CN1988363B - Motor control system and its switch device - Google Patents
Motor control system and its switch device Download PDFInfo
- Publication number
- CN1988363B CN1988363B CN2005100229505A CN200510022950A CN1988363B CN 1988363 B CN1988363 B CN 1988363B CN 2005100229505 A CN2005100229505 A CN 2005100229505A CN 200510022950 A CN200510022950 A CN 200510022950A CN 1988363 B CN1988363 B CN 1988363B
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- motor
- control system
- electrically connected
- driver
- switch
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Abstract
This invention provides a control system of a motor connected to a motor electrically, said control system and the motor receive an exterior supply, and the control system is composed of a driver and a switch device, in which, said driver is connected with the motor electrically, said switch device is serial between the exterior supply and the driver and receives an exterior control signal to control the switch, when it is turned on, said driver can initiate said motor to operate according to the exterior supply.
Description
Technical field
The present invention relates to a kind of control system and switching device thereof, particularly a kind of control system of motor and switching device thereof.
Background technology
See also Fig. 1, existing control system 2 is to be electrically connected at a motor 1, and it is can receive and foundation one external power source V
INTo control the running of this motor 1.This control system 2 mainly is by a driver 10, a switch module S, a filtering capacitor C
S, one first diode D
1And one second diode D
2Form; Wherein, this switch module S is electrically connected at this external power source V
IN, this first diode D
1Be electrically connected between this switch module S and this motor 1 this second diode D
2Be electrically connected at this switch module S, this driver 10 is electrically connected at this second diode D
2And between this motor 1, this filtering capacitor C
SAn end be to be electrically connected at this first diode D
1And between this motor 1, the other end then is connected to a ground end.When switch module S conducting, this external power source V
INBe can be via this first diode D
1And this second diode D
2And be sent to this filtering capacitor C respectively
SAnd this driver 10, and this filtering capacitor C
SWhen the full charging lotus, be to provide a starting current being supplied to this motor 1, and this driver 10 is by external power source V
INStartup, and produce a drive signal to this motor, to start this motor 1 running, wherein this drive signal can be a pulse width modulating signal (Pulse Width Modulation; PWM).
When above-mentioned control system 2 starts running at this motor 1 of control, the generation of following phenomenon is arranged often:
If this switch module S then can be because of this filtering capacitor C in off position down with it conducting
SAt issuable burst current of energising moment, and form this motor 1 and this filtering capacitor C
SDestruction, so should avoid; In addition, therefore this switch module S selects the difficult cost of saving for use in specification because must bear bigger electric current process, also is a disappearance significantly.
Summary of the invention
Because above-mentioned problem, the object of the invention is to provide a kind of needn't consider that filtering capacitor discharges and recharges the disappearance that transition has burst current to produce, and control system and the switching device thereof that can save the motor of switch module and overall system control cost.
Therefore, for reaching above-mentioned purpose, the present invention is the control system that discloses a kind of motor, and this control system is to be electrically connected at a motor, and this control system and this motor receive an external power source; Wherein, This control system is made up of a driver and a switching device; This driver is to be electrically connected at this motor, and this switching device is electrically to be connected in series between this external power source and this driver, and this switching device can receive an outside control signal to control unlatching or to cut out; This switching device is when opening, and this driver can be according to this external power source to start this motor running.
For reaching above-mentioned purpose, the present invention provides a kind of switching device, and it is a driver that is electrically connected in order to controlling and driving one motor, and this switching device and this motor receive an external power source; Wherein, This switching device is made up of one first switching circuit and a second switch circuit, and this first switching circuit is to be electrically connected between this external power source and this driver, and this second switch circuit; Be to be electrically connected at this first switching circuit; And this second switch circuit receives an outside control signal with the unlatching of controlling this first switching circuit or close, and when this first switching circuit was opened, this driver was this motor of controlling and driving.
As stated; Because of control system and switching device thereof according to a kind of motor of the present invention; But be this switching device of mat with the unlatching of controlling this driver or close, and the running of further controlling this motor whether, and because this motor is for continuing to receive the state of this external power source; Therefore its filtering capacitor needn't consider to discharge and recharge the disappearance that transition produces; And omitted must bear the switch module of big electric current after, under the situation that produces in a large number, the present invention also is a splendid cost-effective enforcement.
For letting above and other objects of the present invention, characteristic and the advantage can be more obviously understandable, hereinafter is special lifts a preferred embodiment, and conjunction with figs., elaborates as follows.
Description of drawings
Fig. 1 is the composition sketch map of the control system of existing motor.
Fig. 2 is the composition sketch map () of the control system of motor of the present invention.
Fig. 3 is the composition sketch map (two) of the control system of motor of the present invention.
Fig. 4 is the enforcement circuit diagram of the control system of motor of the present invention.
The reference numeral explanation
1 motor, 2 control system
3 control system
10 drivers, 20 switching devices
21 first switching circuits, 211 voltage dividers
22 second switch circuit, 221 adjusters
V
INExternal power source S switch
C
SFiltering capacitor D
3The 3rd diode
C
1The first capacitor D
4The 4th diode
D
1The first diode R
1First resistor
D
2The second diode R
2Second resistor
R
3The 3rd resistor R
4The 4th resistor
Q
1The first switch module B base stage
The E emitter-base bandgap grading C collection utmost point
Q
2Second switch assembly G grid
S source electrode D drain electrode
Embodiment
Consulting Fig. 2 and Fig. 3, is the composition sketch map that discloses the control system of motor of the present invention.Wherein, this control system 3 is to be electrically connected at a motor 1, and this control system 3 all receives an external power source V with this motor 1
INIn this example, this motor 1 is to be embodied as a direct current brushless motor, and this external power source V
INBe to can be a power supply unit.
Shown in Fig. 2, this control system 3 mainly is made up of a driver 10 and 20 of switching devices, and wherein, this driver 10 is electrically connected at this motor 1, and this switching device 20 is electrically to be connected in series in this external power source V
INAnd between this driver 10.
In the middle of present embodiment; This driver 10 can be a single-chip assembly; Or can be an integrated circuit package, and this driver 10 is that an exportable drive signal is to drive this motor 1 running, wherein; This drive signal can be a high-low level signal, can be embodied as a pulse width modulating signal (PulseWidth Modulation at this especially; PWM).
In the middle of present embodiment, this switching device 20 can receive an outside control signal and open or cut out with control, and this control signal is to be embodied as a high-low level signal, particularly is embodied as a pulse width modulating signal (PWM); When control signal made this switching device 20 open, this driver 10 can be according to this external power source V
INTurn round to start this motor 1, otherwise when making this switching device 20 close as if this control signal, this driver 10 is because of no external power source V
INInput, and can't produce this drive signal to drive 1 running of this motor.
This mandatory declaration be, at the D of this first diode shown in Fig. 2
1And this filtering capacitor C
S, itself and this motor 1 and this external power source V
INAnnexation and Fig. 1 in identical, so do not give unnecessary details in addition, so in the present embodiment, this second diode D
2Be that an end is electrically connected at this external power source V
INWith this first diode D
1Between, the other end then is electrically connected at this switching device 20.
Please consult shown in Figure 3ly again, this switching device 20 is made up of one first switching circuit 21 and 22 in a second switch circuit, and wherein, this first switching circuit 21 is electrically to be connected in series in this second diode D
2And between this driver 10; And this second switch circuit 22 is to be electrically connected between this first switching circuit 21 and the ground end; And this second switch circuit 22 is to receive this control signal; And in this second switch circuit 22 when opening, this first switching circuit 21 is also for opening, and makes this external power source V
INBe able to get into this driver 10, otherwise if this second switch circuit 22 is when closing, this first switching circuit 21 is also for cutting out, and makes this driver 10 can't receive this external power source V
IN
Please consult shown in Figure 4ly again, be the enforcement circuit diagram of the control system of motor of the present invention.This first switching circuit 21 shown in the figure mainly is by one first switch module Q
1And 211 compositions of a voltage divider, and this second switch circuit 22 mainly is by a second switch assembly Q
2And 221 compositions of an adjuster.
This first switch module Q
1Be to be electrically connected at this second diode D
2And between this driver 10, and this voltage divider 211 is to receive this control signal to control this first switch module Q
1Open or close.
In the middle of present embodiment, this first switch module Q
1Be to be a PNP transistor, and this voltage divider 211 is by one first resistor R
1One second resistor R of connecting
2Form, wherein, this first switch module Q
1A collection utmost point C be electrically connected on this driver 10, and this first switch module Q
1An emitter-base bandgap grading E and this first resistor R
1, be to be electrically connected at this second diode D simultaneously
2, this first switch module Q
1A base stage B, then be electrically connected at this first resistor R
1With this second resistor R
2Between, trigger this first switch module Q by dividing potential drop
1This base stage B, can make this first switch module Q
1Open.
This second switch assembly Q
2Be to electrically connect this second resistor R
2And between this adjuster 221, and this adjuster 221 is to receive this control signal to control this second switch assembly Q
2Open or close.
In the middle of present embodiment, this second switch assembly Q
2Be to be a nmos pass transistor, and this adjuster 221 is by one the 3rd resistor R
3With one first capacitor C
1Form; Wherein, this second switch assembly Q
2A drain D be to be electrically connected at this second resistor R
2, and this second switch assembly Q
2One source pole S be electrically connected at this ground end, the 3rd resistor R
3With this first capacitor C
1An end be to be electrically connected at this second switch assembly Q simultaneously
2A grid G, the other end then is electrically connected at this second switch assembly Q simultaneously
2This source S.
It should be noted that by adjustment the 3rd resistor R at this
3Resistance value and this first capacitor C
1Capacitance, be to produce a rated value, when control signal rises or drops to this rated value, this second switch assembly Q
2Be closed, and related this first switch module Q that makes
1Be closed, this driver 10 can't receive this external power source V
IN, and make this motor 1 shut down; For instance; This control signal is a pulse width modulating signal (PWM); The user can be made as responsibility cycle=20% (anti-phase input then be 80%) with this rated value, as the responsibility cycle of control signal greater than 20% time (the anti-phase input then is less than 80%), this second switch assembly Q
2Open, as the responsibility cycle of this control signal less than 20% time (anti-phase input then is greater than 80%), this second switch assembly Q
2Close.
In the middle of Fig. 4, be to know that this second switch circuit more includes one the 3rd diode D
3, one the 4th diode D
4And one the 4th resistor R
4, the 3rd diode D wherein
3An end be to be electrically connected at this second switch assembly Q
2This grid G, the other end then is electrically connected at this second switch assembly Q
2This source S; The 4th diode D
4Be in order to receiving this control signal, and the 4th resistor R
4Be to be electrically connected at this adjuster 221 and the 4th diode D
4Between, the 4th diode D
4Be available in case non-return to electric current, and the 4th resistor R
4Be can be in order to as current limliting.
In sum; Because of control system and the switching device thereof according to a kind of motor of the present invention, this switching device is can be according to this control signal to determine whether this external power source is sent to this driver, when this control signal makes this switching device for unlatching; This external power source can be sent into this driver to drive this motor running; And making this switching device when closing when this control signal, this external power source can't be fed through this driver, and can't drive this motor running; It should be noted that; Because reaching, this motor should be connected with this external power source all the time by startup electric capacity; Therefore do not have generation, and the present invention has omitted this and must bear the existing switch module of big electric current process, more effectively cost-effective expenditure as alleged burst current in the prior art; On producing, having more its effect, in fact is a splendid designer.
The above is merely exemplary, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the accompanying claim its equivalent modifications of carrying out or change.
Claims (18)
1. the control system of a motor, this control system is to be electrically connected at a motor, and this control system and this motor receive an external power source, and this control system comprises:
One driver is electrically connected at this motor; And
One switching device is electrically connected between this external power source and this driver, and this switching device receives an outside control signal and open or cut out with control, this switching device when opening, this driver be according to this external power source starting this motor running,
Wherein, This switching device is made up of one first switching circuit and a second switch circuit; This first switching circuit is to be electrically connected between this external power source and this driver; And this second switch circuit is to be electrically connected at this first switching circuit, and this second switch circuit is to receive this control signal to open or close to control this first switching circuit
Wherein, This second switch circuit is made up of a second switch assembly and an adjuster; This second switch assembly is to be electrically connected at this first switching circuit; And this adjuster is to be electrically connected at this second switch assembly, and it can receive this control signal with the unlatching of controlling this second switch assembly or close.
2. the control system of motor as claimed in claim 1, wherein, this driver is to be a single-chip assembly or an integrated circuit package.
3. the control system of motor as claimed in claim 1, wherein, this driver is the rotating speed with this this motor of control signal control.
4. the control system of motor as claimed in claim 3, wherein, this control signal is a high-low level signal.
5. the control system of motor as claimed in claim 3, wherein, this control signal is a pulse width modulating signal.
6. the control system of motor as claimed in claim 1 wherein, is to be provided with one first diode between this external power source and this motor.
7. the control system of motor as claimed in claim 1 wherein, is to be provided with one second diode between this external power source and this driver.
8. the control system of motor as claimed in claim 1; Wherein, This first switching circuit is made up of one first switch module and a voltage divider; This first switch module is provided in a side of between this external power source and this driver, and this voltage divider is to receive this external power source to open or close to control this first switch module.
9. the control system of motor as claimed in claim 8, wherein, this first switch module is to be a PNP transistor.
10. the control system of motor as claimed in claim 9; Wherein, This voltage divider is made up of one first resistor and one second resistor; And a base stage of this first switch module is to be electrically connected between this first resistor and this second resistor, and an emitter-base bandgap grading of this first switch module is to be electrically connected at this external power source, and the one of which collection utmost point is to be electrically connected at this driver.
11. the control system of motor as claimed in claim 1, wherein, this second switch assembly is to be a nmos pass transistor.
12. the control system of motor as claimed in claim 11; Wherein, One drain electrode of this second switch assembly is to be electrically connected at this first switching circuit, and the one of which grid is an end that is electrically connected at this adjuster, and its one source pole then is electrically connected at the other end and a ground end of this adjuster simultaneously.
13. the control system of motor as claimed in claim 12; Wherein, This second switch circuit more comprises one the 3rd diode, and one of which first end is this grid that is electrically connected at this second switch assembly, and one of which second end is this source electrode that is electrically connected at this second switch assembly.
14. the control system of motor as claimed in claim 1; Wherein, This second switch circuit more includes one the 4th diode and one the 4th resistor, and the 4th diode is in order to receiving this control signal, and the 4th resistor is to be electrically connected between this adjuster and the 4th diode.
15. the control system of motor as claimed in claim 1, wherein, this adjuster is when this control signal descends or rises to a rated value, makes this motor shut down.
16. the control system of motor as claimed in claim 15, wherein, this adjuster is to be composed in parallel by one the 3rd resistor and one first capacitor.
17. like the control system of claim 1 or 15 described motors, wherein, this control signal is to be a high-low level signal.
18. the control system of motor as claimed in claim 17, wherein,
This high-low level signal is a pulse width modulating signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100229505A CN1988363B (en) | 2005-12-19 | 2005-12-19 | Motor control system and its switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100229505A CN1988363B (en) | 2005-12-19 | 2005-12-19 | Motor control system and its switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1988363A CN1988363A (en) | 2007-06-27 |
| CN1988363B true CN1988363B (en) | 2012-01-11 |
Family
ID=38185022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100229505A Active CN1988363B (en) | 2005-12-19 | 2005-12-19 | Motor control system and its switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1988363B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973176B (en) * | 2007-11-16 | 2017-06-30 | 台达电子工业股份有限公司 | Motor apparatus and motor control speed system |
| CN102582740A (en) * | 2012-03-15 | 2012-07-18 | 浙江工业大学 | Portable electric scooter |
| CN103973201B (en) * | 2013-01-25 | 2016-05-25 | 立锜科技股份有限公司 | Tool is shared motor controller and the corresponding control methods of pin position |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673545A (en) * | 2004-03-23 | 2005-09-28 | 台达电子工业股份有限公司 | Method for stopping fan immediately after power-off and structure thereof |
-
2005
- 2005-12-19 CN CN2005100229505A patent/CN1988363B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673545A (en) * | 2004-03-23 | 2005-09-28 | 台达电子工业股份有限公司 | Method for stopping fan immediately after power-off and structure thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2002-27682A 2002.01.25 |
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| Publication number | Publication date |
|---|---|
| CN1988363A (en) | 2007-06-27 |
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