CN110031759B - Ultra-high-speed propulsion motor rotor state monitoring system and monitoring method - Google Patents
Ultra-high-speed propulsion motor rotor state monitoring system and monitoring method Download PDFInfo
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- CN110031759B CN110031759B CN201910416625.9A CN201910416625A CN110031759B CN 110031759 B CN110031759 B CN 110031759B CN 201910416625 A CN201910416625 A CN 201910416625A CN 110031759 B CN110031759 B CN 110031759B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 6
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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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
- G01R31/343—Testing dynamo-electric machines in operation
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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
- G01R31/346—Testing of armature or field windings
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Abstract
The invention discloses a state monitoring system and a state monitoring method of a rotor of an ultra-high-speed propulsion motor, wherein the disclosed system comprises accelerometers which are respectively arranged at the right center position of the top of the rotor and are used for collecting vibration acceleration of the rotor, and displacement sensors which are respectively arranged at the four vertexes of the bottom of the rotor and in the front-back direction of the left side wall and the right side wall of the rotor and are used for collecting gap signals between the rotor and a track; the receiver module is used for receiving and processing the rotor signals acquired by the accelerometer and the displacement sensor; the wireless transmission module is used for transmitting the rotor signals acquired by the accelerometer and the displacement sensor to the receiver module; and the AD converter module is used for converting the analog signals transmitted by the wireless transmission module into digital signals. The invention collects the gap signal between the rotor and the track and the vibration acceleration signal of the rotor through the sensor module, and processes the gap signal and the vibration acceleration signal by the receiver module, thereby obtaining the state information of the rotor.
Description
Technical Field
The invention relates to the technical field of ultra-high-speed propulsion motors, in particular to a system and a method for monitoring the state of a rotor of an ultra-high-speed propulsion motor.
Background
In the process of researching the ultra-high-speed propulsion motor, the monitoring of the state of a motor rotor is an essential ring, and is an inherent requirement for developing the ultra-high-speed propulsion motor. Firstly, for an experimental platform, the active cell is a payload, the vertical vibration of the active cell under the ultra-high speed condition is very large, the measurement precision of a measured piece is directly influenced, and the state of the active cell directly influences the experimental result. Secondly, when the super-high-speed propulsion condition is met, the motion state of the rotor directly influences the super-high-speed realization and influences the traction control performance.
In view of this, research on a system and a method for monitoring the state of a rotor of an ultra-high-speed propulsion motor is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a system and a method for monitoring the state of a rotor of an ultra-high-speed propulsion motor, wherein a sensor module in the monitoring system is used for collecting attitude signals of the rotor in the motion process of the propulsion motor, a wireless transmission module is used for transmitting the collected real-time signals to a receiver module, and the real-time state signals of the rotor are obtained through processing of the receiver module, so that the monitoring of the motion state of the rotor is realized.
In order to solve the technical problems, the invention provides a state monitoring system of a rotor of a super-high-speed propulsion motor, which comprises:
The sensor module comprises accelerometers which are respectively arranged at the right center position of the top of the rotor and are used for collecting vibration acceleration of the rotor, and displacement sensors which are respectively arranged at the four vertexes of the bottom of the rotor and the front and back directions of the left and right side walls of the rotor and are used for collecting gap signals between the rotor and the track;
The receiver module is used for receiving and processing the rotor signals acquired by the accelerometer and the displacement sensor;
The wireless transmission module is used for transmitting the rotor signals acquired by the accelerometer and the displacement sensor to the receiver module;
and the AD converter module is used for converting the analog signals transmitted by the wireless transmission module into digital signals.
Preferably, the accelerometer is a micromechanical accelerometer.
Preferably, the displacement sensor is a laser displacement sensor.
Preferably, the AD converter module is a successive approximation AD converter.
Preferably, the wireless transmission module is a WI-FI transmission module.
Preferably, a digital filter is provided in the receiver module.
The method for monitoring the state of the rotor of the ultra-high-speed propulsion motor comprises the following steps of:
S1, installing the accelerometer and the displacement sensor at a position corresponding to a rotor of a propulsion motor and collecting a rotor vibration acceleration signal and a rotor attitude signal in the motion process of the propulsion motor in real time;
S2, transmitting the rotor vibration acceleration signals and the rotor attitude signals acquired in real time by the accelerometer and the displacement sensor to a receiver module through a wireless transmission module, and simultaneously converting analog signals in the transmission process into digital signals through an AD converter module;
And S3, the receiver module calculates and processes the received digital signals, so that state information of the rotor in the motion process of the propulsion motor is obtained.
Preferably, the mover posture signal in the step S1 includes a gap signal between four vertexes of a bottom of the mover and a bottom of the rail and a gap signal between a front-rear direction of left and right side walls of the mover and side walls of the rail, and the mover vibration acceleration signal includes a mover lateral vibration acceleration signal, a longitudinal vibration acceleration signal, and a vertical vibration acceleration signal.
Preferably, the specific implementation manner of the step S3 includes:
S31, filtering interference noise in the received digital signals through a digital filter in the receiver module;
S32, finding the self size of the rotor, and calculating the attitude angle, the rolling angle and the yaw angle of the rotor according to the self size of the rotor, the gap signals between four vertexes of the bottom of the rotor and the bottom of the track and the gap signals between the front and back directions of the left side wall and the right side wall of the rotor and the side wall of the track;
and S33, calculating the longitudinal acceleration, the transverse acceleration and the vertical acceleration of the rotor in the ground coordinate system according to the attitude angle, the rolling angle and the yaw angle of the rotor, and the transverse vibration acceleration signal, the longitudinal vibration acceleration signal and the vertical vibration acceleration signal of the rotor, which are obtained in the step S32, so as to obtain the state information of the rotor in the motion process of the propulsion motor.
Compared with the prior art, the invention has the beneficial technical effects that:
(1) The state monitoring system of the ultra-high-speed propulsion motor rotor has the advantages of simple structure, low cost and easy realization;
(2) The state monitoring system of the ultra-high-speed propulsion motor rotor can avoid electromagnetic interference to a great extent, and ensures the stability and reliability of data acquired by the sensor module;
(3) According to the invention, various noises and signals outside the characteristic frequency band are filtered or inhibited by adopting the digital filter, so that the proportion of the interference signal in the useful signal is reduced, and the signal-to-noise ratio in the characteristic frequency band is effectively improved;
(4) The method for monitoring the state of the rotor of the ultra-high-speed propulsion motor is characterized by being convenient, accurate and efficient by collecting the attitude signals of the rotor in the motion process to realize real-time monitoring of the state of the rotor.
Drawings
Figure 1 is a block diagram of a system for monitoring the state of a rotor of an ultra-high speed propulsion motor according to the present invention,
Figure 2 is a schematic diagram of the layout of the sensor module in the ultra-high speed propulsion motor rotor state monitoring system of the invention,
FIG. 3 is a schematic view of the attitude angle of a rotor in the rotor state monitoring system of the ultra-high-speed propulsion motor,
Figure 4 is a left side view of figure 3,
Figure 5 is a front view of figure 3,
Figure 6 is a top view of figure 3,
Figure 7 is a flow chart of a method for monitoring the state of a rotor of an ultra-high speed propulsion motor,
Fig. 8 is a flow chart of the calculation process performed by the receiver module on the received digital signal in the present invention.
In the figure: 1. accelerometer, displacement sensor, wireless transmission module, 4 AD converter module, 5 receiver module, 6 tracks.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 3, the direction perpendicular to the paper surface is outward to the left, the direction perpendicular to the paper surface is inward to the right, the direction perpendicular to the paper surface is upward, the direction perpendicular to the paper surface is downward, the direction perpendicular to the paper surface is leftward to the front, and the direction perpendicular to the paper surface is rightward to the rear.
As shown in fig. 1 and 2, a state monitoring system for a super-high-speed propulsion motor comprises:
the sensor module comprises an accelerometer 1 which is respectively arranged at the right center position of the top of the rotor and is used for collecting vibration acceleration signals of the rotor, and a displacement sensor 2 which is respectively arranged at the four vertexes of the bottom of the rotor and in the front-back direction of the left side wall and the right side wall of the rotor and is used for collecting gap signals between the rotor and a track;
a receiver module 5 for receiving and processing the rotor signals acquired by the accelerometer and the displacement sensor;
The wireless transmission module 3 is used for transmitting the rotor signals acquired by the accelerometer and the displacement sensor to the receiver module;
the AD converter module 4 is configured to convert the analog signal transmitted by the wireless transmission module into a digital signal.
In this embodiment, the mover monitoring system collects the transverse vibration acceleration signal, the longitudinal vibration acceleration signal and the vertical vibration acceleration signal of the mover by using the accelerometer 1 arranged on the mover, collects the gap signals between the four vertexes at the bottom of the mover and the track 6 by using the displacement sensor 2, converts the collected real-time analog signals into digital signals by using the AD converter module 4, and transmits the digital signals to the receiver module 5 for processing under the action of the wireless transmission module 3, thereby obtaining the state information of the mover, realizing the real-time monitoring of the mover in the motion process of the propulsion motor, and having the characteristics of simple structure, lower cost and easy realization. In this embodiment, since the three accelerometers 1 are respectively located in the lateral direction of the center position of the top of the mover, in the longitudinal direction of the center position of the top of the mover and in the vertical direction of the center position of the top of the mover, the three accelerometers 1 are overlapped, so that only one accelerometer 1 can be seen from fig. 2; the displacement sensors 2 arranged on the four vertexes of the bottom of the rotor are used for collecting gap signals between the bottom of the rotor and the bottom of the track 6, and the displacement sensors 2 arranged on the left and right side walls of the rotor in the front-back direction are used for collecting gap signals between the side walls of the rotor and the side walls of the track 6.
As shown in fig. 1 and 2, the accelerometer 1 is a micromechanical accelerometer.
As shown in fig. 1 and 2, the displacement sensor 2 is a laser displacement sensor.
As shown in fig. 1, the AD converter module 4 is a successive approximation AD converter. In this embodiment, the time delay of successive approximation type AD converter is little, and conversion efficiency is high, and interference killing feature is strong moreover, has guaranteed that the analog signal that the sensor module gathered can accurate high-efficient conversion be the digital signal.
As shown in fig. 1, the wireless transmission module 3 is a WI-FI transmission module. In the embodiment, the WI-FI transmission is fast and long in distance, and the interference resistance in the transmission process is strong, so that the stable and reliable transmission of the digital signals is effectively ensured.
As shown in fig. 1, a digital filter is provided in the receiver module 5. In this embodiment, the receiver module 5 is provided with a digital filter, and various noise and signals outside the characteristic frequency band in the digital signal are filtered or suppressed by adopting a digital filtering technology, so that the specific gravity of the interference signal in the useful signal is effectively reduced, and the signal-to-noise ratio in the characteristic frequency band is greatly improved.
As shown in fig. 7, a method for monitoring the state of a rotor of an ultra-high-speed propulsion motor, comprising the above system for monitoring the state of a rotor of an ultra-high-speed propulsion motor, comprises the following steps:
S1, installing the accelerometer and the displacement sensor at a position corresponding to a rotor of a propulsion motor and collecting a rotor vibration acceleration signal and a rotor attitude signal in the motion process of the propulsion motor in real time;
S2, transmitting the rotor vibration acceleration signals and the rotor attitude signals acquired in real time by the accelerometer and the displacement sensor to a receiver module through a wireless transmission module, and simultaneously converting analog signals in the transmission process into digital signals through an AD converter module;
And S3, the receiver module calculates and processes the received digital signals, so that state information of the rotor in the motion process of the propulsion motor is obtained.
As shown in fig. 7 and 8, the mover posture signal in the step S1 includes a gap signal between four vertexes of the bottom of the mover and the bottom of the rail and a gap signal between the front-rear direction of the left and right side walls of the mover and the side walls of the rail, and the mover vibration acceleration signal includes a mover lateral vibration acceleration signal, a longitudinal vibration acceleration signal, and a vertical vibration acceleration signal.
As shown in fig. 8, the specific implementation manner of step S3 includes:
S31, filtering interference noise in the digital signals through a digital filter in the receiver module;
S32, finding the self size of the rotor, and calculating the attitude angle, the rolling angle and the yaw angle of the rotor according to the self size of the rotor, the gap signals between four vertexes of the bottom of the rotor and the bottom of the track and the gap signals between the front and back directions of the left side wall and the right side wall of the rotor and the side wall of the track;
and S33, calculating the longitudinal acceleration, the transverse acceleration and the vertical acceleration of the rotor in the ground coordinate system according to the attitude angle, the rolling angle and the yaw angle of the rotor, and the transverse vibration acceleration signal, the longitudinal vibration acceleration signal and the vertical vibration acceleration signal of the rotor, which are obtained in the step S32, so as to obtain the state information of the rotor in the motion process of the propulsion motor.
In this embodiment, the dimensions of the mover include the length, width and height of the mover.
In order to further illustrate the principles and technical effects of the present invention, a description will be given below with reference to a specific embodiment.
As shown in fig. 2 to 6, for the sake of calculation, assuming that the mover is a regular small block, the mover is positive upward, rightward and clockwise from the front, the gap value a between the front left vertex of the mover bottom and the bottom of the rail, the gap value b between the front right vertex of the mover bottom and the bottom of the rail, the gap value c between the rear left vertex of the mover bottom and the bottom of the rail, and the gap value d between the rear right vertex of the mover bottom and the bottom of the rail, the pitch angle θ of the mover at this time can be expressed by the formula:
θ＝arcsin{(H Front part -H Rear part (S) )/P} (1)
in the formula (1), P represents the length of the mover, Represents the gap value between the midpoint of the bottom of the front side of the mover and the bottom of the track,/>A gap value between the midpoint of the bottom of the rear side of the rotor and the bottom of the track is represented;
the roll angle phi of the mover at this time can be expressed by the formula:
in the formula (2), Q represents the width of the mover, Represents the gap value between the midpoint of the left bottom of the mover and the bottom of the track,/>A gap value between the midpoint of the bottom of the right side of the rotor and the bottom of the track is represented;
the yaw angle ψ of the mover at this time can be expressed by the formula:
ψ＝arcsin[(n-m)/P] (3)
In the formula (3), n represents a gap value between the front side of the left side wall of the mover and the side wall of the rail, and m represents a gap value between the rear side of the left side wall of the mover and the side wall of the rail.
If the longitudinal acceleration of the mover in the ground coordinate system is β, the lateral acceleration is γ, and the vertical acceleration is λ, the mover longitudinal acceleration β (i.e., the acceleration in the horizontal forward direction of the mover) in the ground coordinate system can be obtained from the mover posture information obtained by the formulas (1), (2), and (3) and the mover lateral vibration acceleration, the longitudinal vibration acceleration, and the vertical vibration acceleration acquired by the accelerometer, which can be expressed by the following formulas:
β＝(Ax×cosθ-Az×cosφ×sinθ)×cosψ (4)
In the formula (4), a x represents a lateral vibration acceleration of the mover, and a z represents a vertical vibration acceleration of the mover;
the mover lateral acceleration γ (i.e., the acceleration in the horizontal rightward direction of the mover) in the ground coordinate system can be expressed by the formula:
γ＝(Ay×cosφ-Az×cosθ×sinφ)×cosψ (5)
In the formula (5), a y represents a longitudinal vibration acceleration of the mover;
the vertical acceleration λ of the mover (i.e., the acceleration in the vertical upward direction of the mover) in the ground coordinate system can be expressed by the formula:
λ＝Ax×sinθ+Az×cosθ×cosφ (6)；
The state information of the rotor at the moment can be obtained by the formula (4), the formula (5) and the formula (6), so that the real-time monitoring of the state of the rotor of the ultra-high-speed propulsion motor is realized.
The state monitoring system and the state monitoring method for the ultra-high-speed propulsion motor provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (8)
1. A system for monitoring the state of a rotor of a super-high-speed propulsion motor, comprising:
The sensor module comprises accelerometers which are respectively arranged at the right center position of the top of the rotor and are used for collecting vibration acceleration of the rotor, and displacement sensors which are respectively arranged at the four vertexes of the bottom of the rotor and the front and back directions of the left and right side walls of the rotor and are used for collecting gap signals between the rotor and the track;
The receiver module is used for receiving and processing the rotor signals acquired by the accelerometer and the displacement sensor;
The wireless transmission module is used for transmitting the rotor signals acquired by the accelerometer and the displacement sensor to the receiver module;
the AD converter module is used for converting the analog signals transmitted by the wireless transmission module into digital signals;
the AD converter module is a successive approximation type AD converter.
2. The ultra-high speed propulsion motor rotor state monitoring system of claim 1, wherein the accelerometer is a micromechanical accelerometer.
3. The ultra-high speed propulsion motor mover condition monitoring system of claim 2, wherein the displacement sensor is a laser displacement sensor.
4. The ultra-high speed propulsion motor rotor state monitoring system of claim 3, wherein the wireless transmission module is a WI-FI transmission module.
5. The ultra-high speed propulsion motor rotor state monitoring system of claim 4, wherein a digital filter is provided in the receiver module.
6. A method for monitoring the state of a rotor of a super-high-speed propulsion motor, comprising the step of:
S1, installing the accelerometer and the displacement sensor at a position corresponding to a rotor of a propulsion motor and collecting a rotor vibration acceleration signal and a rotor attitude signal in the motion process of the propulsion motor in real time;
S2, transmitting the rotor vibration acceleration signals and the rotor attitude signals acquired in real time by the accelerometer and the displacement sensor to a receiver module through a wireless transmission module, and simultaneously converting analog signals in the transmission process into digital signals through an AD converter module;
And S3, the receiver module calculates and processes the received digital signals, so that state information of the rotor in the motion process of the propulsion motor is obtained.
7. The method for monitoring the state of a rotor of an ultra-high-speed propulsion motor according to claim 6, wherein the rotor posture signals in the step S1 include a gap signal between four apexes of a rotor bottom and a rail bottom and a gap signal between a front-rear direction of left and right side walls of the rotor and a rail side wall, and the rotor vibration acceleration signals include a rotor lateral vibration acceleration signal, a longitudinal vibration acceleration signal and a vertical vibration acceleration signal.
8. The method for monitoring the state of a rotor of an ultra-high-speed propulsion motor according to claim 7, wherein the specific implementation manner of the step S3 includes:
S31, filtering interference noise in the received digital signals through a digital filter in the receiver module;
S32, finding the self size of the rotor, and calculating the attitude angle, the rolling angle and the yaw angle of the rotor according to the self size of the rotor, the gap signals between four vertexes of the bottom of the rotor and the bottom of the track and the gap signals between the front and back directions of the left side wall and the right side wall of the rotor and the side wall of the track;
and S33, calculating the longitudinal acceleration, the transverse acceleration and the vertical acceleration of the rotor in the ground coordinate system according to the attitude angle, the rolling angle and the yaw angle of the rotor, and the transverse vibration acceleration signal, the longitudinal vibration acceleration signal and the vertical vibration acceleration signal of the rotor, which are obtained in the step S32, so as to obtain the state information of the rotor in the motion process of the propulsion motor.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840980A (en) * | 2012-09-06 | 2012-12-26 | 南京理工大学 | Comprehensive accuracy and performance testing device of rolling linear guide pair |
| CN103543613A (en) * | 2013-09-25 | 2014-01-29 | 清华大学 | Moving-iron cableless six-freedom-of-degree magnetic levitation moving platform |
| CN210742449U (en) * | 2019-05-20 | 2020-06-12 | 中国人民解放军国防科技大学 | An ultra-high-speed propulsion motor mover state monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203024970U (en) * | 2012-09-06 | 2013-06-26 | 南京理工大学 | Rolling linear guide rail pair comprehensive accuracy and performance test device |
| CN103926031B (en) * | 2014-04-24 | 2016-01-20 | 中南大学 | The thrust measurement method of linear electric motors and detection system |
| CN108233816A (en) * | 2017-12-20 | 2018-06-29 | 湖南省军民融合装备技术创新中心 | A kind of method and apparatus for the processing of rotor position signal synthesis |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840980A (en) * | 2012-09-06 | 2012-12-26 | 南京理工大学 | Comprehensive accuracy and performance testing device of rolling linear guide pair |
| CN103543613A (en) * | 2013-09-25 | 2014-01-29 | 清华大学 | Moving-iron cableless six-freedom-of-degree magnetic levitation moving platform |
| CN210742449U (en) * | 2019-05-20 | 2020-06-12 | 中国人民解放军国防科技大学 | An ultra-high-speed propulsion motor mover state monitoring system |
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