CN108426599A - A kind of magnetic coder trouble hunting method - Google Patents
A kind of magnetic coder trouble hunting method Download PDFInfo
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- CN108426599A CN108426599A CN201810195870.7A CN201810195870A CN108426599A CN 108426599 A CN108426599 A CN 108426599A CN 201810195870 A CN201810195870 A CN 201810195870A CN 108426599 A CN108426599 A CN 108426599A
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- rotor
- motor
- encoder
- angle
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a kind of magnetic coder trouble hunting methods, include the following steps：Encoder is fitted into the rear end cap of motor by step [1], the magnetic pole of embedded a pair of pole on rotor；Step [2] all shows the angle of rotor of motor that the angle of rotor of motor that pwm signal obtains and encoder obtain by display；The difference for the angle of rotor of motor that the angle of rotor of motor obtained by pwm signal and encoder obtain is carried out comparison judgement by step [3] by software, without exception if difference is no more than ± 3 °, otherwise there is exception.The present invention can test during rotor rotates, and be compared by software, and fail result is directly indicated, simplify testing procedure, substantially increase maintenance efficiency.
Description
Technical field
The present invention relates to a kind of magnetic coder trouble hunting methods.
Background technology
Magnetic coder is commonly used to detection motor rotor position, generally by following 2 kinds of modes output rotor position angle
Degree, the first A B Z incremental encoding output rotor angles, be for second the output of PWM duty cycle angle.Generally in encoder batch
Production kind, erection welding can encounter abnormal signal, and maintenance personnel measures one when maintenance with each signal of multimeter
Under, multimeter can only overhaul when stationary rotor, and be difficult to judge failure, and workload is very big, and positioning failure is very
Slowly, maintenance efficiency is low.
Invention content
The purpose of the present invention is overcoming the shortcomings of in existing product, a kind of magnetic coder trouble hunting method is provided.
In order to achieve the above object, the present invention is achieved by the following technical solutions：
A kind of magnetic coder trouble hunting method, includes the following steps：
Encoder is fitted into the rear end cap of motor by step [1], the magnetic pole of embedded a pair of pole on rotor so that coding
Effective distance is kept between device and magnetic pole, and upper two reversed LED lights are connected between the A, B signal of encoder；
Then step [2], manual rotation rotor pass through until motor speed reaches between 20rpm ~ 180rpm
Pwm signal obtains angle of rotor of motor, also obtains angle of rotor of motor by encoder, and the motor that pwm signal is obtained turns
The angle of rotor of motor that subangle and encoder obtain all is shown by display；
Step [3], the rotor angle of electric machine for being obtained the angle of rotor of motor obtained by pwm signal and encoder by software
The difference of degree carries out comparison judgement, without exception if difference is no more than ± 3 °, otherwise there is exception, then passes through display and show mistake
Accidentally state shows ERROR, if the two reversed LED lights connected between A, B signal can alternately be dodged with rotor rotation
Bright, then A, B signal are without exception；If two reversed LED lights A, connected between B signal do not replace with rotor rotation
Flicker, then abnormal is A, B signal has exception；If rotor rotates a circle, the angle of rotor of motor that encoder obtains does not go out
It is 0 ° existing, then the abnormal Z signals for encoder have the Z signals of abnormal otherwise encoder without exception；If obtaining electricity by pwm signal
Machine rotor angle has often, then abnormal have exception for pwm signal.
It is cylinder as preferred magnetic pole, the height of a diameter of 6mm of the magnetic pole, the magnetic pole are 2.5mm, the magnetic
The magnetic field intensity of column is 45mT ~ 75mT.
It is charactron as preferred display.
It is 0.5mm ~ 1.9mm as the preferred effective distance.
Beneficial effects of the present invention are as follows：The present invention can test during rotor rotates, and be compared by software, by event
Barrier result directly indicates, simplifies testing procedure, substantially increases maintenance efficiency.
Description of the drawings
Fig. 1 is the magnetic coder installation diagram of the present invention；
Fig. 2 is PWM output signal figure；
Fig. 3 is A, B, Z signal waveforms and acquisition rotor angle oscillogram of encoder；
Fig. 4 is the circuit diagram that two reversed LED lights are connected between the A of encoder, B signal.
Specific implementation mode
Technical scheme of the present invention is described further below in conjunction with the accompanying drawings：
Embodiment：
A kind of magnetic coder trouble hunting method, includes the following steps：
Step [1], as shown in Figure 1, encoder 2 is fitted into the rear end cap of motor, the magnetic of embedded a pair of pole on rotor
Column 1 so that effective distance 3 is kept between encoder 2 and magnetic pole 1, as shown in figure 4, being connected between the A, B signal of encoder 2
Upper two reversed LED lights, effective distance are 0.5mm ~ 1.9mm, and magnetic pole is cylinder, and a diameter of 6mm of magnetic pole is described
The height of magnetic pole is 2.5mm, and the magnetic field intensity of the magnetic pole is 45mT ~ 75mT, and effective distance is 0.5mm ~ 1.9mm；
Then step [2], manual rotation rotor pass through until motor speed reaches between 20rpm ~ 180rpm
Pwm signal obtains angle of rotor of motor, also obtains angle of rotor of motor by encoder 2, and the motor that pwm signal is obtained turns
The angle of rotor of motor that subangle and encoder 2 obtain all shows that display is charactron, passes through PWM by display
The method of signal acquisition angle of rotor of motor obtains angle of rotor of motor as shown in Figure 2 using capture high level time, leads to
The coding of encoder 2 is crossed, stored count LSB, the angle of rotor of motor method of acquisition is as shown in Figure 3；Display is charactron.
Step [3] is turned by the motor that software obtains the angle of rotor of motor obtained by pwm signal and encoder 2
The difference of subangle carries out comparison judgement, without exception if difference is no more than ± 3 °, otherwise there is exception, then aobvious by display
Show that error condition shows ERROR, if the reversed LED light of two connected between A, B signal can be handed over rotor rotation
For flicker, then A, B signal are without exception；If two reversed LED lights A, connected between B signal do not have with rotor rotation
It alternately flickers, then abnormal is A, B signal has exception；If rotor rotates a circle, the angle of rotor of motor that encoder 2 obtains does not have
0 ° is occurred, then the abnormal Z signals for encoder 2 there are the Z signals of abnormal otherwise encoder 2 without exception；Z signal detections are to adopt
It is inputted with external interrupt, when having Z signal rising edges to come, this when of the output of encoder 2 is mechanical zero, and software will
The angle that ABZ is obtained is reset.If obtaining angle of rotor of motor by pwm signal has often, then abnormal have exception for pwm signal,
Signal wire failures all in this way can be navigated to quickly, can quickly investigate failure.
The present invention can test during rotor rotates, and be compared by software, and fail result is directly indicated, letter
Change testing procedure, substantially increases maintenance efficiency.
It should be noted that listed above is only a kind of specific embodiment of the present invention.It is clear that the invention is not restricted to
Upper embodiment, can also be there are many deforming, in short, those skilled in the art can directly lead from present disclosure
All deformations for going out or associating, are considered as protection scope of the present invention.
Claims (4)
1. a kind of magnetic coder trouble hunting method, which is characterized in that include the following steps：
Encoder is fitted into the rear end cap of motor by step [1], the magnetic pole of embedded a pair of pole on rotor so that coding
Effective distance is kept between device and magnetic pole, and upper two reversed LED lights are connected between the A, B signal of encoder；
Then step [2], manual rotation rotor pass through until motor speed reaches between 20rpm ~ 180rpm
Pwm signal obtains angle of rotor of motor, also obtains angle of rotor of motor by encoder, and the motor that pwm signal is obtained turns
The angle of rotor of motor that subangle and encoder obtain all is shown by display；
Step [3], the rotor angle of electric machine for being obtained the angle of rotor of motor obtained by pwm signal and encoder by software
The difference of degree carries out comparison judgement, without exception if difference is no more than ± 3 °, otherwise there is exception, then passes through display and show mistake
Accidentally state shows ERROR, if the two reversed LED lights connected between A, B signal can alternately be dodged with rotor rotation
Bright, then A, B signal are without exception；If two reversed LED lights A, connected between B signal do not replace with rotor rotation
Flicker, then abnormal is A, B signal has exception；If rotor rotates a circle, the angle of rotor of motor that encoder obtains does not go out
It is 0 ° existing, then the abnormal Z signals for encoder have the Z signals of abnormal otherwise encoder without exception；If obtaining electricity by pwm signal
Machine rotor angle has often, then abnormal have exception for pwm signal.
2. a kind of magnetic coder trouble hunting method according to claim 1, which is characterized in that the magnetic pole is cylinder,
The height of a diameter of 6mm of the magnetic pole, the magnetic pole are 2.5mm, and the magnetic field intensity of the magnetic pole is 45mT ~ 75mT.
3. a kind of magnetic coder trouble hunting method according to claim 1, which is characterized in that the display is number
Pipe.
4. a kind of magnetic coder trouble hunting method according to claim 1, which is characterized in that the effective distance is
0.5mm~1.9mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195870.7A CN108426599A (en) | 2018-03-09 | 2018-03-09 | A kind of magnetic coder trouble hunting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810195870.7A CN108426599A (en) | 2018-03-09 | 2018-03-09 | A kind of magnetic coder trouble hunting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108426599A true CN108426599A (en) | 2018-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810195870.7A Pending CN108426599A (en) | 2018-03-09 | 2018-03-09 | A kind of magnetic coder trouble hunting method |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525051A (en) * | 2018-11-12 | 2019-03-26 | 西安微电机研究所 | A kind of miniature composite stepper motor of satellite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07177779A (en) * | 1992-03-23 | 1995-07-14 | Casio Electron Mfg Co Ltd | Rotating speed controller of motor |
| CN1975336A (en) * | 2005-11-29 | 2007-06-06 | 发那科株式会社 | Signal processing circuit for encoder |
| CN101995533A (en) * | 2009-08-11 | 2011-03-30 | 深圳市英威腾电气股份有限公司 | Real-time wire-break detection method and system for digital incremental encoder |
| CN201885729U (en) * | 2010-12-14 | 2011-06-29 | 长春荣德光学有限公司 | Magnetic electricity rotary encoder |
| CN103580523A (en) * | 2013-11-19 | 2014-02-12 | 苏州爱科博瑞电源技术有限责任公司 | Multipath phase-shift PWM wave generating circuit based on FPGA |
-
2018
- 2018-03-09 CN CN201810195870.7A patent/CN108426599A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07177779A (en) * | 1992-03-23 | 1995-07-14 | Casio Electron Mfg Co Ltd | Rotating speed controller of motor |
| CN1975336A (en) * | 2005-11-29 | 2007-06-06 | 发那科株式会社 | Signal processing circuit for encoder |
| CN101995533A (en) * | 2009-08-11 | 2011-03-30 | 深圳市英威腾电气股份有限公司 | Real-time wire-break detection method and system for digital incremental encoder |
| CN201885729U (en) * | 2010-12-14 | 2011-06-29 | 长春荣德光学有限公司 | Magnetic electricity rotary encoder |
| CN103580523A (en) * | 2013-11-19 | 2014-02-12 | 苏州爱科博瑞电源技术有限责任公司 | Multipath phase-shift PWM wave generating circuit based on FPGA |
Non-Patent Citations (2)
| Title |
|---|
| 王力等: "基于磁编码器永磁同步电动机转速及位置的检测", 《哈尔滨理工大学学报》 * |
| 郭丹等: "基于磁编码器无刷直流电机转速及位置的检测", 《计算机与数字工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525051A (en) * | 2018-11-12 | 2019-03-26 | 西安微电机研究所 | A kind of miniature composite stepper motor of satellite |
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Application publication date: 20180821 |
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