CN108988704A - A kind of brshless DC motor low speed delay service time setting method - Google Patents
A kind of brshless DC motor low speed delay service time setting method Download PDFInfo
- Publication number
- CN108988704A CN108988704A CN201810917630.3A CN201810917630A CN108988704A CN 108988704 A CN108988704 A CN 108988704A CN 201810917630 A CN201810917630 A CN 201810917630A CN 108988704 A CN108988704 A CN 108988704A
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- CN
- China
- Prior art keywords
- brshless
- motor
- service time
- low speed
- setting method
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/15—Controlling commutation time
Abstract
The invention discloses a kind of brshless DC motor low speed to postpone service time setting method, and the setting method is: after brshless DC motor enters Steady-state in Low Speed working condition, it is 0 that phase retardation service time initial value is opened in setting；Each commutating period later will open phase retardation service time gradually be incremented by 1 microsecond；Record brshless DC motor revolving speed Sa before each commutating period commutation；Record brshless DC motor revolving speed Sb in each commutating period；The Sa is subtracted into the Sb, obtains brshless DC motor revolving speed deviation delta S；It is corresponding when using the absolute value minimum of Δ S/Sa to open phase retardation service time as brshless DC motor low speed delay service time setting value.
Description
Technical field
The invention belongs to brshless DC motor control field, it is related to a kind of brshless DC motor, more particularly to a kind of brushless
Direct current generator low speed postpones service time setting method.
Background technique
Brshless DC motor has many advantages, such as structure is simple, power density is high, control is simple.In recent years, brushless straight
Galvanic electricity machine has obtained increasingly extensive application in the industrial circles such as high-performance speed-regulating system and servo-control system.
The commutation torque ripple generated when brshless DC motor commutation, can cause motor vibrating, noise, limit such electricity
The application range of machine.By taking 120 ° of brshless DC motor conductings, three phase six state controls as an example, the brshless DC motor of low speed operation
When commutation, the current changing rate for opening phase is excessive, returns the reason is that opening mutually electricity in brshless DC motor commutation process
Stream does not add control, and this generates commutation torque ripples.So far, the low speed delay in brshless DC motor commutation process is opened
The research of logical time setting technology is very few, and the present patent application technology is not yet seen in report.
Summary of the invention
The purpose of the present invention is to provide a kind of brshless DC motor low speed delay service time setting method, can cut
Weak brshless DC motor low speed commutation torque ripple.
In order to achieve the above objectives, solution of the invention is:
A kind of brshless DC motor low speed delay service time setting method, includes the following steps:
Step 1: determining brshless DC motor in commutation process after control brshless DC motor enters steady state operating conditions
In open phase, it is 0 that the delay service time initial value for opening phase, which is arranged,；
Step 2: in each commutating period later, by it is described open phase retardation service time be gradually incremented by 1 it is micro-
Second；
Step 3: recording in each commutating period, brshless DC motor revolving speed Sa before commutation；
Step 4: recording in each commutating period, brshless DC motor revolving speed Sb in commutation process；
Step 5: the Sa is subtracted the Sb, brshless DC motor revolving speed deviation delta S is obtained；
Step 6: when the absolute value minimum of Δ S/Sa, using the corresponding delay service time for opening phase as brushless direct-current
Motor postpones service time setting value.
After adopting the above scheme, the low speed in the settable brshless DC motor commutation process of the present invention postpones service time,
To have the function that weaken brshless DC motor low speed commutation torque ripple.
Detailed description of the invention
Fig. 1 is the flow chart of setting method of the present invention.
Specific embodiment
Below with reference to attached drawing, technical solution of the present invention and beneficial effect are described in detail.
As shown in Figure 1, a kind of brshless DC motor low speed of the present invention postpones service time setting method, including walk as follows
It is rapid:
Step 1: determining brshless DC motor in commutation after control brshless DC motor enters Steady-state in Low Speed working condition
In the process open phase, it is 0 that the delay service time initial value for opening phase, which is arranged,；
Step 2: in each commutating period later, by it is described open phase retardation service time be gradually incremented by 1 it is micro-
Second；
Step 3: recording in each commutating period, brshless DC motor revolving speed Sa before commutation；
Step 4: recording in each commutating period, brshless DC motor revolving speed Sb in commutation process；
Step 5: the Sa is subtracted the Sb, brshless DC motor revolving speed deviation delta S is obtained；
Step 6: when the absolute value minimum of Δ S/Sa, using the corresponding delay service time for opening phase as brushless direct-current
Postpone the setting value of service time under motor lower-speed state.
To sum up, a kind of brshless DC motor low speed postpones service time setting method, settable brshless DC motor commutation
Low speed in the process postpones service time, to have the function that weaken brshless DC motor low speed commutation torque ripple.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (1)
1. a kind of brshless DC motor low speed postpones service time setting method, which comprises the steps of:
Step 1: determining brshless DC motor in commutation process after control brshless DC motor enters steady state operating conditions
Phase is opened, it is 0 that the delay service time initial value for opening phase, which is arranged,；
Step 2: in each commutating period later, opens phase retardation service time by described and be gradually incremented by 1 microsecond；
Step 3: recording in each commutating period, brshless DC motor revolving speed Sa before commutation；
Step 4: recording in each commutating period, brshless DC motor revolving speed Sb in commutation process；
Step 5: the Sa is subtracted the Sb, brshless DC motor revolving speed deviation delta S is obtained；
Step 6: when the absolute value minimum of Δ S/Sa, using the corresponding delay service time for opening phase as brshless DC motor
Postpone service time setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917630.3A CN108988704A (en) | 2018-08-13 | 2018-08-13 | A kind of brshless DC motor low speed delay service time setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917630.3A CN108988704A (en) | 2018-08-13 | 2018-08-13 | A kind of brshless DC motor low speed delay service time setting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108988704A true CN108988704A (en) | 2018-12-11 |
Family
ID=64552759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810917630.3A Withdrawn CN108988704A (en) | 2018-08-13 | 2018-08-13 | A kind of brshless DC motor low speed delay service time setting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108988704A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355334A (en) * | 2007-07-27 | 2009-01-28 | 比亚迪股份有限公司 | Control method for correcting phase of brushless DC motor without position sensor |
| JP2010284013A (en) * | 2009-06-05 | 2010-12-16 | Panasonic Corp | Inverter controller, electric compress unit and electrical household apparatus |
| CN103248291A (en) * | 2013-05-30 | 2013-08-14 | 北京航空航天大学 | Position-free sensor control system of high speed brushless direct current motor |
| CN106059406A (en) * | 2016-06-15 | 2016-10-26 | 哈尔滨工程大学 | Method for suppressing torque pulsation of brushless direct current motor based on delayed Hall signal |
| CN106787996A (en) * | 2016-12-26 | 2017-05-31 | 北京机械设备研究所 | A kind of brshless DC motor commutation deviation real-time correction method |
| CN107749725A (en) * | 2017-10-20 | 2018-03-02 | 哈尔滨工程大学 | A kind of commutation bearing calibration of position-sensor-free DC brushless motor |
-
2018
- 2018-08-13 CN CN201810917630.3A patent/CN108988704A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355334A (en) * | 2007-07-27 | 2009-01-28 | 比亚迪股份有限公司 | Control method for correcting phase of brushless DC motor without position sensor |
| JP2010284013A (en) * | 2009-06-05 | 2010-12-16 | Panasonic Corp | Inverter controller, electric compress unit and electrical household apparatus |
| CN103248291A (en) * | 2013-05-30 | 2013-08-14 | 北京航空航天大学 | Position-free sensor control system of high speed brushless direct current motor |
| CN106059406A (en) * | 2016-06-15 | 2016-10-26 | 哈尔滨工程大学 | Method for suppressing torque pulsation of brushless direct current motor based on delayed Hall signal |
| CN106787996A (en) * | 2016-12-26 | 2017-05-31 | 北京机械设备研究所 | A kind of brshless DC motor commutation deviation real-time correction method |
| CN107749725A (en) * | 2017-10-20 | 2018-03-02 | 哈尔滨工程大学 | A kind of commutation bearing calibration of position-sensor-free DC brushless motor |
Non-Patent Citations (1)
| Title |
|---|
| 林明耀 等: "基于直接反电动势法的无刷直流电机准确换相新方法", 《东南大学学报（自然科学版）》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181211 |
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| WW01 | Invention patent application withdrawn after publication |