CN1298222A - Permanent magnetic composite uniphase step motor - Google Patents
Permanent magnetic composite uniphase step motor Download PDFInfo
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- CN1298222A CN1298222A CN 99117384 CN99117384A CN1298222A CN 1298222 A CN1298222 A CN 1298222A CN 99117384 CN99117384 CN 99117384 CN 99117384 A CN99117384 A CN 99117384A CN 1298222 A CN1298222 A CN 1298222A
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- uniphase
- step motor
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Abstract
The step motor includes stator, rotor, back-run preventing ratchet mechanism, front end cap, back end cap and other parts. The stator permanent magnet pole has winding and the rotor salient pole has a raise hawk nosed structure. The step motor may be driven by a monopolar pulse power supply to provide large output moment, and has excellent high frequency and low frequency performance, that is, the ability of maintaining stable unidirectional rotation even being driven by high frequency or low frequency pulse signal.
Description
The invention belongs to machine field, be specifically related to a kind of permanent magnetic composite uniphase step motor.
Our seen permanent magnetic composite uniphase step motor has two kinds of versions at present.A kind of stator of motor is a unsymmetric structure, rotor is a p-m rotor, as the designed quartzy turret clock of Clock ﹠ Watch Technology Development Dep., Yantai Sci. ﹠ Tech. Dev. Centre Sun Gang, Luan Zhu pavilion with the (patent announcement number: CN2079828U) of torque permanent magnet composite uniphase step motor energetically.Another kind of motor is the hybrid permanent magnet type composite uniphase step motor, on stator, install the interpole that produces second harmonic additional, perhaps the particular design by tooth proportions produces second harmonic, the comprehensive result of torque angle displacement characteristic makes its shape form asymmetrical shape, the positive half wave width is greater than π, and negative half-wave starts the angle less than π thereby form, and have certain starting torque, motor can be turned round by normal starting.As utilize and design non-uniform gap between the stator and rotor, make the static-stability position and the balance position of rotor be equipped with certain angle, thereby has certain starting angle, as the pretty designed end face air gap type permanent magnetic composite uniphase step motor (document: small and special electric machine of journey scholar, 1990, (1) P.35-36).Have the axial end air gap, typical case step angle is 60 °, can do directed the rotation under the driving of unipolarity narrow pulse power supply.
The electric pulse that applies winding owing to first kind of motor is a positive negative pulse stuffing, and promptly positive pulse makes a move, and negative pulse makes a move, and requiring power supply is positive-negative power, and this is actual to be the doublebeat operation.And in some engineering is used, needing the stepping motor of the single-phase unipolar pulse control of big moment output, this motor can not meet the demands.Though and second kind of motor can be done directed the rotation under the driving of unipolar pulse power supply, but its output torque is less, and the necessary running that guarantees rotor high-speed, could utilize the kinetic energy of rotor to guarantee that the folk prescription of motor is to rotation, therefore its drive pulse signal is necessary for high-frequency signal, is narrow pulse.In low-frequency range, this motor performance is very unreliable, even can't the bonding direction rotate at all.
The object of the present invention is to provide a kind of permanent magnetic composite uniphase step motor.It can provide bigger output torque by the unipolar pulse power drives, and has good high frequency, low frequency performance, promptly all can guarantee that stable folk prescription is to rotation when high frequency or low frequency pulse signal driving.
Permanent magnetic composite uniphase step motor of the present invention comprises parts such as stator, rotor, anti-reverse ratchet and pawl arrangement, front end housing, rear end cap.It is characterized in that being wound with coil windings on the permanent-magnet pole of stator, have projection on the salient pole of rotor.
Bulge-structure on the rotor with salient pole can be clockwise or anticlockwise olecranon-like, and it is better between 30 degree are spent to 40 that the olecranon-like projection on the described salient pole is goed deep into angle [alpha], and oblique angle γ is less than 15 degree.The upper limb of the olecranon-like projection on the rotor pole has a straight line part.
The stator of permanent magnetic composite uniphase step motor of the present invention is a salient-pole structure, the arrangement that intermeshes of the soft magnetism magnetic pole that constitutes by soft magnetic material and the permanent magnetism magnetic pole that constitutes by permanent magnetic material, and it is arranged evenly that the polarity of permanent magnetism magnetic pole is pressed N-S-N-S.Be wound with stator winding on the magnetic pole of the stator, winding is divided into two covers, and a cover winding is on the soft magnetism magnetic pole, and another set of winding is on permanent magnetism magnetic pole, and two cover windings can be in parallel, also can connect.During the winding energising, the winding polarity on the permanent magnetism magnetic pole is opposite with the polarity of permanent magnetism magnetic pole, and the two magnetic potential equal and opposite in direction promptly mutually offsets.Rotor is the salient-pole structure that has the olecranon shape.Olecranon stretch out the direction of rotation that direction has determined rotor.
During the motor no power, rotor is positioned under the stator permanent magnet magnetic pole, when motor windings is switched on, the permanent magnetic potential of hydromagnetic magnetic pole and winding magnetic potential mutually offset, and non-electromagnetic-force square between rotor, the rotor olecranon rotates forward under the magnetic potential effect of soft magnetism magnetic pole, until the olecranon top is with till stator soft magnetism magnetic pole aligns, motor has been walked a step angle.Motor outage, the winding of permanent magnetism magnetic pole has not had magnetic potential, and the soft magnetism magnetic pole does not have magnetic potential yet, thereby olecranon continues rotation forward under the effect of permanent magnetic potential, and with till permanent magnetism magnetic pole aligns, motor has been gone ahead again a step up to the olecranon top.
Ratchet and pawl arrangement mainly is to be used to prevent the motor opposite spin.Ratchet is fixed on the armature spindle, with the equidirectional rotation of rotor.Ratchet is fixed on the rear end cap.
When motor arrives at second electric pulse, repeat aforementioned process again.
Adopt the technique scheme designed motor can be under the pulse drive signal of unipolarity broad frequency band continuously folk prescription and can accomplish bigger output torque to running.
We adopt technique scheme to design the permanent magnetic composite uniphase step motor that a kind of step angle is 45 degree, and have successfully carried out load-carrying system integration test.Below in conjunction with accompanying drawing, embodiment the present invention is made a detailed description.
Fig. 1 permanent magnetic composite uniphase step motor stator and rotor sructure of the present invention schematic diagram
The olecranon structural representation of Fig. 2 permanent magnetic composite uniphase step motor rotor of the present invention
Fig. 3 permanent magnetic composite uniphase step motor ratchet and pawl arrangement of the present invention schematic diagram
Fig. 4 permanent magnetic composite uniphase step motor embodiment's of the present invention
Curve
Fig. 1 is the stator and rotor sructure schematic diagram of permanent magnetic composite uniphase step motor of the present invention
The stator of permanent magnetic composite uniphase step motor of the present invention (1) is a salient-pole structure, constitute by eight stator poles, wherein four very soft magnetic material constitute, be soft magnetism magnetic pole (3), other four permanent magnetic materials very, their arrangements that intermeshes, it is arranged evenly that the polarity of permanent magnetism magnetic pole (4) is pressed N-S-N-S.
Be wound with stator winding (5) on the magnetic pole of the stator, winding adopts two covers, and a cover winding is on the soft magnetism magnetic pole, and another set of winding is on permanent magnetism magnetic pole, and two cover windings can be in parallel, also can connect.But a requirement is arranged, and when being exactly the winding energising, the winding polarity on the permanent magnetism magnetic pole (4) is opposite with the polarity of permanent magnetism magnetic pole (4), and the magnetic potential equal and opposite in direction promptly mutually offsets.The rare earth permanent magnet magnetizing direction thickness that is used for permanent magnetism magnetic pole (4) that we adopted is less than 1.2mm, and umber of turn is greater than 100 circles.Also can adopt other relevant parameters.
Fig. 2 is the olecranon structural representation of the rotor of permanent magnetic composite uniphase step motor of the present invention
Rotor (2) is for having the salient-pole structure of olecranon shape.Olecranon (6) stretch out the direction of rotation that direction has determined motor.Olecranon (6) part outer rim is a skew lines (7), and this skew lines (7) has important function to the assurance and the stability of motor when low frequency signal drives of the step angle precision of motor.What characterize rotor olecranon (6) size has a top width b, gos deep into angle [alpha] and oblique angle γ.Olecranon (6) top width b equates with the stator facewidth, gos deep into starting angle and starting torque that angle [alpha] and oblique angle γ have determined motor.To 40 degree, γ is less than 15 degree at 30 degree for the α that we adopted.
Fig. 3 is a permanent magnetic composite uniphase step motor ratchet and pawl arrangement schematic diagram of the present invention
Ratchet and pawl arrangement mainly is to be used to prevent the motor opposite spin.Because motor is when the lower frequency pulse signal drives, rotor (2) because and between the permanent magnetism magnetic pole (4) air gap bigger, thereby rotor (2) is in the vibration at this stable equilibrium position place especially severity.With ratchet (8) Position Design is adjustable position, makes the ratchet can withstand ratchet (9) tooth root place just, is equivalent to increase a mechanical damper, guarantees that motor is in the out-of-step free ground stable operation of low-frequency resonance district.
Successfully by the complex engineering system integration test, the principle that proves this permanent magnetic composite uniphase step motor is feasible to permanent magnetic composite uniphase step motor of the present invention, has operability.The main performance index of the embodiment of the invention is:
Rated voltage: 12V
Motor internal resistance: 8.8 Ω
Motor external diameter: φ 2Omm
Motor length: 30mm
Step angle: 45 °
Step angle precision :≤± 4 °
Maximum output torque :≤115gcm
Fig. 4 is permanent magnetic composite uniphase step motor embodiment's of the present invention
Curve.
Claims (5)
1. a permanent magnetic composite uniphase step motor contains stator, rotor, anti-reverse ratchet and pawl arrangement, front end housing, rear end cap, it is characterized in that being wound with coil windings (5) on the permanent magnetism magnetic pole (4) of stator (1), has projection on the salient pole of rotor (2).
2. permanent magnetic composite uniphase step motor according to claim 1 is characterized in that the projection on the rotor with salient pole can be the olecranon-like structure.
3. permanent magnetic composite uniphase step motor according to claim 2 is characterized in that, it is better to 40 degree at 30 degree that the olecranon-like bulge-structure on the described salient pole gos deep into angle [alpha], and oblique angle γ is less than 15 degree.
4. permanent magnetic composite uniphase step motor according to claim 2 is characterized in that the upper limb of the olecranon-like projection on the described rotor pole has a straight line part.
5. permanent magnetic composite uniphase step motor according to claim 1, it is characterized in that permanent magnetism magnetic pole (4) go up coil windings (5) around to determining by the reversed polarity of permanent magnetism magnetic pole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117384 CN1099752C (en) | 1999-11-24 | 1999-11-24 | Permanent magnetic composite uniphase step motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99117384 CN1099752C (en) | 1999-11-24 | 1999-11-24 | Permanent magnetic composite uniphase step motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1298222A true CN1298222A (en) | 2001-06-06 |
| CN1099752C CN1099752C (en) | 2003-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99117384 Expired - Fee Related CN1099752C (en) | 1999-11-24 | 1999-11-24 | Permanent magnetic composite uniphase step motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN1099752C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316722A (en) * | 2014-10-20 | 2015-01-28 | 中山明杰自动化科技有限公司 | Anti-reversing device of stepper motor |
| CN104702082A (en) * | 2013-12-05 | 2015-06-10 | 周宗元 | Stator follow-up stepping motor |
| CN106899121A (en) * | 2015-12-21 | 2017-06-27 | 日本电产三协株式会社 | Motor apparatus and dial indicator display device |
| CN111884376A (en) * | 2020-08-04 | 2020-11-03 | 珠海格力电器股份有限公司 | Single-phase permanent magnet self-starting motor and electric equipment with same |
-
1999
- 1999-11-24 CN CN 99117384 patent/CN1099752C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104702082A (en) * | 2013-12-05 | 2015-06-10 | 周宗元 | Stator follow-up stepping motor |
| CN104702082B (en) * | 2013-12-05 | 2018-05-15 | 周宗元 | Stator Follow-up type stepper motor |
| CN104316722A (en) * | 2014-10-20 | 2015-01-28 | 中山明杰自动化科技有限公司 | Anti-reversing device of stepper motor |
| CN106899121A (en) * | 2015-12-21 | 2017-06-27 | 日本电产三协株式会社 | Motor apparatus and dial indicator display device |
| CN106899121B (en) * | 2015-12-21 | 2019-01-04 | 日本电产三协株式会社 | Motor apparatus and dial indicator display device |
| CN111884376A (en) * | 2020-08-04 | 2020-11-03 | 珠海格力电器股份有限公司 | Single-phase permanent magnet self-starting motor and electric equipment with same |
| CN111884376B (en) * | 2020-08-04 | 2023-05-09 | 珠海格力电器股份有限公司 | Single-phase permanent magnet self-starting motor and electric equipment with same |
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| Publication number | Publication date |
|---|---|
| CN1099752C (en) | 2003-01-22 |
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Granted publication date: 20030122 Termination date: 20091224 |