CN205864307U - Motor speed regulation circuit and wall-breaking machine - Google Patents
Motor speed regulation circuit and wall-breaking machine Download PDFInfo
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- CN205864307U CN205864307U CN201620722996.1U CN201620722996U CN205864307U CN 205864307 U CN205864307 U CN 205864307U CN 201620722996 U CN201620722996 U CN 201620722996U CN 205864307 U CN205864307 U CN 205864307U
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Abstract
The utility model discloses a kind of motor speed regulation circuit and wall-breaking machine, wherein this motor speed regulation circuit includes controller, Rotating speed measring circuit, current regulating circuit and motor；One end of the rotating shaft of motor is provided with fan leaf, and a blade of fan leaf is provided with magnetics, and magnetics is arranged on fan leaf the one end away from rotating shaft；Wherein, Rotating speed measring circuit includes that Hall element, Hall element are disposed in proximity to magnetics position；Hall element is sampled and transformed into pulse signal to motor speed；Controller, according to the size of current of pulse signal regulation external power source output to motor.Technical solutions of the utility model improve the stability of motor speed, and improve the mixing effect of wall-breaking machine.
Description
Technical field
This utility model relates to technical field of electric appliances, particularly to a kind of motor speed regulation circuit and wall-breaking machine.
Background technology
Wall-breaking machine includes bowl cover, jar and base, and base is provided with motor, is provided with stirring blade in jar, will stirring
Cup is positioned on base, after covering bowl cover energising, is rotated by driven by motor stirring blade, beats food.
The general rotating speed of motor of wall-breaking machine is close to up to 30000 revs/min, and the effect beating food is fine, but works as food
Time more, may result in the problem that motor speed declines, actually can be reduced to about 20000 revs/min.That is, food is many
I haven't seen you for ages directly influences rotating speed, causes motor speed unstable, thus affects the mixing effect of wall-breaking machine.
Utility model content
Main purpose of the present utility model is to provide a kind of motor speed regulation circuit, it is intended to improve stablizing of motor speed
Property, improve the mixing effect of wall-breaking machine.
For achieving the above object, the utility model proposes a kind of motor speed regulation circuit, this motor speed regulation electricity
Road includes controller, Rotating speed measring circuit, current regulating circuit and motor；One end of the rotating shaft of described motor is provided with fan leaf,
Being provided with magnetics on one blade of fan leaf, described magnetics is arranged on fan leaf the one end away from described rotating shaft；
Wherein,
Described Rotating speed measring circuit includes that Hall element, described Hall element are fixedly installed near described magnetic unit
Part position；Described Hall element is sampled and transformed into pulse signal to motor speed；Described controller, believes according to pulse
The output of number regulation external power source is to the size of current of motor.
Preferably, when described fan leaf rotates, described magnetics rotates with；Described magnetics close to described suddenly
Being detected during your sensor, Hall element sensing obtains the first level；At described magnetics away from described hall sensing
Being not detected at during device, Hall element sensing obtains second electrical level.
Preferably, described motor speed regulation circuit also includes current detection circuit；Described current detection circuit is to input
Electric current to described motor carries out being sampled and transformed into current sampling signal, and described controller is adjusted according to described current sampling signal
The size of current of joint external power source output extremely described motor.
Preferably, described controller arrives according to described Rotating speed measring electric circuit inspection motor speed and described current detecting are electric
The meansigma methods of the motor speed that road detects exports the size of current to motor to control external power source.
Preferably, the input of described current regulating circuit is connected with described external power source, described current regulating circuit
Outfan is connected with the first test side of described current detection circuit, the second test side of described current detection circuit and described electricity
First end of machine connects, and the second end of described motor is also connected with described external power source；The outfan of described current detection circuit
Being connected with the first feedback end of described controller, described Hall element is connected with the second feedback end of described controller, described
The drive end of controller also controlled end with described current regulating circuit is connected.
Preferably, described current regulating circuit include the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the one or three
Pole pipe and controllable silicon；Wherein,
Described silicon controlled anode is connected with described external power source, described silicon controlled negative electrode and described current detection circuit
The first test side connect, described silicon controlled control pole through described first resistance and described first audion colelctor electrode even
Connect；First end of described second resistance is connected with described silicon controlled anode, and the second end of described second resistance is controlled with described
The control pole of silicon connects；The grounded emitter of described first audion, the base stage of described first audion is through described 3rd resistance
It is connected with the drive end of described controller；First end of described 4th resistance is connected with the emitter stage of described first audion, institute
The base stage of the second end and described first audion of stating the 4th resistance is connected.
Preferably, described current regulating circuit also includes the 5th resistance and the first electric capacity, the first end of described 5th resistance
Being connected with described silicon controlled anode, the second end of described 5th resistance is connected with the first end of described first electric capacity, and described
Second end of one electric capacity is connected with described silicon controlled negative electrode.
Preferably, described current detection circuit includes the first diode, the second diode, the 3rd diode, the four or two pole
Pipe, the 6th resistance, the 7th resistance and current transformer；Wherein,
First end of described current transformer primary side is connected with the outfan of described current regulating circuit, and described electric current is mutual
Second end of sensor primary side is connected with the first end of described motor, the first end of described Current Transformer Secondary side and described the
The anode of one diode connects, and the second end of described Current Transformer Secondary side is connected with the negative electrode of described second diode；Institute
First end of the negative electrode and described 6th resistance of stating the first diode is connected；The plus earth of described second diode；Described
The anode of three diodes is connected with the anode of described second diode, the negative electrode of described 3rd diode and described first diode
Negative electrode connect；The anode of described 4th diode is connected with the negative electrode of described second diode, the moon of described 4th diode
Pole is connected with the negative electrode of described first diode；Second end of described 6th resistance connects with the first feedback end of described controller
Connecing, the second end of described 6th resistance is connected with the first end of described 7th resistance, the second end ground connection of described 7th resistance.
Preferably, described current detection circuit also includes the 8th resistance, the second electric capacity, the 3rd electric capacity and the 4th electric capacity；Institute
The negative electrode of the first end and described first diode of stating the second electric capacity is connected, the second end of described second electric capacity and the described 2nd 2
The anode of pole pipe connects；First end of described 8th resistance is connected with the first end of described second electric capacity, described 8th resistance
Second end is connected with the second end of described second electric capacity；First end of described 3rd electric capacity connects with the first end of described 7th resistance
Connecing, the second end of described 3rd electric capacity is connected with the second end of described 7th resistance；Described 4th electric capacity is parallel to the described 3rd
Between first end and second end of described 3rd electric capacity of electric capacity.
This utility model also proposes a kind of wall-breaking machine, and described wall-breaking machine includes motor speed regulation electricity also as described above
Road, this motor speed regulation circuit includes controller, Rotating speed measring circuit, current regulating circuit and motor；Turning of described motor
One end of axle is provided with fan leaf, and a blade of fan leaf is provided with magnetics；Described Rotating speed measring circuit includes that Hall passes
Sensor, described Hall element is fixedly installed near described magnetics position, and described magnetics is arranged on fan leaf
One end away from described rotating shaft；Described Hall element is sampled and transformed into pulse signal to motor speed；Described control
Device, according to the size of current of pulse signal regulation external power source output to motor.
Technical solutions of the utility model, by arranging controller, Rotating speed measring circuit, current regulating circuit and motor, are formed
A kind of motor speed regulation circuit.Magnetics is set by the fan leaf at motor, solid near the position of magnetics
Surely Hall element it is provided with, when fan leaf rotates, magnetics also concomitant rotation, feel between magnetics and Hall element
A series of pulse signal should be formed.Described controller is according to the electric current of this pulse signal regulation input to motor, thus reaches to adjust
Joint motor speed purpose, defines a kind of motor speed feedback regulation so that motor stabilizing rotates.Technical solutions of the utility model
Improve the stability of motor speed, improve the mixing effect of wall-breaking machine.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to the structure shown in these accompanying drawings.
Fig. 1 is the functional block diagram of this utility model motor speed regulation circuit one embodiment；
Fig. 2 is the electrical block diagram of this utility model motor speed regulation circuit one embodiment；
Fig. 3 is the structural representation of this utility model wall-breaking machine one embodiment.
Drawing reference numeral illustrates:
| Label | Title | Label | Title |
| 100 | Controller | Q1 | First audion |
| 200 | Rotating speed measring circuit | D1 | First diode |
| 300 | Current regulating circuit | D2 | Second diode |
| 400 | Motor | D3 | 3rd diode |
| 500 | Current detection circuit | D4 | 4th diode |
| 10 | Rotating shaft | SCR | Controllable silicon |
| 20 | Fan leaf | BT | Current transformer |
| 30 | Magnetics | R1 | First resistance |
| 40 | Hall element | R2 | Second resistance |
| 50 | Bowl cover | R3 | 3rd resistance |
| 60 | Jar | R4 | 4th resistance |
| 70 | Base | R5 | 5th resistance |
| 80 | Pcb board | R6 | 6th resistance |
| C1 | First electric capacity | R7 | 7th resistance |
| C2 | Second electric capacity | R8 | 8th resistance |
| C3 | 3rd electric capacity | R9 | 9th resistance |
| C4 | 4th electric capacity | R10 | Tenth resistance |
| C5 | 5th electric capacity | Rs | Current-limiting resistance |
| VCC1 | First power supply |
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model rather than all
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, broadly falls into the scope of this utility model protection.
It is to be appreciated that directional instruction (such as up, down, left, right, before and after ...) in this utility model embodiment
It is only used for explanation relative position relation under a certain particular pose (as shown in drawings) between each parts, motion conditions etc., as
When really this particular pose changes, then directionality instruction changes the most therewith.
It addition, the description relating to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that
For indicating or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can express or implicitly include at least one this feature.It addition, the technical side between each embodiment
Case can be combined with each other, but must be based on those of ordinary skill in the art are capable of, when the combination of technical scheme
Occur conflicting will be understood that the combination of this technical scheme does not exists, the most not in this utility model requirement when maybe cannot realize
Protection domain within.
The utility model proposes a kind of motor speed regulation circuit.
With reference to Fig. 1 and Fig. 3, this motor speed regulation circuit includes that controller 100, Rotating speed measring circuit 200, electric current regulate
Circuit 300 and motor 400；One end of the rotating shaft 10 of described motor 400 is provided with fan leaf 20, and a blade of fan leaf 20 is arranged
Be magnetic element 30, and described magnetics 30 is arranged on fan leaf 20 one end away from described rotating shaft 10.
Described Rotating speed measring circuit 200 includes that Hall element 40, described Hall element are fixed 40 and be disposed in proximity to institute
State magnetics 30 position；Described Hall element 40 is sampled and transformed into pulse signal to the rotating speed of motor 400；Described
Controller 100, according to the size of current of pulse signal regulation external power source output to motor 400.This magnetic unit in the present embodiment
Part 30 is Magnet；Controller 100 uses control chip to realize, such as single-chip microcomputer etc..
It should be noted that one end of usual machine shaft 10 is arranged with fan leaf 20, dispel the heat for motor.
In the present embodiment, a blade of fan leaf 20 is provided with Magnet, is positioned at below motor 400 and is fixed with Hall element 40.
When fan leaf 20 rotates, when Magnet is above Hall element 40, Hall element 40 detects Magnet；When Magnet away from
During Hall element 40, Hall element 40 can't detect Magnet, thus Hall element 40 according to Magnet closer or far from
And output pulse signal, by the high level lasting time in certain period that controller 100 obtains pulse signal, it is calculated
The rotating speed of motor 400.When motor 400 rotating speed is less than preset rotation speed, controller 100 output regulation signal to described electric current regulates
Circuit 300, increases and inputs the electric current to motor 400, heighten motor 400 rotating speed；When motor 400 rotating speed is higher than preset rotation speed,
It is similar to, reduces the rotating speed of motor 400, so that motor 400 stabilization of speed rotates in preset rotation speed.
Technical solutions of the utility model by arrange controller 100, Rotating speed measring circuit 200, current regulating circuit 300 and
Motor 400, defines a kind of motor speed regulation circuit.Magnetics 30 is set by the fan leaf 20 at motor 400, is leaning on
The position of nearly magnetics 30 is fixed with Hall element 40, when fan leaf 20 rotates, and magnetics 30 also concomitant rotation,
Between magnetics 30 and Hall element 40, sensing forms a series of pulse signals.Described controller 100 is believed according to this pulse
Number regulation input is to the electric current of motor 400, thus reaches to regulate motor 400 rotating speed purpose, defines a kind of motor 400 rotating speed anti-
Feedback regulation so that motor 400 stable rotation.Technical solutions of the utility model improve the stability of motor 400 rotating speed, improve broken
The mixing effect of wall machine.
Specifically, when described fan leaf 20 rotates, described magnetics 30 rotates with；Close at described magnetics 30
Being detected during described Hall element 40, Hall element 40 sensing obtains the first level；Described magnetics 30 away from
Being not detected at during described Hall element 40, Hall element 40 sensing obtains second electrical level.In the present embodiment, use output
The Hall element of rectangular pulse signal.
During it should be noted that Hall element 40 detects magnetics 30, Hall element 40 induces correspondence
Electromotive force, the low and high level signal that converted rear output is corresponding.
Further, described motor 400 rotational speed regulation circuit also includes current detection circuit 500；Described current detecting electricity
Road 500 is sampled and transformed into current sampling signal, described controller 100 basis to the electric current of input to described motor 400
The size of current of described current sampling signal regulation external power source output extremely described motor 400.
It can be readily appreciated that the electric current of input to motor 400 is detected by crossing detector circuit, just available electricity
The rotating speed of machine 400.
For improving the degree of regulation of motor 400 rotating speed, in the present embodiment, described controller 100 is according to described Rotating speed measring
Outside the meansigma methods of motor speed that circuit 200 detects and the motor speed that described current detection circuit 500 detects controls
Portion's power supply exports the size of current to motor 400.Such as, it is 26000 revs/min by pulse signal detection to motor 400 rotating speed
Clock, detects that by current detection circuit 500 rotating speed of motor 400 is 26050 revs/min.The most now controller 100 is by meter
Calculate, take 26025 revs/min of rotating speeds as motor 400 of both meansigma methodss, input to motor 400 further according to this rotational speed regulation
Size of current.
Specifically, the input of described current regulating circuit 300 is connected with described external power source, described current regulating circuit
The outfan of 300 is connected with the first test side of described current detection circuit 500, the second inspection of described current detection circuit 500
Surveying end to be connected with the first end of described motor 400, the second end of described motor 400 is also connected with described external power source；Described electricity
The outfan of current detection circuit 500 is connected with the first feedback end FB1 of described controller 100, described Hall element 40 and institute
State controller 100 second feedback end FB2 connect, the drive end of described controller 100 also with described current regulating circuit 300
Controlled end connects.
Specifically, described current regulating circuit 300 includes the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th electricity
Resistance R4, the first audion Q1 and controllable silicon SCR；Wherein,
The anode of described controllable silicon SCR is connected with described external power source, and the negative electrode of described controllable silicon SCR is examined with described electric current
First test side of slowdown monitoring circuit 500 connects, and the control pole of described controllable silicon SCR is through described first resistance R1 and described one or three pole
The colelctor electrode of pipe Q1 connects；Described first end of the second resistance R2 is connected with the anode of described controllable silicon SCR, described second resistance
Second end of R2 is connected with the control pole of described controllable silicon SCR；The grounded emitter of described first audion Q1, the described 1st
The base stage of pole pipe Q1 is connected with the drive end DRI of described controller 100 through described 3rd resistance R3；The of described 4th resistance R4
One end is connected with the emitter stage of described first audion Q1, and second end of described 4th resistance R4 is with described first audion Q1's
Base stage connects.
The angle of flow that described controller 100 controls controllable silicon SCR by the first audion Q1 realizes regulation input to electricity
The size of machine 400 electric current.
Further, described current regulating circuit 300 also includes the 5th resistance R5 and the first electric capacity C1, described 5th resistance
First end of R5 is connected with the anode of described controllable silicon SCR, and second end of described 5th resistance R5 is with described first electric capacity C1's
First end connects, and described second end of the first electric capacity C1 is connected with the negative electrode of described controllable silicon SCR.
5th resistance R5 and the first electric capacity C1 constitutes buffer circuit, prevents the sudden change between controllable silicon SCR anode and negative electrode
Voltage breakdown controllable silicon SCR.
Specifically, described current detection circuit 500 include the first diode D1, the second diode D2, the 3rd diode D3,
4th diode D4, the 6th resistance R6, the 7th resistance R7 and current transformer BT1；Wherein,
First end of described current transformer BT primary side is connected with the outfan of described current regulating circuit 300, described
Second end of current transformer BT primary side is connected with the first end of described motor 400, described current transformer BT secondary side
First end is connected with the anode of described first diode D1, second end and the described 2nd 2 of described current transformer BT secondary side
The negative electrode of pole pipe D2 connects；The negative electrode of described first diode D1 is connected with first end of described 6th resistance R6；Described second
The plus earth of diode D2；The anode of described 3rd diode D3 is connected with the anode of described second diode D2, and described
The negative electrode of three diode D3 is connected with the anode of described first diode D1；The anode and described second of described 4th diode D4
The negative electrode of diode D2 connects, and the negative electrode of described 4th diode D4 is connected with the negative electrode of described first diode D1；Described
Second end of six resistance R6 is connected with the first feedback end FB1 of described controller 100, second end of described 6th resistance R6 also with
First end of described 7th resistance R7 connects, the second end ground connection of described 7th resistance R7.
The electric current of input to motor 400 is sampled by current transformer BT by electromagnetic induction principle.First diode
D1, the second diode D2, the 3rd diode D3, the 4th diode D4 constitute rectification circuit, carry out whole to the current signal of sampling
Stream.6th resistance R6 and the 7th resistance R7 constitutes bleeder circuit, the current signal after rectification is converted into voltage signal, then feeds back
To controller 100.
Further, described current detection circuit 500 also include the 8th resistance R8, the second electric capacity C2, the 3rd electric capacity C3 and
4th electric capacity C4；First end of described second electric capacity C2 is connected with the negative electrode of described first diode D1, described second electric capacity C2
The second end be connected with the anode of described second diode D2；First end of described 8th resistance R8 is with described second electric capacity C2's
First end connects, and second end of described 8th resistance R8 is connected with second end of described second electric capacity C2；Described 3rd electric capacity C3
The first end be connected with first end of described 7th resistance R7, second end of described 3rd electric capacity C3 and described 7th resistance R7's
Second end connects；Described 4th electric capacity C4 is parallel to the first end and second end of described 3rd electric capacity C3 of described 3rd electric capacity C3
Between.
8th resistance R8, the second electric capacity C2, the 3rd electric capacity C3 and the 4th electric capacity C4 constitute filter circuit, further to electric current
Signal is filtered, to improve capacity of resisting disturbance.
Additionally, motor 400 rotational speed regulation circuit also includes the first power supply VCC1, current-limiting resistance Rs and the tenth resistance R10, suddenly
You are connected with described first power supply VCC1 through current-limiting resistance Rs by the power end of sensor 40；The ground connection termination of Hall element 40
Ground；The outfan of Hall element 40 is connected with the second feedback end FB2 of described controller 100 through the tenth resistance R10, the first electricity
Source VCC1 is connected with the outfan of Hall element 40 through the 9th resistance R9.
In the present embodiment, the components and parts such as controller, resistance, electric capacity, diode are all welded on pcb board 80, account for reduce
Use space.
This utility model also proposes a kind of wall-breaking machine, and this wall-breaking machine includes that motor speed regulates circuit, and this motor speed is adjusted
The concrete structure on economize on electricity road is with reference to above-described embodiment, owing to this wall-breaking machine have employed whole technical sides of above-mentioned all embodiments
Case, the most at least has all beneficial effects that the technical scheme of above-described embodiment is brought, and this is no longer going to repeat them.
This wall-breaking machine includes that bowl cover 50, jar 60 and base 70, motor 400, Hall element 40, pcb board 80 are all provided with
It is placed in base, is provided with stirring blade (sign) in jar 60, jar 60 is positioned on base 70, cover bowl cover 50 and be energized
After, drive stirring blade to rotate by motor 400, food is beaten.
The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model,
Every under inventive concept of the present utility model, the equivalent structure utilizing this utility model description and accompanying drawing content to be made becomes
Change, or directly/be indirectly used in other relevant technical fields and be included in scope of patent protection of the present utility model.
Claims (10)
1. motor speed regulation circuit, it is characterised in that include controller, Rotating speed measring circuit, current regulating circuit and
Motor；One end of the rotating shaft of described motor is provided with fan leaf, and a blade of fan leaf is provided with magnetics, described magnetic unit
Part is arranged on fan leaf the one end away from described rotating shaft；Wherein,
Described Rotating speed measring circuit includes that Hall element, described Hall element are fixedly installed near described magnetics
Position；Described Hall element is sampled and transformed into pulse signal to the rotating speed of motor；Described controller, believes according to pulse
The output of number regulation external power source is to the size of current of motor.
2. motor speed regulation circuit as claimed in claim 1, it is characterised in that when described fan leaf rotates, described magnetic
Element rotates with；Being detected when described magnetics is close to described Hall element, Hall element sensing obtains the
One level；Being not detected at when described magnetics is away from described Hall element, Hall element sensing obtains the second electricity
Flat.
3. motor speed regulation circuit as claimed in claim 1, it is characterised in that described motor speed regulation circuit also includes
Current detection circuit；Described current detection circuit is sampled and transformed into current sample letter to the electric current of input to described motor
Number, described controller regulates the size of current of described external power source output extremely described motor according to described current sampling signal.
4. motor speed regulation circuit as claimed in claim 3, it is characterised in that described controller is according to described Rotating speed measring
Electric circuit inspection to motor speed and the meansigma methods of motor speed that detects of described current detection circuit to control external power source
Export the size of current to motor.
5. motor speed regulation circuit as claimed in claim 4, it is characterised in that the input of described current regulating circuit with
Described external power source connects, and the outfan of described current regulating circuit is connected with the first test side of described current detection circuit,
Second test side of described current detection circuit is connected with the first end of described motor, the second end of described motor also with described outside
Portion's power supply connects；The outfan of described current detection circuit is connected with the first feedback end of described controller, described hall sensing
Device is connected with the second feedback end of described controller, the drive end of described controller also with the controlled end of described current regulating circuit
Connect.
6. motor speed regulation circuit as claimed in claim 1, it is characterised in that described current regulating circuit includes the first electricity
Resistance, the second resistance, the 3rd resistance, the 4th resistance, the first audion and controllable silicon；Wherein,
Described silicon controlled anode is connected with described external power source, the of described silicon controlled negative electrode and described current detection circuit
One test side connects, and described silicon controlled controls pole and is connected through the colelctor electrode of described first resistance with described first audion；Institute
The first end stating the second resistance is connected with described silicon controlled anode, the second end of described second resistance and described silicon controlled control
Pole processed connects；The grounded emitter of described first audion, the base stage of described first audion through described 3rd resistance with described
The drive end of controller connects；First end of described 4th resistance is connected with the emitter stage of described first audion, and the described 4th
Second end of resistance is connected with the base stage of described first audion.
7. motor speed regulation circuit as claimed in claim 6, it is characterised in that described current regulating circuit also includes the 5th
Resistance and the first electric capacity, the first end of described 5th resistance is connected with described silicon controlled anode, the second of described 5th resistance
End is connected with the first end of described first electric capacity, and the second end of described first electric capacity is connected with described silicon controlled negative electrode.
8. motor speed regulation circuit as claimed in claim 1, it is characterised in that described current detection circuit includes the one or two
Pole pipe, the second diode, the 3rd diode, the 4th diode, the 6th resistance, the 7th resistance and current transformer；Wherein,
First end of described current transformer primary side is connected with the outfan of described current regulating circuit, described current transformer
Second end of primary side is connected with the first end of described motor, the first end of described Current Transformer Secondary side and the described 1st
The anode of pole pipe connects, and the second end of described Current Transformer Secondary side is connected with the negative electrode of described second diode；Described
The negative electrode of one diode is connected with the first end of described 6th resistance；The plus earth of described second diode；Described 3rd 2
The anode of pole pipe is connected with the anode of described second diode, the negative electrode of described 3rd diode and the moon of described first diode
Pole connects；The anode of described 4th diode is connected with the negative electrode of described second diode, the negative electrode of described 4th diode with
The negative electrode of described first diode connects；Described second end of the 6th resistance is connected with the first feedback end of described controller, institute
First end of the second end and described 7th resistance of stating the 6th resistance is connected, the second end ground connection of described 7th resistance.
9. motor speed regulation circuit as claimed in claim 8, it is characterised in that described current detection circuit also includes the 8th
Resistance, the second electric capacity, the 3rd electric capacity and the 4th electric capacity；First end of described second electric capacity connects with the negative electrode of described first diode
Connecing, the second end of described second electric capacity is connected with the anode of described second diode；First end of described 8th resistance is with described
First end of the second electric capacity connects, and the second end of described 8th resistance is connected with the second end of described second electric capacity；Described 3rd
First end of electric capacity is connected with the first end of described 7th resistance, the of the second end of described 3rd electric capacity and described 7th resistance
Two ends connect；Described 4th electric capacity is parallel between the first end and second end of described 3rd electric capacity of described 3rd electric capacity.
10. a wall-breaking machine, it is characterised in that described wall-breaking machine includes also motor as described in claim 1-9 any one
Rotational speed regulation circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722996.1U CN205864307U (en) | 2016-07-08 | 2016-07-08 | Motor speed regulation circuit and wall-breaking machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620722996.1U CN205864307U (en) | 2016-07-08 | 2016-07-08 | Motor speed regulation circuit and wall-breaking machine |
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| CN201620722996.1U Expired - Fee Related CN205864307U (en) | 2016-07-08 | 2016-07-08 | Motor speed regulation circuit and wall-breaking machine |
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| CN108988581A (en) * | 2018-08-15 | 2018-12-11 | 广东顺德华焱电子科技有限公司 | Motor turnning circle detection device, method and reinforcing-bar binding machine |
| WO2019024227A1 (en) * | 2017-08-04 | 2019-02-07 | 广东美的生活电器制造有限公司 | Food processor, and constant speed control method and device therefor |
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2016
- 2016-07-08 CN CN201620722996.1U patent/CN205864307U/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107592042A (en) * | 2016-07-08 | 2018-01-16 | 广东美的生活电器制造有限公司 | Motor speed adjusts circuit and wall-breaking machine |
| CN107592042B (en) * | 2016-07-08 | 2024-04-26 | 广东美的生活电器制造有限公司 | Motor rotation speed regulating circuit and wall breaking machine |
| CN108497952A (en) * | 2017-02-23 | 2018-09-07 | 广东美的生活电器制造有限公司 | Food cooking machine and its anti-blocking rotary device, method |
| WO2019024227A1 (en) * | 2017-08-04 | 2019-02-07 | 广东美的生活电器制造有限公司 | Food processor, and constant speed control method and device therefor |
| CN108988581A (en) * | 2018-08-15 | 2018-12-11 | 广东顺德华焱电子科技有限公司 | Motor turnning circle detection device, method and reinforcing-bar binding machine |
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