CN108075699A - A kind of motor control method and electric machine controller - Google Patents
A kind of motor control method and electric machine controller Download PDFInfo
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- CN108075699A CN108075699A CN201711483739.2A CN201711483739A CN108075699A CN 108075699 A CN108075699 A CN 108075699A CN 201711483739 A CN201711483739 A CN 201711483739A CN 108075699 A CN108075699 A CN 108075699A
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- preset value
- supply voltage
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000005611 electricity Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005070 sampling Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
The invention discloses a kind of motor control method and electric machine controllers.The motor control method includes：The driving voltage preset value exported according to DC transfer circuit obtains supply voltage preset value；The voltage of power supply is sampled, obtains supply voltage information；According to the supply voltage information and the supply voltage preset value, voltage deviation is obtained；If the absolute value of the voltage deviation is more than voltage deviation threshold value, the driving voltage of the DC transfer circuit output is adjusted.The embodiment of the present invention solves the problems, such as the prior art there are sample circuit and control method be complicated, cost is higher, realizes simplified sample circuit and control method, reduces the effect of cost.
Description
Technical field
The present embodiments relate to automatic control technology fields more particularly to a kind of motor control method and motor to control
Device.
Background technology
Motor is in welding machine and the technical fields such as automatically controls and is widely applied.Wherein, the pass controlled motor
One of key technology is the accurate control to motor speed.In the prior art, in order to the accurate voltage of motor offer, it is necessary to right
The driving voltage for being input to motor side is sampled, so as to control the rotating speed of motor.However, sample the drive of motor side
Dynamic voltage also includes the voltage signals such as the counter electromotive force generated when motor rotates, it is necessary to handle the driving voltage, filters out
The influence of counter electromotive force.Therefore, there are the shortcomings that sample circuit and control method are complicated, cost is higher for the prior art.
The content of the invention
The present invention provides a kind of motor control method and electric machine controller, simplifies sample circuit and control method to realize,
Reduce the effect of cost.
In a first aspect, an embodiment of the present invention provides a kind of motor control method, which includes：
The driving voltage preset value exported according to DC transfer circuit obtains supply voltage preset value；
The voltage of power supply is sampled, obtains supply voltage information；
According to the supply voltage information and the supply voltage preset value, voltage deviation is obtained；
If the absolute value of the voltage deviation is more than voltage deviation threshold value, the driving of the DC transfer circuit output is adjusted
Voltage.
Optionally, the driving voltage exported according to the adjustment DC transfer circuit, further includes：
Adjust the duty cycle of the DC transfer circuit.
Optionally, the duty cycle of the adjustment DC transfer circuit includes：
If the absolute value of the voltage deviation is more than voltage deviation threshold value, and the voltage deviation is more than zero, described in reduction
Duty cycle；
If the absolute value of the voltage deviation is more than voltage deviation threshold value, and the voltage deviation is less than zero, described in increase
Duty cycle.
Optionally, the acquisition voltage deviation, further includes：The supply voltage information and the supply voltage preset value phase
Subtract.
Optionally, if the absolute value of the voltage deviation is less than or equal to voltage deviation threshold value, the DC transfer circuit
The driving voltage of output remains unchanged.
Optionally, the driving voltage preset value exported according to DC transfer circuit obtain supply voltage preset value it
Before, it further includes：
It detects that on-off circuit is connected, obtains and start information；
According to the startup information, the driving voltage preset value is obtained.
Second aspect, the embodiment of the present invention additionally provide a kind of electric machine controller, which includes：
DC transfer circuit, the output terminal of the DC transfer circuit are electrically connected with the input terminal of motor, are driven for exporting
Dynamic voltage；
Computing circuit, the input terminal input driving voltage preset value of the computing circuit, for according to the driving voltage
Preset value obtains supply voltage preset value；
Power supply；
Sample circuit, the input terminal of the sample circuit is electrically connected with the output terminal of the power supply, for described
The voltage of power supply is sampled, and obtains supply voltage information；
Comparison circuit, the first input end of the comparison circuit are electrically connected with the output terminal of the computing circuit, the ratio
The second input terminal compared with circuit is electrically connected with the output terminal of the sample circuit, for according to the supply voltage information and described
Supply voltage preset value obtains voltage deviation；
Control circuit, the first input end of the control circuit are electrically connected with the output terminal of the comparison circuit, the control
First output terminal of circuit processed is electrically connected with the control terminal of the DC transfer circuit, in the absolute value of the voltage deviation
During more than voltage deviation threshold value, the driving voltage of the DC transfer circuit output is adjusted.
Optionally, the DC transfer circuit includes：Buck circuit, the input terminal conduct of the buck circuit
The input terminal of the DC transfer circuit, the output of the output terminal of the buck circuit as the DC transfer circuit
End, the control terminal of the control terminal of the buck circuit as the DC transfer circuit；
The control circuit is additionally operable to adjust the duty cycle of the buck circuit.
Optionally, the comparison circuit includes：Subtracter, the first end of the subtracter and the first of the comparison circuit
Input terminal is electrically connected, and the second end of the subtracter is electrically connected with the second input terminal of the comparison circuit, for by the electricity
Source information of voltage and the supply voltage preset value subtract each other.
Optionally, the electric machine controller further includes：On-off circuit；
The output terminal of the on-off circuit is electrically connected with the second input terminal of the control circuit, for electric to the control
Road output starts information and according to the startup information, obtains the driving voltage preset value.
The present invention obtains supply voltage preset value by the driving voltage preset value exported according to DC transfer circuit；To supplying
The voltage of power supply is sampled, and obtains supply voltage information；It is preset according to the supply voltage information and the supply voltage
Value obtains voltage deviation；If the absolute value of the voltage deviation is more than voltage deviation threshold value, it is defeated to adjust the DC transfer circuit
The driving voltage gone out solves the problems, such as the prior art there are sample circuit and control method be complicated, cost is higher, realizes letter
Change sample circuit and control method, reduce the effect of cost.
Description of the drawings
Fig. 1 is a kind of flow chart for motor control method that the embodiment of the present invention one provides；
Fig. 2 is a kind of flow chart of motor control method provided by Embodiment 2 of the present invention；
Fig. 3 is a kind of flow chart for motor control method that the embodiment of the present invention three provides；
Fig. 4 is a kind of structure diagram for electric machine controller that the embodiment of the present invention four provides；
Fig. 5 is a kind of structure diagram for electric machine controller that the embodiment of the present invention five provides.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrated only in description, attached drawing.
Embodiment one
Fig. 1 is a kind of flow chart for motor control method that the embodiment of the present invention one provides, and the present embodiment is applicable to directly
The rotating speed control of galvanic electricity machine.This method can also be performed by computer program to perform by hardware circuit.This method has
Body includes the following steps：
Step S110, the driving voltage preset value exported according to DC transfer circuit obtains supply voltage preset value.
Wherein, driving voltage preset value is determined by the default operational factor of motor, for same motor, motor
Operating parameter and the driving voltage of motor be one-to-one relation.If for example, the operating parameter of motor be rotating speed, motor
When driving voltage is 10V, the rotating speed of corresponding motor is 200r/min.Also, the driving voltage of motor is bigger, the rotating speed of motor
It is bigger.
DC transfer circuit includes chopper circuit, and chopper circuit is by changing pulse width by the fixed direct current of amplitude
Buckling changes the translation circuit of the variable DC voltage of amplitude size into.For example, supply voltage can be 24V, DC transfer circuit
The supply voltage of 24V can be down to 10V.In the present embodiment, supply voltage is transformed to motor operation by DC transfer circuit
Required driving voltage.So, the transformation relation between the driving voltage preset value and supply voltage preset value is become by direct current
The type and topological structure for changing circuit determine.
Supply voltage preset value provides the preset value of voltage for power supply.Power supply provides electric energy for motor operation.
Step S120, the voltage of power supply is sampled, obtains supply voltage information.
Wherein, supply voltage information refers to the information of the supply voltage size exported by sampling the power supply obtained.
Step S130, according to supply voltage information and supply voltage preset value, voltage deviation is obtained.
Thus the voltage deviation obtained can characterize, the deviation of the driving voltage after DC transfer circuit converts, and then
Whether the driving voltage that characterization motor actually obtains disclosure satisfy that the requirement of motor operation.
Step S140, if the absolute value of voltage deviation is more than voltage deviation threshold value, the drive of adjustment DC transfer circuit output
Dynamic voltage.
Wherein, the absolute value of voltage deviation shows that more greatly the actual operation parameters in motor operation course are joined with default operation
Several deviations is bigger.In order to control the even running of motor, when the absolute value of the voltage deviation is more than voltage deviation threshold value, need
The driving voltage of motor is adjusted, the driving voltage for making motor is equal with voltage preset value.Specifically, of the invention real
It applies in example, by the driving voltage for being controlled by adjust output to DC transfer circuit.It is for example, initial when supply voltage
Be worth for 24V when, DC transfer circuit output driving voltage be 10V.When supply voltage decline, when being down to 23V by 24V, sampling
The supply voltage information that circuit sampling obtains is 23V, then, it is possible thereby to determine that the driving voltage of DC transfer circuit output will
Can correspondingly it reduce.The present embodiment can make the driving voltage of output remain 10V by adjusting DC transfer circuit, so that
Motor speed is stablized.
The technical solution of the present embodiment, by the operational process of motor, sampling, obtaining to the voltage of power supply
Supply voltage information is taken, the driving voltage information then exported according to the supply voltage acquisition of information DC transfer circuit solves
There are the shortcomings that sample circuit and control method are complicated, cost is higher for the prior art.In electric machine controller, supply voltage phase
It is metastable for driving voltage.The technical solution of the present embodiment is actually that supply voltage is sampled, and
Without being sampled to the driving voltage of motor, because without regard to counter electromotive force of motor to sampling the shadow of obtained driving voltage
It rings.In this way, on the one hand sample circuit is simplified without being sampled to parameters such as the electric currents of motor；On the other hand, in controlling party
In method, without the size for calculating the counter electromotive force that motor generates, control method is simplified.To sum up, the technical side of the present embodiment
Case has reached simplified sample circuit and control method, reduces the effect of cost.
Optionally, which can be zero, i.e. as long as the supply voltage of motor and supply voltage preset value are not
It is equal, just DC transfer circuit is adjusted.For example, supply voltage preset value is 24V, at this point, voltage deviation is zero, show
The driving voltage of DC transfer circuit output is 10V, and motor speed is stablized, without being adjusted to DC transfer circuit.If voltage
Deviation is -1V, i.e. supply voltage is 23V, shows that supply voltage is less than 24V at this time, in order to ensure the stabilization of speed of motor, then should
The driving voltage of adjustment DC transfer circuit output.
With continued reference to Fig. 1, optionally, step S130 is further included：Step S131, supply voltage information and supply voltage are preset
Value is subtracted each other, and obtains voltage deviation.It is poor by the way that supply voltage information and supply voltage preset value are made, it can intuitively draw power supply
The deviation size of the voltage of power supply output.
In above-mentioned each technical solution, supply voltage information can also be sampled voltage information, supply voltage preset value
It can be a reference value of sample circuit.For example, supply voltage preset value is set as 2V (i.e. a reference value of sample circuit is 2V), it is right
The supply voltage answered is 24V.If supply voltage information is 2V, at this point, voltage deviation is zero, show that power supply is stablized, i.e., it is electric
Machine stabilization of speed, without being adjusted to DC transfer circuit.If supply voltage information is 1.85V, i.e., voltage deviation is -0.15V,
Show that supply voltage is less than 24V at this time, then should adjust DC transfer circuit, so as to which motor speed be kept to stablize.
Embodiment two
Fig. 2 is a kind of flow chart of motor control method provided by Embodiment 2 of the present invention.On the basis of above-described embodiment
On, specifically, step S140 is further included：Step S141, the duty cycle information for adjusting DC transfer circuit obtains driving voltage letter
Breath.
DC transfer circuit can be made of controllable power electronic devices.Power electronic devices is also known as power semiconductor
Device is mainly used for the transformation of electrical energy of power equipment and the powerful electronic device of control circuit aspect.Power electronic devices
Type has half control type device (for example, thyristor), wholly-controled device (for example, gate level turn-off thyristor, power transistor, electricity
Field of force effect transistor, igbt) and uncontrollable device (for example, Power Diode Pumped).If the DC converting is electric
It route half control type device or wholly-controled device is formed, which may be employed the drive of pulse width modulation mode control output
The size of dynamic voltage can specifically control the duty cycle of DC transfer circuit.Thus, it is possible to pass through supply voltage information and control
The size of the Duty ratio control driving voltage of the DC transfer circuit.
The technical solution of the present embodiment, by the operational process of motor, sampling, obtaining to the voltage of power supply
Supply voltage information is taken, the duty cycle of DC transfer circuit is then controlled according to voltage deviation, so as to control DC transfer circuit
The driving voltage of output solves the disadvantage that the prior art there are sample circuit and control method be complicated, cost is higher, reaches
Sample circuit and control method are simplified, reduces the effect of cost.
Specifically, adjusting the driving voltage of DC transfer circuit output includes：If the absolute value of voltage deviation is more than voltage
Deviation threshold, and voltage deviation is more than zero, reduces duty cycle information；If the absolute value of voltage deviation is more than voltage deviation threshold value,
And voltage deviation is less than zero, increases duty cycle information.When voltage deviation is more than zero, the duty cycle for reducing DC transfer circuit can
To reduce the driving voltage of its output, the size and voltage preset value for making driving voltage reach unanimity.Similarly, when voltage deviation is small
When zero, the driving voltage of its output can be increased by increasing the duty cycle of DC transfer circuit, make the size and electricity of driving voltage
Pressure preset value reaches unanimity.For example, supply voltage is 24V, the preset rotation speed of motor is 200r/min, and DC transfer circuit corresponds to
Duty cycle be 45%.When supply voltage reduces by 10%, supply voltage is reduced to 21.6V, and voltage deviation is -2.4V.It keeps
The preset rotation speed of motor by the duty cycle of DC transfer circuit, it is necessary to be increased to 50% (45%/90%=50%), so that driving
Dynamic voltage keeps 10V, and motor speed is stablized.
Embodiment three
Fig. 3 is a kind of flow chart for motor control method that the embodiment of the present invention three provides.Referring to Fig. 3, in above-mentioned each reality
On the basis of applying example, further include after step s 130：
Step S142, if the absolute value of voltage deviation is less than or equal to voltage deviation threshold value, DC transfer circuit output
Driving voltage remains unchanged.
Wherein, step S142 and step S140 is two steps arranged side by side, true according to the size of the absolute value of voltage deviation
Surely step S142 or step S140 is performed.When the absolute value of voltage deviation is less than or equal to voltage deviation threshold value, without right
The operating parameter of motor is adjusted.Because without being adjusted to DC transfer circuit, keeping the current operating conditions of motor.
Optionally, voltage deviation threshold value is arranged to zero.So, when voltage deviation is zero, without adjusting DC transfer circuit output
Driving voltage, motor keep current operating conditions.When voltage deviation is not zero, the driving electricity of adjustment DC transfer circuit output
Pressure, runs motor stabilizing.
The technical solution of the present embodiment, by the operational process of motor, sampling, obtaining to the voltage of power supply
Supply voltage information is taken, then adjusting the direct current according to the voltage deviation of the supply voltage information and supply voltage preset value becomes
The driving voltage of circuit output is changed, solves the disadvantage that the prior art there are sample circuit and control method be complicated, cost is higher,
Reach and simplified sample circuit and control method, reduced the effect of cost.
It is pre- in step S110, the driving voltage exported according to DC transfer circuit on the basis of above-mentioned each technical solution
Before if value obtains supply voltage preset value, further include：
Step S100, detect that on-off circuit is connected, obtain and start information.
Wherein, which can be the preset rotation speed of motor operation.After on-off circuit is connected, power supply electricity can be controlled
Source powers to DC transfer circuit, and driving motor operation is so provided with the clean boot beneficial to motor.
Step S101, according to information is started, driving voltage preset value is obtained.
When the startup information is the preset rotation speed of motor operation, since the rotating speed of motor and the driving voltage of motor are one
Therefore one-to-one correspondence, driving voltage preset value can be determined by preset rotation speed information, accurate control is provided for subsequent step
Information processed.
Example IV
Fig. 4 is a kind of structure diagram for electric machine controller that the embodiment of the present invention four provides, and the present embodiment can perform
State the motor control method that each embodiment is provided.The electric machine controller includes：DC transfer circuit 230, computing circuit 240,
Power supply 210, sample circuit 220, comparison circuit 250 and control circuit 260.
The output terminal 232 of DC transfer circuit 230 is electrically connected with the input terminal of motor 270, for outputting drive voltage；Fortune
The input terminal 241 for calculating circuit 240 is electrically connected with the second output terminal 264 of control circuit 260, is preset for inputting driving voltage
It is worth and supply voltage preset value is obtained according to driving voltage preset value；Power supply 210；The input terminal of sample circuit 220
221 are electrically connected with the output terminal 212 of power supply 210, are sampled for the voltage to power supply 210, obtain power supply electricity
Press information；The first input end 251 of comparison circuit 250 is electrically connected with the output terminal 242 of computing circuit 240, comparison circuit 250
Second input terminal 253 is electrically connected with the output terminal 222 of sample circuit 220, for pre- according to supply voltage information and supply voltage
If value obtains voltage deviation；The first input end 261 of control circuit 260 is electrically connected with the output terminal 252 of comparison circuit 250, control
First output terminal 262 of circuit 260 processed is electrically connected with the control terminal 233 of DC transfer circuit 230, in the exhausted of voltage deviation
When being more than voltage deviation threshold value to value, the driving voltage of the adjustment output of DC transfer circuit 230.
The technical solution of the present embodiment inputs driving voltage preset value by the input terminal 241 for setting computing circuit 240,
For obtaining supply voltage preset value according to driving voltage preset value；The input terminal 221 of sample circuit 220 and power supply 210
Output terminal 212 be electrically connected, sampled for the voltage to power supply 210, obtain supply voltage information；Comparison circuit
250 first input end 251 is electrically connected with the output terminal 242 of computing circuit 240, the second input terminal 253 of comparison circuit 250 with
The output terminal 222 of sample circuit 220 is electrically connected, for according to driving voltage supply voltage information and supply voltage preset value, obtaining
Voltage deviation is taken, solving the disadvantage that the prior art, there are sample circuit and control method complexity, cost are higher.The present embodiment
Technical solution is actually that sample circuit samples supply voltage, is sampled without the driving voltage to motor 270,
The influence for the driving voltage that cause obtains sampling without regard to 270 counter electromotive force of motor.In this way, on the one hand without to motor
The parameters such as 270 electric current are sampled, and simplify sample circuit；On the other hand, in control method, without calculating motor
The size of 270 counter electromotive force generated, simplifies control method.To sum up, the technical solution of the present embodiment has reached simplified sampling
Circuit and control method reduce the effect of cost.
With continued reference to Fig. 4, on the basis of above-mentioned each technical solution, the comparison circuit 250 of the electric machine controller can wrap
It includes：Subtracter, the first end of subtracter are electrically connected with the first input end 251 of comparison circuit 250, the second end of subtracter with than
The second input terminal 253 compared with circuit 250 is electrically connected, for supply voltage information and supply voltage preset value to be subtracted each other.
On the basis of above-mentioned each technical solution, which includes：Buck circuit, buck chopper
Input terminal 231 of the input terminal of circuit as DC transfer circuit 230, the output terminal of buck circuit is as DC converting electricity
The output terminal 232 on road 230, the control terminal 233 of the control terminal of buck circuit as DC transfer circuit 230；Control circuit
260 are additionally operable to the duty cycle information of adjustment buck circuit.
Wherein, buck circuit refers to that the average value of output voltage is less than the value of input voltage, that is, the driving electricity exported
The value of pressure is less than the value of supply voltage.
Embodiment five
Fig. 5 is a kind of structure diagram for electric machine controller that the embodiment of the present invention five provides, and the present embodiment can perform
State the motor control method that one~embodiment of embodiment three is provided.On the basis of example IV, which also wraps
It includes：On-off circuit 280；The output terminal 282 of the on-off circuit 280 is electrically connected with the second input terminal 263 of control circuit 260, is used
Start information and according to the startup information in being exported to control circuit 260, obtain the driving voltage preset value.
The technical solution of the present embodiment, by setting computing circuit 240, the input driving of input terminal 241 of computing circuit 240
Voltage preset value, for obtaining supply voltage preset value according to driving voltage preset value；The input terminal 221 of sample circuit 220 with
The output terminal 212 of power supply 210 is electrically connected, and is sampled for the voltage to power supply 210, obtains supply voltage letter
Breath；The first input end 251 of comparison circuit 250 is electrically connected with the output terminal 242 of computing circuit 240, and the second of comparison circuit 250
Input terminal 253 is electrically connected the first preset value of input with the output terminal 212 of sample circuit 220, for according to driving voltage power supply electricity
Press information and supply voltage preset value, obtain voltage deviation, solve the prior art there are sample circuit and control method it is complicated,
The shortcomings that cost is higher.The technical solution of the present embodiment is actually that sample circuit samples supply voltage, without right
The driving voltage of motor 270 is sampled, because of the shadow of driving voltage obtained without regard to 270 counter electromotive force of motor to sampling
It rings.In this way, on the one hand sample circuit is simplified without being sampled to parameters such as the electric currents of motor 270；On the other hand, controlling
In method processed, without the size for calculating the counter electromotive force that motor 270 generates, control method is simplified.To sum up, the present embodiment
Technical solution has reached simplified sample circuit and control method, reduces the effect of cost.In addition, after on-off circuit is connected, it can be with
Power supply is controlled to power to DC transfer circuit, driving motor operation is so provided with the clean boot beneficial to motor.
Note that it above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various apparent variations,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
It can include other more equivalent embodiments, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of motor control method, which is characterized in that including：
The driving voltage preset value exported according to DC transfer circuit obtains supply voltage preset value；
The voltage of power supply is sampled, obtains supply voltage information；
According to the supply voltage information and the supply voltage preset value, voltage deviation is obtained；
If the absolute value of the voltage deviation is more than voltage deviation threshold value, the driving electricity of the DC transfer circuit output is adjusted
Pressure.
2. the according to the method described in claim 1, it is characterized in that, driving electricity of the adjustment DC transfer circuit output
Pressure, further includes：
Adjust the duty cycle of the DC transfer circuit.
3. the according to the method described in claim 2, it is characterized in that, duty cycle bag of the adjustment DC transfer circuit
It includes：
If the absolute value of the voltage deviation is more than voltage deviation threshold value, and the voltage deviation is more than zero, reduces the duty
Than；
If the absolute value of the voltage deviation is more than voltage deviation threshold value, and the voltage deviation is less than zero, increases the duty
Than.
4. according to the method described in claim 1, it is characterized in that, the acquisition voltage deviation, further includes：The supply voltage
Information and the supply voltage preset value subtract each other.
5. if according to the method described in claim 1, it is characterized in that, the absolute value of the voltage deviation is less than or equal to voltage
Deviation threshold, the driving voltage of the DC transfer circuit output remain unchanged.
6. according to the method described in claim 1, it is characterized in that, in the driving voltage exported according to DC transfer circuit
Before preset value obtains supply voltage preset value, further include：
It detects that on-off circuit is connected, obtains and start information；
According to the startup information, the driving voltage preset value is obtained.
7. a kind of electric machine controller, which is characterized in that including：
DC transfer circuit, the output terminal of the DC transfer circuit are electrically connected with the input terminal of motor, for output driving electricity
Pressure；
Computing circuit, the input terminal input driving voltage preset value of the computing circuit, for being preset according to the driving voltage
Value obtains supply voltage preset value；
Power supply；
Sample circuit, the input terminal of the sample circuit are electrically connected with the output terminal of the power supply, for the power supply
The voltage of power supply is sampled, and obtains supply voltage information；
Comparison circuit, the first input end of the comparison circuit are electrically connected with the output terminal of the computing circuit, and the comparison is electric
Second input terminal on road is electrically connected with the output terminal of the sample circuit, for according to the supply voltage information and the power supply
Voltage preset value obtains voltage deviation；
Control circuit, the first input end of the control circuit are electrically connected with the output terminal of the comparison circuit, the control electricity
First output terminal on road is electrically connected with the control terminal of the DC transfer circuit, for being more than in the absolute value of the voltage deviation
During voltage deviation threshold value, the driving voltage of the DC transfer circuit output is adjusted.
8. electric machine controller according to claim 7, which is characterized in that the DC transfer circuit includes：Buck chopper
Circuit, the input terminal of the input terminal of the buck circuit as the DC transfer circuit, the buck circuit
Output terminal of the output terminal as the DC transfer circuit, the control terminal of the buck circuit is as DC converting electricity
The control terminal on road；
The control circuit is additionally operable to adjust the duty cycle of the buck circuit.
9. electric machine controller according to claim 7, which is characterized in that the comparison circuit includes：Subtracter, it is described to subtract
The first end of musical instruments used in a Buddhist or Taoist mass is electrically connected with the first input end of the comparison circuit, the second end of the subtracter and the comparison circuit
The second input terminal electrical connection, for the supply voltage information and the supply voltage preset value to be subtracted each other.
10. electric machine controller according to claim 7, which is characterized in that further include：On-off circuit；
The output terminal of the on-off circuit is electrically connected to the control circuit, and starts information for being exported to the control circuit,
And according to the startup information, obtain the driving voltage preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483739.2A CN108075699B (en) | 2017-12-29 | 2017-12-29 | Motor control method and motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483739.2A CN108075699B (en) | 2017-12-29 | 2017-12-29 | Motor control method and motor controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108075699A true CN108075699A (en) | 2018-05-25 |
| CN108075699B CN108075699B (en) | 2024-02-20 |
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| CN201711483739.2A Active CN108075699B (en) | 2017-12-29 | 2017-12-29 | Motor control method and motor controller |
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| CN108075699B (en) | 2024-02-20 |
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