CN109827488A - A kind of the size detection equipment and its detection method of alternating current generator electro spindle - Google Patents
A kind of the size detection equipment and its detection method of alternating current generator electro spindle Download PDFInfo
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- CN109827488A CN109827488A CN201811149793.8A CN201811149793A CN109827488A CN 109827488 A CN109827488 A CN 109827488A CN 201811149793 A CN201811149793 A CN 201811149793A CN 109827488 A CN109827488 A CN 109827488A
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Abstract
The present invention relates to alternating current generator technical fields, and disclose the size detection equipment and its detection method of a kind of alternating current generator electro spindle, including device box, detector, control handle, display screen, connecting line, detection stream pen, connecting shaft and device upper cover；In the inside of device box, the detector and display screen are respectively positioned on the top of control handle for the detector, control handle and display location.The size detection equipment and its detection method of the alternating current generator electro spindle, by obtaining current of electric, motor negative sequence current value is obtained based on current of electric, motor precision size is determined to the size relation of motor negative sequence current value and predetermined threshold by two detection stream pens, size relation of the graduated scale being equipped with again by detector front to motor negative sequence current value and the predetermined threshold, when the number that motor negative sequence current value is greater than the predetermined threshold is more than upper limit threshold, that is, it can reach the threshold current detecting size of determining motor and the effect of working condition.
Description
Technical field
The present invention relates to alternating current generator technical field, the size detection equipment of specially a kind of alternating current generator electro spindle and
Its detection method.
Background technique
Motor refers to a kind of calutron that electric energy conversion or transmitting are realized according to the law of electromagnetic induction, and motor is in circuit
In be to be indicated with letter M, its main function is to generate driving torque, as electrical appliance or the power source of various machinery, is generated electricity
Machine indicates that its main function is to be converted into electric energy using mechanical energy with letter G in circuit.
Existing electric machine main shaft detection device single can only carry out electric machine main shaft single in detection device majority
Size detection not can determine that the working condition of electric machine main shaft not only, but also cannot be to the exact volume of electric machine main shaft internal components
Numerical value is detected, in order to which the instantaneous value that the accurate dimension virtual value of electric machine main shaft needs to acquire certain time is calculated, with
And complicated mathematical operation is carried out, these extend the time of size detection, in addition, there are zero offsets to ask for current sensor
Topic, the lower problem of judgment threshold accuracy.
Summary of the invention
The present invention provides a kind of size detection equipment of alternating current generator electro spindle and its detection methods, have threshold value electricity
Flow detecting size and the advantages of working condition, solve be calculated electric machine main shaft accurate dimension it is poor, and answered
Miscellaneous mathematical operation, the time longer problem of size detection.
The invention provides the following technical scheme: the size detection equipment and its detection method of a kind of alternating current generator electro spindle,
Including device box, detector, control handle, display screen, connecting line, detection stream pen, connecting shaft and device upper cover；The detection
In the inside of device box, the detector and display screen are respectively positioned on the top of control handle for device, control handle and display location,
The detector is located at the left side of control handle and display screen, and the bottom of the detector, control handle and display screen is run through
And the inside of device box is extended to, the detector is located at the right side that the right side on the outside of device box passes through connecting line and detection stream pen
End is fixedly connected, and the bottom of the detection stream pen is in contact with the front of device box, the number of the detection stream pen and connecting line
Amount is two, and two connecting lines are distributed with the central symmetry of detector, described device box on the outside of top pass through company
Spindle is flexibly connected with the bottom of outer side of lid on device, the maximal angle value 108 between described device box and device upper cover
Ten degree,
The size detection equipment and its detection method of the alternating current generator electro spindle includes:
Obtain current of electric；
Motor negative sequence current value is obtained based on the current of electric；
Electric machine main shaft accurate dimension is determined based on the size relation of the motor negative sequence current value and predetermined threshold.
Preferably, the size relation based on the motor negative sequence current value and predetermined threshold determines electric machine main shaft ruler
It is very little to further comprise, the size relation of the motor negative sequence current value and the predetermined threshold, when the motor negative phase-sequence electricity
When the number that flow valuve is greater than the predetermined threshold is more than upper limit threshold, the electric machine main shaft size is determined.
Preferably, described to further comprise based on current of electric acquisition motor negative sequence current value: by the motor electricity
The instantaneous current value of stream transforms to two-phase stationary coordinate system, the current value in the rest frame is transformed to negative phase-sequence coordinate
It is, filters out other signals except negative sequence current signal in negative phase-sequence coordinate system, using negative-sequence current D. C. value or passes through calculating
Negative-sequence current amplitude is obtained as the motor negative sequence current value.
Preferably, the electric machine main shaft size detecting device includes current of electric acquisition unit, negative-sequence current detection unit
With major axis size determination unit, the current of electric acquisition unit is configured to obtain current of electric, and the negative-sequence current detection is single
Member is configured to the current of electric and obtains motor negative sequence current value, and the major axis size determination unit is configured to institute
The size relation for stating motor negative sequence current value and predetermined threshold determines motor specific size.
Preferably, the major axis size determination unit further comprises comparing unit and counting unit, the comparing unit
It is configured to the size relation of motor negative sequence current value and the predetermined threshold described in comparison, and comparison result is sent to described
Counting unit, the counting unit are configured to increase count value when the motor negative sequence current value is greater than the predetermined threshold,
And when the count value is more than upper limit threshold, set major axis size flag bit.
Preferably, the counting unit is further configured to: when the motor negative sequence current value is not more than the predetermined threshold
Reduce count value when value, and resets the major axis size flag bit when the count value is zero.
Preferably, the negative-sequence current detection unit further comprises static coordinate converter unit, negative phase-sequence coordinate transform list
Member and filter unit, the static coordinate converter unit are configured to the instantaneous current value of the current of electric transforming to two-phase
Rest frame, the negative phase-sequence coordinate transformation unit are configured to transforming to the current value in the rest frame into negative phase-sequence seat
Mark system, the filter unit are configured to filter out other signals except the negative sequence current signal in negative phase-sequence coordinate system to be born
Sequence current DC value is as the motor negative sequence current value.
Preferably, the negative-sequence current detection unit further includes computing unit, and the computing unit is configured to calculate negative phase-sequence
Current amplitude is using as the motor negative sequence current value.
Preferably, the top of outer side of lid is fixedly installed with holding rod on the bottom on the outside of described device box and device, and two
The outer of the holding rod is equipped with anti-skid chequer, and the front of described device box is fixedly installed with resilient sleeve, and the resilient sleeve is located at inspection
The underface of device is surveyed, the quantity of the resilient sleeve is two, and the inner wall of two resilient sleeves is outer with two detection stream pens
Edge is in contact.
Preferably, it is equipped with scale inside the detector and moves needle, the scale moves the bottom end of needle and the bottom of detector inner wall
Portion is flexibly connected, and the front inside the detector is equipped with graduated scale.
The present invention have it is following the utility model has the advantages that
1, the size detection equipment and its detection method of the alternating current generator electro spindle, by obtaining current of electric, based on electricity
Electromechanics stream obtains motor negative sequence current value, is closed by size of two detection stream pens to motor negative sequence current value and predetermined threshold
It is to determine motor precision size, then the graduated scale being equipped with by detector front is to motor negative sequence current value and the predetermined threshold
The size relation of value can reach really when the number that motor negative sequence current value is greater than the predetermined threshold is more than upper limit threshold
Determine the threshold current detecting size of motor and the effect of working condition.
2, the size detection equipment and its detection method of the alternating current generator electro spindle, by device box and device upper cover it
Between connecting shaft so that the angle of device box and device upper cover is changed, thus the receipts carried out to device box and device upper cover
It receives, while effective portable by holding rod progress, while in order to avoid detection stream pen and connecting line touch inside device box
It hits, flexible detent is carried out to detection stream pen by resilient sleeve, alternating current generator is avoided and detects cumbersome drawback, can be detected dress
Set the effect of flexible positioning anticollision easy to carry.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
In figure: 1, device box；2, detector；3, control handle；4, display screen；5, connecting line；6, detection stream pen；7, even
Spindle；8, device upper cover；9, resilient sleeve；10, scale moves needle；11, holding rod.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the size detection equipment and its detection method of a kind of alternating current generator electro spindle, including device box 1,
Detector 2, control handle 3, display screen 4, connecting line 5, detection stream pen 6, connecting shaft 7 and device upper cover 8；Detector 2, control
Knob 3 and display screen 4 are located at the inside of device box 1, and detector 2 and display screen 4 are respectively positioned on the top of control handle 3, detector
2 are located at the left side of control handle 3 and display screen 4, and the bottom of detector 2, control handle 3 and display screen 4 is run through and extended to
The inside of device box 1, the right side that detector 2 is located at 1 outside of device box are fixed by connecting line 5 and the right end of detection stream pen 6
Connection, the bottom of detection stream pen 6 are in contact with the front of device box 1, and the quantity of detection stream pen 6 and connecting line 5 is two,
Two connecting lines 5 are distributed with the central symmetry of detector 2, the top in 1 outside of device box pass through connecting shaft 7 and device upper cover 8
The bottom in outside is flexibly connected, 180 degree of the maximal angle value between device box 1 and device upper cover 8；
The size detection equipment and its detection method of the alternating current generator electro spindle includes:
Obtain current of electric；
Motor negative sequence current value is obtained based on current of electric；
Determine that electric machine main shaft accurate dimension is negative based on motor based on the size relation of motor negative sequence current value and predetermined threshold
The size relation of sequence current value and predetermined threshold determine electric machine main shaft size further comprise compare motor negative sequence current value with
The size relation of predetermined threshold determines motor when the number that motor negative sequence current value is greater than predetermined threshold is more than upper limit threshold
Major axis size, obtaining motor negative sequence current value based on current of electric further comprises: the instantaneous current value of current of electric is converted
Negative phase-sequence coordinate system is transformed to two-phase stationary coordinate system, by the current value in rest frame, filters out bearing in negative phase-sequence coordinate system
Using negative-sequence current D. C. value or negative-sequence current amplitude is obtained by calculation as electricity in other signals except sequence current signal
Machine negative sequence current value, electric machine main shaft size detecting device include current of electric acquisition unit, negative-sequence current detection unit and master
Shaft size determination unit, current of electric acquisition unit are configured to obtain current of electric, and negative-sequence current detection unit is configured to
Current of electric obtains motor negative sequence current value, and major axis size determination unit is configured to motor negative sequence current value and predetermined threshold
The size relation of value determines motor specific size, and major axis size determination unit further comprises comparing unit and counting unit, than
It is configured to compare the size relation of motor negative sequence current value and predetermined threshold compared with unit, and comparison result is sent to counting list
Member, counting unit are configured to increase count value when motor negative sequence current value is greater than predetermined threshold, and when count value is more than upper
When limiting threshold value, set major axis size flag bit, counting unit is further configured to: when motor negative sequence current value is no more than predetermined
Reduce count value when threshold value, and reset major axis size flag bit when count value is zero, by obtaining current of electric, is based on
Current of electric obtains motor negative sequence current value, passes through the size of 6 pairs of motor negative sequence current values and predetermined threshold of two detection stream pens
Relationship determines motor precision size, then the graduated scale being equipped with by 2 front of detector to motor negative sequence current value and predetermined threshold
Size relation, when motor negative sequence current value be greater than predetermined threshold number be more than upper limit threshold when, that is, can reach determining motor
Threshold current detecting size and working condition effect, negative-sequence current detection unit further comprises that static coordinate transformation is single
Member, negative phase-sequence coordinate transformation unit and filter unit, static coordinate converter unit are configured to the instantaneous current value of current of electric
Two-phase stationary coordinate system is transformed to, negative phase-sequence coordinate transformation unit is configured to the current value in rest frame transforming to negative phase-sequence
Coordinate system, filter unit are configured to filter out other signals except the negative sequence current signal in negative phase-sequence coordinate system to obtain negative phase-sequence
For current DC value as motor negative sequence current value, negative-sequence current detection unit further includes computing unit, and computing unit is configured to count
Negative-sequence current amplitude is calculated so that as motor negative sequence current value, the top in 8 outside of bottom and device upper cover in 1 outside of device box is equal
It is fixedly installed with holding rod 11, the outer of two holding rods 11 is equipped with anti-skid chequer, and the front of device box 1 is fixedly installed with resilient sleeve
9, resilient sleeve 9 is located at the underface of detector 2, and the quantity of resilient sleeve 9 is two, the inner wall of two resilient sleeves 9 with two
The outer of detection stream pen 6 is in contact, and scale is equipped with inside detector 2 and moves needle 10, scale moves in bottom end and the detector 2 of needle 10
The bottom of wall is flexibly connected, and the front inside detector 2 is equipped with graduated scale, passes through the company between device box 1 and device upper cover 8
Spindle 7, so that the angle of device box 1 and device upper cover 8 is changed, thus the receipts carried out to device box 1 and device upper cover 8
Receive, at the same carried out by holding rod 11 it is effective portable, while in order to avoid detection stream pen 6 and connecting line 5 are inside device box 1
It collides, flexible detent is carried out to detection stream pen 6 by resilient sleeve 9, alternating current generator is avoided and detects cumbersome drawback, i.e.,
The effect of detectable device flexible positioning anticollision easy to carry.
Working principle, steps are as follows for the size detection equipment and its detection method of alternating current generator electro spindle:
Step 1: current of electric is obtained；
Step 2: motor negative sequence current value is obtained based on current of electric；
Step 3: electric machine main shaft is determined based on the size relation of motor negative sequence current value and predetermined threshold；
When motor operates normally, negative-sequence current ingredient is substantially not present in motor AC, when size occurs for motor for example
Occur phase shortage or other when containing asymmetrical three-phase (such as phase fault) equidimension of negative-sequence current ingredient, negative-sequence current at
Dividing will dramatically increase, and by acquiring and solving the negative-sequence current ingredient contained in motor instantaneous ac current, judge negative-sequence current
Value whether be more than predetermined threshold, to detect the working condition such as motor lacks asymmetry, may not need as that in existing method
Sample is the detection for the instantaneous current value for obtaining current effective value and carrying out certain time, without complicated mathematical operation, therefore
Can real-time detection such as phase shortage or the problems such as similar asymmetrical three-phase can be with to realize safer more efficient protection
Above-mentioned predetermined threshold is set according to actual needs, and is used as and will be compared with predetermined threshold using negative-sequence current D. C. value
Motor negative sequence current value, or negative-sequence current amplitude is obtained by calculation as the motor that will be compared with predetermined threshold
Negative sequence current value, direct collected current of electric are instantaneous current value, are carried out simple coordinate transform or plus simple
It calculates, can be easy to obtain the motor negative sequence current value for carrying out motor size judgement by being compared with predetermined threshold, lead to
Acquisition current of electric is crossed, motor negative sequence current value is obtained based on current of electric, passes through two detection stream pens, 6 pairs of motor negative phase-sequence electricity
Flow valuve and the size relation of predetermined threshold determine motor precision size, then the graduated scale being equipped with by 2 front of detector to electricity
The size relation of machine negative sequence current value and predetermined threshold, when the number that motor negative sequence current value is greater than predetermined threshold is more than the upper limit
When threshold value.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. the size detection equipment and its detection method of a kind of alternating current generator electro spindle, it is characterised in that: including device box (1),
Detector (2), control handle (3), display screen (4), connecting line (5), detection stream pen (6), connecting shaft (7) and device upper cover (8)；
The detector (2), control handle (3) and display screen (4) are located at the inside of device box (1), the detector (2) and display screen
(4) it is respectively positioned on the top of control handle (3), the detector (2) is located at the left side of control handle (3) and display screen (4), described
The inside of device box (1), the detection are run through and extended in the bottom of detector (2), control handle (3) and display screen (4)
Device (2) is located at the right side on the outside of device box (1) and is fixedly connected by connecting line (5) with the right end of detection stream pen (6), the detection
The bottom of stream pen (6) is in contact with the front of device box (1), and the quantity of the detection stream pen (6) and connecting line (5) is two
A, two connecting lines (5) are distributed with the central symmetry of detector (2), described device box (1) on the outside of top pass through company
Spindle (7) is flexibly connected with the bottom on the outside of device upper cover (8), the maximum angular between described device box (1) and device upper cover (8)
180 degree of angle value；
The size detection equipment and its detection method of the alternating current generator electro spindle includes:
Obtain current of electric；
Motor negative sequence current value is obtained based on the current of electric；
Electric machine main shaft accurate dimension is determined based on the size relation of the motor negative sequence current value and predetermined threshold.
2. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the size relation based on the motor negative sequence current value and predetermined threshold determines that electric machine main shaft size is further wrapped
It includes, the size relation of the motor negative sequence current value and the predetermined threshold, when the motor negative sequence current value is greater than institute
When stating the number of predetermined threshold more than upper limit threshold, the electric machine main shaft size is determined.
3. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
It is: described to further comprise based on current of electric acquisition motor negative sequence current value: by the instantaneous electricity of the current of electric
Flow valuve transforms to two-phase stationary coordinate system, the current value in the rest frame is transformed to negative phase-sequence coordinate system, filters out negative phase-sequence
Using negative-sequence current D. C. value or negative-sequence current is obtained by calculation in other signals except negative sequence current signal in coordinate system
Amplitude is as the motor negative sequence current value.
4. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the electric machine main shaft size detecting device includes current of electric acquisition unit, negative-sequence current detection unit and major axis size
Determination unit, the current of electric acquisition unit are configured to obtain current of electric, and the negative-sequence current detection unit is configured to base
Motor negative sequence current value is obtained in the current of electric, the major axis size determination unit is configured to the motor negative phase-sequence electricity
Flow valuve and the size relation of predetermined threshold determine motor specific size.
5. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the major axis size determination unit further comprises comparing unit and counting unit, and the comparing unit is configured to compare
The size relation of the motor negative sequence current value and the predetermined threshold, and comparison result is sent to the counting unit, institute
It states counting unit to be configured to increase count value when the motor negative sequence current value is greater than the predetermined threshold, and works as the meter
When numerical value is more than upper limit threshold, set major axis size flag bit.
6. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the counting unit is further configured to: reducing meter when the motor negative sequence current value is not more than the predetermined threshold
Numerical value, and the major axis size flag bit is resetted when the count value is zero.
7. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the negative-sequence current detection unit further comprises that static coordinate converter unit, negative phase-sequence coordinate transformation unit and filtering are single
Member, the static coordinate converter unit are configured to the instantaneous current value of the current of electric transforming to two-phase stationary coordinate system,
The negative phase-sequence coordinate transformation unit is configured to transforming to the current value in the rest frame into negative phase-sequence coordinate system, the filtering
Unit is configured to filter out other signals except the negative sequence current signal in negative phase-sequence coordinate system to obtain negative-sequence current D. C. value work
For the motor negative sequence current value.
8. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the negative-sequence current detection unit further includes computing unit, the computing unit be configured to calculate negative-sequence current amplitude with
As the motor negative sequence current value.
9. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
Be: the top on the outside of bottom and device upper cover (8) on the outside of described device box (1) is fixedly installed with holding rod (11), and two
The outer of the holding rod (11) is equipped with anti-skid chequer, and the front of described device box (1) is fixedly installed with resilient sleeve (9), the bullet
Property set (9) be located at the underface of detector (2), the quantity of the resilient sleeve (9) is two, two resilient sleeves (9) it is interior
Wall is in contact with the outer of two detection stream pens (6).
10. the size detection equipment and its detection method of a kind of alternating current generator electro spindle according to claim 1, feature
It is: is equipped with scale inside the detector (2) and moves needle (10), the scale moves bottom end and detector (2) inner wall of needle (10)
Bottom be flexibly connected, the internal front of the detector (2) is equipped with graduated scale.
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|---|---|---|---|
| CN201811149793.8A CN109827488A (en) | 2018-09-29 | 2018-09-29 | A kind of the size detection equipment and its detection method of alternating current generator electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811149793.8A CN109827488A (en) | 2018-09-29 | 2018-09-29 | A kind of the size detection equipment and its detection method of alternating current generator electro spindle |
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| CN201811149793.8A Pending CN109827488A (en) | 2018-09-29 | 2018-09-29 | A kind of the size detection equipment and its detection method of alternating current generator electro spindle |
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2018
- 2018-09-29 CN CN201811149793.8A patent/CN109827488A/en active Pending
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| JP2005094912A (en) * | 2003-09-17 | 2005-04-07 | Suzuki Motor Corp | Fault detection device of current sensor |
| CN106291352A (en) * | 2015-05-26 | 2017-01-04 | 江森自控空调冷冻设备(无锡)有限公司 | Electrical fault detection method and device and electrical fault protect system |
| CN206740838U (en) * | 2017-05-27 | 2017-12-12 | 余绍敏 | A kind of Electronics and Information Engineering universal meter |
| CN207457324U (en) * | 2017-11-14 | 2018-06-05 | 庞新民 | A kind of electromechanical speciality universal meter |
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Application publication date: 20190531 |