CN110108896A - One kind being suitable for high speed rotation magnetic-suspension main-shaft speed measuring device - Google Patents
One kind being suitable for high speed rotation magnetic-suspension main-shaft speed measuring device Download PDFInfo
- Publication number
- CN110108896A CN110108896A CN201910569953.2A CN201910569953A CN110108896A CN 110108896 A CN110108896 A CN 110108896A CN 201910569953 A CN201910569953 A CN 201910569953A CN 110108896 A CN110108896 A CN 110108896A
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- suspension
- measuring device
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- 239000000725 suspension Substances 0.000 title claims abstract description 77
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000009414 blockwork Methods 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
Abstract
The invention discloses one kind to be suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, including fixed disk and magnetic-suspension main-shaft；Aperture in the middle part of the fixed disk, for accommodate across magnetic-suspension main-shaft；Fixed pan bottom is installed by main shaft speed measuring device；Main shaft speed measuring device includes code-disc and the servo motor that is fixed in motor container；Code-disc is sheathed on magnetic-suspension main-shaft；Motor container holder is installed on fixed pan bottom, and servo motor output shaft is connected with screw rod, and screw rod is driven to move up and down；Fixed on screw rod to be arranged a mobile sliding block, distance measuring sensor and photoelectric encoder is fixedly mounted in the side positioned at mobile sliding block；Distance measuring sensor and photoelectric encoder are located on same vertical plane, and the edge of code-disc is located at distance measuring sensor and photoelectric encoder between the two；Servo motor, code-disc, distance measuring sensor, photoelectric encoder are electrically connected with outer computer.
Description
Technical field
The invention belongs to the technical fields that magnetic suspension is tested the speed, and in particular to one kind is suitable for high speed rotation magnetic-suspension main-shaft and surveys
Speed variator.
Background technique
The measurement of the existing super-conductive magnetic suspension speed of mainshaft is the Hall sensor by being fixed on motor stator to carry out
Measurement, but the limit that tests the speed of Hall sensor is 6000r/min -7000r/min, for the magnetcisuspension of 7000r/min or more revolving speed
Floating spindle speed measurement is helpless, and photoelectric encoder can be good at making up the limitation of Hall sensor.In addition, superconduction
When working axial displacement occurs for magnetic suspension bearing, for the axial displacement and revolving speed for measuring main shaft, sensor position setting and master
Axis rotates coaxially.
And the measurement of the existing super-conductive magnetic suspension speed of mainshaft be the Hall sensor by being fixed on motor stator come into
Row measurement, but the revolving speed of superconduction flywheel is higher, the measurement of Hall sensor revolving speed is restricted；Also lack to main shaft central spindle simultaneously
The detection of displacement.
Summary of the invention
It is an object of the invention to be directed to above-mentioned deficiency in the prior art, provide a kind of suitable for high speed rotation magnetic suspension
Main shaft speed measuring device, it is above-mentioned to solve the problems, such as or improve.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
One kind being suitable for high speed rotation magnetic-suspension main-shaft speed measuring device comprising fixed disk and magnetic-suspension main-shaft；It is described solid
Aperture in the middle part of price fixing, for accommodate across magnetic-suspension main-shaft；Fixed pan bottom is installed by main shaft speed measuring device；
Main shaft speed measuring device includes code-disc and the servo motor that is fixed in motor container holder；Code-disc is sheathed on magnetic suspension master
On axis；Motor container holder is installed on fixed pan bottom, and servo motor output shaft is connected with screw rod, drives and moves down on screw rod
It is dynamic；Fixed on screw rod to be arranged a mobile sliding block, distance measuring sensor and photoelectric encoder is fixedly mounted in the side positioned at mobile sliding block；
Distance measuring sensor and photoelectric encoder are located on same vertical plane, and the edge of code-disc is located at distance measuring sensor and photoelectric encoder
Between the two；
Servo motor, code-disc, distance measuring sensor, photoelectric encoder are electrically connected with outer computer.
Preferably, fixed disk is hollow disk.
Preferably, motor container holder is mounted in fixed disk by screw.
Preferably, code-disc suspension is sheathed on main shaft, and keeps coaxial state with main shaft.
Preferably, the model ASDM-060130B of servo motor；The model lattice number 36 of code-disc, outer diameter 200；Ranging passes
The model TFMINI of sensor；The model GL5506 of photoelectric encoder.
A kind of control method suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, comprising:
Super-conductive magnetic suspension bearing at work, needs to move up certain distance reality Spot Cooling on magnetic-suspension main-shaft axial direction
Condition, when magnetic-suspension main-shaft moves up, distance measuring sensor is by the magnetic-suspension main-shaft axial displacement real-time transmission of acquisition to outside
Computer, outer computer according to preset value and actual acquisition to magnetic-suspension main-shaft axial displacement obtain error e, if error
E is greater than preset error value, then controls servo motor rotation, and drive mobile sliding block work to move up accordingly by screw rod；Until accidentally
When poor e is less than or equal to preset error value, then controls servo motor and stop operating；Master is measured by photoelectric encoder and code-disc simultaneously
The revolving speed of axis.
Preferably, further includes:
Super-conductive magnetic suspension bearing rotor decline capture magnetic flux, when magnetic-suspension main-shaft declines, distance measuring sensor is by the magnetic of acquisition
The magnetcisuspension that suspension main shaft axial displacement real-time transmission is arrived to outer computer, outer computer according to preset value and actual acquisition
Floating main shaft axial displacement obtains error e, if error e is greater than preset error value, controls servo motor rotation, and pass through screw rod
Mobile sliding block work is driven to move down accordingly；Until then controlling servo motor when error e is less than or equal to preset error value and stopping turning
It is dynamic；Meanwhile the revolving speed of magnetic-suspension main-shaft is measured by photoelectric encoder and code-disc.
It is provided by the invention to be suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, it has the advantages that
The present invention can be with the rotation and movement of magnetic-suspension main-shaft, the synchronous inspection for carrying out magnetic-suspension main-shaft displacement and revolving speed
It surveys, and mobile detection is synchronized according to the error e of displacement, the central spindle displacement of magnetic-suspension main-shaft can be effectively detected, with
And corresponding revolving speed, it is of great significance for the handling situations and later maintenance of magnetic-suspension main-shaft.
Detailed description of the invention
Fig. 1 is the structure chart suitable for high speed rotation magnetic-suspension main-shaft speed measuring device.
Fig. 2 is the main shaft speed measuring device structure chart suitable for high speed rotation magnetic-suspension main-shaft speed measuring device.
Fig. 3 is the error flow chart suitable for high speed rotation magnetic-suspension main-shaft speed measuring device.
1, magnetic-suspension main-shaft；2, code-disc；3, fixed disk；4, servo motor；5, distance measuring sensor；6, mobile sliding block；7, light
Photoelectric coder；8, screw rod；9, motor container holder.
Specific embodiment
A specific embodiment of the invention is described below, in order to facilitate understanding by those skilled in the art this hair
It is bright, it should be apparent that the present invention is not limited to the ranges of specific embodiment, for those skilled in the art,
As long as various change is in the spirit and scope of the present invention that the attached claims limit and determine, these variations are aobvious and easy
See, all are using the innovation and creation of present inventive concept in the column of protection.
According to one embodiment of the application, with reference to Fig. 1 and Fig. 2, this programme is suitable for high speed rotation magnetic-suspension main-shaft 1
Speed measuring device, including fixed disk 3 and magnetic-suspension main-shaft 1, fixed disk 3 are hollow disk, 3 middle part aperture of fixed disk, for accommodating
The magnetic-suspension main-shaft 1 passed through, magnetic-suspension main-shaft 1 are located at the center of aperture；Main shaft speed measuring device is installed in 3 bottom of fixed disk,
Speed measuring device is used to detect the central spindle displacement and corresponding revolving speed when magnetic-suspension main-shaft 1 moves up and down.
Main shaft speed measuring device is described in detail below
Main shaft speed measuring device includes servo motor 4, code-disc 2, distance measuring sensor 5 and photoelectric encoder 7.Wherein, servo electricity
Machine 4 is fixed in motor container holder 9, and motor container holder 9 is mounted on 3 bottom of fixed disk by screw.
The suspension of code-disc 2 is sheathed on main shaft, and keeps coaxial state with magnetic-suspension main-shaft 1, for measuring magnetic-suspension main-shaft 1
Revolving speed.
4 output shaft of servo motor is connected with screw rod 8, i.e., servo motor 4 can drive screw rod 8 to move up and down, on screw rod 8
Fixed to be arranged a mobile sliding block 6,8 movement of screw rod can be further driven to mobile sliding block 6 and move together.
Distance measuring sensor 5 and photoelectric encoder 7, distance measuring sensor 5 and photoelectricity is fixedly mounted in side positioned at mobile sliding block 6
Encoder 7 is located on same vertical plane, and the edge of code-disc 2 is located at distance measuring sensor 5 and photoelectric encoder 7 between the two.
Wherein, distance measuring sensor 5 (is based on the light flight time, by calculating transmitting light pulse and receiving time, obtains distance
Parameter) for detecting 1 lateral distance of magnetic-suspension main-shaft, and by the detection of front and back data twice, magnetic-suspension main-shaft 1 is obtained in cross
Upward displacement.
Servo motor 4, code-disc 2, distance measuring sensor 5, photoelectric encoder 7 are electrically connected with outer computer, code-disc 2,
Distance measuring sensor 5, photoelectric encoder 7 are respectively by the data transmission of each self-test into outer computer, and servo motor 4 is controlled
In outer computer.
Wherein, the model ASDM-060130B of servo motor 4；The model lattice number 36 of code-disc 2, outer diameter 200；Ranging passes
The model TFMINI of sensor 5；The model GL5506 of photoelectric encoder 7.
With reference to Fig. 3, according to one embodiment of the application, one kind being suitable for 1 speed measuring device of high speed rotation magnetic-suspension main-shaft
Control method, comprising:
When super-conductive magnetic suspension bearing at work, need to move up certain distance realization on 1 axial direction of magnetic-suspension main-shaft
Cool condition, when magnetic-suspension main-shaft 1 moves up, distance measuring sensor 5 is by the 1 axial displacement real-time transmission of magnetic-suspension main-shaft of acquisition
To outer computer, outer computer according to preset value and actual acquisition to 1 axial displacement of magnetic-suspension main-shaft obtain error
E controls the rotation of servo motor 4, and drive mobile sliding block 6 to make accordingly by screw rod 8 if error e is greater than preset error value
It moves up；Until then controlling servo motor 4 when error e is less than or equal to preset error value and stopping operating；Meanwhile at 4 turns of servo motor
When moving or not rotating, the revolving speed of main shaft is measured by photoelectric encoder 7 and code-disc 2.
When super-conductive magnetic suspension bearing rotor declines capture magnetic flux, when magnetic-suspension main-shaft 1 declines, distance measuring sensor 5 will be acquired
1 axial displacement real-time transmission of magnetic-suspension main-shaft to outer computer, outer computer is arrived according to preset value and actual acquisition
1 axial displacement of magnetic-suspension main-shaft obtain error e, if error e be greater than preset error value, control servo motor 4 rotation, and
Mobile sliding block 6 is driven to move down accordingly by screw rod 8；Until then controlling servo electricity when error e is less than or equal to preset error value
Machine 4 stops operating；Meanwhile when servo motor 4 is rotated or do not rotated, magnetic suspension is measured by photoelectric encoder 7 and code-disc 2
The revolving speed of main shaft 1.
The present invention can be achieved to detect with axis is synchronous, can efficient stable measure high-speed rotary main shaft revolving speed, while realizing main shaft
Axial displacement measurement.
Although being described in detail in conjunction with specific embodiment of the attached drawing to invention, should not be construed as to this patent
Protection scope restriction.In range described by claims, those skilled in the art are without creative work
The various modifications and deformation made still belong to the protection scope of this patent.
Claims (7)
1. one kind is suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, it is characterised in that: including fixed disk and magnetic-suspension main-shaft；
Aperture in the middle part of the fixed disk, for accommodate across magnetic-suspension main-shaft；The fixed pan bottom is installed by main shaft speed measuring device；
The main shaft speed measuring device includes code-disc and the servo motor that is fixed in motor container holder；The code-disc is sheathed on magnetcisuspension
On floating main shaft；The motor container holder is installed on fixed pan bottom, and servo motor output shaft is connected with screw rod, drives screw rod
It moves up and down；It is fixed on the screw rod to be arranged a mobile sliding block, ranging sensing is fixedly mounted positioned at the side of the mobile sliding block
Device and photoelectric encoder；The distance measuring sensor and photoelectric encoder are located on same vertical plane, and the edge of code-disc is located at survey
Between the two away from sensor and photoelectric encoder；
The servo motor, code-disc, distance measuring sensor, photoelectric encoder are electrically connected with outer computer.
2. according to claim 1 be suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, it is characterised in that: the fixation
Disk is hollow disk.
3. according to claim 1 be suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, it is characterised in that: the motor
Container holder is mounted in fixed disk by screw.
4. according to claim 1 be suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, it is characterised in that: the code-disc
Suspension is sheathed on main shaft, and keeps coaxial state with main shaft.
5. according to claim 1 be suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, it is characterised in that: the servo
The model ASDM-060130B of motor；The model lattice number 36 of code-disc, outer diameter 200；The model TFMINI of distance measuring sensor；
The model GL5506 of photoelectric encoder.
6. a kind of -5 any controlling party suitable for high speed rotation magnetic-suspension main-shaft speed measuring device according to claim 1
Method characterized by comprising
Super-conductive magnetic suspension bearing at work, needs to move up certain distance reality Spot Cooling item on magnetic-suspension main-shaft axial direction
Part, when magnetic-suspension main-shaft moves up, distance measuring sensor counts the magnetic-suspension main-shaft axial displacement real-time transmission of acquisition to outside
Calculation machine, outer computer according to preset value and actual acquisition to magnetic-suspension main-shaft axial displacement obtain error e, if error e
Greater than preset error value, then servo motor rotation is controlled, and drive mobile sliding block work to move up accordingly by screw rod；Until error
When e is less than or equal to preset error value, then controls servo motor and stop operating；Main shaft is measured by photoelectric encoder and code-disc simultaneously
Revolving speed.
7. the control method according to claim 6 suitable for high speed rotation magnetic-suspension main-shaft speed measuring device, feature exist
In, further includes:
Super-conductive magnetic suspension bearing rotor decline capture magnetic flux, when magnetic-suspension main-shaft declines, distance measuring sensor is by the magnetic suspension of acquisition
The magnetic suspension master that main shaft axial displacement real-time transmission is arrived to outer computer, outer computer according to preset value and actual acquisition
Axis axial displacement obtains error e, if error e is greater than preset error value, controls servo motor rotation, and drive by screw rod
Mobile sliding block work moves down accordingly；Until then controlling servo motor when error e is less than or equal to preset error value and stopping operating；Together
When, the revolving speed of magnetic-suspension main-shaft is measured by photoelectric encoder and code-disc.
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|---|---|---|---|
| CN201910569953.2A CN110108896B (en) | 2019-06-27 | 2019-06-27 | Speed measuring device suitable for high-speed rotating magnetic suspension main shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569953.2A CN110108896B (en) | 2019-06-27 | 2019-06-27 | Speed measuring device suitable for high-speed rotating magnetic suspension main shaft |
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| CN110108896A true CN110108896A (en) | 2019-08-09 |
| CN110108896B CN110108896B (en) | 2023-11-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111458531A (en) * | 2020-04-29 | 2020-07-28 | 华中科技大学 | Rotor displacement-based rotating speed monitoring system for magnetic suspension spindle |
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| CN110108896B (en) | 2023-11-24 |
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