CN104034916B - The permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait - Google Patents
The permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait Download PDFInfo
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- CN104034916B CN104034916B CN201410259099.7A CN201410259099A CN104034916B CN 104034916 B CN104034916 B CN 104034916B CN 201410259099 A CN201410259099 A CN 201410259099A CN 104034916 B CN104034916 B CN 104034916B
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Abstract
The invention discloses the permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait, including the center of housing, described housing to be provided with a horizontal rotating shaft, it is characterised in that：External stator iron core is fixed in housing, output winding is provided with the slot for winding unshakable in one's determination of external stator, internal stator iron core is embedded in permanent magnetic steel, cup-shaped rotor is fixed and is arranged between the external stator air gap internal stator iron core unshakable in one's determination, cup-shaped rotor is fixedly connected by movable sleeve with rotating shaft, rotating shaft is arranged on housing by two bearings, and the magnetic axis that the axis of the winding unshakable in one's determination of external stator is embedded in permanent magnetic steel with internal stator iron core is mutually orthogonal.It is of the invention that there is higher sensitivity compared with the whole complete default minor structure using permanent magnetic steel, and export electromotive force and corresponded with rotary acceleration, precision is high, moreover, simple in construction；Because sensor is coaxially connected with transmission system, rotary acceleration signal acquisition is direct.
Description
Technical field
The present invention relates to a kind of sensor, and in particular to the permanent magnetism rotating angular acceleration that a kind of d-axis and quadrature-axis reluctance do not wait
Sensor.
Background technology
Rotation（Angle）Acceleration analysis is one of most common measurement in mechanical value measuring, known magneto rotation（Angle）
Its inner stator of acceleration integrally uses permanent magnetic steel, and because permanent magnetic steel magnetic resistance is very big, quadrature axis direct axis reluctance is equal, and by rotating
Angular acceleration caused induced potential size in cup-shaped rotor is limited, so, electric current caused by the potential and caused magnetic
Logical meeting very little, so as to which caused induced potential meeting very little, the sensitivity of sensor are very low in winding is exported.
The content of the invention
In view of the deficiencies of the prior art, the present invention provides the permanent magnetism rotating angular acceleration that a kind of d-axis and quadrature-axis reluctance do not wait
Sensor, there is higher sensitivity, i.e., when output umber of turn is constant, exported in the case of same rotating angular acceleration
Bigger induced potential can be exported in winding.
The permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait, including housing, base, described shell
The center of body is provided with a horizontal rotating shaft, and housing is fixed on base, and external stator iron core is fixed in housing, the iron of external stator
Output winding is provided with heart slot for winding, internal stator iron core is embedded in permanent magnetic steel, and cup-shaped rotor is fixed and is arranged on external stator
Between unshakable in one's determination and internal stator iron core air gap, cup-shaped rotor is fixedly connected by movable sleeve with rotating shaft, and rotating shaft is pacified by two bearings
On housing, the axis of the output winding of external stator（D-axis）The magnetic axis of permanent magnetic steel is embedded in internal stator iron core（Quadrature axis）
It is mutually orthogonal.
Another second of form:Described permanent magnetic steel insertion external stator is unshakable in one's determination, and output winding is arranged in external stator iron core,
The axis of the output winding of external stator（D-axis）The magnetic axis of permanent magnetic steel unshakable in one's determination with embedded external stator（Quadrature axis）It is mutually orthogonal.It is fixed
Sub- iron core is externally provided with nonferromagnetic material fixed cover, and the set is fixed with base.
The third another form:Described permanent magnetic steel insertion external stator is unshakable in one's determination, and output winding is arranged in internal stator iron core,
The axis of the output winding of internal stator iron core（D-axis）The magnetic axis of permanent magnetic steel unshakable in one's determination with embedded external stator（Quadrature axis）Mutually just
Hand over.Stator core is externally provided with nonferromagnetic material fixed cover, and the set is fixed with base.
Described rotating shaft is made using stainless steel material, and described housing is made using ferromagnetic material, and stator core uses
Silicon steel sheet, described output winding use copper magnet wire, and described cup-shaped rotor winding is using resistivity small copper or aluminium.
Beneficial effect：Because the d-axis of sensor, quadrature-axis reluctance are different, so with whole entirely using the default of permanent magnetic steel
Minor structure is compared, and has higher sensitivity, and export electromotive force and rotation（Angle）Acceleration corresponds, and precision is high, moreover,
It is simple in construction；Because sensor is coaxially connected with transmission system, rotate（Angle）Acceleration signal obtains directly, therefore, user
Just.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of embodiment 1；
Fig. 3 is the structural representation of embodiment 2；
Fig. 4 is the structural representation of embodiment 3.
Embodiment
Embodiment 1, as shown in Figure 1 and Figure 2, the permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait,
Center including housing 2, described housing is provided with a horizontal rotating shaft 1, and external stator iron core 3 is fixed in housing 2, external stator
Slot for winding unshakable in one's determination in be provided with output winding 6, internal stator iron core 4 is embedded in permanent magnetic steel 7, and cup-shaped rotor 5 is fixed and installed
Between the air gap of outer stator core and internal stator iron core, cup-shaped rotor is fixedly connected by movable sleeve with rotating shaft, and rotating shaft passes through two
Individual bearing is arranged on housing, the axis of the output winding in external stator（D-axis）Permanent magnetic steel is embedded in internal stator iron core
Magnetic axis（Quadrature axis）It is mutually orthogonal.
Embodiment 2, as shown in Figure 1, Figure 3, the permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait,
Center including housing 2, described housing is provided with a horizontal rotating shaft 1, and external stator iron core 3 is externally provided with nonferromagnetic material fixed cover 8,
The set is fixed in housing 2, and described permanent magnetic steel 7 insertion external stator iron core 3, output winding 6 is arranged on external stator iron
In the heart 3, the axis of the output winding in external stator（D-axis）The magnetic axis of permanent magnetic steel unshakable in one's determination with embedded external stator（Quadrature axis）Mutually
Mutually orthogonal, cup-shaped rotor is fixed and is arranged on that external stator is unshakable in one's determination between the air gap of internal stator iron core 4, and cup-shaped rotor 5 passes through activity
Set is fixedly connected with rotating shaft 1, and rotating shaft 1 is arranged on housing 2 by two bearings.
Embodiment 3, as Figure 1 and Figure 4, the permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait,
Center including housing 2, described housing is provided with a horizontal rotating shaft 1, and external stator iron core 3 is externally provided with nonferromagnetic material fixed cover 8,
The set is fixed in housing 2, and described permanent magnetic steel 7 insertion external stator iron core 3, output winding 6 is arranged on inner stator iron
In the heart 4, the axis of the output winding in internal stator iron core（D-axis）The magnetic axis of permanent magnetic steel unshakable in one's determination with embedded external stator（Hand over
Axle）It is mutually orthogonal.Cup-shaped rotor is fixed and is arranged on that external stator is unshakable in one's determination between the air gap of internal stator iron core, and cup-shaped rotor 5 passes through
Movable sleeve is fixedly connected with rotating shaft 1, and rotating shaft 1 is arranged on housing 2 by two bearings.
Its operation principle is as follows：By taking example one as an example, permanent magnet excitation magnet steel is embedded in internal stator iron core, and output winding is embedded in
In external stator iron core, and the winding axis of output winding and the magnetic direction of permanent magnetic steel are mutually orthogonal, structure between two stator cores
Into air-gap field, cup-shaped rotor winding is located at concentric with stator in the air gap between inside and outside stator core, cup-shaped rotor and sensing
Device rotating shaft connection can rotate relative to stator.If the axis for exporting winding is d-axis, then permanent magnetic steel axis is quadrature axis,
When the magnetic line of force passes through inner stator, the magnetic resistance in d-axis direction is mainly determined by the magnetic resistance of the ferromagnetic material of internal stator iron core, quadrature axis side
To magnetic resistance mainly then determined by the permanent magnetic steel magnetic resistance in inner stator, so, the magnetic resistance of d-axis is much smaller than the magnetic resistance of quadrature axis.Work
When making, sensor rotating shaft coaxially couples with the power transmission shaft of system under test (SUT).Power transmission shaft such as system under test (SUT) makees permanent rotary speed movement, cup
Rotor also makees permanent rotary speed movement, then produces potential in cup-shaped rotor winding, and this potential produces rotor current, and rotor current produces magnetic
, now, the magnetic field magnetic potential constant amplitude, stator output winding potential is zero；Power transmission shaft such as system under test (SUT) makees non-permanent rotating speed
Motion, that is, rotation be present（Angle）Acceleration, then cup-shaped rotor also make non-permanent rotary speed movement, because excitation field is constant, then cup
Caused potential size is corresponding with the rotating speed of the non-permanent rotary speed movement of system in rotor windings, and this potential produces rotor current,
So as to produce the electric current changed over time in cup-shaped rotor, magnetic field magnetic potential amplitude also changes over time produced by the rotor current,
The magnetic field that the magnetic potential amplitude changes over time interlinks with stator output winding, so as to produce output electricity in stator output winding
Gesture, the output potential are corresponding with the rotation speed change of system.It is big more than direct axis reluctance to be additionally, since quadrature-axis reluctance, so, output
Caused induced electromotive force is compared with whole inner stator is all by the situation that permanent magnetic steel is formed in winding, corresponding to same output around
The group number of turn, same magnetic field intensity, same rotating angular acceleration, then the different structure of d-axis, quadrature-axis reluctance can export bigger defeated
Go out electromotive force, i.e. sensitivity improves.
Claims (8)
- A kind of 1. permanent magnetism rotating angular acceleration sensor that d-axis and quadrature-axis reluctance do not wait, it is characterised in that：It is described including housing The center of housing be provided with a horizontal rotating shaft, external stator iron core is fixed in housing, is set in the slot for winding unshakable in one's determination of external stator Output winding is equipped with, internal stator iron core is embedded in permanent magnetic steel, and cup-shaped rotor is arranged on external stator iron core and internal stator iron core Between air gap, cup-shaped rotor is fixedly connected by movable sleeve with rotating shaft, and rotating shaft is arranged on housing by two bearings, external stator The magnetic axis that the axis of output winding is embedded in permanent magnetic steel with internal stator iron core is mutually orthogonal, the power transmission shaft of rotating shaft and system under test (SUT) Coaxial connection.
- A kind of 2. permanent magnetism rotating angular acceleration sensor that d-axis and quadrature-axis reluctance do not wait, it is characterised in that:It is described including housing The center of housing be provided with a horizontal rotating shaft, external stator iron core is fixed in housing, and permanent magnetic steel insertion external stator is unshakable in one's determination, Output winding is arranged in external stator iron core, and external stator iron core is externally provided with nonferromagnetic material fixed cover, and the set is fixed on shell In vivo, the magnetic axis of the axis of the output winding of the external stator permanent magnetic steel unshakable in one's determination with embedded external stator is mutually orthogonal, cup-shaped rotor Fix and be arranged on external stator it is unshakable in one's determination cup-shaped rotor is fixedly connected by movable sleeve with rotating shaft between the air gap of internal stator iron core, Rotating shaft is arranged on housing by two bearings, and rotating shaft coaxially couples with the power transmission shaft of system under test (SUT).
- A kind of 3. permanent magnetism rotating angular acceleration sensor that d-axis and quadrature-axis reluctance do not wait, it is characterised in that:It is described including housing The center of housing be provided with a horizontal rotating shaft, external stator iron core is fixed in housing, and permanent magnetic steel insertion external stator is unshakable in one's determination, Output winding is arranged in internal stator iron core, and external stator iron core is externally provided with nonferromagnetic material fixed cover, and the set is fixed on shell In vivo, the magnetic axis of the axis of the output winding of the internal stator iron core permanent magnetic steel unshakable in one's determination with embedded external stator is mutually orthogonal, cup Rotor is fixed and is arranged between the external stator air gap unshakable in one's determination internal stator iron core, and cup-shaped rotor fixes company by movable sleeve and rotating shaft Connect, rotating shaft is arranged on housing by two bearings, and rotating shaft coaxially couples with the power transmission shaft of system under test (SUT).
- 4. the permanent magnetism rotating angular acceleration sensor of a kind of d-axis according to claim 1,2 or 3 and quadrature-axis reluctance not etc., It is characterized in that:Described rotating shaft is made using stainless steel material.
- 5. the permanent magnetism rotating angular acceleration sensor of a kind of d-axis according to claim 1,2 or 3 and quadrature-axis reluctance not etc., It is characterized in that:Described housing is made using ferromagnetic material.
- 6. the permanent magnetism rotating angular acceleration sensor of a kind of d-axis according to claim 1,2 or 3 and quadrature-axis reluctance not etc., It is characterized in that:External stator is unshakable in one's determination and inner stator uses silicon steel sheet.
- 7. the permanent magnetism rotating angular acceleration sensor of a kind of d-axis according to claim 1,2 or 3 and quadrature-axis reluctance not etc., It is characterized in that:Described output winding uses copper magnet wire.
- 8. the permanent magnetism rotating angular acceleration sensor of a kind of d-axis according to claim 1,2 or 3 and quadrature-axis reluctance not etc., It is characterized in that:The winding of described cup-shaped rotor is using resistivity small copper or aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259099.7A CN104034916B (en) | 2014-06-11 | 2014-06-11 | The permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410259099.7A CN104034916B (en) | 2014-06-11 | 2014-06-11 | The permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait |
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| Publication Number | Publication Date |
|---|---|
| CN104034916A CN104034916A (en) | 2014-09-10 |
| CN104034916B true CN104034916B (en) | 2017-11-28 |
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| CN201410259099.7A Expired - Fee Related CN104034916B (en) | 2014-06-11 | 2014-06-11 | The permanent magnetism rotating angular acceleration sensor that a kind of d-axis and quadrature-axis reluctance do not wait |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299048A (en) * | 2008-07-04 | 2008-11-05 | 嘉兴学院 | Rotating angular acceleration sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61167869A (en) * | 1985-01-18 | 1986-07-29 | Diesel Kiki Co Ltd | Acceleration sensor |
| US6282961B1 (en) * | 1999-09-24 | 2001-09-04 | Cda Astro Intercorp | Permanent magnet rotary accelerometer |
| CN201237606Y (en) * | 2008-07-04 | 2009-05-13 | 嘉兴学院 | Permanent magnet type rotating angular acceleration sensor |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299048A (en) * | 2008-07-04 | 2008-11-05 | 嘉兴学院 | Rotating angular acceleration sensor |
Non-Patent Citations (1)
| Title |
|---|
| 空心杯电机电磁阻力矩特性的实验研究;罗玲 等;《微特电机》;20081231(第4期);1-2 * |
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| CN104034916A (en) | 2014-09-10 |
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