrictor 1, elongation will take place or shrink (recoverys) variation in the length of magnetostrictor 1 so.
Inchworm motion mechanism: as Fig. 1 (a) is inchworm motion mechanism schematic diagram, there is two clamp part A ' and C ' (can adopt magnetostriction apparatus to realize clamp) in typical inchworm motion mechanism, and a telescopic section B ' (it is flexible to adopt magnetostriction apparatus to realize) forms.Wherein, A ' and C ' can realize clamp chucking and clamp dispose procedure by control, and B ' can implement to elongate or shorten action.As shown in the figure, finish a single step inchworm motion and will realize, and the single step inchworm motion can be by final long stroke or the unlimited stroke motion realized of accumulation by six substep actions.By the clamp order that changes A ' and C ' the inchworm motion direction is changed, and realize the rightabout motion.
Inchworm motion also has another pattern, and shown in Fig. 1 (b), body itself does not move in this pattern, and movable part is middle cross bar.This cross bar will carry out a single step looper displacement movement under six stepping actions as the figure note, but the direction of motion is opposite with last pattern.
The linear electric motors that adopt magnetostriction and inchworm motion mechanism to make are arranged in the prior art, as the Chinese patent that February 11, disclosed publication number was CN1474504A in 2004, it discloses a kind of magnetic control shape memory alloy crawling type linear electric motors, mainly form by MSMA mover, iron core, excitation winding, output shaft, connecting rod, support, clamp, displacement transducer, controller etc., the iron core that has air gap makes the magnetic field intensity of the MSMA that is arranged in air gap be directly proportional with the excitation winding electric current, and the electric current that changes excitation winding can be controlled the deflection of MSMA.But, thereby being driven, magnetostriction extensively adopts electromagnetic drive mode, so that produce time-varying magnetic field because magnetostrictive material must just may produce actions such as elongation, contraction or recovery under the effect of time-varying magnetic field intensity.Yet, solenoid under this type of drive can produce thermal losses and thermal radiation, particularly under the situation of big electric current that needs high-intensity magnetic field and high frequency pumping, can to parcel in coil or the magnetostrictive material of solenoid central authorities produce the very big heat effect that rises, this heat effect that rises will directly influence the telescopicing performance of magnetostrictive material, particularly need produce accurately flexible application scenario at some, this heat negative interaction that rises is particularly evident.
Recently, some academic research articles all have concern to this type of problem, for reducing the possible heat effect that rises, avoid influencing designed precise-motion mechanism or motor properties, the designer often will consider circulating cooling system in mechanism design, make based on magnetostrictive material driving element complex structure, link is many, cost performance is low.In addition, drive the linear electric motors of being researched and developed based on magnetostrictive material, the linear electric motors that particularly utilize the inchworm motion principle design to make often need at least three road current excitations and control system could realize the inchworm motion of clamp-flexible alternating movement.Like this, thermal losses and thermal radiation that the electricity (electricity causes clamping institution such as piezoelectricity clamp mode) of one side clamp action or electromagnetism (magnetostriction clamping institution) link have further increased body again, the control signal of electric current and power-supply system will be more complicated also on the other hand.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, the permanent magnet excitation magnetostrictive material and the corresponding clamping institution that provide a kind of utilization to have the magnetic field intensity phase difference are realized the inchworm motion linear device, utilize the rectilinear motion motor or the vibrator of the inventive method design, can not use solenoid, negative effect thereby the heat that can avoid solenoid that magnetostrictive material are produced fully rises.
For achieving the above object, the present invention adopts following technical scheme: magnetostriction apparatus comprises a flux circuit, comprise rigidity magnetic conduction support in the described flux circuit, magnetostrictor, one side of rigidity magnetic conduction support or relative both sides are provided with openings, being provided with in the openings can free-moving rigidity magnetic conductive rod with respect to openings, magnetostrictor is formed closed frame by rigidity magnetic conductive rod and rigidity magnetic conduction support, also comprise permanent magnet in the described flux circuit, permanent magnet the two poles of the earth are respectively by rigidity magnetic conduction support and magnetostrictor, the rigidity magnetic conductive rod connects to form a flux circuit, this permanent magnet is positioned on the drive unit and by drive unit and drives, can be with respect to rigidity magnetic conduction support shuttling movement in the plane vertical with its inner magnet line of force.
Drive unit comprise by the power rotating shaft driven and with this concentric flywheel, flywheel is a non-magnet material, is fixed on the rotating shaft, permanent magnet is positioned at the flywheel outer; One or more permanent magnets are set on the flywheel, are provided with between the adjacent permanent magnet of an above permanent magnet flywheel at interval by non-magnet material; At least one flywheel is set on the rotating shaft; The device of a plurality of flywheels is set, and the permanent magnet on each flywheel partially overlaps along axial being projected as of rotating shaft; Magnetostrictor is provided with spring with the one or both sides that rigidity magnetic conduction support contacts.
Adopt the linear electric motors of above-mentioned magnetostriction apparatus to comprise magnetostriction apparatus, guide rail pole, the non-magnetic conductive rod of affixed rigidity on the rigidity magnetic conductive rod of magnetostriction apparatus, guide rail pole can contact with magnetostriction apparatus by the non-magnetic conductive rod of rigidity.Two flywheels are set on the rotating shaft of magnetostriction apparatus, and two respectively corresponding two rigidity magnetic conduction supports of flywheel are respectively clamp rigidity magnetic conduction support and flexible rigidity magnetic conduction support.Flexible rigidity magnetic conduction support one side is fixed, opposite side is fixedlyed connected with clamp rigidity magnetic conduction support by the non-magnetic conductive rod of rigidity, there are the gap in the non-magnetic conductive rod of rigidity and the guide rail pole of clamp rigidity magnetic conduction support, and its gap is less than the deformation quantity of magnetostrictor in the magnetostriction apparatus.Three flywheels are set on the rotating shaft of magnetostriction apparatus, and three respectively corresponding three rigidity magnetic conduction supports of flywheel are respectively two clamp rigidity magnetic conduction supports and a flexible rigidity magnetic conduction support.Flexible rigidity magnetic conduction support is fixed, and it is by the affixed two clamp rigidity magnetic conduction supports of the non-magnetic conductive rod difference of rigidity, and there are the gap in the non-magnetic conductive rod of rigidity and the guide rail pole of clamp rigidity magnetic conduction support, and its gap is less than the deformation quantity of magnetostrictor in the magnetostriction apparatus.Adopt the vibrating device of above-mentioned magnetostriction apparatus to comprise magnetostriction apparatus, guide rail pole, magnetostriction apparatus one side is fixed, and opposite side and guide rail pole are affixed by the non-magnetic conductive rod of rigidity.
One or both sides at magnetostrictor and rigidity magnetic conduction support are provided with spring, and spring can increase precompression makes magnetostrictor have better elongation and reset effect, realizes displacement accuracy more accurately thereby can reach; Can between the both sides of the rigidity magnetic conduction support that is connected with magnetostrictor non-magnetic conduction fixed lever be set, magnetostrictor is arranged in the framework of rigidity magnetic conduction support and non-magnetic conduction fixed lever composition, can prevent that like this magnetostrictor and rigidity magnetic conduction support break away from.Wherein according to the actual design needs, permanent magnet can be to have the permanent magnet that can produce uniform magnetic field intensity, can be to have the permanent magnet that can produce gradient magnetic intensity, can be to produce the permanent magnet combination with phase difference magnetic field.The mechanism that utilization can make permanent magnet produce rotation or shift action makes the effect that relative distance changes and makes magnetic field intensity change continuously and make the magnetostrictor generation stretch or contract between the relative magnetostrictor of permanent magnet, the clamp body, make and produce the effect that stress increases or dwindles between clamp body and the rigid support, thereby can realize utilizing the rectilinear motion of " clamp-flexible-clamp " mechanism action of inchworm motion mechanism design, make linear electric motors, this structure also can be used for making driver, transmission mechanism, electro-mechanical system, robot etc.These linear electric motors need not electromagnetism link and cooling system, have improved the flexible precision of magnetostrictive material, and then improve the motor precision of rectilinear motion and motor overall structure and controlling unit are simplified greatly.
Therefore, according to inchworm motion mechanism as shown in Figure 1, can make retractor device A ', B ', C ' three parts can realize six substep actions of inchworm motion when introducing the alternating action that a permanent magnetic field and this permanent magnetic field can produce sequential, the rectilinear motion motor under the permanent magnetic field effect just can be realized.
Compared with prior art, the invention has following advantage and technique effect:
1, can realize that the no thermosteresis magnetostriction that need not solenoid drives;
2, can realize not having the rigidity contact, the magnetic knot connection transmission of zerofriction force drives;
3, the inchworm motion that can realize need not three-way power control or need not power drives;
4, can conveniently realize being converted into rectilinear motion, or be converted into the straight-line transmission of another direction by the rectilinear motion of a direction by rotatablely moving;
5, can make vibration or stress wave source.
Description of drawings
Fig. 1 is the inchworm motion schematic diagram:
1) A chucking, B, C discharge schematic diagram;
2) A chucking, the B elongation, C discharges schematic diagram;
3) A, C tighten, the schematic diagram of B elongation simultaneously;
4) A discharges, the B elongation, and C tightens schematic diagram;
5) A discharges, and B shrinks, and C tightens schematic diagram;
6) A chucking; B, C discharge schematic diagram.
Fig. 2 is the flexible schematic diagram of magnetic elongation material under the permanent magnetic action;
Fig. 3 is embodiment 1 structural representation;
Fig. 4 is Fig. 3 magnetic elongation modular construction enlarged diagram;
Fig. 5 is the structural representation of rotating shaft and flywheel among the embodiment 1;
Fig. 6 is subjected to the magnetic field sequential chart of permanent magnet effect for A, B, C three parts among the embodiment 1;
Fig. 7 is embodiment 2 structural representations;
Fig. 8 is embodiment 3 structural representations.
Embodiment
Magnetostriction apparatus comprises a flux circuit, comprise rigidity magnetic conduction support 3 in the described flux circuit, magnetostrictor 1, one side or the relative both sides of rigidity magnetic conduction support 3 are provided with openings 10, being provided with in the openings 10 can free-moving rigidity magnetic conductive rod 8 with respect to openings 10, magnetostrictor 1 is formed closed frame by rigidity magnetic conductive rod 8 and rigidity magnetic conduction support 3, also comprise permanent magnet 7 in the described flux circuit, permanent magnet 7 the two poles of the earth are respectively by rigidity magnetic conduction support 3 and magnetostrictor 1, rigidity magnetic conductive rod 9 connects to form a flux circuit, this permanent magnet 7 is positioned on the drive unit and by drive unit and drives, can be with respect to rigidity magnetic conduction support 3 shuttling movements in the plane vertical with its inner magnet line of force.Drive unit comprise by power rotating shaft driven 6 and with this concentric flywheel 2, flywheel 2 is a non-magnet material, is fixed on the rotating shaft 6, permanent magnet 7 is positioned at flywheel 2 outers.
Embodiment 1
Adopt above-mentioned magnetostriction apparatus to can be made into linear electric motors, linear electric motors comprise magnetostriction apparatus and guide rail pole 4, the non-magnetic conductive rod 8 of affixed rigidity on the rigidity magnetic conductive rod 9 of magnetostriction apparatus, guide rail pole 4 can contact with magnetostriction apparatus by the non-magnetic conductive rod 8 of rigidity.Three flywheels 2 are set on the rotating shaft 6 of magnetostriction apparatus, and each flywheel 2 all is to be made of permanent magnet 7 (being labeled as a, b, c respectively) and non-permanent magnet E; Three flywheel 2 respectively corresponding three rigidity magnetic conduction supports 3, itself and magnetostrictor 1, rigidity magnetic conductive rod 9 are formed complete flux circuit; Because magnetostriction apparatus A, C can produce displacement with respect to magnetostriction apparatus B, so the width of openings 10 will be a bit larger tham half and flywheel 2 width sums of the largest deformation amount of magnetostrictor 1 among the magnetostriction apparatus B among magnetostriction apparatus A, the C, magnetostriction apparatus A, C are in the process that moves with respect to magnetostriction apparatus B like this, and the flywheel 2 among magnetostriction apparatus A, the C can be avoided and 3 collisions of rigidity magnetic conduction support.
Magnetostriction apparatus A, C can closely cooperate with guide rail pole 4 by the non-magnetic conductive rod 8 of rigidity respectively under the action of a magnetic field, the non-magnetic conductive rod 8 of rigidity has certain clearance with guide rail pole 4 during no the action of a magnetic field, is connected by magnetostriction apparatus B between magnetostriction apparatus A and the C.During assembling flywheel 2, make the relative position between permanent magnet a, b and the c that certain dislocation will be arranged, promptly T permanent magnet a, b, c when projecting to plane projection that can produce shown in Fig. 5 (c) overlaps as shown in Figure 4, abc represents that three permanent magnet projections overlap among its figure, ab and bc represent two coincidences of permanent magnet projection, and a, c represent that the permanent magnet projection does not overlap.Like this, the relative inchworm motion A of mechanism, B, C excitation can produce excitation sequential as shown in Figure 6 when permanent magnet a, b, c rotation.Magnetostriction apparatus closely cooperates when being subjected to the action of a magnetic field and between the guide rail pole 4, and guide rail pole 4 shows as locked; When magnetostriction apparatus is not subjected to the action of a magnetic field,, magnetostriction apparatus is separated with guide rail pole 4 because magnetostrictor 1 recovers deformation.For magnetostriction apparatus can be resiled when removing magnetic field fully, between magnetostrictor 1 and rigidity magnetic conduction support 3, spring 5 is set, shown in (a)-(c) among Fig. 4, different set-up modes can be arranged.Spring 5 can increase precompression can reset magnetostrictor 1 better, thereby can produce better flexible effect; For preventing that magnetostrictor 1 and rigidity magnetic conduction support 3 break away from, between the both sides of the rigidity magnetic conduction support 3 that is connected with magnetostrictor 1 non-magnetic conduction fixed lever 11 is set, magnetostrictor 1 is arranged in the framework of rigidity magnetic conduction support 3 and non-magnetic conduction fixed lever 11 compositions.
According to excitation sequential shown in Figure 6, it is as follows to finish a complete course of work:
1) when magnetostriction apparatus A, B, C do not have magnetic field, magnetostriction apparatus A, C separate with guide rail pole 4 respectively, and guide rail pole 4 does not move;
2) magnetic field is arranged as magnetostriction apparatus A, magnetostriction apparatus B, when C does not have magnetic field, magnetostriction apparatus A produces deformation and closely cooperates with guide rail pole 4, and magnetostriction apparatus B, C are indeformable, and guide rail pole 4 is mobile;
3) magnetic field is arranged as magnetostriction apparatus A, B, when magnetostriction apparatus C does not have magnetic field, magnetostriction apparatus A, B produce deformation, magnetostriction apparatus C is indeformable, the deformation that magnetostriction apparatus B produces elongation expands outwardly magnetostriction apparatus A and C, because magnetostriction apparatus C separates with guide rail pole 4, magnetostriction apparatus A produces deformation, and closely cooperate between the guide rail pole 4, will drive guide rail pole 4 jointly left straight line move;
4) magnetic field is arranged as magnetostriction apparatus A, B, C, magnetostriction apparatus A, B, C produce deformation, and magnetostriction apparatus A, C and guide rail pole 4 closely cooperate, and guide rail pole 4 shows as locking;
5) remove magnetic field as magnetostriction apparatus A, magnetostriction apparatus B, when C has magnetic field, magnetostriction apparatus A recovers deformation to be separated with guide rail pole 4, and magnetostriction apparatus B, C produce deformation, and guide rail pole 4 is mobile;
6) remove magnetic field as magnetostriction apparatus A, B, when magnetostriction apparatus C has magnetic field, magnetostriction apparatus A, B recover deformation, magnetostriction apparatus C produces deformation, magnetostriction apparatus B recovers deformation magnetostriction apparatus A and C is shunk inwards, because magnetostriction apparatus A separates with guide rail pole 4, magnetostriction apparatus C will drive guide rail pole 4 jointly left straight line move;
7) when magnetostriction apparatus A, B, C do not have magnetic field, magnetostriction apparatus begins to repeat above-mentioned workflow again.
When rotating shaft 6 rotates a circle, magnetostriction apparatus will make guide rail pole 4 advance for two steps; If rotating shaft 6 is rotated continuously, the single step moving displacement of guide rail pole 4 will be accumulated so, make guide rail pole 4 produce big stroke even unlimited stroke motion.Equally, if with rotating shaft 6 opposite spins, guide rail pole 4 also will produce counter motion, thereby guide rail pole 4 can produce the motion of advancing or retreating, and promptly linear electric motors are achieved.Rotating shaft 6 rotations can be adopted electric rotating machine even manually realize; This process also is one rotatablely moved and is converted into rectilinear motion.
Embodiment 2
Linear electric motors of the present invention can also be the structures of having only a clamp part and a telescopic section composition, i.e. magnetostriction apparatus B, C, and two flywheels 2 of corresponding setting, as shown in Figure 7.Be provided with on the rotating shaft 62, two flywheels 2 of two flywheels respectively with corresponding magnetostriction apparatus B, C in rigidity magnetic conduction support 3 and magnetostrictor 1, rigidity magnetic conductive rod 9 form complete flux circuit; Magnetostriction apparatus C and guide rail pole 4 closely cooperate under the action of a magnetic field, and magnetostriction apparatus C is by magnetostriction apparatus B control side-to-side movement.During assembling flywheel 2, make the relative position between permanent magnet b and the c that certain dislocation will be arranged, the i.e. projection that T permanent magnet b, c when projecting to a plane can produce as shown in the figure shown in (b) among Fig. 7 overlaps, and bc represents that the permanent magnet projection overlaps among its figure, and b, c represent that the permanent magnet projection does not overlap.Like this, when rotating, permanent magnet b, c can produce similar excitation sequential when relative magnetostriction apparatus B, C excitation as Fig. 6.Flywheel 2 and 3 collisions of rigidity magnetic conduction support in the process that moves for fear of magnetostriction apparatus C, the width of openings 10 will be a bit larger tham the largest deformation amount and the flywheel 2 width sums of magnetostrictor 1 among the magnetostriction apparatus B among the magnetostriction apparatus C.
Produce the sequential action of " elongation-clamp-elongation recovery-clamp discharges " in the time of producing " clamp-elongation-clamp release-recovery " or reverse rotation when rotating shaft 6 is rotated in the forward.At this moment, with rotating shaft 6 forward or backwards rotary rail bar 4 can be by forward or backwards " stranding " moving.
Embodiment 3
Adopt above-mentioned magnetostriction apparatus to can be made into a kind of vibrating device, as shown in Figure 8, only keep magnetostriction apparatus B, and telescoping mechanism B one end is fixed, the other end freely discharges; A flywheel 2 is set on rotating shaft 6, and rigidity magnetic conduction support 3 among flywheel 2 and the magnetostriction apparatus B and magnetostrictor 1, rigidity magnetic conductive rod 9 are formed complete flux circuit; Along with rotating shaft 6 rotations, can produce elongation and recovery when permanent magnet b acts on magnetostriction apparatus B so, when rotating shaft 6 high speed rotating, corresponding stretching frequency raises, so that produces stress wave at the free end of magnetostriction apparatus B by guide rail pole 4.This stress wave can be used as vibration generation source, also can be used for producing the body surface ripple, utilizes this ripple conduction can make straight line or electric rotating machine, even ultrasound electric machine.Flywheel 2 in this mechanism also can be substituted by a permanent magnet, but this permanent magnet requires and can back and forth get involved and away from (magnetostriction) magnetic circuit, produce vibration or stress wave along or high frequency reciprocal with the perpendicular direction of ripple conduction orientation.
The present invention is not limited to above-mentioned three kinds of execution modes, and its structure and permanent magnetism part can be arranged to different forms.Each flywheel 2 described in the present invention also can be respectively be made of more than one permanent magnet 7 (as a to permanent magnet a ' should be arranged) and non-permanent magnet E; And it is opposite that the polarity of two permanent magnets 7 is wanted, if promptly a (b, c are same) is the N-S utmost point; Then a ' (b ', c ' same) is the S-N utmost point; And separated by nonmagnetic body E between a, a ' (b, b ' and c, c ').Because magnetostrictor 1 is its elongation and the orientation independent in magnetic field when not having pre-magnetic bias, so when having two kinds of polarized magnet alternating actions, can make the magnetostriction doubling frequency; And eliminate the remanent magnetism in each comfortable magnetic circuit mutually, and alleviate or take out the magnetic hysteresis that two kinds of polarized magnets produce respectively return deviation in magnetostrictor 1, can make drive displacement more accurate like this.In addition, permanent magnet 7 on each flywheel 2 can also be equidirectional two or more (as two fan-shaped permanent magnets that are spaced apart from each other), corresponding dislocation structure when also being mixed with aforementioned single permanent magnet respectively, the motion magnetostriction apparatus will be by excitation more than twice or twice when rotating shaft 6 rotates a circle so, i.e. rotating shaft 6 guide rail pole 4 two step or the multisteps of will advancing that rotate a circle.
Required flywheel 2 can be set to permanent magnet 7 fully in the linear electric motors of the present invention, relative set pushes permanent magnet 7 or shift-out mechanism along the direction vertical with the direction of motion of guide rail pole 4, by control and by required sequential, can produce with flywheel 2 and rotate identical effect.
In addition, for making mechanism action steady, used in the present invention permanent magnet 7 also can be made the permanent magnet of certain magnetic field intensity gradient, otherwise be permanent magnet 7 have when applying permanent-magnet-field one by low-intensity magnetic field to high-intensity magnetic field increase magnetic field gradually or by strong to the weak process that weakens magnetic field gradually, avoid moment step excitation impact.Simultaneously, the shape of permanent magnet 7 and preparation each other in the shape of single permanent magnet 7 and the wheels, correspondence position relation can require to do corresponding change according to control timing requirement or exercise performance.
Be noted that at last: when the high frequency permanent-magnet-field, be that flywheel 2 needs under high speed rotating or the permanent magnet 7 high frequency reciprocating motion excitation situations, magnetostrictor 1 in the motor mechanism and the permeability magnetic material body that constitutes magnetic circuit accordingly all should be done the sheet processing to avoid producing eddy current and heating as far as possible.

Claims (12)

1. magnetostriction apparatus, it comprises a flux circuit, comprise rigidity magnetic conduction support in the described flux circuit, magnetostrictor, one side of rigidity magnetic conduction support or relative both sides are provided with openings, being provided with in the openings can free-moving rigidity magnetic conductive rod with respect to openings, magnetostrictor is formed closed frame by rigidity magnetic conductive rod and rigidity magnetic conduction support, it is characterized in that also comprising in the described flux circuit permanent magnet, permanent magnet the two poles of the earth are respectively by rigidity magnetic conduction support and magnetostrictor, the rigidity magnetic conductive rod connects to form a flux circuit, this permanent magnet is positioned on the drive unit and by drive unit and drives, can be with respect to rigidity magnetic conduction support shuttling movement in the plane vertical with its inner magnet line of force.
2. magnetostriction apparatus according to claim 1, it is characterized in that drive unit comprise by the power rotating shaft driven and with this concentric flywheel, flywheel is a non-magnet material, is fixed on the rotating shaft, permanent magnet is positioned at the flywheel outer.
3. magnetostriction apparatus according to claim 2 is characterized in that one or more permanent magnets are set on the flywheel, is provided with between the adjacent permanent magnet of an above permanent magnet flywheel by non-magnet material at interval.
4. magnetostriction apparatus according to claim 3 is characterized in that being provided with on the rotating shaft one or more flywheels.
5. magnetostriction apparatus according to claim 4 is characterized in that being provided with on the rotating shaft device of an above flywheel, and the permanent magnet on its each flywheel partially overlaps along axial being projected as of rotating shaft.
6. magnetostriction apparatus according to claim 5 is characterized in that with the one or both sides that rigidity magnetic conduction support contacts spring being set at magnetostrictor.
7. linear electric motors that adopt the described magnetostriction apparatus of the arbitrary claim of claim 1-6, it is characterized in that linear electric motors comprise magnetostriction apparatus, guide rail pole, the non-magnetic conductive rod of affixed rigidity on the rigidity magnetic conductive rod of magnetostriction apparatus, guide rail pole can contact with magnetostriction apparatus by the non-magnetic conductive rod of rigidity.
8. linear electric motors according to claim 7 is characterized in that on the rotating shaft of magnetostriction apparatus two flywheels being set, and two respectively corresponding two rigidity magnetic conduction supports of flywheels are respectively clamp rigidity magnetic conduction support and flexible rigidity magnetic conduction support.
9. linear electric motors according to claim 8, rigidity magnetic conduction support one side that it is characterized in that stretching is fixed, opposite side is affixed by non-magnetic conductive rod of rigidity and clamp rigidity magnetic conduction support, there are the gap in the non-magnetic conductive rod of rigidity and the guide rail pole of clamp rigidity magnetic conduction support, and its gap is less than the deformation quantity of magnetostrictor in the magnetostriction apparatus.
10. linear electric motors according to claim 7 is characterized in that on the rotating shaft of magnetostriction apparatus three flywheels being set, and three respectively corresponding three rigidity magnetic conduction supports of flywheels are respectively two clamp rigidity magnetic conduction supports and a flexible rigidity magnetic conduction support.
11. linear electric motors according to claim 10, the rigidity magnetic conduction support that it is characterized in that stretching is fixed, it is by the affixed two clamp rigidity magnetic conduction supports of the non-magnetic conductive rod difference of rigidity, there are the gap in the non-magnetic conductive rod of rigidity and the guide rail pole of clamp rigidity magnetic conduction support, and its gap is less than the deformation quantity of magnetostrictor in the magnetostriction apparatus.
12. vibrating device that adopts the described magnetostriction apparatus of the arbitrary claim of claim 1-6, it is characterized in that vibrating device comprises magnetostriction apparatus, guide rail pole, magnetostriction apparatus one side is fixed, and opposite side is fixedlyed connected by the non-magnetic conductive rod of rigidity with guide rail pole.
CN200710061674A 2007-04-05 2007-04-05 Magnetostriction apparatus as well as linear motor and vibrating device using the same Active CN100587992C (en)

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CN101207320B (en) * 2007-12-13 2010-06-02 上海交通大学 Fast linear electric motor
CN102983778B (en) * 2012-11-07 2015-08-26 上海交通大学 Based on the electric rotating machine of giant magnetostrictive material
CN103916043B (en) * 2014-04-14 2016-05-11 浙江理工大学 The iron gallium alloy converse magnetostriction driver that electric rotating machine drives and the method for use
CN103916042B (en) * 2014-04-14 2016-05-11 浙江理工大学 Iron gallium alloy tandem drive converse magnetostriction driver and using method
CN104493606B (en) * 2014-12-31 2017-02-22 上海交通大学 Processing machine tool and magnetostriction-based precise feeding driving device
CN105162354B (en) * 2015-08-27 2018-01-19 上海交通大学 Swing type micro machine based on giant magnetostrictive material
CN105406757B (en) * 2015-12-12 2017-04-19 西安交通大学 Rotary actuator based on piezoelectric crude fibers and slider-crank mechanism and actuating method thereof

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