CN109724749A - The calculation method of Hysteresis phase lag is sought in Dynamic Balance of Rotor experiment - Google Patents
The calculation method of Hysteresis phase lag is sought in Dynamic Balance of Rotor experiment Download PDFInfo
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- CN109724749A CN109724749A CN201811598034.XA CN201811598034A CN109724749A CN 109724749 A CN109724749 A CN 109724749A CN 201811598034 A CN201811598034 A CN 201811598034A CN 109724749 A CN109724749 A CN 109724749A
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Abstract
The present invention provides the calculation methods that Hysteresis phase lag is sought in a kind of experiment of Dynamic Balance of Rotor, belong to Dynamic Balance of Rotor experimental technique field, calculating step includes: to mark vibrating sensor, key phase on the rotary shaft according to actual installation position, marks the direction of rotation of rotor；The vibration initial phase θ tested out by vibrating sensor, key phase is marked in figure, and it is initial position that the initial position of the starting phase angle tested out, which is from vibrating sensor,；Show that balance position marks in figure by the test mass method that Dynamic Balance of Rotor is tested；Utilize the anti-Hysteresis phase lag for releasing rotor of calculation formula.The calculated Hysteresis phase lag of the present invention is easy, accurate, for in dynamic balance test of rotor, the counterweight phase of rotor can once be found, it is ensured that the safety of rotor operation, the success rate for reducing worker's labor efficiency, improving working efficiency and test substantially reduce test period.
Description
Technical field
The invention belongs to Rotor dynamic-balancing experiment technical fields, are to be related to a kind of Dynamic Balance of Rotor more specifically
The calculation method of Hysteresis phase lag is sought in experiment.
Background technique
Rotor can do spot dynamic balance according to test mass method in doing spot dynamic balance, if but not knowing the machinery of rotor
Angle of lag, there are the following problems for meeting: (1) phase angle for adding counterweight can not be determined according to initial phase and Hysteresis phase lag, if examination
Weight position is selected in the opposite for needing balance position, and rotor can be such that vibration increases after actuation, increases the danger of spot dynamic balance test
Property, it is also possible to because vibrating larger chaser, test mass position can only be looked for again；(2) labor intensity of workers is big, and accurately matches looking for
Generally pass through measurement rotor arc length when weight position, if test mass position causes greatly very much measurement difficult away from balance position angle；(2) at
Power and efficiency are lower.Whether the Hysteresis phase lag therefore found out accurately directly affects the success of dynamic Dynamic Balance of Rotor test
Rate and precision.
Summary of the invention
The purpose of the present invention is to provide seeking the calculation method of Hysteresis phase lag in a kind of experiment of Dynamic Balance of Rotor,
To solve the technical issues of Hysteresis phase lag inaccuracy existing in the prior art influences spot dynamic balance.
To achieve the above object, the technical solution adopted by the present invention is that: provide and asked in a kind of experiment of Dynamic Balance of Rotor
Take the calculation method of Hysteresis phase lag, comprising the following steps:
Vibrating sensor and key phase are marked on armature spindle according to actual installation position, while marking rotor
Direction of rotation is to calculate basic point with key phase, and phase angle is denoted as 0 °；
The angle of transformation of the vibrating sensor and the key phase, is denoted as α；
The starting phase angle that vibration high point is tested out by the vibrating sensor and the key phase, is denoted as θ, and
It is marked in figure, wherein the initial position of the starting phase angle tested out is using vibrating sensor as initial position；
Balance position is obtained using the test mass method that Dynamic Balance of Rotor is tested, and is measured and is aggravated phase angle, is denoted as β, and
It is marked in figure, wherein aggravate phase angle using the key phase as initial position；
Balance position radially reverse extending in figure obtains non-equilibrium site, the vibration high point and the uneven position
Angle of transformation between setting, as Hysteresis phase lag, are denoted as ψ；
Using calculation formula, the anti-Hysteresis phase lag for releasing rotor；
When rotor is rotation counterclockwise, the calculation formula of Hysteresis phase lag are as follows:
+ 180 ° of ψ=β-θ+α
Rotor is the calculation formula of Hysteresis phase lag when rotating clockwise are as follows:
+ 180 ° of ψ=β-θ-α
Mechanical hysteresis angular unit is degree, and each angle is that absolute value substitutes into formula.
Further, the vibrating sensor is placed on the radial level position of the rotor.
Further, the angle of transformation α of the vibrating sensor and the key phase is acute angle.
It further, is to calculate basic point with the key phase, it is practical initial when rotor is to rotate counterclockwise
Phase angle is θ-α；
When rotor is to be rotated clockwise, practical starting phase angle is θ+α.
Further, when rotor is to be rotated clockwise, starting phase angle θ is positive value, and and rotor direction of rotation
It is identical；When rotor is to rotate counterclockwise, starting phase angle θ is negative value, and opposite with rotor direction of rotation.
The beneficial effect for the calculation method for seeking Hysteresis phase lag in Dynamic Balance of Rotor experiment provided by the invention exists
In: the calculated Hysteresis phase lag of the present invention is easy, accurate, can be used in dynamic balance test of rotor, in an experiment, utilize machine
The angle of transformation α of tool angle of lag ψ, starting phase angle θ and vibrating sensor and the key phase, can calculate counterweight
The exacerbation phase angle β of position, can once find the counterweight phase of rotor, fast and accurately determine balance position, convenient right
Rotor carries out counterweight, it can be ensured that the safety of rotor operation, reduce worker's labor efficiency, improve working efficiency and test at
Power substantially reduces test period.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is that rotor provided in an embodiment of the present invention rotates counterclockwise Hysteresis phase lag calculating schematic diagram；
Fig. 2 is that rotor clockwise direction rotating machinery angle of lag provided in an embodiment of the present invention calculates schematic diagram.
Wherein, each appended drawing reference in figure:
1- key phase；2- vibrating sensor；3- non-equilibrium site；4- vibrates high point；5- balance position.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Also referring to Fig. 1 and Fig. 2, now to Dynamic Balance of Rotor provided by the invention experiment in seek Hysteresis phase lag
Calculation method be illustrated.The calculation method of Hysteresis phase lag is sought in the Dynamic Balance of Rotor experiment, including following
Step:
Vibrating sensor 2 and key phase 1 are marked on armature spindle according to actual installation position, while marking rotor
Direction of rotation, with key phase 1 be calculate basic point, phase angle is denoted as 0 °；
The angle of transformation of the vibrating sensor 2 and the key phase 1, is denoted as α；
The starting phase angle that vibration high point 4 is tested out by the vibrating sensor 2 and the key phase 1, is denoted as
θ, and marked in figure, wherein the initial position of the starting phase angle tested out is with vibrating sensor 2 for initial position；
Balance position 5 is obtained using the test mass method that Dynamic Balance of Rotor is tested, and is measured and is aggravated phase angle, is denoted as β, and
It is marked in figure, wherein aggravating phase angle with the key phase 1 is initial position；
The radially reverse extending of balance position 5, obtains non-equilibrium site 3, the vibration high point 4 and the imbalance in figure
Angle of transformation between position 3, as Hysteresis phase lag, are denoted as ψ；
Using calculation formula, the anti-Hysteresis phase lag for releasing rotor；
When rotor is rotation counterclockwise, referring to Fig. 1, the calculation formula of Hysteresis phase lag are as follows:
+ 180 ° of ψ=β-θ+α
Rotor is when rotating clockwise, referring to fig. 2, the calculation formula of Hysteresis phase lag are as follows:
+ 180 ° of ψ=β-θ-α
Mechanical hysteresis angular unit is degree, and each angle is that absolute value substitutes into formula.
The calculation method that Hysteresis phase lag is sought in Dynamic Balance of Rotor experiment provided by the invention, with prior art phase
Than the calculated Hysteresis phase lag of the present invention is easy, accurate, can be used in dynamic balance test of rotor, in an experiment, utilize machine
The angle of transformation α of tool angle of lag ψ, starting phase angle θ and vibrating sensor 2 and the key phase 1, can calculate and match
The exacerbation phase angle β of weight position 5, can once find the counterweight phase of rotor, fast and accurately determine balance position 5, convenient
Counterweight is carried out to rotor, it can be ensured that the safety of rotor operation reduces worker's labor efficiency, improves working efficiency and test
Success rate, substantially reduce test period.
Wherein, initial phase θ is vibrated, is to be measured by impulse method, unbalanced signal and pulse signal in time domain waveform
In be compared after obtain.
Also referring to Fig. 1 to Fig. 2, as seeking Hysteresis phase lag in Dynamic Balance of Rotor provided by the invention experiment
Calculation method a kind of specific embodiment, vibrating sensor 2 is placed on the radial level position of rotor, vibration high point 4 with
2 position of vibrating sensor is related.
Fig. 1 to Fig. 2 is please referred to, as the meter for seeking Hysteresis phase lag in Dynamic Balance of Rotor provided by the invention experiment
The angle of transformation α of a kind of specific embodiment of calculation method, vibrating sensor 2 and the key phase 1 is acute angle, can also
To select the opposite direction of radial level position shown in FIG. 1.
Refering to fig. 1 and Fig. 2, as the calculating for seeking Hysteresis phase lag in Dynamic Balance of Rotor provided by the invention experiment
A kind of specific embodiment of method is to calculate basic point with key phase 1, when rotor is to rotate counterclockwise, referring to
Fig. 1, arrow are oriented to rotor direction of rotation, and practical starting phase angle is θ-α；
When rotor is to be rotated clockwise, referring to fig. 2, arrow is oriented to rotor direction of rotation, practical initial phase
Angle is θ+α.
Fig. 1 to Fig. 2 is please referred to, as the meter for seeking Hysteresis phase lag in Dynamic Balance of Rotor provided by the invention experiment
A kind of specific embodiment of calculation method, when rotor is to be rotated clockwise, starting phase angle θ is positive value, and and rotor
Direction of rotation is identical；When rotor is to rotate counterclockwise, starting phase angle θ is negative value, and opposite with rotor direction of rotation.
Due to uneven direction, vibrating sensor and key phase in the phase and rotor of vibration installation site with
And Hysteresis phase lag is related.For a specific unit, the installation site of vibrating sensor and key phase is certain
, when one timing of revolving speed, Hysteresis phase lag is certain, and therefore, the variation of vibration phase can reflect in rotor unbalance direction
On variation.Therefore angle of lag reflects the phase difference between vibration high point and out-of-balance force.It is mutually sensed according to vibration high point with key
Phase relation between device, using the characteristic of rotor Hysteresis phase lag, the phase combination vibrating sensor measured by vibration measurement instrument
With the relative mounting location between key phase, that is, it can determine on rotor that unbalanced direction calculates machine using the present invention
Tool angle of lag aggravates direction for rotor dynamic balancing and provides foundation.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. seeking the calculation method of Hysteresis phase lag in Dynamic Balance of Rotor experiment, which comprises the following steps:
Vibrating sensor and key phase are marked on armature spindle according to actual installation position, while marking the rotation of rotor
Direction is to calculate basic point with key phase, and phase angle is denoted as 0 °；
The angle of transformation of the vibrating sensor and the key phase, is denoted as α；
The starting phase angle that vibration high point is tested out by the vibrating sensor and the key phase, is denoted as θ, and scheming
In mark, wherein the initial position of the starting phase angle tested out is using vibrating sensor as initial position；
Balance position is obtained using the test mass method that Dynamic Balance of Rotor is tested, and is measured and is aggravated phase angle, is denoted as β, and in figure
It marks, wherein aggravate phase angle using the key phase as initial position；
Balance position radially reverse extending in figure, obtains non-equilibrium site, the vibration high point and the non-equilibrium site it
Between angle of transformation, as Hysteresis phase lag is denoted as ψ；
Using calculation formula, the anti-Hysteresis phase lag for releasing rotor；
When rotor is rotation counterclockwise, the calculation formula of Hysteresis phase lag are as follows:
+ 180 ° of ψ=β-θ+α
Rotor is the calculation formula of Hysteresis phase lag when rotating clockwise are as follows:
+ 180 ° of ψ=β-θ-α
Mechanical hysteresis angular unit is degree, and each angle is that absolute value substitutes into formula.
2. seeking the calculation method of Hysteresis phase lag in Dynamic Balance of Rotor experiment as described in claim 1, feature exists
In: the vibrating sensor is placed on the radial level position of the rotor.
3. seeking the calculation method of Hysteresis phase lag in Dynamic Balance of Rotor experiment as claimed in claim 2, feature exists
In: the angle of transformation α of the vibrating sensor and the key phase is acute angle.
4. seeking the calculation method of Hysteresis phase lag in Dynamic Balance of Rotor experiment as described in claim 1, feature exists
In: it is to calculate basic point with the key phase, when rotor is to rotate counterclockwise, practical starting phase angle is θ-α；
When rotor is to be rotated clockwise, practical starting phase angle is θ+α.
5. seeking the calculation method of Hysteresis phase lag in Dynamic Balance of Rotor experiment as described in claim 1, feature exists
In: when rotor is to be rotated clockwise, starting phase angle θ is positive value, and identical as rotor direction of rotation；When rotor is inverse
When clockwise rotates, starting phase angle θ is negative value, and opposite with rotor direction of rotation.
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| CN110243541A (en) * | 2019-07-18 | 2019-09-17 | 新兴铸管股份有限公司 | Blower on-line dynamic balancing calculation method |
| CN112082695A (en) * | 2020-09-04 | 2020-12-15 | 江苏铍迪埃坶节能科技有限公司 | Motor field dynamic balance correction and vibration detection method |
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Application publication date: 20190507 |