CN105763097B - The step piezoelectric actuator and method of function are measured containing magnetic railings ruler output displacement - Google Patents
The step piezoelectric actuator and method of function are measured containing magnetic railings ruler output displacement Download PDFInfo
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- CN105763097B CN105763097B CN201610285882.XA CN201610285882A CN105763097B CN 105763097 B CN105763097 B CN 105763097B CN 201610285882 A CN201610285882 A CN 201610285882A CN 105763097 B CN105763097 B CN 105763097B
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- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 230000005489 elastic deformation Effects 0.000 claims description 10
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/021—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors using intermittent driving, e.g. step motors, piezoleg motors
- H02N2/023—Inchworm motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/04—Constructional details
Abstract
The step piezoelectric actuator and start method of function are measured containing magnetic railings ruler output displacement, the actuator is made up of shell, end cap wedge ring unitary member, wedge shell flexible member unitary member, piezoelectric ring, rhombic drive, driving piezoelectric pile, take-off lever and magnetic railings ruler；Left and right clamping mechanism is arranged with actuator shell, there is the end cap wedge ring unitary member being connected with shell in left clamping mechanism, the boss side of enclosure is bonded with wedge shell flexible member unitary member, there is the piezoelectric ring that two ends are pressurized between end cap and wedge shell in addition；Right clamping mechanism structure posts reading magnetic assembly with left clamping mechanism, but its end cap is built-in；Drive mechanism is arranged between left and right clamping mechanism, and the left and right two ends of drive mechanism are connected to take-off lever, and right take-off lever surface is embedded with magnetic stripe to be constituted magnetic railings ruler with the reading magnetic assembly in right clamping mechanism；The present invention has the function of measurement output displacement in real time, it is easy to which reading, space utilization is fully reasonable, compact conformation.
Description
Technical field
The invention belongs to step-by-step movement piezoelectric actuator technical field, and in particular to one kind contains the measurement of magnetic railings ruler output displacement
The step piezoelectric actuator and start method of function.
Background technology
The operation principle of Piezoelectric Driving is the inverse piezoelectric effect being had based on piezoelectricity, and it has good linearity, easy to control, position
Move high resolution, good frequency response, noiseless, without electromagnetic interference, low voltage drive and be easy to miniaturization advantage.
Piezoelectric actuator is fine in aeronautical and space technology, optics, self-adapting intelligent structure, Active vibration suppression, ultraprecise
Many Key Scientific And Technical fields such as processing have a wide range of applications background.Wherein step-by-step movement actuator natural imitation ungraduated ruler earwig is creeped
Mode, by the accumulation to the small step pitch displacement of piezoelectric stack, can be achieved half step distance, theoretical stroke infinitely great, high-resolution
Accurate bidirectional step motion.Though conventional step-by-step movement actuator can complete the output of displacement, output can not be accurately measured in real time
The size of displacement.In addition, more than conventional step-by-step movement piezoelectric actuator by the way of energization clamper, and in the system that requires in power-off
In the case of remain to keep in output displacement application scenario, conventional actuator can not complete this generic task.
The content of the invention
In order to solve the problem of above-mentioned prior art is present, contain magnetic railings ruler output it is an object of the invention to provide one kind
The step piezoelectric actuator and start method of displacement measurement function, under the conditions of high-frequency drive, only one of which piezoelectric element is with defeated
Go out displacement together to move, other two piezoelectric elements remain stationary as and provide power-off clamper and the function for the unblock that is powered；This start
Utensil has the function of measurement output displacement in real time, it is easy to reading, and space utilization is fully, and compact structure can power off locking simultaneously
Realize two-way big displacement start.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
A kind of step piezoelectric actuator that function is measured containing magnetic railings ruler output displacement, including shell 2, be separately fixed at it is outer
The left clamping mechanism 14 and right clamping mechanism 15 of the inside left end of shell 2 and right-hand member；The left clamping mechanism 14 is by left end cap wedge ring one
Body part 3, left wedge shell flexible member unitary member 5 and left piezoelectric ring 4 are constituted, wherein left end cap wedge ring unitary member 3
Constituted by left end cap 3-1 and along the left wedge ring 3-2 that symmetry axis is separated by a distance at small end face, both are connected by cylinder ring
One is formed, left wedge shell flexible member unitary member 5 is made up of left wedge shell 5-1 and left cydariform flexible member 5-2, and both are smooth
It is connected to form one；The left wedge shell 5-1 is coated on left wedge ring 3-2 peripheries；Left end cap in left end cap wedge ring unitary member 3
3-1 and shell 2 are with multiple bolt connections being uniformly distributed circumferentially, on the left of the boss inside shell 2 and left wedge shell flexible member
Left cydariform flexible member 5-2 in unitary member 5 is bonded, after Standard is good, and side fills the left pressure for being attached to left end cap 3-1
Electric ring 4 is pressurized between left end cap 3-1 and left wedge shell 5-1 just, and left wedge ring 3-2 is extruded by left wedge shell 5-1 so that its internal diameter is embraced
Tight left take-off lever 1；The structure of the right clamping mechanism 15 is with left clamping mechanism 14, and the right clamping mechanism 15 is by right end cap wedge ring
Unitary member 10, right wedge shell flexible member unitary member 8 and right piezoelectric ring 9 are constituted, wherein right end cap wedge ring integration portion
Part 10 is constituted by right end cap 10-1 and along the right wedge ring 10-2 that symmetry axis is separated by a distance at small end face, and both pass through cylinder
Ring is connected to form one, and right wedge shell flexible member unitary member 8 is made up of right wedge shell 8-1 and right cydariform flexible member 8-2, and two
Person is smoothly connected to form one；The right wedge shell 8-1 is coated on right wedge ring 10-2 peripheries；In right end cap wedge ring unitary member 10
Right end cap 10-1 and shell 2 with multiple bolt connections being uniformly distributed circumferentially, dress posts reading magnetic group on the inside of right end cap 10-1
Part 11, read magnetic assembly 11 head can extend into the groove on the cylinder ring of right end cap wedge ring unitary member 10 so as to right output
Embedded magnetic stripe 12 keeps contact on bar 13, to realize boss right side and the right wedge inside the measurement function of real-time displacement, shell 2
Right cydariform flexible member 8-2 in shell flexible member unitary member 8 is bonded, after Standard is good, and side dress is attached to right-hand member
The right piezoelectric ring 9 for covering 10-1 is pressurized between right end cap 10-1 and right wedge shell 8-1 just, and right wedge ring 10-2 is squeezed by right wedge shell 8-1
Pressure so that its internal diameter holds right take-off lever 13 tightly；The actuator also includes the rhombic drive 6 being arranged in shell 2, the water chestnut
Driving piezoelectric pile 7 is provided with using interference fit in shape drive mechanism 6, to provide pretightning force, rhombus driving to driving piezoelectric pile 7
The left and right ends of mechanism 6 are connected to left take-off lever 1 and right take-off lever 13, and the left take-off lever 1 and right take-off lever 13 are distinguished
Through the inside of left clamping mechanism 14 and right clamping mechanism 15.
The left wedge ring 3-2 and right wedge ring 10-2 at the left and right two ends are after mounting respectively by left wedge shell 5-1 and right wedge shell 8-
1 extruding, both internal diameters respectively can hold left take-off lever 1 and right take-off lever 13 tightly, and reliable pincers are issued in powering-off state
Position.
The magnetic stripe 12 and reading magnetic assembly 11 constitute magnetic railings ruler, and wherein magnetic stripe 12 is embedded in the right surface of take-off lever 13, reads magnetic group
Part 11 is made up of magnetic head arrays, and its close dress is attached on the inside of right end cap 10-1, and magnetic head is remained with magnetic stripe 12 and contacted.Institute
The output end for stating magnetic stripe 12 is connected with miniature PC, and the displacement of actuator is converted into the displacement of magnetic stripe 12, and the displacement of magnetic stripe 12 turns
Analog output is turned to miniature PC, the displacement of actuator output can be so measured in real time.
The rigidity of the rhombic drive 6 can design to adjust by the geometric parameter of actuator, to ensure enough
Resilience pulling force.
When the size design of rhombic drive 6 is reasonable, it can be each passed through left cydariform elasticity during start
Element 5-2 and right cydariform flexible member 8-2, effectively reduction actuator axial dimension, make actuator configurations compact.
The method that the step piezoelectric actuator driving load of function is measured containing magnetic railings ruler output displacement, the left clamper machine
Structure 14 is after Standard is good, and left wedge ring 3-2 is extruded by left wedge shell 5-1 so that its internal diameter holds left take-off lever 1, side dress patch tightly
It is pressurized just between left end cap 3-1 and left wedge shell 5-1 in left end cap 3-1 left piezoelectric ring 4, left take-off lever 1 is in power-off and locked
Clamping state only；When left piezoelectric ring 4, which is powered up, to be extended, the thrust that left piezoelectric ring 4 is applied to left wedge shell 5-1 is delivered to left elasticity
Element 5-2, left flexible member 5-2 are squeezed and drive left wedge shell 5-1 to depart from left wedge ring 3-2, cause left wedge ring 3-2 to depart from left defeated
Rod 1, is now in released state；When driving the power-up elongation of piezoelectric pile 7, promote left take-off lever 1 or the driving of right take-off lever 13 negative
Carry, now thrust output, while rhombic drive 6 produces elastic deformation；When driving the power down of piezoelectric pile 7 retraction, rhombus machine
The resilience of structure 6 pulls left take-off lever 1 or right take-off lever 13 with driving load, now exports pulling force；The drive of the right clamping mechanism 15
Dynamic method is with left clamping mechanism 14.
The method of driving load described above, be specially：Original state is left piezoelectric ring 4, right piezoelectric ring 9 and driving pressure
Pile 7 is in power-down state, is now in clamping state；To make right take-off lever 13 export pulling force to the left, the first step, left pressure
Electric ring 4 is powered elongation so that left clamping mechanism 14 is unlocked；Second step, driving piezoelectric pile 7, which is powered, to be extended, and rhombic drive 6 is produced
Raw elastic deformation；3rd step, the left power down of piezoelectric ring 4, which bounces back, causes the left clamper of clamping mechanism 14；4th step, right piezoelectric ring 9 is powered
Elongation causes right clamping mechanism 15 to unlock；5th step, driving piezoelectric pile 7 power down retraction, the elastic deformation of rhombic drive 6 is extensive
Multiple, its restoring force pulls right take-off lever 13 to the step-length of left movement one, while magnetic railings ruler output displacement；6th step, right piezoelectric ring 9 falls
Electricity retraction causes the right clamper of clamping mechanism 15, returns to original state；Repeat step one to six, right take-off lever 13 is in a stepwise manner
To left movement driving load；To make right take-off lever 13 move right thrust output, the first step, right piezoelectric ring 9, which is powered to extending, to be caused
Right clamping mechanism 15 is unlocked；Second step, driving piezoelectric pile 7, which is powered to extending, promotes to the right the right driving load of take-off lever 13 to move right
One step-length, magnetic railings ruler output displacement, while rhombic drive 6 produces elastic deformation；3rd step, the right power down of piezoelectric ring 9 retraction
So that the right clamper of clamping mechanism 15；4th step, left piezoelectric ring 4 is powered elongation so that left clamping mechanism 14 is unlocked；5th step, driving
The power down of piezoelectric pile 7 bounces back, and the elastic deformation of rhombic drive 6 is recovered, and its restoring force makes left take-off lever 1 follow up to the right a step-length；
6th step, the left power down of piezoelectric ring 4, which bounces back, causes the left clamper of clamping mechanism 14, returns to original state；Repeat step one to six, it is right
Take-off lever 13 moves right driving load in a stepwise manner.
Compared to the prior art, the invention has the advantages that：
1) actuator output displacement of the present invention can in real time be measured by magnetic railings ruler, and precision is higher, without the highly difficult of personnel
Operation；Automaticity is high, can accurately obtain positional information, meet economic principle, cost is low, quality-high and inexpensive.
2) present invention is in output displacement, and only one driving piezoelectric pile 7 is together moved with output displacement, in stepping process
In left clamping mechanism 14 and right clamping mechanism 15 need not be driven together to move, therefore can be with higher step frequency drive ram
To improve output speed.
3) present invention has power-off clamper function.Left clamping mechanism 14, right clamping mechanism 15 are in left piezoelectric ring 4, right piezoelectricity
Ring 9 be powered elongation when unlock, and left piezoelectric ring 4, right piezoelectric ring 9 power-off retraction when clamper.Change general Inchworm type start
Device energization clamper and the present situation for powering off unblock.Power-off clamper function is demand common during common engineering is applied.
4) present invention can make it be each passed through left cydariform elasticity member in the rationally size of design rhombic drive 6
Start is kept during part 5-2 and right cydariform flexible member 8-2, such inside configuration space is fully utilized, the axial chi of actuator
It is very little to reduce, size and quality are greatly reduced, makes actuator configurations compact.
Brief description of the drawings
Fig. 1 is structural upright sectional view of the present invention.
Fig. 2 is side view cutaway drawing of the present invention.
Fig. 3 is right end cap wedge ring unitary member stereogram of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, Figure 2 and Figure 3, the present invention measures the step piezoelectric actuator of function containing magnetic railings ruler output displacement,
Including shell 2, it is separately fixed at the left clamping mechanism 14 and right clamping mechanism 15 of the inside left end of shell 2 and right-hand member；The left pincers
Position mechanism 14 is made up of left end cap wedge ring unitary member 3, left wedge shell flexible member unitary member 5 and left piezoelectric ring 4, wherein
The left wedge ring 3-2 groups that left end cap wedge ring unitary member 3 is separated by a distance by left end cap 3-1 and from small end face along symmetry axis
Into both are connected to form one by cylinder ring, and left wedge shell flexible member unitary member 5 is by left wedge shell 5-1 and left cydariform bullet
Property element 5-2 composition, both are smoothly connected to form one；Left end cap 3-1 and shell 2 in left end cap wedge ring unitary member 3
With multiple bolt connections being uniformly distributed circumferentially, with left wedge shell flexible member unitary member 5 on the left of the boss inside shell 2
In left cydariform flexible member 5-2 bond, after Standard is good, the left piezoelectric ring 4 that side dress is attached to left end cap 3-1 lucky exists
It is pressurized between left end cap 3-1 and left wedge shell 5-1, left wedge ring 3-2 is extruded by left wedge shell 5-1 so that its internal diameter holds left take-off lever tightly
1；The structure of the right clamping mechanism 15 is with left clamping mechanism 14, and the right clamping mechanism 15 is by right end cap wedge ring unitary member
10th, right wedge shell flexible member unitary member 8 and right piezoelectric ring 9 are constituted, and wherein right end cap wedge ring unitary member 10 is by right-hand member
Lid 10-1 and the right wedge ring 10-2 compositions being separated by a distance at small end face along symmetry axis, both connect to be formed by cylinder ring
One, right wedge shell flexible member unitary member 8 is made up of right wedge shell 8-1 and right cydariform flexible member 8-2, and both are smoothly connected
Form one；Right end cap 10-1 in right end cap wedge ring unitary member 10 and shell 2 are with multiple spiral shells being uniformly distributed circumferentially
Tether and connect, dress posts reading magnetic assembly 11 on the inside of right end cap 10-1, right end cap wedge ring integration portion can be stretched into by reading the head of magnetic assembly 11
So as to keep contacting with magnetic stripe 12 embedded on right take-off lever 13 in groove on the cylinder ring of part 10, to realize the survey of real-time displacement
The right cydariform flexible member 8-2 on the right side of the boss inside function, shell 2 and in right wedge shell flexible member unitary member 8 is measured to glue
Knot, after Standard is good, side dress is attached to right end cap 10-1 right piezoelectric ring 9 just in right end cap 10-1 and right wedge shell 8-1
Between be pressurized, right wedge ring 10-2 extrude by right wedge shell 8-1 so that the right take-off lever 13 of its internal diameter holding；The actuator also includes setting
Put to be provided with using interference fit in the rhombic drive 6 in shell 2, the rhombic drive 6 and drive piezoelectric pile 7,
To provide pretightning force to driving piezoelectric pile 7, the left and right ends of rhombic drive 6 are connected to left take-off lever 1 and right output
Bar 13, the left take-off lever 1 and right take-off lever 13 are each passed through the inside of left clamping mechanism 14 and right clamping mechanism 15.
As the preferred embodiment of the present invention, the left wedge ring 3-2 and right wedge ring 10-2 at the left and right two ends are after mounting
Extruded respectively by left wedge shell 5-1 and right wedge shell 8-1, both internal diameters respectively can hold left take-off lever 1 and right take-off lever 13 tightly,
Powering-off state is issued to reliable clamper.
As the preferred embodiment of the present invention, the magnetic stripe 12 and reading magnetic assembly 11 constitute magnetic railings ruler, wherein magnetic stripe 12
The embedded right surface of take-off lever 13, reads magnetic assembly 11 and is made up of magnetic head arrays, and its close dress is attached on the inside of right end cap 10-1, and magnetic
Head is remained with magnetic stripe 12 to be contacted.The output end of the magnetic stripe 12 is connected with miniature PC, and the displacement of actuator is converted into magnetic
The displacement of bar 12, the displacement of magnetic stripe 12 is converted into analog output to miniature PC, and actuator output can be so measured in real time
Displacement.
As the preferred embodiment of the present invention, the rigidity of the rhombic drive 6 can be by the geometry of actuator
Parameter designing is adjusted, to ensure enough resilience pulling force.
As the preferred embodiment of the present invention, when the size design of rhombic drive 6 is reasonable, it is in start process
In can be each passed through left cydariform flexible member 5-2 and right cydariform flexible member 8-2, can so reduce the axial direction of actuator significantly
Size, makes actuator configurations compact.
As shown in figure 1, measuring the method for the step piezoelectric actuator driving load of function, institute containing magnetic railings ruler output displacement
Left clamping mechanism 14 is stated after Standard is good, left wedge ring 3-2 is extruded by left wedge shell 5-1 so that its internal diameter holds left take-off lever tightly
1, side dress is attached to left end cap 3-1 left piezoelectric ring 4 and is pressurized just between left end cap 3-1 and left wedge shell 5-1, left take-off lever 1
Clamping state in power-off locking；When left piezoelectric ring 4, which is powered up, to be extended, the thrust that left piezoelectric ring 4 is applied to left wedge shell 5-1 is passed
Left flexible member 5-2 is delivered to, left flexible member 5-2 is squeezed and drives left wedge shell 5-1 to depart from left wedge ring 3-2, causes left wedge ring
3-2 departs from left take-off lever 1, is now in released state；When driving the power-up elongation of piezoelectric pile 7, left take-off lever 1 or right output are promoted
The driving load of bar 13, now thrust output, while rhombic drive 6 produces elastic deformation；When the driving power down of piezoelectric pile 7 retraction
When, the resilience of rhombus-mechanism 6 pulls left take-off lever 1 or right take-off lever 13 with driving load, now exports pulling force；The right clamper machine
The driving method of structure 15 is with left clamping mechanism 14.
The method to the driving load of the present invention is described in detail below：
Original state is that left piezoelectric ring 4, right piezoelectric ring 9 and driving piezoelectric pile 7 are in power-down state, is now in clamper
State；To make right take-off lever 13 export pulling force to the left, the first step, the elongation that is powered of left piezoelectric ring 4 causes left clamping mechanism 14 to solve
Lock；Second step, driving piezoelectric pile 7, which is powered, to be extended, and rhombic drive 6 produces elastic deformation；3rd step, the left power down of piezoelectric ring 4
Retraction causes the left clamper of clamping mechanism 14；4th step, right piezoelectric ring 9 is powered elongation so that right clamping mechanism 15 is unlocked；5th step,
The power down of piezoelectric pile 7 retraction is driven, the elastic deformation of rhombic drive 6 is recovered, its restoring force pulls right take-off lever 13 to left movement
One step-length, while magnetic railings ruler output displacement；6th step, the right power down of piezoelectric ring 9, which bounces back, causes the right clamper of clamping mechanism 15, returns to
Original state；Repeat step one to six, right take-off lever 13 is in a stepwise manner to left movement driving load；For make right take-off lever 13 to
Right movement output thrust, the first step, right piezoelectric ring 9 is powered elongation so that right clamping mechanism 15 is unlocked；Second step, drives piezoelectric pile
7 energization elongations promote to the right the right driving load of take-off lever 13 to move right a step-length, magnetic railings ruler output displacement, while rhombus drives
Mechanism 6 produces elastic deformation；3rd step, the right power down of piezoelectric ring 9, which bounces back, causes the right clamper of clamping mechanism 15；4th step, left piezoelectricity
Ring 4 is powered elongation so that left clamping mechanism 14 is unlocked；5th step, driving piezoelectric pile 7 power down retraction, the elasticity of rhombic drive 6
Recoverable force, its restoring force makes left take-off lever 1 follow up to the right a step-length；6th step, the left power down of piezoelectric ring 4, which bounces back, causes left clamper
The clamper of mechanism 14, returns to original state；Repeat step one to six, it is negative that right take-off lever 13 moves right driving in a stepwise manner
Carry.
Claims (6)
1. a kind of step piezoelectric actuator that function is measured containing magnetic railings ruler output displacement, it is characterised in that：Including shell (2),
It is separately fixed at the left clamping mechanism (14) and right clamping mechanism (15) of the internal left end of shell (2) and right-hand member；The left clamper machine
Structure (14) is made up of left end cap wedge ring unitary member (3), left wedge shell flexible member unitary member (5) and left piezoelectric ring (4),
The left side that wherein left end cap wedge ring unitary member (3) is separated by a distance by left end cap (3-1) and from small end face along symmetry axis
Wedge ring (3-2) is constituted, and both are connected to form one by cylinder ring, and left wedge shell flexible member unitary member (5) is by left wedge shell
(5-1) and left cydariform flexible member (5-2) are constituted, and both are smoothly connected to form one；The left wedge shell (5-1) is coated on left wedge
Ring (3-2) periphery；Left end cap (3-1) in left end cap wedge ring unitary member (3) is with shell (2) with multiple circumferentially uniform points
With the left cydariform elasticity in left wedge shell flexible member unitary member (5) on the left of the bolt connection of cloth, the internal boss of shell (2)
Element (5-2) is bonded, and after Standard is good, left wedge ring (3-2) is extruded by left wedge shell (5-1) so that its internal diameter is held tightly left defeated
Rod (1), the left piezoelectric ring (4) that now side dress is attached on left end cap (3-1), opposite side dress is attached on left wedge shell (5-1) is proper
Fortunately it is pressurized between left end cap (3-1) and left wedge shell (5-1)；The structure of the right clamping mechanism (15) is with left clamping mechanism
(14), the right clamping mechanism (15) is by right end cap wedge ring unitary member (10), right wedge shell flexible member unitary member (8)
With right piezoelectric ring (9) composition, wherein right end cap wedge ring unitary member (10) is by right end cap (10-1) and from small end face along right
Claim right wedge ring (10-2) composition that axle is separated by a distance, both are connected to form one by cylinder ring, right wedge shell flexible member
Unitary member (8) is made up of right wedge shell (8-1) and right cydariform flexible member (8-2), and both are smoothly connected to form one；It is described
Right wedge shell (8-1) is coated on right wedge ring (10-2) periphery；Right end cap (10-1) in right end cap wedge ring unitary member (10) with
Shell (2) is posted reading magnetic assembly (11), is read magnetic with multiple bolt connections being uniformly distributed circumferentially, right end cap (10-1) inner side dress
Component (11) head can extend into the groove on right end cap wedge ring unitary member (10) cylinder ring so as to right take-off lever
(13) embedded magnetic stripe (12) contact on, to realize the measurement function of real-time displacement, the internal boss right side of shell (2) and right wedge
Right cydariform flexible member (8-2) in shell flexible member unitary member (8) bonds, after Standard is good, right wedge ring (10-
2) extruded by right wedge shell (8-1) so that its internal diameter holds right take-off lever (13) tightly, now side dress be attached on right end cap (10-1),
Opposite side dress be attached to right piezoelectric ring (9) on right wedge shell (8-1) just between right end cap (10-1) and right wedge shell (8-1) by
Pressure；The actuator also includes using in the rhombic drive (6) being arranged in shell (2), the rhombic drive (6)
It is full of and is equipped with driving piezoelectric pile (7), provides pretightning force, the left and right two of rhombic drive (6) to driving piezoelectric pile (7)
End is connected to left take-off lever (1) and right take-off lever (13), and the left take-off lever (1) and right take-off lever (13) are each passed through a left side
The inside of clamping mechanism (14) and right clamping mechanism (15).
2. the step piezoelectric actuator according to claim 1 that function is measured containing magnetic railings ruler output displacement, its feature exists
In：The left wedge ring (3-2) and right wedge ring (10-2) at the left and right two ends are after mounting respectively by left wedge shell (5-1) and right wedge shell
The extruding of (8-1), both internal diameters respectively can hold left take-off lever (1) and right take-off lever (13) tightly, be issued in powering-off state
Reliable clamper.
3. the step piezoelectric actuator according to claim 1 that function is measured containing magnetic railings ruler output displacement, its feature exists
In：The magnetic stripe (12) and reading magnetic assembly (11) constitute magnetic railings ruler, wherein embedded right take-off lever (13) surface of magnetic stripe (12), reading magnetic
Component (11) is made up of magnetic head arrays, and its close dress is attached on the inside of right end cap (10-1), and magnetic head is protected all the time with magnetic stripe (12)
Hold contact；The output end of the magnetic stripe (12) is connected with miniature PC, and the displacement of actuator is converted into the displacement of magnetic stripe (12), magnetic
The displacement of bar (12) is converted into analog output to miniature PC, and the displacement of actuator output can be so measured in real time.
4. the step piezoelectric actuator according to claim 1 that function is measured containing magnetic railings ruler output displacement, its feature exists
In：The rigidity of the rhombic drive (6) can design to adjust by the geometric parameter of actuator, to ensure enough return
Elastic pulling force.
5. the step piezoelectric actuator according to claim 1 that function is measured containing magnetic railings ruler output displacement, its feature exists
In：When rhombic drive (6) size design is reasonable, it can be each passed through left cydariform flexible member during start
The axial dimension of (5-2) and right cydariform flexible member (8-2), effectively reduction actuator, makes actuator configurations compact.
6. the step piezoelectric actuator driving that function is measured containing magnetic railings ruler output displacement described in any one of claim 1 to 5
The method of load, it is characterised in that：The left clamping mechanism (14) is after Standard is good, and left wedge ring (3-2) is by left wedge shell (5-
1) extrude so that its internal diameter holds left take-off lever (1) tightly, the left piezoelectric ring (4) that side dress is attached to left end cap (3-1) now exists just
It is pressurized between left end cap (3-1) and left wedge shell (5-1), left take-off lever (1) is in the clamping state of power-off locking；When left piezoelectric ring
(4) during power-up elongation, the thrust that left piezoelectric ring (4) is applied to left wedge shell (5-1) is delivered to left flexible member (5-2), left elasticity
Element (5-2) crimp drives left wedge shell (5-1) to depart from left wedge ring (3-2), and left wedge ring (3-2) departs from left take-off lever (1), this
When be in released state；When driving piezoelectric pile (7) power-up elongation, left take-off lever (1) or right take-off lever (13) driving load are promoted,
Now thrust output, while rhombic drive (6) produces elastic deformation；When driving piezoelectric pile (7) power down retraction, rhombus machine
Structure (6) resilience pulls left take-off lever (1) or right take-off lever (13) with driving load, now exports pulling force；The right clamping mechanism
(15) driving method is with left clamping mechanism (14).
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