CN101873095B - Motor control device and controller thereof - Google Patents
Motor control device and controller thereof Download PDFInfo
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- CN101873095B CN101873095B CN200910137715A CN200910137715A CN101873095B CN 101873095 B CN101873095 B CN 101873095B CN 200910137715 A CN200910137715 A CN 200910137715A CN 200910137715 A CN200910137715 A CN 200910137715A CN 101873095 B CN101873095 B CN 101873095B
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Abstract
The invention provides a motor control device which is electrically connected to a motor. The motor control device mainly comprises a controller and a driving circuit, wherein the controller has a preset time and is used for generating a first driving signal and a second driving signal and outputting; the driving circuit comprises a first switch component and a second switch component; the first switch component and the second switch component respectively receive the first driving signal and the second driving signal and start up or close in turn according to the first driving signal and the second driving signal to drive the motor to operate; the controller closes the first switch component before the preset time that the second driving signal breaks over the second switch component, and closes the second switch component before the preset time that the first driving signal breaks over the first switch component.
Description
Technical field
Two groups of switch modules conductings simultaneously that the present invention is switched about a kind of phase place of avoiding controlling motor and the controller for motor and the controller thereof that cause the situation of motor internal circuit damage parts to take place.
Background technology
Please refer to shown in Figure 1ly, it discloses a kind of existing controller for motor, and this controller for motor mainly is made up of Hall subassembly 11, drive circuit 12 (for example being full bridge driving circuit).Magnetic pole phase when wherein this Hall subassembly 11 is in order to the sensing motor operation is switched to obtain the phase place sensing signal; And produce four switches (SW1-SW4) (for example be transistor) of two groups of drive signals (S1, S2) to export to drive circuit 12 respectively according to the phase place sensing signal; Wherein drive signal S1 is exported to switch (SW1) and switch (SW4); Drive signal (S2) then is exported to switch (SW2) and switch (SW3); In order to do taking turns to open or off switch (SW1, SW4) or switch (SW2, SW4) to control respectively, and make the sense of current that the coil 20 of motor flows through alternately through two groups of drive signals (S1, S2), and the CD-ROM drive motor operation;
Cooperate shown in Figure 2; The above-mentioned mode of passing through two groups of drive signals (S1, S2) control motor operation; Though therefore motor can reach the purpose of continuous service; Yet these two groups of drive signals (S1, S2) (in ON (conducting) → OFF (closing) or the OFF → ON), also might cause two groups of drive signals (S1, S2) conducting (ON) four switches (SW1-SW4) simultaneously, make the electric current (I) of power supply to flow to earth terminal or to flow to earth terminal from switch (SW2), switch (SW4) from switch (SW1), switch (SW3) at state exchange; And because the coil 20 (load) through motor does not cause the resistance value reduction that electric current (I) passes through; Therefore, under the condition that resistance value fixing in power source voltage (Vcc) and that electric current (I) passes through descends, will make electric current (I) through switch (SW1, SW3) or switch (SW2, SW4) become very big (V (voltage)=I (electric current) * R (resistance)); And cause burning of switch (SW1-SW4) and damage, and cause the generation of motor abnormality.
Summary of the invention
Therefore, for addressing the above problem, the purpose of this invention is to provide a kind of controller for motor, it is electrically connected motor.This controller for motor mainly comprises controller and drive circuit.This controller has Preset Time, and in order to produce the output of first drive signal and second drive signal; This drive circuit comprises first switch module and second switch assembly; This first switch module and second switch assembly receive first drive signal and second drive signal respectively; And open in turn or close according to first drive signal and second drive signal, move with CD-ROM drive motor; Its middle controller is before the Preset Time of the second drive signal conducting second switch assembly; Break off first switch module ahead of time; And before the Preset Time of the first drive signal conducting, first switch module, break off the second switch assembly ahead of time, and then this first switch module and this second switch assembly can not opened simultaneously; Make source current can pass through the coil (load) of this motor smoothly, and be unlikely to burn out those switch modules.
Another object of the present invention is to provide a kind of controller; Electrically connect the drive circuit of controller for motor, drive circuit electrically connects motor again, and its middle controller comprises sensing cell and signaling control unit; Magnetic pole phase during this sensing cell sensing motor operation is switched to produce the phase place sensing signal and to export signaling control unit to; And this signaling control unit receives this phase place sensing signal, and produces this first drive signal and first switch module and the second switch assembly of this second drive signal to export drive circuit respectively to according to this phase place sensing signal, with first switch module and the second switch assembly of opening or closing drive circuit in turn; And make the sense of current that the coil of motor flows through alternately; With the CD-ROM drive motor operation, in view of the above, be designed with phase place sensing cell (for example being the Hall sensing component) in the controller of the present invention; And also only use two output pins just can reach the effect of control Driver Circuit, thereby can simplify the complexity of circuit and reduce cost.
For letting above and other objects of the present invention, characteristic and the advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and conjunction with figs., elaborates as follows.
Description of drawings
Fig. 1 is the circuit diagram of existing controller for motor.
Fig. 2 is the waveform sketch map of drive signal of the controller for motor of Fig. 1.
Fig. 3 is the circuit block diagram according to the controller for motor of first embodiment of the invention.
Fig. 4 is the circuit diagram according to the controller for motor of first embodiment of the invention.
Fig. 5 is another circuit diagram according to the controller for motor of first embodiment of the invention.
Fig. 6 is the waveform sketch map according to first drive signal and second drive signal of the controller for motor of first embodiment of the invention.
Fig. 7 is the circuit block diagram according to the controller for motor of second embodiment of the invention.
Process chart when unusual for taking place according to the controller for motor of second embodiment of the invention at motor in Fig. 8.
Fig. 9 is according to the phase place sensing signal (Sp) of the controller for motor of second embodiment of the invention and the waveform sketch map of abnormal signal (RD).
[primary clustering symbol description]
11 Hall subassemblies
12 drive circuits
20 coils
3 controller for motor
31 rectification circuits
32 reduction voltage circuits
33 controllers
331 sensing cells
332 signaling control units
333 abnormality detection unit
34 drive circuits
4 power supplys
5 motors
6 systems
The S801-S803 step
Embodiment
Please with reference to Fig. 3 and Fig. 4, the controller for motor 3 of first embodiment of the invention electrically connects interchange (AC) power supply 4 and motor 5 respectively, mainly comprises rectification circuit 31, reduction voltage circuit 32, controller 33 and drive circuit 34.
Wherein the electrical connection of the assembly in the drive circuit 34 is: upward the 3rd switch module (Q3) of bridge, the collector electrode (C) of the 4th switch module (Q4) are electrically connected at the two ends of the coil (L) of motor 5 respectively; The emitter (E) of the 3rd switch module (Q3), the 4th switch module (Q4) is electrically connected at the output of rectification circuit 31 respectively; The base stage (B) of the 3rd switch module (Q3) is electrically connected at second end of electric capacity (C2), second end of resistance (R2) and first end of resistance (R3); First end of first end of electric capacity (C2) and resistance (R2) then electrically connects the output of rectification circuit 31; Second end of resistance (R3) then electrically connects the anode of diode (D1), and the negative electrode of diode (D1) then electrically connects the collector electrode (C) of the 4th switch module (Q4); The base stage (B) of the 4th switch module (Q4) is electrically connected at second end of electric capacity (C3), second end of resistance (R4) and first end of resistance (R5); First end of first end of electric capacity (C3) and resistance (R4) then electrically connects the output of rectification circuit 31; Second end of resistance (R5) then electrically connects the anode of diode (D2), and the negative electrode of diode (D2) then electrically connects the collector electrode (C) of the 3rd switch module (Q3); The negative electrode of diode (D3) and diode (D4) is electrically connected at the output of rectification circuit 31 respectively, and the anode of diode (D3) and diode (D4) then is electrically connected at the two ends of coil (L) respectively.
First switch module (Q1) of following bridge, the drain electrode (D) of second switch assembly (Q2) be electrically connected at respectively motor 5 coil (L) two ends and electrically connect the 3rd switch module (Q3) of bridge on this, the collector electrode (C) of the 4th switch module (Q4) respectively; The grid (G) of first switch module (Q1), second switch assembly (Q2) is electrically connected at first pin and second pin of controller 33 (drive IC) respectively, and the source electrode (S) of first switch module (Q1), second switch assembly (Q2) is electrically connected at earth terminal.
As shown in Figure 5; This drive circuit 34 can for example be a half-bridge circuit also; It comprises first switch module (Q1), second switch assembly (Q2) at least; These switch modules are electrically connected between the coil (L1, L2) and controller 33 of motor 5, wherein first switch module (Q1), second switch assembly (Q2) can for mos field effect transistor (Metal-Oxide-Semiconductor Field-EffectTransistor, MOSFET).Wherein the electrical connection of the assembly in the drive circuit 34 is: the drain electrode (D) of first switch module (Q1), second switch assembly (Q2) is electrically connected at the coil (L1) of motor 5 and second end of coil (L2) respectively, and first end of coil (L1) and coil (L2) then electrically connects the output of rectification circuit 31; The grid (G) of first switch module (Q1), second switch assembly (Q2) is electrically connected at first pin and second pin of controller 33 (drive IC) respectively, and the source electrode (S) of first switch module (Q1), second switch assembly (Q2) is electrically connected at earth terminal.
Again with reference to figure 4; The operating principle of controller for motor 3 of the present invention is following: the phase place of the magnetic pole when the sensing cell 331 sensing motors 5 of this controller 33 move is switched to produce phase place sensing signal Sp; This signaling control unit 332 receiving phase sensing signal Sp; And produce first drive signal (S1) and second drive signal (S2) according to phase place sensing signal Sp, and export first switch module (Q1) and the second switch assembly (Q2) of drive circuit 34 respectively to, wherein when the high potential (second drive signal this moment (S2) be an electronegative potential) of first drive signal (S1) when passing through first switch module (Q1); With regard to conducting first switch module (Q1); And also conducting the 4th switch module (Q4), make the electric current (I) of power supply to arrive earth terminal afterwards by the 4th switch module (Q4) flow through coil (L), first switch module (Q1) of motor 5, cooperate shown in Figure 6; The Preset Time of preparing to convert high potential into by electronegative potential when second drive signal (S2) (T) (for example being 6-8 μ s) before; This signaling control unit 332 makes the first drive signal S1 convert electronegative potential into by high potential earlier, to break off first switch module (Q1) in advance, has converted high potential into by electronegative potential and work as second drive signal (S2); And when the second switch assembly (Q2); Be conducting second switch assembly (Q2) and the 3rd switch module (Q3), make the electric current (I) of power supply to arrive earth terminal afterwards by the 3rd switch module (Q3) flow through coil (L), the second switch assembly (Q2) of motor 5, the Preset Time of preparing to convert high potential into by electronegative potential when first drive signal (S1) again (T) before; This signaling control unit 332 makes second drive signal (S2) convert electronegative potential into by high potential earlier; Breaking off second switch assembly (Q2) in advance, and convert high potential into by electronegative potential when first drive signal (S1), and during through first switch module (Q1); It is conducting first switch module (Q1); In order to do opening or close first switch module (Q1) and second switch assembly (Q2) in turn, and make the sense of current that the coil (L) of motor 5 flows through alternately through first drive signal (S1) and second drive signal (S2), and then CD-ROM drive motor 5 operations.Utilize aforesaid way; Just can be before next switch module conducting; Break off a switch module in advance, make the not conducting simultaneously of two switch modules, and make source current (I) can pass through the coil (L) (load) of this motor 5 smoothly; And be unlikely to form short-circuit loop, and then burn out these switch modules because of two switch module conductings simultaneously.
Moreover; Be designed with phase place sensing cell (Hall sensing component) in the drive IC of controller for motor of the present invention; And also only use two output pins just can reach four switch modules of control full bridge driving circuit, thereby can simplify the complexity of circuit and reduce cost.
Please refer to Fig. 7; Different is with first embodiment; The controller for motor 3 of second embodiment of the invention further comprises abnormality detection unit 333, and it builds in the controller 33, and controller 33 may further include the 5th pin (F00) (not shown) or the 6th pin (R00) (not shown) or had the 5th pin, the 6th pin simultaneously; And the 5th pin and the 6th pin can be electrically connected to outside system 6; Wherein to outside system 6, to let system 6 can learn the present rotating speed of motor 5, the 6th pin is then in order to provide the caution effect in order to the phase place sensing signal (Sp) of feedback motor 5 for the 5th pin; And cooperate shown in Figure 8; Above-mentioned abnormality detection unit 333 receives and judges that according to the phase place sensing signal (Sp) (like (a) of Fig. 9) that sensing cell 331 sensing motors 5 are produced motor 5 is to be in normal condition or abnormality (S801); If motor 5 is in normal operating condition (S802); Then phase place sensing signal (Sp) then is the pulse width modulating signal of high electronegative potential alternate, if motor 5 is in abnormality, then phase place sensing signal (Sp) then (is shown as high potential for the continuous signal of high potential or electronegative potential among Fig. 9; High electronegative potential is only represented the switching phase place of motor 5; When phase place sensing signal (Sp) is the continuous signal of high potential or electronegative potential, represent that then the magnetic pole of motor 5 does not carry out the action of commutation, promptly motor 5 is unusual); Wherein when abnormality detection unit 333 judges that motor 5 unusually; The abnormal signal (RD) (like (b) of Fig. 9) that is converted into high potential by original electronegative potential can be exported in this abnormality detection unit 333, and exports this abnormal signal (RD) to outside system 6 (S803) through the 6th pin (R00) of controller 33, to let system 6 can learn that motor 5 is in abnormality at present.
The above is merely example, and is not in order to limit.Anyly do not break away from spirit of the present invention and scope and, all should be contained in the appended claim the modification or the change of its equivalence of carrying out.
Claims (15)
1. a controller for motor electrically connects motor, and said controller for motor comprises:
Controller has Preset Time, and the magnetic pole phase of said controller during in order to the said motor operation of sensing switched producing the phase place sensing signal, and according to said phase place sensing signal to produce first drive signal and second drive signal and output; And
Drive circuit; Be electrically connected said motor and said controller respectively; Said drive circuit comprises first switch module and second switch assembly; Said first switch module and said second switch assembly receive said first drive signal and said second drive signal respectively; And said first switch module and said second switch assembly are opened in turn or are closed according to said first drive signal and said second drive signal respectively, and make the sense of current that the coil of said motor flows through alternately, to drive said motor operation;
Wherein said controller is before the said Preset Time of the said second switch assembly of the said second drive signal conducting; Close said first switch module; And before the said Preset Time of said first switch module of the said first drive signal conducting, close said second switch assembly.
2. controller for motor as claimed in claim 1 further comprises:
Rectification circuit electrically connects said drive circuit and outside AC power, converts direct voltage and output in order to the alternating voltage with said AC power; And
Reduction voltage circuit electrically connects said rectification circuit and said controller, and in order to the direct voltage of reduction through said rectification circuit output, and the direct voltage of exporting after the said step-down is given said controller.
3. according to claim 1 or claim 2 controller for motor, wherein, said controller comprises:
Sensing cell, the magnetic pole phase during in order to the said motor operation of sensing switch to produce said phase place sensing signal; And
Signaling control unit has said Preset Time, and said signaling control unit receives said phase place sensing signal, and also exports to produce said first drive signal and said second drive signal according to said phase place sensing signal.
4. controller for motor as claimed in claim 3; Wherein, Said controller further comprises the abnormality detection unit; Said abnormality detection unit judges that according to the said phase place sensing signal that the said motor of said sensing cell sensing is produced said motor is to be in normal condition or abnormality, and when said phase place sensing signal was the pulse width modulating signal of high electronegative potential alternate, the said motor of said abnormality detection unit judges was in normal condition; And when said phase place sensing signal was the continuous signal of high potential or electronegative potential, the said motor of said abnormality detection unit judges was in abnormality.
5. controller for motor as claimed in claim 4; Wherein, The abnormal signal of when the said motor of said abnormality detection unit judges is in abnormality, exporting continuous high potential or electronegative potential is to system, to let said system learn that said motor is in abnormality at present.
6. controller for motor as claimed in claim 1; Wherein, Said drive circuit is a full-bridge circuit; It comprises that said first switch module, the said second switch assembly of bridge reach the 3rd switch module, the 4th switch module of going up bridge down; These switch modules are electrically connected between the said coil and said controller of said motor; Said said the 3rd switch module, said the 4th switch module of going up bridge is bipolar junction transistor, and said said first switch module, the said second switch assembly of bridge down are mos field effect transistor, and the said collector electrode of going up two bipolar junction transistors of bridge is electrically connected at said coil; And the base stage of said two bipolar junction transistors and emitter are electrically connected on rectification circuit; The said drain electrode of two mos field effect transistor of bridge down is electrically connected at the two ends of said coil and electrically connects the said base stage that goes up the bipolar junction transistor of bridge respectively, and the grid of said two mos field effect transistor is electrically connected at said controller, and the source electrode of said two mos field effect transistor is electrically connected at earth terminal.
7. controller for motor as claimed in claim 1; Wherein, Said drive circuit is a half-bridge circuit; It comprises said first switch module and said second switch assembly; These switch modules are electrically connected at respectively between first coil, second coil and the said controller of said motor, and said first switch module and said second switch assembly are mos field effect transistor, and the drain electrode of said two mos field effect transistor is electrically connected at said first coil and said second coil respectively; The grid of said two mos field effect transistor is electrically connected at said controller, and the source electrode of said two mos field effect transistor is electrically connected at earth terminal.
8. controller for motor as claimed in claim 1; Wherein, said first drive signal and said second drive signal all are to have the pulse width modulating signal that high potential and electronegative potential replace, and said first drive signal and said second drive signal can not be high potential simultaneously; Wherein when the high potential of said first drive signal during through said first switch module; Be said first switch module of conducting, the electronegative potential of said first drive signal is promptly closed first switch module during through said first switch module; And the high potential of said second drive signal is during through said second switch assembly; Be the said second switch assembly of conducting, the electronegative potential of said second drive signal is promptly closed the second switch assembly during through said second switch assembly.
9. controller for motor as claimed in claim 8; Wherein, Said controller is before said second drive signal is the said Preset Time of high potential and conducting second switch assembly; Make said first drive signal convert electronegative potential into by high potential, closing said first switch module in advance, and said controller is before said first drive signal is the said Preset Time of high potential and conducting first switch module; Make said second drive signal convert electronegative potential into, to close said second switch assembly in advance by high potential.
10. controller electrically connect the drive circuit of controller for motor, and said drive circuit electrically connects motor, and said controller comprises:
Sensing cell, the magnetic pole phase during in order to the said motor operation of sensing switch to produce said phase place sensing signal; And
Signaling control unit has Preset Time, and said signaling control unit receives said phase place sensing signal, and the said phase place sensing signal of foundation is to produce first drive signal and second drive signal and to export said drive circuit to;
First switch module of wherein said drive circuit and second switch assembly are opened in turn or are closed according to said first drive signal that receives and said second drive signal respectively; And make the sense of current that the coil of said motor flows through alternately, to drive said motor operation; And said signaling control unit is before the said Preset Time of the said second switch assembly of the said second drive signal conducting; Close said first switch module; And before the said Preset Time of said first switch module of the said first drive signal conducting, close said second switch assembly.
11. controller as claimed in claim 10, wherein, said sensing cell is the Hall sensing component, and said controller is a drive IC.
12. controller as claimed in claim 11; Wherein, Said drive IC comprises first pin, second pin, three-prong and the 4th pin; In order to export said first drive signal and said second drive signal, said three-prong electrically connects power supply respectively for said first pin and said second pin, and said the 4th pin electrically connects the ground end.
13. controller as claimed in claim 12; Wherein, Said drive IC further comprises the 5th pin and the 6th pin; All electrically connect system, said the 5th pin is in order to the rotating speed of the said motor of feedback to said system, and said the 6th pin at said motor continuous signal to the said system of output high potential when unusual or electronegative potential takes place.
14. controller as claimed in claim 10; It further comprises the abnormality detection unit; Said abnormality detection unit judges that according to the said phase place sensing signal that the said motor of said sensing cell sensing is produced said motor is to be in normal condition or abnormality; When the pulse duration that is high electronegative potential alternate when said phase place sensing signal is wherein adjusted signal; The said motor of said abnormality detection unit judges is in normal condition, and when said phase place sensing signal was the continuous signal of high potential or electronegative potential, the said motor of said abnormality detection unit judges was in abnormality.
15. controller as claimed in claim 14, wherein, the high potential that the six pin output of said abnormality detection unit through said controller is continuous or the abnormal signal of electronegative potential are to system, to let said system learn that said motor is in abnormality at present.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910137715A CN101873095B (en) | 2009-04-27 | 2009-04-27 | Motor control device and controller thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910137715A CN101873095B (en) | 2009-04-27 | 2009-04-27 | Motor control device and controller thereof |
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| Publication Number | Publication Date |
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| CN101873095A CN101873095A (en) | 2010-10-27 |
| CN101873095B true CN101873095B (en) | 2012-09-05 |
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| CN200910137715A Active CN101873095B (en) | 2009-04-27 | 2009-04-27 | Motor control device and controller thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486559A (en) * | 1974-11-25 | 1977-09-21 | Sevcon Ltd | Pulse control circuits |
| DE3424495A1 (en) * | 1984-07-04 | 1986-01-16 | Julius, Ernst Wilhelm, 5883 Kierspe | Switching device for a drive motor |
| CN1531185A (en) * | 2003-03-14 | 2004-09-22 | 三美电机株式会社 | Motor driving circuit and method |
| CN101001076A (en) * | 2006-01-13 | 2007-07-18 | 欧姆龙株式会社 | Inverter device |
| CN101316089A (en) * | 2007-05-29 | 2008-12-03 | 建准电机工业股份有限公司 | Driving circuit of DC brushless motor |
-
2009
- 2009-04-27 CN CN200910137715A patent/CN101873095B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486559A (en) * | 1974-11-25 | 1977-09-21 | Sevcon Ltd | Pulse control circuits |
| DE3424495A1 (en) * | 1984-07-04 | 1986-01-16 | Julius, Ernst Wilhelm, 5883 Kierspe | Switching device for a drive motor |
| CN1531185A (en) * | 2003-03-14 | 2004-09-22 | 三美电机株式会社 | Motor driving circuit and method |
| CN101001076A (en) * | 2006-01-13 | 2007-07-18 | 欧姆龙株式会社 | Inverter device |
| CN101316089A (en) * | 2007-05-29 | 2008-12-03 | 建准电机工业股份有限公司 | Driving circuit of DC brushless motor |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2002-325436A 2002.11.08 |
| JP特开2003-134820A 2003.05.09 |
| JP特开2004-254380A 2004.09.09 |
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