CN106787999A - The startup localization method and its circuit of a kind of direct-current brushless no-hall motor - Google Patents
The startup localization method and its circuit of a kind of direct-current brushless no-hall motor Download PDFInfo
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- CN106787999A CN106787999A CN201611209157.0A CN201611209157A CN106787999A CN 106787999 A CN106787999 A CN 106787999A CN 201611209157 A CN201611209157 A CN 201611209157A CN 106787999 A CN106787999 A CN 106787999A
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- voltage
- operational amplifier
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- startup
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Classifications
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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
- H02P6/20—Arrangements for starting
-
- 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
- H02P6/16—Circuit arrangements for detecting position
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses the startup localization method and its circuit of a kind of direct-current brushless no-hall motor, comprise the following steps：S1：Setting comparison voltage；S2：Timer resets, and two windings not detected of any conducting motor, timer starts timing, and now conducting electric current rises；S3：Winding current in step S2 is sampled and is processed and obtain measuring voltage；S4：Measurement voltage after treatment is compared with comparison voltage, when voltage is measured more than comparison voltage, S5 is jumped to；S5：Timer stops, and preserves timer data and corresponding two around group information, judges whether two windings not detected also, and S2 is jumped to if having, and S6 is jumped to if nothing；S6：Compare 6 groups of timer data information, from the time it is most long around group information as the winding nearest from magnetic field.By the position for detecting rotor before activation so that direct-current brushless no-hall motor thoroughly solves vibration problems in start-up course, the scope of application of motor is improve.
Description
Technical field
Present invention design machine field, the startup localization method and its electricity of more particularly to a kind of direct-current brushless no-hall motor
Road.
Background technology
The scope for using in direct current generator at present is more and more extensive, and DC Motor Drives are finer than classification, range of choice extensively,
Rotary speed type spectrum width, bears overload capacity by force, and also energy consumption is low in addition, superior performance, and vibration is small, and noise is low.With permanent magnet
With the continuous improvement and the continuous reduction of price of permanent magnetic material performance, what Power Electronic Technique was maked rapid progress tells development, respectively
Requirement more and more higher of the application field to motor, DC brushless motor application field will constantly extend, and this is corollary.
However, during direct current generator starts, rotate BLDC motors, it is necessary to give in a certain order
Sub- winding is powered.In order to determine which winding is incited somebody to action electric according to power-up sequence, it is known that the position of rotor is critically important.Usual rotor
Position detected by hall effect sensor embedded in stator.Traditional Hall sensor increased motor volume and into
This, motor connection line is more, is easily disturbed, and being worked under the severe working environment such as high temperature, high humidity, foul atmosphere can reduce sensor
Reliability, the installation accuracy of sensor directly affects the runnability of motor.
The startup method of existing brushless Hall-free motor, typically using pressure increases voltage so that the position of rotor
No matter home position where, all force to go to default position, then started by default program.Such startup side
Method, can produce jitter phenomenon so that motor accommodation is small, produce the phenomenon for starting low-response.
The content of the invention
The problem to be solved in the present invention is to produce shake existing when how to solve existing brushless Hall-free electric motor starting
As, and start the situation of low-response.
In order to solve the above problems, the invention provides a kind of startup localization method of direct-current brushless no-hall motor, bag
Include following steps：
S1：Setting comparison voltage；
S2：Timer resets, two windings not detected of any conducting motor, and timer starts timing, now in conducting electric current
Rise；
S3：Winding current in step S2 is sampled and is processed and obtain measuring voltage；
S4：Measurement voltage after treatment is compared with comparison voltage, when voltage is measured more than comparison voltage, is jumped to
S5；
S5：Timer stops, and preserves timer data and corresponding two around group information, judge whether not detect also two around
Group, jumps to S2 if having, and S6 is jumped to if nothing；
S6：Compare 6 groups of timer data information, from the time it is most long around group information as the winding nearest from magnetic field.
Carry out timing by being powered to different windings, the time of setting voltage reached between calculating different so groups, by when
Between length judge the position of rotor, i.e., before rotor is not moved, it becomes possible to accurately detect rotor-position by the method,
It is that applicable different scheme gives stator winding power by the position for calculating, that is, solves and directly control in original startup scheme
Shake and start the slower shortcoming of response that rotor-position processed is caused, the rapid nothing for realizing direct-current brushless no-hall motor is shaken
It is dynamic to start.
Overtime error reporting system is also set with, described overtime error reporting system is set with time limit parameter, when timer operation
Count and exceed time limit parameter, then stop position fixing process, send operation irregularity warning.The overtime error reporting system is mainly used for timing
There is automatic remedy during mistake in device or program, prevent because program error cause to wait indefinitely for measuring when
Between, break down non-detectable problem.
Included in current processing in step S3 carries out signal amplification by operational amplifier.Because actual logical to winding
Must assure that rotor is motionless when electric, that is, led to voltage is smaller, therefore sample rate current is smaller, be unfavorable for comparing, so needing logical
Crossing operational amplifier carries out signal amplification.
Measurement voltage in step S4 is compared with the size manner of comparison of comparison voltage using operational amplifier.Using
Operational amplifier is compared quickly and easily can be compared with comparison voltage, rapid results.
Also disclose a kind of startup positioning circuit of direct-current brushless no-hall motor, including signal amplification module and voltage ratio
Compared with module, described signal amplification module is connected with voltage comparison module, it is characterised in that described signal amplification module includes
Operational amplifier U1, resistance R20, R22, R26, R80, described R20 one end are connected with current input terminal, and the other end is put with computing
The positive input terminal connection of big device U1, described R22 one end is connected with current input terminal, and the other end is negative defeated with operational amplifier U1
Enter end connection, described R80 one end is connected with a 5V direct voltage sources, the other end connects with the positive input terminal of operational amplifier
Connect, described R26 one end is connected with the negative input end of operational amplifier, and the other end is connected with amplifier output end；Described voltage
Comparison module includes operational amplifier U2, resistance R4, R14 and electric capacity C15, described resistance R4 one end and the 2nd 5V DC voltages
Source connects, the positive input terminal connection of one end operational amplifier U2, described R14 one end ground connection, the other end and operational amplifier U2
Positive input terminal connection, the positive-negative input end of described electric capacity C15 two ends concatenation operation amplifiers, described operational amplifier U1
Output end be connected with the negative input end of operational amplifier U2.The circuit can process sample rate current, i.e., by sample rate current
It is compared with comparison voltage after being amplified and filtering, timing time is drawn in time, and the circuit structure is simple, is easy to life
Produce and process.
Resistance R8, described resistance R8 one end ground connection, the other end is connected with the negative input end of operational amplifier U2, R8 and
R14 is in parallel again with R4 partial pressure 5V, and the comparison voltage of U2B is limited to be reduced.
Also include being arranged on the electric capacity C9 of signal amplification module, electric capacity C9 one end ground connection, the other end and 5V electricity
Potential source is connected.The effect of C9 is mainly and filters out from a 5V power supply clutters, provides pure power supply to amplifier.
Also include being arranged on the electric capacity C10 of signal amplification module, described electric capacity C10 one end ground connection, the other end and computing
The positive input terminal connection of amplifier U1.Described electric capacity C10 sampling end filter actions.
The present invention has following beneficial effect：
1. motor vibration problems in traditional startup scheme are thoroughly solved.It is the position to rotor because this method is in start-up course
Put and directly judged, the position after judgement according to rotor is started with default optimal case, so eliminating original
The vibrations that forces location is brought so that the use scope and usage scenario of direct-current brushless no-hall motor are more extensive.
2. it is fast that response is started.Because original Starting mode needs to treat that rotor is rotated, it is stablized after turning to precalculated position
Afterwards, can be started, response is relatively slow, and the present invention is very fast to the position judgment of rotor, it is not necessary to which waiting to open
It is dynamic.
3. control method is simple.Circuit can complete judgement to rotor-position based on start-up circuit, with single-chip microcomputer etc.
Process chip is combined can be actuated for control to direct current generator, and simple structure is with low cost, uncomplicated.
Brief description of the drawings
Fig. 1 is a kind of startup localization method of direct-current brushless no-hall motor of the invention.
Fig. 2 is a kind of startup positioning circuit of direct-current brushless no-hall motor of the invention.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings so that it is of the invention a little with feature more
Easily it is readily appreciated by one skilled in the art, so as to make apparent defining to protection scope of the present invention.
Embodiment 1
A kind of startup localization method of direct-current brushless no-hall motor, specifically includes following steps：
S1：The comparison voltage of established standardses, comparison voltage is needed to be set according to the difference of different direct current generators, it is desirable to be
The voltage can not exceed the rotor minimum rotation voltage for rotating lower at an arbitrary position, that is, rotor will not be turned after ensureing to be powered
Under dynamic, the magnitude of voltage of setting is prevented because rotor rotates and shines into the damage of direct current generator in detection process.
S2：Timer is set with a processor, needs to be zeroed out timer clearing during measurement is started
After finishing, the coil sequence for setting conducting winding is UV, UW, VW, VU, WU, WV, is sequentially turned on,
S3：Winding current to the conducting in step S2 is sampled, and sample rate current is amplified, and measurement electricity is obtained after filtering
Pressure；
S4：Measurement voltage after treatment is compared with comparison voltage, when voltage is measured more than comparison voltage, is jumped to
S5；
S5：Timer stops, and preserves timer data and corresponding two around group information, judge whether not detect also two around
Group, jumps to S2 if having, and S6 is jumped to if nothing；
S6：Compare 6 groups of timer data information, from the time it is most long around group information as the winding nearest from magnetic field.
Overall workflow is, after the parameter for setting comparison voltage, it is necessary to when starting direct current generator, i.e., to timing
Device resets, and after clearing is finished, is then powered according to default hot-wire coil order, and now timer starts timing, same with this
When, conductive winding current steeply rises, and sample rate current constantly becomes big, that is, the sample rate current after processing constantly becomes big, works as measurement
When voltage is more than comparison voltage, that is, the signal of timer stopping is exported, and record the timing time of timer, with hot-wire coil phase
Matching.The test of next winding is carried out again.
After all windings complete to test, the timing time to recording is compared, from the winding conduct that the time is most long
That group nearest from magnetic field, by the rule in rotor magnetic field, can find optimal startup, conduction phase.Because firm
At conducting a moment, electric current is catastrophe, and this moment with AC characteristic, because of magnetoelectricity conversion effet, the presence of external magnetic field can be to electricity
The mutation of stream is incremented by and forms certain hindrance function, therefore its impedance can be more relatively large close to that group of coil in magnetic field, and electric current increases
Time president to rated value is a little.
Embodiment 2
Physical circuit part, after measurement is proceeded by, electric current input sample section obtains the electric current of energization winding, in the electric current
Noise can be filtered filtering by C10, then the regulation of multiple, C9 are amplified by the proportionate relationship between R22, R26 three
The noise signal of power supply is filtered, is supplied to amplifier one just putting bias after R80 and R20 partial pressures, correct amplifier bulk properties, it is ensured that
During input signal 0V, output end is also 0V voltages.The output end of operational amplifier U1 connects with the negative input end of operational amplifier U2
Connect, the positive input terminal input setting comparison voltage of operational amplifier U2, comparison voltage is mainly true by R4, R8, R14 triadic relation
Fixed, specific setting needs to be determined according to different direct current generator types.And C15 is then separated by direct communication, common-mode influence is reduced,
So that comparing more accurate.When U2 negative input end be less than positive input terminal voltage when, U2 output ends can output signal, when U2's
When negative input end is more than the voltage of positive input terminal, U2 output cut-offs produce interrupt signal, you can carry out stopping control with to timer
System.
After completing test, it is only necessary to the different winding of re-test, above testing procedure is repeated, you can complete test.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Mode, in the ken that those of ordinary skill in the art possess, can also be on the premise of present inventive concept not be departed from
Various changes can be made.
Claims (7)
1. the startup localization method of a kind of direct-current brushless no-hall motor, it is characterised in that comprise the following steps：
S1：Setting comparison voltage；
S2：Timer resets, two windings not detected of any conducting motor, and timer starts timing, now in conducting electric current
Rise；
S3：Winding current in step S2 is sampled and is processed and obtain measuring voltage；
S4：Measurement voltage after treatment is compared with comparison voltage, when voltage is measured more than comparison voltage, is jumped to
S5；
S5：Timer stops, and preserves timer data and corresponding two around group information, judge whether not detect also two around
Group, jumps to S2 if having, and S6 is jumped to if nothing；
S6：Compare 6 groups of timer data information, from the time it is most long around group information as the winding nearest from magnetic field.
2. the startup localization method of a kind of direct-current brushless no-hall motor according to claim 1, it is characterised in that also set
Surely there is overtime error reporting system, described overtime error reporting system is set with time limit parameter, counted when timer operation and exceed the time limit
Parameter, then stop position fixing process, sends operation irregularity warning.
3. the startup localization method of a kind of direct-current brushless no-hall motor according to claim 1, it is characterised in that described
The step of S3 in current processing in include and carry out signal amplification by operational amplifier.
4. the startup localization method of a kind of direct-current brushless no-hall motor according to claim 1, it is characterised in that described
The step of S4 in measurement voltage be compared using operational amplifier with the size manner of comparison of comparison voltage.
5. the startup positioning circuit of a kind of direct-current brushless no-hall motor, including signal amplification module and voltage comparison module, institute
The signal amplification module stated is connected with voltage comparison module, it is characterised in that described signal amplification module includes operation amplifier
Device U1, resistance R20, R22, R26, R80, described R20 one end are connected with current input terminal, and the other end is with operational amplifier U1's
Positive input terminal is connected, and described R22 one end is connected with current input terminal, and the other end connects with the negative input end of operational amplifier U1
Connect, described R80 one end is connected with a 5V direct voltage sources, and the other end is connected with the positive input terminal of operational amplifier, described
R26 one end be connected with the negative input end of operational amplifier, the other end is connected with amplifier output end；Described voltage comparison module
Including operational amplifier U2, resistance R4, R8, R14 and electric capacity C15, described resistance R4 one end connects with the 2nd 5V direct voltage sources
Connect, the positive input terminal connection of one end operational amplifier U2, described R14 one end ground connection, the other end is with operational amplifier U2 just
Input is connected, and described resistance R8 one end ground connection, the other end is connected described electric capacity with the negative input end of operational amplifier U2
The positive-negative input end of C15 two ends concatenation operation amplifier, the output end of described operational amplifier U1 is with operational amplifier U2's
Negative input end is connected.
6. the startup positioning circuit of a kind of direct-current brushless no-hall motor according to claim 5, it is characterised in that also wrap
The electric capacity C9 for being arranged on signal amplification module is included, electric capacity C9 one end ground connection, the other end is connected with a 5V voltage sources.
7. the startup positioning circuit of a kind of direct-current brushless no-hall motor according to claim 5, it is characterised in that also wrap
The electric capacity C10 for being arranged on signal amplification module is included, described electric capacity C10 one end is grounded, and the other end is with operational amplifier U1 just
Input is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611209157.0A CN106787999A (en) | 2016-12-23 | 2016-12-23 | The startup localization method and its circuit of a kind of direct-current brushless no-hall motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611209157.0A CN106787999A (en) | 2016-12-23 | 2016-12-23 | The startup localization method and its circuit of a kind of direct-current brushless no-hall motor |
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| CN106787999A true CN106787999A (en) | 2017-05-31 |
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| CN201611209157.0A Pending CN106787999A (en) | 2016-12-23 | 2016-12-23 | The startup localization method and its circuit of a kind of direct-current brushless no-hall motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000018A (en) * | 2017-12-25 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | A kind of valve positioner of the hall signal using brushless motor |
| CN109450305A (en) * | 2018-12-27 | 2019-03-08 | 峰岹科技（深圳）有限公司 | Ceiling-fan motor control method, device and ceiling fan based on noninductive FOC |
| CN109617491A (en) * | 2018-12-27 | 2019-04-12 | 峰岹科技（深圳）有限公司 | Electrombile control method, device and electric vehicle |
| CN110729921A (en) * | 2019-10-18 | 2020-01-24 | 峰岧科技(上海)有限公司 | Mower control method and device and mower |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000018A (en) * | 2017-12-25 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | A kind of valve positioner of the hall signal using brushless motor |
| CN109450305A (en) * | 2018-12-27 | 2019-03-08 | 峰岹科技（深圳）有限公司 | Ceiling-fan motor control method, device and ceiling fan based on noninductive FOC |
| CN109617491A (en) * | 2018-12-27 | 2019-04-12 | 峰岹科技（深圳）有限公司 | Electrombile control method, device and electric vehicle |
| CN109617491B (en) * | 2018-12-27 | 2021-03-23 | 峰岹科技(深圳)股份有限公司 | Electric vehicle control method and device and electric vehicle |
| CN109450305B (en) * | 2018-12-27 | 2021-12-10 | 峰岹科技(深圳)股份有限公司 | Ceiling fan motor control method and device based on non-inductive FOC and ceiling fan |
| CN110729921A (en) * | 2019-10-18 | 2020-01-24 | 峰岧科技(上海)有限公司 | Mower control method and device and mower |
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Application publication date: 20170531 |