CN110133497A - A kind of motor multi-eccentric failure simulation method and device - Google Patents
A kind of motor multi-eccentric failure simulation method and device Download PDFInfo
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- CN110133497A CN110133497A CN201910266293.0A CN201910266293A CN110133497A CN 110133497 A CN110133497 A CN 110133497A CN 201910266293 A CN201910266293 A CN 201910266293A CN 110133497 A CN110133497 A CN 110133497A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Abstract
The present invention discloses a kind of motor multi-eccentric failure simulation method and device, axial sides along experiment electric motor are symmetrically arranged, the linear stepping motor of a left and right horizontal is connected on every side linear stepping motor bracket, the linear stepping motor of every side drives the linear stepping motor screw rod an of left and right horizontal to be axially moved, the sliding groove of every side connects one can be along the experiment electric motor bracket that sliding groove slides back and forth, the left and right ends of experiment electric motor axis are each passed through ipsilateral experiment electric motor bracket, the linear stepping motor screw rod of every side is fixedly connected with ipsilateral experiment electric motor bracket；The dynamic analog of a variety of fault of eccentricity such as the static fault of eccentricity of linear stepping motor realization, dynamic fault of eccentricity, symmetrical inclined fault of eccentricity and composite eccentric failure is driven by ARM control module, the degree for changing fault of eccentricity online by the mobile distance of On-line Control linear stepping motor screw rod, realizes the quantitative simulation of each fault of eccentricity degree.
Description
Technical field
The present invention relates to Diagnosing Faults of Electrical technical fields, specifically the dynamic analog device to motor multi-eccentric failure and
Method.
Background technique
In the institute of motor is faulty, mechanical failure accounts for 60%, and has 80% mechanical breakdown to will lead to motor bias,
It is therefore desirable to the on-line monitorings that the fault of eccentricity to motor carries out early stage, to take measures to improve the reliability of motor.Mesh
Before, for the simulation of the bearing fault of electromechanics class, the mode of impressed torque vibration is usually used to simulate bearing fault,
It is this to simulate bearing fault using pure mechanic structure, it is complicated for operation, and also also non-documents and materials were recorded for motor gas at present
The simulation of gap fault of eccentricity.
Rotor eccentricity failure accounts for significant proportion as a kind of most common failure in electrical fault, although to the rotor of motor
Fault of eccentricity diagnosis and on-line checking method class scheme it is more, but have no effective experimental provision to motor fault of eccentricity into
Row simulation, so that the fault of eccentricity diagnosis research of motor is difficult to deeply, the research especially to the diagnosis of motor dynamics fault of eccentricity.
Due to the failure generation of motor be all it is random, for the diagnosis for solving the problems, such as failure, making motor naturally-occurring, certain is specified former
Barrier has very big difficulty.
Summary of the invention
The purpose of the present invention is to propose to the analogy method and device of a kind of motor multi-eccentric failure, online change motor
Fault of eccentricity realizes fault type dynamic analog and fault degree simulation.
The simulator of motor multi-eccentric failure proposed by the present invention a kind of the technical solution adopted is that: the device is along test
The axial sides of motor are symmetrically arranged, and experiment electric motor left and right horizontal arrangement, the left and right sides bottom of the device is respectively one
Horizontal pedestal, the pedestal top of every side are fixedly connected with a vertical linear stepping motor bracket, the straight line stepping electricity of every side
The linear stepping motor of a left and right horizontal is respectively connected on machine support, the linear stepping motor of every side drives a left and right horizontal
Linear stepping motor screw rod be axially moved；The upper surface of the pedestal of every side is provided with the sliding groove of an anterior-posterior horizontal,
The sliding groove of every side connects one can be along the experiment electric motor bracket that sliding groove slides back and forth；The experiment electric motor axis of experiment electric motor
Left and right ends be each passed through the ipsilateral experiment electric motor bracket, the linear stepping motor screw rod of every side is fixedly connected with
The ipsilateral experiment electric motor bracket；A photoelectric sensor is respectively set between the pedestal and ipsilateral experiment electric motor bracket,
One photoelectric sensor is made of luminous component and receiving part, and a mobile sliding block one end is fixedly connected with experiment electric motor bracket,
The other end can stretch between ipsilateral luminous component and receiving part；Two linear stepping motors, photoelectric sensors connect
Connect ARM control module.
It is fixedly connected with an electromagnet stent on the experiment electric motor bracket of every side, electromagnet stent and ipsilateral
Linear stepping motor is located at the front and rear sides of experiment electric motor bracket, and an electromagnetic wire is fixedly connected on each electromagnetism body support frame
Circle, each electromagnetic coil are wound on a vertical electromagnetic core, and the lower end of each electromagnetic core connects with the sliding groove in left side
Touching；Each electromagnetic coil is all connected with ARM control module.
A kind of analogy method of the simulator of motor multi-eccentric failure proposed by the present invention is the technical solution adopted is that packet
It includes:
Step A:ARM control module controls the linear stepping motor walking of two sides simultaneouslyStep, L is linear stepping motor
The distance that every step is walked, the rotor center O of e motor and the eccentric distance e of stator center, the experiment electric motor bracket of two sides is corresponding
Eccentric distance e needed for sliding simultaneously on sliding groove, makes experiment electric motor be in quiet fault of eccentricity state；
Step B:ARM control module simultaneously control two sides linear stepping motor walk forward m step, the same time control after cycle T
The linear stepping motor of two sides processed is walked m step backward, then after cycle T, then controls the linear stepping motor of two sides forward simultaneously
M step of walking completes the simulation of dynamic fault of eccentricity repeatedly；
Step C:ARM control module control left side the linear stepping motor walk forward n step, the straight line stepping on right side
Motor is walked backwardStep, S be stator axial center point to motor one end bearing end center distance, α
It is the angle between armature spindle and stator axis, the experiment electric motor bracket of two sides is distinguished in the mutually opposite directions on corresponding sliding groove
Slide vertical shift distance, experiment electric motor is made to be in symmetrical inclined fault of eccentricity state；
Step D:ARM control module control left side linear stepping motor walk forward n step, the linear stepping motor on right side is backward
The n that walks is walked, and then controls the linear stepping motor of two sides while forward walking m step simultaneously, experiment electric motor is made to exist simultaneously static state
Eccentric and symmetrical inclined fault of eccentricity state.
The present invention by adopting the above technical scheme after advantage be: the present invention by ARM control module drive straight line stepping electricity
Machine is, it can be achieved that a variety of fault of eccentricity such as static fault of eccentricity, dynamic fault of eccentricity, symmetrical inclined fault of eccentricity and composite eccentric failure
Dynamic analog, distance that can be mobile by On-line Control linear stepping motor screw rod, the online degree for changing fault of eccentricity,
Realize the quantitative simulation of each fault of eccentricity degree.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of motor multi-eccentric failure dynamic analog device proposed by the present invention；
Fig. 2 is the assembling structure enlarged drawing of photoelectric sensor in Fig. 1；
Fig. 3 is the control block diagram of Fig. 1 shown device；
Fig. 4 is schematic illustration when motor has static fault of eccentricity；
Fig. 5 is that there are schematic illustrations when dynamic fault of eccentricity for motor；
Fig. 6 is that there are schematic illustrations when symmetrical inclined fault of eccentricity for motor；
Fig. 7 is that motor exists simultaneously static eccentric and symmetrical inclined bias schematic illustration；
The serial number and title of each component in attached drawing: 1. experiment electric motors；2. experiment electric motor axis；3. the hex nut of fixed motor；
4. experiment electric motor semi-circular seat；5. right side linear stepping motor bracket；6. right side linear stepping motor flange；7. right side is straight
Line electricity stepper；8. right side linear stepping motor screw rod；9. right side screw rod connecting flange；10. right side experiment electric motor bracket；
11. right side electromagnetic coil；12. right side electromagnet stent；13. right side electromagnetic core；14. right side pedestal；15. left side is straight
Line stepping motor bracket；16. left side linear stepping motor flange；17. left side linear stepping motor；18. left side straight line stepping
Motor screw；19. left side screw rod connecting flange；20. left side experiment electric motor bracket；21. left side electromagnetic coil；22. left side
Electromagnet stent；23. left side electromagnetic core；24. left base；25. photoelectric sensor；26. sliding groove；27. mobile slide
Block；28. photoelectric sensor luminous component；29. photoelectric sensor receiving part.
Specific embodiment
Referring to Fig. 1, the left and right horizontal of experiment electric motor 1 arrangement itself is seated on experiment electric motor semi-circular seat 4.The present invention one
Kind motor multi-eccentric failure dynamic analog device is symmetrically arranged along the axial sides of experiment electric motor 1, the structure and peace of two sides
Dress method is identical.Bottom at left and right sides of it is respectively horizontal positioned pedestal, is the identical left base 24 of structure respectively
And right side pedestal 14, each pedestal top are fixedly connected with vertical linear stepping motor bracket, are that left base 24 is fixed respectively
Connection left side linear stepping motor bracket 15, right side pedestal 14 is fixedly connected with right side linear stepping motor bracket 5.Left base
24, right side pedestal 14 semi-circular base 4 the left and right sides and be fixed together with semi-circular seat 4.
Left side linear stepping motor bracket 15 passes through the left side that left side linear stepping motor flange 16 is fixedly connected with left and right horizontal
Side linear stepping motor 17.Right side linear stepping motor bracket 5 passes through right side linear stepping motor flange 6 and is fixedly connected with left and right water
Flat right side linear stepping motor 7.
The sliding groove 26 of an anterior-posterior horizontal, sliding are had on the upper surface of left base 24 and right side pedestal 14
The central axis of slot 26 and experiment electric motor 1 is in spatial vertical.The top of the sliding groove 26 in left side be slidably connected left side experiment electric motor branch
Frame 20, the top of the sliding groove 26 on right side connect the right side experiment electric motor bracket 10 that is slidably connected, and experiment electric motor bracket can be right
It is slid back and forth on the sliding groove 26 answered.
The left and right ends of the experiment electric motor axis 2 of experiment electric motor 1 are each passed through ipsilateral left side experiment electric motor bracket 20 and the right side
Side experiment electric motor bracket 10 fixes the hexagonal of motor with front and rear sides after position to the left and right sides of Adjustment Tests motor 1 is symmetrical
Experiment electric motor 1 is fixed on experiment electric motor semi-circular seat 4 by nut 3,
Each built-in tapped rotor in left side linear stepping motor 17 and right side linear stepping motor 7, with interior spiral shell
8 phase of left side linear stepping motor screw rod 18 and right side linear stepping motor screw rod that the rotor of line is arranged with corresponding left and right horizontal
When engagement, left side linear stepping motor 17 and right side linear stepping motor 7 work, tapped rotor is driven to rotate, thus
Left side linear stepping motor screw rod 18, right side linear stepping motor screw rod 8 is driven to realize the linear movement of left and right directions respectively, i.e.,
The axial movement of screw rod.
Left side linear stepping motor screw rod 18 is stretched out from left side linear stepping motor 17, and passes through left side screw rod connection method
19 connection left side experiment electric motor bracket 20 of orchid.Right side linear stepping motor screw rod 8 is stretched out from right side linear stepping motor 7.And
Right side experiment electric motor bracket 10 is fixedly connected with by right side screw rod connecting flange 9.Left side screw rod connecting flange 19, right side screw rod connect
The installation thickness of acting flange 9 is bigger than the installation thickness of left side linear stepping motor flange 16, right side linear stepping motor flange 6,
Contact area when screw rod is connect with left side screw rod connecting flange 19 and right side screw rod connecting flange 9 can be increased.
Left side electromagnet stent 22, left side electromagnet stent 22 and left side are fixedly connected on left side experiment electric motor bracket 20
Linear stepping motor 17 is located at the front and rear sides of left side experiment electric motor bracket 20.Right side electromagnet stent 12 is fixed on right side
On experiment electric motor bracket 10, right side electromagnet stent 12 and right side linear stepping motor 7 are located at right side experiment electric motor bracket
10 front and rear sides.Left side electromagnet stent 22 is identical with the structure of right side electromagnet stent 12.
Left side electromagnetic coil 21 is fixedly connected on left side electromagnetism body support frame 22, left side electromagnetic coil 21 is wound on vertical left side
On electromagnetic core 23, the lower end of left side electromagnetic core 23 is in contact with the sliding groove 26 in left side.It is solid on right electromagnet bracket 12
Fixed connection right side electromagnetic coil 11.Right side electromagnetic coil 11 is wound on vertical right side electromagnetic core 13, right side electromagnetic core 13
Lower end be in contact with the sliding groove 26 in left side.
Referring back to Fig. 2, between left base 24 and left side experiment electric motor bracket 20, right side pedestal 14 and right side test electricity
A photoelectric sensor 25 is respectively set between machine support 10.Photoelectric sensor 25 is by 29 two parts group of luminous component 28 and receiving part
At being respectively fixedly connected with a mobile sliding block 27 on left side experiment electric motor bracket 20 and right side experiment electric motor bracket 10, mobile sliding block
27 are located at the underface of experiment electric motor axis 2, and are stretched outside between the luminous component 28 of photoelectric sensor 25 and receiving part 29.
Referring to Fig. 3, left side linear stepping motor 17, right side linear stepping motor 7 are each by corresponding driving interface electricity
Road connects ARM control module, controls left side linear stepping motor 17 by ARM control module and right side linear stepping motor 7 works.
By corresponding driving interface circuit connection ARM control module, ARM controls mould for left side electromagnetic coil 21 and right side electromagnetic coil 11
Block controls electromagnetic coil and is powered and powers off.Photoelectric sensor 25 connects ARM control module, photoelectric sensing by input interface circuit
Device 25 passes the signal to ARM control module.
Referring to fig. 4-7, rotating electric machine air gap eccentric centre is that the radial air gap length between a kind of stator 1, rotor 2 is non-uniform
Phenomenon all more or less exists in almost all of motor.According to non-uniform distribution characteristics, air gap eccentric centre can be divided into
Axial uniformly eccentric (static eccentric, dynamically eccentric) and axial uneven eccentric (symmetrical inclined bias) two kinds of fundamental types.Referring to
Shown in Fig. 4, when the center O of the rotor 2 and center O ' of stator 1 is there are eccentric distance e, and it is most stingy between rotor 2 and stator 1
When gap d is remained unchanged, show that motor has static eccentric phenomena.Referring to Fig. 5, as the center O of the rotor 2 and center O ' of stator 1
There are eccentric distance e, and when the minimal air gap d between rotor 2 and stator 1 constantly changes, and it is eccentric existing to show that motor has dynamic
As.Referring to Fig. 6, when the center O of rotor 2 is overlapped with the center O ' of stator 1, and the axis of rotor 2 is revolved around rotor center O (O ')
When turning α angle, showing motor, there are symmetrical inclined eccentric phenomenas.Referring to 7, when the center O and 1 center O ' of stator of rotor 2 exist partially
Heart distance e, the and when axis of rotor 2 is around center O ' the rotation alpha angle of stator 1, show motor exist simultaneously it is static it is eccentric with it is right
Claim tiltedly eccentric.
To it is static it is eccentric, dynamic is eccentric, symmetrical inclined is eccentric and exists simultaneously static bias moves with symmetrical inclined bias
Morphotype is quasi-.When left side linear stepping motor 17 and right side linear stepping motor 7 work, due to the every step of each linear stepping motor
The distance L that (i.e. a pulse) is walked is fixed, it is possible to determine that left side straight line is walked by the way that the number of trigger pulse is arranged
Into motor screw 18, the moving distance of right side linear stepping motor screw rod 8, can simulated machine bias degree.
Before carrying out dynamic simulation experiment, first has to the operation for the axis return origin for carrying out experiment electric motor 1: first being sentenced with eyes
Offset movable slider 27 is the front side or rear side positioned at photoelectric sensor 25, if before mobile sliding block 27 is located at photoelectric sensor 25
Side, then ARM control module control left side linear stepping motor 17 and right side linear stepping motor 7 invert simultaneously, drive left side straight
Line stepper motor screw rod 18, right side linear stepping motor screw rod 8 move backward simultaneously, to drive left side experiment electric motor bracket
20, right side experiment electric motor bracket 10 and left side electromagnetic core 23, right side electromagnetic core 13 move backward simultaneously.Work as photoelectric sensing
Device 25 generates rising edge of a pulse, and the signal of detection is sent to ARM control module, then the experiment electric motor axis 2 of experiment electric motor 1 returns at this time
To origin.Conversely, if mobile sliding block 27 is located at the rear side of photoelectric sensor 25, the control left side straight line stepping of ARM control module
Motor 17 and right side linear stepping motor 7 rotate forward simultaneously, and experiment electric motor axis 2 is made to return to origin.
After experiment electric motor axis 2 returns to origin, a variety of fault of eccentricity of experiment electric motor 1 are simulated:
The first: static eccentric simulation
Such as Fig. 4, stator 1,2 decentraction of rotor, for rotor 2 using itself geometry axle center O as rotary shaft, the position minimal air gap d is constant, belongs to
It is uniformly eccentric in air gap, by left side linear stepping motor screw rod 18, right side linear stepping motor screw rod 8 while forward or backward
It remains unchanged after mobile one section of identical distance to simulate, physical simulation method is as follows:
Step 1: controlling left side linear stepping motor 17 simultaneously by ARM control module, right side linear stepping motor 7 works, left side
Linear stepping motor screw rod 18, right side linear stepping motor screw rod 8 drive corresponding left side experiment electric motor bracket 20, right side respectively
Experiment electric motor bracket 10 its corresponding left side, right side sliding groove 26 on slide, until ARM control module obtain left and right two
Until the pulse signal of the photoelectric sensor 25 of side, the operation that experiment electric motor axis 2 returns to origin is completed, at this point, at experiment electric motor 1
In unfaulty conditions.
Step 2: because of the size representing fault degree of eccentric distance e, due to the every step of linear stepping motor (i.e. a pulse)
The distance L walked is fixed, therefore the step number that left side linear stepping motor 17, right side linear stepping motor 7 need to walk。
It controls left side linear stepping motor 17, the walking m step of right side linear stepping motor 7 simultaneously by ARM control module, left side can be realized
Experiment electric motor bracket 20, right side experiment electric motor bracket 10 slide required eccentric distance e simultaneously on its sliding groove 26, cause to try
Electricity-testing machine 1 is in the quiet fault of eccentricity state that fault degree is e.
Step 3: electromagnetic coil 21, right side electromagnetic coil 11 are powered on the left of being controlled simultaneously by ARM control module, keep its right
Left side electromagnetic core 23, the right side electromagnetic core 13 answered generate magnetism, and sliding groove 26 is sucked respectively, make left side experiment electric motor bracket
20, right side experiment electric motor bracket 10 is fixed on motionless on sliding groove 26, that is, completes the static fault of eccentricity mould that fault degree is e
It is quasi-.
Second: the eccentric simulation of dynamic
Such as Fig. 5, stator 1,2 decentraction of rotor, but rotor 2 with the geometry axle center O ' of stator 1 be rotary shaft, the position of minimal air gap d
Dynamic change is set, non-uniform air-gap bias is belonged to.Screw rod 18, right side linear stepping motor are driven by left side linear stepping motor
Screw rod 8 constantly vibrates mobile to simulate, physical simulation method forward or backward simultaneously with certain frequency are as follows:
Step 1: controlling left side linear stepping motor 17 simultaneously by ARM control module, right side linear stepping motor 7 works, difference
Left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 is driven to slide on its sliding groove 26, until ARM control module obtains
Until 25 pulse signal of photoelectric sensor for obtaining the left and right sides, the operation that experiment electric motor axis 2 returns to origin is completed, at this point, test
Motor 1 is in unfaulty conditions.
Step 2: the size representing fault degree of eccentric distance e, since the every step of linear stepping motor (i.e. a pulse) is walked
Distance L be fixed, therefore the step number that left side linear stepping motor 17, right side linear stepping motor 7 need to walk；So
Afterwards set institute's simulated failure dynamic mobile frequency, by left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 forward or
Move backward the primary period be set as T realization.Control left side linear stepping motor 17, right side straight line simultaneously by ARM control module
Stepper motor 7 walk forward m step, after the cycle T time, then by ARM control module simultaneously control left side linear stepping motor
17, the reversed m step of walking backward of right side linear stepping motor 7, then a left side is controlled simultaneously after the cycle T time, then by ARM control module
Side linear stepping motor 17, right side linear stepping motor 7 walk forward m step, it is repeatedly, constantly same by ARM control module
When control left side linear stepping motor 17, right side linear stepping motor 7 walk forward, reversely walk backward, that is, complete failure journey
The dynamic fault of eccentricity that degree is e is simulated.
The third: the simulation of symmetrical inclined bias
Such as Fig. 6, symmetrical inclined bias belongs to air gap axially non-uniform bias, passes through left side linear stepping motor screw rod 18, right side
Linear stepping motor screw rod 8 drives left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 different directions to the left and right respectively
Same distance is moved to simulate.Physical simulation method are as follows:
Step 1: controlling left side linear stepping motor 17, right side linear stepping motor 7 simultaneously by ARM control module, drive respectively
Left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 slide on its sliding groove 26, until ARM control module obtains a left side
Until right 25 pulse signal of two sides photoelectric sensor, the operation that experiment electric motor axis 2 returns to origin is completed, at this point, at experiment electric motor 1
In unfaulty conditions.
Step 2: the size representing fault degree of rotor axle offset stator axis angle [alpha], in Fig. 6, S is in the axial direction of stator
Heart point to motor one end bearing end center distance, in this way, the vertical range of bearing end off-centring stator axis is.Since the distance L that the every step of linear stepping motor (i.e. a pulse) is walked is fixed, left side straight line stepping electricity
The step number that machine 17, right side linear stepping motor 7 need to walk.Straight line stepping electricity in left side is controlled by ARM control module
Machine 17 is walked forward n step, the reversed n step of walking backward of right side linear stepping motor 7, can be realized left side experiment electric motor bracket 20,
Right side experiment electric motor bracket 10 is on its sliding groove 26 respectively to vertical shift distance needed for opposite both direction sliding, experiment electric motor 1 is caused to be in symmetrical inclined fault of eccentricity state.
Step 3: driving left side electromagnetic coil 23, right side electromagnetic coil 13 simultaneously by ARM control module, keep its corresponding
Left side electromagnetic core 23, right side electromagnetic core 13 generate magnetism and sliding groove 26 are sucked respectively, make left side experiment electric motor bracket 20, the right side
Side experiment electric motor bracket 10 is fixed on sliding groove 26, that is, completes the simulation of symmetrical inclined fault of eccentricity.
4th kind: existing simultaneously static eccentric and symmetrical inclined bias and simulate
Such as Fig. 7, try left side experiment electric motor bracket 20, right side by left side linear stepping motor 17, right side linear stepping motor 7
Electrical verification machine support 10 is moved forward or rearward one section of identical distance simultaneously, then control left side linear stepping motor 17, right side
Straight line stepping 7 make left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 simultaneously to the left and right different directions move it is identical away from
From simulate, physical simulation method are as follows:
Step 1: controlling left side linear stepping motor 17, right side linear stepping motor 7 simultaneously by ARM control module, drive respectively
Left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 slide on its sliding groove 26, until ARM control module obtains a left side
Until right 25 pulse signal of two sides photoelectric sensor, the operation that experiment electric motor axis 2 returns to origin is completed, at this point, at experiment electric motor 1
In unfaulty conditions.
Step 2: the compound size representing fault degree of eccentric distance e and rotor axle offset stator axis angle [alpha], in Fig. 7, S
Be stator axial center point to motor one end bearing end center distance, in this way, bearing end off-centring stator axis
Vertical range be, due to the distance L that the every step of linear stepping motor (i.e. a pulse) is walked be it is fixed, it is right
In symmetrical inclined bias, the step number that left side linear stepping motor 17, right side linear stepping motor 7 need to walk；Due to
The distance L that the every step of linear stepping motor is walked is fixed, therefore for static eccentric, left side linear stepping motor 17, right side are straight
The step number that line stepper motor 7 need to walk.Controlling left side linear stepping motor 17 by ARM control module makes left side test electricity
Machine support 20 is walked forward n step, and control right side linear stepping motor 7 makes the walking n step backward of right side experiment electric motor bracket 10, causes
Experiment electric motor 1 is in symmetrical inclined fault of eccentricity state.On this basis, left side straight line stepping is controlled by ARM control module simultaneously
Motor 17, right side linear stepping motor 7 make left side experiment electric motor bracket 20, right side experiment electric motor bracket 10 while the m that walks forward
Step causes experiment electric motor to be in and exists simultaneously static eccentric and symmetrical inclined fault of eccentricity state.
Step 3: driving left side electromagnetic coil 23, right side electromagnetic coil 13 simultaneously by ARM control module, keep its corresponding
Left side electromagnetic core 23, right side electromagnetic core 13 generate magnetism and sliding groove 26 are sucked respectively, make left side experiment electric motor bracket 20, the right side
Side experiment electric motor bracket 10 is fixed on sliding groove 26, that is, completes to exist simultaneously the static eccentric mould with symmetrical inclined fault of eccentricity
It is quasi-.
Claims (6)
1. a kind of motor multi-eccentric failure simulation device, the device are symmetrically arranged along the axial sides of experiment electric motor, test
Motor left and right horizontal arrangement, it is characterized in that: the left and right sides bottom of the device is respectively a horizontal pedestal, on the pedestal of every side
Side is fixedly connected with a vertical linear stepping motor bracket, connects one or so water on the linear stepping motor bracket of every side
Flat linear stepping motor, the linear stepping motor of every side drive the linear stepping motor screw rod an of left and right horizontal axially to transport
It is dynamic；The upper surface of the pedestal of every side is provided with the sliding groove (26) of an anterior-posterior horizontal, and the sliding groove (26) of every side connects
Connecing one can be along the experiment electric motor bracket that sliding groove (26) slide back and forth；The left and right ends of the experiment electric motor axis of experiment electric motor point
The experiment electric motor bracket that Chuan Guo be not ipsilateral, the linear stepping motor screw rod of every side are fixedly connected with the ipsilateral examination
Electrical verification machine support；A photoelectric sensor (25), a photoelectricity are respectively set between the pedestal and ipsilateral experiment electric motor bracket
Sensor (25) is made of luminous component (28) and receiving part (29), and mobile sliding block (27) one end is fixedly connected with test electricity
Machine support, the other end can stretch between ipsilateral luminous component (28) and receiving part (29)；Two linear stepping motors,
Photoelectric sensor (25) is all connected with ARM control module.
2. a kind of motor multi-eccentric failure simulation device according to claim 1, it is characterized in that: the test in every side
An electromagnet stent is respectively fixedly connected on electric machine support, electromagnet stent and ipsilateral linear stepping motor are located at test
The front and rear sides of electric machine support are fixedly connected with an electromagnetic coil on each electromagnetism body support frame, and each electromagnetic coil is wound on one
Vertical electromagnetic core, the lower end of each electromagnetic core are in contact with the sliding groove in left side (26)；Each electromagnetic coil connects
Connect ARM control module.
3. a kind of motor multi-eccentric failure simulation device according to claim 1, it is characterized in that: the linear stepping motor
The screw rod experiment electric motor bracket ipsilateral by flanged joint.
4. a kind of a kind of analogy method of motor multi-eccentric failure simulation device as described in claim 1, it is characterized in that including:
Step A:ARM control module controls the linear stepping motor walking of two sides simultaneouslyStep, L is that linear stepping motor is every
The distance that step is walked, the rotor center O of e motor and the eccentric distance e of stator center, the experiment electric motor bracket of two sides is in corresponding cunning
Eccentric distance e needed for sliding simultaneously on dynamic slot (26), makes experiment electric motor be in quiet fault of eccentricity state；
Step B:ARM control module simultaneously control two sides linear stepping motor walk forward m step, the same time control after cycle T
The linear stepping motor of two sides processed is walked m step backward, then is controlled the linear stepping motors of two sides simultaneously after cycle T and walked forward
M step completes the simulation of dynamic fault of eccentricity repeatedly；
Step C:ARM control module control left side the linear stepping motor walk forward n step, the straight line stepping on right side
Motor is walked backwardStep, S be stator axial center point to motor one end bearing end center distance, α
It is the angle between armature spindle and stator axis, the experiment electric motor bracket of two sides is on corresponding sliding groove (26) respectively to mutually reciprocal
Slide vertical shift distance in direction, experiment electric motor is made to be in symmetrical inclined fault of eccentricity state；
Step D:ARM control module control left side linear stepping motor walk forward n step, the linear stepping motor on right side is backward
The n that walks is walked, and then controls the linear stepping motor of two sides while forward walking m step simultaneously, experiment electric motor is made to exist simultaneously static state
Eccentric and symmetrical inclined fault of eccentricity state.
5. the analogy method of a kind of motor multi-eccentric failure simulation device according to claim 4, it is characterized in that: in step
A, before B, C and D, ARM control module controls two linear stepping motor work simultaneously, drives the corresponding test electricity
Machine support slides on corresponding sliding groove, until ARM control module obtains the pulse signal of the photoelectric sensor (25) of two sides
Until, experiment electric motor axis (2) is in origin.
6. the analogy method of a kind of motor multi-eccentric failure simulation device according to claim 4, it is characterized in that: in step
A, after C and D, it is fixedly connected with an electromagnet stent on the experiment electric motor bracket of every side, electromagnet stent and same
The linear stepping motor of side is located at the front and rear sides of experiment electric motor bracket, and an electricity is fixedly connected on each electromagnetism body support frame
Magnetic coil, each electromagnetic coil are wound on a vertical electromagnetic core, sliding groove of the lower end of each electromagnetic core with left side
(26) it is in contact；Each electromagnetic coil is all connected with ARM control module；ARM control module drives the electromagnetic coil of two sides simultaneously, makes
The electromagnetic core of two sides generates magnetism and sliding groove (26) is sucked respectively, and the experiment electric motor bracket of two sides is made to be fixed on sliding groove
(26) on.
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| CN201910266293.0A CN110133497B (en) | 2019-04-03 | 2019-04-03 | Motor multi-eccentricity fault simulation method and device |
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| CN112526340A (en) * | 2020-11-25 | 2021-03-19 | 同济大学 | Motor bearing eccentric fault simulation structure |
| CN112698206A (en) * | 2021-01-20 | 2021-04-23 | 哈尔滨工业大学（威海） | Rotating motor eccentric fault simulation mechanism and method |
| CN114333519A (en) * | 2022-01-07 | 2022-04-12 | 中国石油大学(华东) | Drilling motor fault simulation training platform and use method |
| CN115219897A (en) * | 2022-07-28 | 2022-10-21 | 常州博美医疗科技有限公司 | Motor eccentric force testing system and working method thereof |
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