CN109067268A - Brshless DC motor opens phase retardation and opens control method - Google Patents
Brshless DC motor opens phase retardation and opens control method Download PDFInfo
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- CN109067268A CN109067268A CN201810917319.9A CN201810917319A CN109067268A CN 109067268 A CN109067268 A CN 109067268A CN 201810917319 A CN201810917319 A CN 201810917319A CN 109067268 A CN109067268 A CN 109067268A
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- commutation
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Phase retardation is opened the invention discloses a kind of brshless DC motor and opens control method, is determined and is opened phase X, shutdown phase Y and non-commutation phase Z when brshless DC motor commutation；The electric current Ia in phase X commutation process is opened in detection, and the electric current Ib in detection shutdown phase Y commutation process detects the electric current Ic in non-commutation phase Z commutation process；Time t1 record current Ia equal with electric current Ic amplitude to Ia current amplitude from commutation start time；Amplitude when record current Ia is equal with electric current Ic amplitude | Ia1 |；Will | Ia1 | Ip1 is obtained divided by t1；The amplitude of record current Ib commutation start time | Ib1 |；Record current Ib reaches 0 time t2 from commutation start time to current amplitude；Will | Ib1 | Ip2 is obtained divided by t2；Ip1 is subtracted into Ip2, obtains deviation delta Ip；Deviation delta Ip progress PI operation is obtained into delay service time Ty；In next commutation process, control open phase X go again from commutation delay time start time Ty it is open-minded；Achieve the purpose that control brshless DC motor low-speed torque ripple.
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 opens phase retardation and opens control 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, commutation torque ripple can be produced, is returned the reason is that the climbing for opening phase is greater than under shutdown phase current
Drop rate is conducive to reduce the climbing for opening phase current, reaches control so going again open-minded by making to open phase retardation certain time
The purpose of brshless DC motor low speed commutation torque ripple processed.This case is based on this thinking and is formed.
Summary of the invention
The purpose of the present invention is to provide a kind of brshless DC motor and opens phase retardation and open control method, makes to open phase
Delay certain time go again it is open-minded, achieve the purpose that control 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 opens phase retardation and opens control method, includes the following steps:
Step 1: making brshless DC motor stable operation；
Step 2: determining that brshless DC motor opens phase X, shutdown phase Y and non-commutation phase Z in commutation process；
Step 3: the detection electric current Ia for opening phase X in commutation process, detects the shutdown phase Y in commutation process
In electric current Ib, detect the electric current Ic of the non-commutation phase Z in commutation process；
Step 4: record the electric current Ia from commutation start time to the electric current Ia amplitude moment equal with electric current Ic amplitude it
Between interval time t1；
Step 5: amplitude when record current Ia is equal with electric current Ic amplitude | Ia1 |；
Step 6: will | Ia1 | Ip1 is obtained divided by t1；
Step 7: recording the electric current Ib in the amplitude of commutation start time | Ib1 |；
Step 8: recording the interval time t2 when electric current Ib reaches 0 from commutation start time to current amplitude；
Step 9: will | Ib1 | Ip2 is obtained divided by t2；
Step 10: the Ip1 is subtracted the Ip2, deviation delta Ip is obtained；
Step 11: obtaining deviation delta Ip progress PI operation to be delayed to turn off time Ty；
Step 12: in next commutation process, controls and described open phase X from commutation delay time start time Ty again
Row is open-minded.
After adopting the above scheme, opening in the control brshless DC motor commutation process that the present invention can be simple and effective is mutually prolonged
Slow service time, to be conducive to the control of brshless DC motor low speed commutation torque ripple.
Detailed description of the invention
Fig. 1 is the flow chart of control 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.
It opens phase retardation as shown in Figure 1, the present invention provides a kind of brshless DC motor and opens control method, including walk as follows
It is rapid:
Step 1: running brshless DC motor low-speed stable；
Step 2: determining that brshless DC motor opens phase X, shutdown phase Y and non-commutation phase Z in commutation process；
Step 3: the detection electric current Ia for opening phase X in commutation process, detects the shutdown phase Y in commutation process
In electric current Ib, detect the electric current Ic of the non-commutation phase Z in commutation process；
Step 4: record the electric current Ia from commutation start time to the electric current Ia amplitude moment equal with electric current Ic amplitude it
Between interval time t1；
Step 5: amplitude when record current Ia is equal with electric current Ic amplitude | Ia1 |；
Step 6: will | Ia1 | Ip1 is obtained divided by t1；
Step 7: recording the electric current Ib in the amplitude of commutation start time | Ib1 |；
Step 8: recording the interval time t2 when electric current Ib reaches 0 from commutation start time to current amplitude；
Step 9: will | Ib1 | Ip2 is obtained divided by t2；
Step 10: the Ip1 is subtracted the Ip2, deviation delta Ip is obtained；
Step 11: obtaining deviation delta Ip progress PI operation to be delayed to turn off time Ty；
Step 12: in next commutation process, controls and described open phase X from commutation delay time start time Ty again
Row is open-minded.
To sum up, brshless DC motor of the present invention opens phase retardation and opens control method, when according to brshless DC motor commutation
The deviation of phase current change rate is opened mutually and turns off, opening in simple and effective control brshless DC motor commutation process is mutually prolonged
Slow service time is conducive to the control of 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 opens phase retardation and opens control method, which comprises the steps of:
Step 1: making brshless DC motor stable operation；
Step 2: determining that brshless DC motor opens phase X, shutdown phase Y and non-commutation phase Z in commutation process；
Step 3: the detection electric current Ia for opening phase X in commutation process, detects the shutdown phase Y in commutation process
Electric current Ib detects electric current Ic of the non-commutation phase Z in commutation process；
Step 4: recording the electric current Ia from commutation start time to the electric current Ia amplitude moment equal with electric current Ic amplitude
Interval time t1；
Step 5: amplitude when record current Ia is equal with electric current Ic amplitude | Ia1 |；
Step 6: will | Ia1 | Ip1 is obtained divided by t1；
Step 7: recording the electric current Ib in the amplitude of commutation start time | Ib1 |；
Step 8: recording the interval time t2 when electric current Ib reaches 0 from commutation start time to current amplitude；
Step 9: will | Ib1 | Ip2 is obtained divided by t2；
Step 10: the Ip1 is subtracted the Ip2, deviation delta Ip is obtained；
Step 11: obtaining deviation delta Ip progress PI operation to be delayed to turn off time Ty；
Step 12: controlling the phase X that opens in next commutation process and being opened from commutation delay time start time Ty is capable again
It is logical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917319.9A CN109067268A (en) | 2018-08-13 | 2018-08-13 | Brshless DC motor opens phase retardation and opens control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917319.9A CN109067268A (en) | 2018-08-13 | 2018-08-13 | Brshless DC motor opens phase retardation and opens control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109067268A true CN109067268A (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810917319.9A Pending CN109067268A (en) | 2018-08-13 | 2018-08-13 | Brshless DC motor opens phase retardation and opens control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113572390A (en) * | 2021-05-07 | 2021-10-29 | 联合汽车电子有限公司 | Driving method for noise suppression of brushless direct current motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154907A (en) * | 2007-08-21 | 2008-04-02 | 南京航空航天大学 | Correction method for position signal phase error of brushless DC motor without position sensor |
| US20140271237A1 (en) * | 2013-03-13 | 2014-09-18 | Shimadzu Corporation | Vacuum pump |
| CN104796050A (en) * | 2015-05-13 | 2015-07-22 | 哈尔滨工程大学 | Delay control method for inhibiting torque ripple of brushless direct-current motor |
| CN205051611U (en) * | 2015-10-09 | 2016-02-24 | 武汉市深蓝动力科技有限公司 | Motor drive system that restraines switched reluctance motor torque ripple |
-
2018
- 2018-08-13 CN CN201810917319.9A patent/CN109067268A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154907A (en) * | 2007-08-21 | 2008-04-02 | 南京航空航天大学 | Correction method for position signal phase error of brushless DC motor without position sensor |
| US20140271237A1 (en) * | 2013-03-13 | 2014-09-18 | Shimadzu Corporation | Vacuum pump |
| CN104796050A (en) * | 2015-05-13 | 2015-07-22 | 哈尔滨工程大学 | Delay control method for inhibiting torque ripple of brushless direct-current motor |
| CN205051611U (en) * | 2015-10-09 | 2016-02-24 | 武汉市深蓝动力科技有限公司 | Motor drive system that restraines switched reluctance motor torque ripple |
Non-Patent Citations (1)
| Title |
|---|
| 韦鲲等: "无刷直流电机换相转矩脉动的电流预测控制", 《浙江大学学报（工学版）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113572390A (en) * | 2021-05-07 | 2021-10-29 | 联合汽车电子有限公司 | Driving method for noise suppression of brushless direct current motor |
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Application publication date: 20181221 |
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