CN206759226U - A kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control - Google Patents
A kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control Download PDFInfo
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- CN206759226U CN206759226U CN201720541047.8U CN201720541047U CN206759226U CN 206759226 U CN206759226 U CN 206759226U CN 201720541047 U CN201720541047 U CN 201720541047U CN 206759226 U CN206759226 U CN 206759226U
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- motor stator
- end cap
- piezo actuator
- stator end
- piezoelectric element
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Abstract
The utility model discloses a kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control.Including piezo actuator, vibrating sensor, vibrating controller and power amplifier, fixation is equipped with piezo actuator and vibrating sensor in motor stator end cover surface, the vibration signal of vibrating sensor detection collection motor stator is simultaneously sent to vibrating controller, vibrating controller driving is laid on the piezo actuator on motor stator end cap to change the dynamic characteristics of motor stator end cap, so as to realize that machinery and electric and magnetic oscillation and noise to motor stator carry out active control.The utility model can be to motor stator end cap vibration carry out active control, the vibration and noise for making motor significantly reduced.
Description
Technical field
Technical field of motors is the utility model is related to, motor stator end cap is shaken with piezoelectric element more particularly to one kind
The end cover structure of dynamic active control, is led using the vibration of all kinds of electric motor end caps of the piezo actuator to being worked with electromagnetic principle
The technology of dynamic control.
Background technology
All kinds of motors to be worked with electromagnetic principle, such as induction machine, magneto, switched reluctance machines, are current electricity
Nucleus equipment in energy transfer process, occupies an important position in national economy and daily life.
Motor is generally made up of the part such as rotor, motor stator, motor stator end cap and bearing, motor stator end cap
Both shaking for rotor was not only influenced whether for the support member of rotor, and the constraint component of motor stator, the vibration of electric motor end cap
It is dynamic, the vibration of motor stator is also resulted in, so vibration of the vibration of stator end cap to motor has important influence.
At present, to the vibration control of electric motor end cap, some passive control devices are generally all used, such as strengthen the thickness of end cap
Degree, the structure for optimizing electric motor end cap etc., these measures may obtain certain effect under the conditions of some are specific, but work as
After the rotating speed or working condition of motor change, the vibration of electric motor end cap is still extremely serious, it is difficult to fundamentally solves electricity
The vibration of machine and noise problem.
Utility model content
Development based on Active Vibration Control and piezo actuator, the utility model proposes one kind piezoelectric element to electricity
The end cover structure and its mode of machine stator end cap Active Vibration Control, the vibration of motor stator under the conditions of any can be led
Dynamic control, all kinds of motor stator end caps vibration that can be worked electromagnetic principle carries out active control, to reduce motor by machinery
And vibration and noise problem caused by electromagnetism.
The technical solution of the utility model is：
The utility model includes piezo actuator, and piezo actuator is fixed and is laid in motor stator end cover surface, is utilized
The piezo actuator in motor stator end cover surface is laid on to change the dynamic characteristics of motor stator end cap, is realized to motor
Machinery and electric and magnetic oscillation and noise carry out the purpose of active control.
Piezo actuator of the present utility model can be selectively laid on the partial end-face of motor stator end cap, can also
It is on whole end faces of motor stator end cap.
Described piezo actuator can be individual layer, bilayer or multilayer piezoelectric ceramic (PZT), piezopolymer (PVDF) or
The grand fibrous composite of person's piezoelectricity (MFC) structure or one or several kinds of combining structures therein.
Specific implementation also includes vibrating sensor, vibrating controller and power amplifier, and vibrating sensor is fixed on motor
On the end cap of stator, vibrating sensor is connected with vibrating controller, and vibrating controller connects through power amplifier and piezo actuator
Connect.
Described vibrating sensor is acceleration transducer, velocity sensor or strain transducer.
When multiple piezo actuators are connected with power amplifier, using independent mode, series system, parallel way or
One or several kinds of combinations in person's series-parallel system are attached.
Independent mode：Each piezo actuator is connected with power amplifier respectively.
Series system：Power amplifier is connected to after multiple piezo actuators are connected.
Parallel way：Power amplifier will be connected to after multiple piezo actuator parallel connections.
Series-parallel system：In parallel again or first parallel connection is connected to power after connecting again after multiple piezo actuators are first connected
Amplifier.
The shape of described piezo actuator is for rectangle or annular.Rectangular short side is axial along motor during laying.
Annular refers to annular of the arrangement around motor stator end cap end face full circumferences.
Described piezo actuator is fixed on inner surface or/and the outer surface of motor stator end cap.
The laying direction of the different piezo actuators can be with identical, can also be different.
Described piezo actuator radially, circumferentially or with radial direction into the direction of unspecified angle is laid along motor.
Described piezo actuator can be symmetrical laying or asymmetric laying.
It can be bonding method or other any feasible modes that described piezo actuator, which fixes paving mode,.
In order to be protected to piezo actuator, other materials, other materials are equipped with piezo actuator outer wrapping
Material specifically refers to the nonmetallic materials such as in general metal or plastics, rubber.
The beneficial effects of the utility model are：
The utility model can be vibrated by the piezoelectric element being arranged on motor stator end cap, to electric motor end cap
Vibration carries out active control, is significantly decreased the vibration of motor.
Brief description of the drawings
Fig. 1 is the profile that piezo actuator is laid on electric motor end cap outer surface.
Fig. 2 is the A direction views that piezo actuator is laid on electric motor end cap outer surface.
Fig. 3 is the profile that piezo actuator is laid on electric motor end cap inner surface.
Fig. 4 is the A direction views that piezo actuator is laid on electric motor end cap inner surface.
Fig. 5 is the connection figure that outside piezo actuator individually connects on motor stator end cap.
Fig. 6 is the connection figure after the piezo actuator part in parallel of outside on motor stator end cap.
Fig. 7 is the front view with electric machine structure of the present utility model.
Fig. 8 is the left view with electric machine structure of the present utility model.
Fig. 9 is with motor active control system structured flowchart of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
For the difference of motor stator structure, it is illustrated with the embodiment of two typical electric machine structures, but it is unlimited
In following examples：
Embodiment 1
As shown in Figures 1 and 2, the present embodiment includes piezo actuator 11 and motor stator end cap 12；Motor stator end
Lid 12 is provided with bearing hole 13 and the stationary plane 14 coordinated with motor stator.
Piezo actuator 11 is rectangle or annular, according to axial and circumferentially segmented be laid on the outer of motor stator end cap 12
On surface, so as to form a kind of stator end cover structure that progress active control can be vibrated to motor stator end cap.
Piezo actuator 11 can be individual layer, bilayer or multilayer piezoelectric ceramic (PZT), in the outside of piezo actuator 11 again
In general metal material is equipped with to be protected to piezo actuator 11.
Embodiment 2
As shown in figures 3 and 4, the present embodiment includes piezo actuator 11 and motor stator end cap 12.Motor stator end cap
Bearing hole 13 and the stationary plane 14 coordinated with motor stator are provided with 12.
Piezo actuator 11 is rectangle or annular, according to axial and/or circumferentially segmented be laid on motor stator end cap 12
Inner surface on, so as to form it is a kind of can to motor stator end cap vibrate carry out active control stator end cover structure.
Piezo actuator 11 can be the grand fibrous composite of piezoelectricity (MFC) structure, in the outside of piezo actuator 11 again
In general rubber nonmetallic materials are equipped with to be protected to piezo actuator 11.
The structure of motor 1 of this specific implementation is as shown in accompanying drawing 7 and Fig. 8, including rotor 10, is equipped with piezo actuator
11 front and rear cover 12a and 12b, front and back bearings 13a and 13b, terminal box 15, left and right footing 16a and 16b and motor stator 17.
Rotor 10 is fixed on front and rear cover 12a and 12b by front and back bearings 13a and 13b, is equipped with the front and rear of piezo actuator
End cap 12a and 12b are fixed on the both ends of motor stator 17, and motor stator 17 is fixed on pedestal by left and right lower margin 16a and 16b
On.
As shown in Figure 9, vibrating sensor 2 is set on motor 1, and motor 1 is externally provided with vibrating controller 3 and power amplifier
4.Vibrating sensor 2 is fixed on motor stator former and later two end caps 12a and 12b, to former and later two ends of measurement motor stator
The vibration of lid, and be connected with vibrating controller 3；Vibrating controller 3 is connected with power amplifier 4；Power amplifier 4 is with being arranged in
Several joints of piezo actuator 11 on stator 12 are connected.
For the connected mode of piezo actuator on motor stator 11, illustrate as shown in accompanying drawing 5 and Fig. 6：
As shown in figure 5, the both threads of each piezo actuator are formed 2n by the piezo actuator 11 on motor stator respectively
Individual joint a1+b1, a2+b3 ... an+bn, then power amplifier is each individually connected to, wherein n is the number of piezo actuator.
As shown in fig. 6, using the piezo actuator progress that several first are had into identical function in parallel or in series, formed
2k joint a1+b1, a2+b3 ... am+bm, wherein m are the number of piezo actuator branch road in parallel or in series.It is therein simultaneously
Connection or series connection may each be adjacent or jump.
Or the Hybrid connections mode that independent mode is combined with parallel way is carried out, form 2m joints a1+b1, a2+
b3,…am+bm, wherein m be the number of piezo actuator parallel branch with the number of the piezo actuator that is individually connected and.
Vibration on the end cap of 2 measurement motor stator of vibrating sensor 12, and signal is transferred to vibrating controller 3；Vibration
Controller 3 acts on former and later two ends of motor stator according to the distribution and connection of piezo actuator by power amplifier 4
Cover on piezo actuator 11a and 11b on 12a and 12b, driving is vibrated to change motor stator former and later two end caps 12a and 12b
Dynamic characteristics, with reach to motor stator former and later two end caps 12a and 12b vibration carry out active control purpose.
Claims (5)
- A kind of 1. end cover structure with piezoelectric element to motor stator end cap Active Vibration Control, it is characterised in that：Including fixation Piezo actuator, vibrating sensor (2), vibrating controller (3) and the power amplifier being laid in motor stator end cover surface (4), vibrating sensor (2) is fixed on the end cap of motor stator, and vibrating sensor (2) is connected with vibrating controller (3), vibration Controller (3) is connected through power amplifier (4) with piezo actuator (11).
- 2. a kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control according to claim 1, It is characterized in that：Described piezo actuator (11) is fixed on inner surface or/and the outer surface of motor stator end cap.
- 3. a kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control according to claim 1, It is characterized in that：Each piezo actuator (11) radially, circumferentially or with radial direction into the direction of unspecified angle is laid along motor.
- 4. a kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control according to claim 1, It is characterized in that：When multiple piezo actuators (11) are connected with power amplifier (4), using independent mode, series system, One or several kinds of combinations in parallel way or series-parallel system are attached.
- 5. a kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control according to claim 1, It is characterized in that：The shape of described piezo actuator (11) is for rectangle or annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541047.8U CN206759226U (en) | 2017-05-16 | 2017-05-16 | A kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541047.8U CN206759226U (en) | 2017-05-16 | 2017-05-16 | A kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759226U true CN206759226U (en) | 2017-12-15 |
Family
ID=60618362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720541047.8U Active CN206759226U (en) | 2017-05-16 | 2017-05-16 | A kind of end cover structure with piezoelectric element to motor stator end cap Active Vibration Control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206759226U (en) |
-
2017
- 2017-05-16 CN CN201720541047.8U patent/CN206759226U/en active Active
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