CN204244125U - A kind of motor rotor position testing circuit - Google Patents
A kind of motor rotor position testing circuit Download PDFInfo
- Publication number
- CN204244125U CN204244125U CN201420776660.4U CN201420776660U CN204244125U CN 204244125 U CN204244125 U CN 204244125U CN 201420776660 U CN201420776660 U CN 201420776660U CN 204244125 U CN204244125 U CN 204244125U
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- electric capacity
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Abstract
The utility model discloses a kind of motor rotor position testing circuit, its key is: described circuit comprises control chip P2, and its 1 end connects H3 end by R21; 7 ends are connected between resistance R14 and electric capacity C4, are also connected three phase electric machine input line M1 by resistance R11 with resistance R1; M1 by after resistance R1 again respectively by electric capacity C1 and resistance R2 ground connection; Input line M2 is later again respectively by electric capacity C2 and resistance R5 ground connection by resistance R4; Input line M3 is later again respectively by electric capacity C3 and resistance R8 ground connection by resistance R7.What the utility model adopted is is energized between two, the PWM mode of three-phase six state, bridge Heng Tong under brachium pontis, upper bridge modulation; Just back electromotive force zero-crossing can be detected by detecting motor three phase terminals voltage; Its principle is simple, easy to use.
Description
Technical field
the utility model relates to a kind of motor rotor position testing circuit.
Background technology
For the position of the necessary detection rotor (many magnetic poles ring-shaped rotor) of brshless DC motor, to commutate to stator current, rotor just can be made to rotate to a direction continuously.Hall element detection rotor position of magnetic pole is generally used to the detection of rotor-position, carries out switching commutation by triode.
Utility model content
The purpose of this utility model is to provide a kind of motor rotor position testing circuit.
To achieve these goals, by the following technical solutions: a kind of motor rotor position testing circuit, it is characterized in that: described motor rotor position testing circuit comprises control chip P2,1 end of described control chip P2 connects H3 end by resistance R21,1 end of control chip P2 is by electric capacity C6 ground connection, and 1 end of control chip P2 also connects 5V power supply by resistance R18; 2 ends of control chip P2,4 ends and 5 ends are vacant; 3 ends of control chip P2 connect 12V power supply; 6 ends of control chip P2 are by resistance R14 and electric capacity C4 ground connection, and 6 ends of control chip P2 are also communicated with 10 ends with 8 ends of control chip P2, and 7 ends of control chip P2 are connected between resistance R14 and electric capacity C4; 7 ends of described control chip are connected the input line M1 of three phase electric machine with resistance R1 by resistance R11; The input line M1 of described three phase electric machine by after resistance R1 after respectively by electric capacity C1 and resistance R2 ground connection, input line M1 is also connected with the collector electrode of triode Q1 with resistance R3 by resistance R1; The grounded emitter of triode Q1, the base stage of triode Q1 connects compensating circuit port TZXH by resistance R22; The input line M2 of three phase electric machine is by resistance R4 later again respectively by electric capacity C2 and resistance R5 ground connection, and input line M2 is also by the collector electrode of resistance R4 and resistance R6 connecting triode Q2; The grounded emitter of triode Q2, the base stage of triode Q2 connects compensating circuit port TZXH by resistance R46; The input line M3 of three phase electric machine is by resistance R7 later again respectively by electric capacity C3 and resistance R8 ground connection, and input line M3 is also by the collector electrode of resistance R7 and resistance R9 connecting triode Q3; The grounded emitter of triode Q3, the base stage of triode Q3 connects compensating circuit port TZXH by resistance R47; The input line M3 of three phase electric machine is also by 11 ends of resistance R7 and resistance R10 connection control chip P2; Input line M2 is also by 9 ends of resistance R4 and resistance R12 connection control chip P2; Resistance R13 is connected between 6 ends of control chip P2 and 9 ends; Connect electric capacity C8 between 9 ends of control chip P2 and earth terminal, between 11 ends of control chip P2 and earth terminal, connect electric capacity C9, contact resistance R48 between 8 ends of control chip P2 and 11 ends; The 12 end ground connection of control chip P2; 13 ends of control chip P2 connect 5V power supply by resistance R15, and 13 ends of control chip P2 connect H1 end by resistance R20, and 13 ends of control chip P2 are by electric capacity C10 ground connection; 14 ends of control chip P2 connect 5V power supply by resistance R17, and 14 ends of control chip P2 connect H2 end by resistance R19, and 14 ends of control chip P2 are by electric capacity C7 ground connection.
Described control chip P2 model is LM339.
Described H1 end, H2 end and H3 end are respectively three phase electric machine input line M1, the back electromotive force of M2 and M3 converts corresponding hall sensor signal port to.
The signal of described H1 end, H2 end and H3 end outputs in single-chip microcomputer or other testing circuits.
What the utility model adopted is is energized between two, the PWM mode of three-phase six state, bridge Heng Tong under brachium pontis, upper bridge modulation; Just back electromotive force zero-crossing can be detected by detecting motor three phase terminals voltage; Its principle is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit structure diagram of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
As shown in Figure 1, a kind of motor rotor position testing circuit, comprises control chip P2, and 1 end of described control chip P2 connects H3 end by resistance R21, and 1 end of control chip P2 is by electric capacity C6 ground connection, and 1 end of control chip P2 also connects 5V power supply by resistance R18; 2 ends of control chip P2,4 ends and 5 ends are vacant; 3 ends of control chip P2 connect 12V power supply; 6 ends of control chip P2 are by resistance R14 and electric capacity C4 ground connection, and 6 ends of control chip P2 are also communicated with 10 ends with 8 ends of control chip P2, and 7 ends of control chip P2 are connected between resistance R14 and electric capacity C4; 7 ends of described control chip are connected the input line M1 of three phase electric machine with resistance R1 by resistance R11; The input line M1 of described three phase electric machine by after resistance R1 after respectively by electric capacity C1 and resistance R2 ground connection, input line M1 is also connected with the collector electrode of triode Q1 with resistance R3 by resistance R1; The grounded emitter of triode Q1, the base stage of triode Q1 connects compensating circuit port TZXH by resistance R22; The input line M2 of three phase electric machine is by resistance R4 later again respectively by electric capacity C2 and resistance R5 ground connection, and input line M2 is also by the collector electrode of resistance R4 and resistance R6 connecting triode Q2; The grounded emitter of triode Q2, the base stage of triode Q2 connects compensating circuit port TZXH by resistance R46; The input line M3 of three phase electric machine is by resistance R7 later again respectively by electric capacity C3 and resistance R8 ground connection, and input line M3 is also by the collector electrode of resistance R7 and resistance R9 connecting triode Q3; The grounded emitter of triode Q3, the base stage of triode Q3 connects compensating circuit port TZXH by resistance R47; The input line M3 of three phase electric machine is also by 11 ends of resistance R7 and resistance R10 connection control chip P2; Input line M2 is also by 9 ends of resistance R4 and resistance R12 connection control chip P2; Resistance R13 is connected between 6 ends of control chip P2 and 9 ends; Connect electric capacity C8 between 9 ends of control chip P2 and earth terminal, between 11 ends of control chip P2 and earth terminal, connect electric capacity C9, contact resistance R48 between 8 ends of control chip P2 and 11 ends; The 12 end ground connection of control chip P2; 13 ends of control chip P2 connect 5V power supply by resistance R15, and 13 ends of control chip P2 connect H1 end by resistance R20, and 13 ends of control chip P2 are by electric capacity C10 ground connection; 14 ends of control chip P2 connect 5V power supply by resistance R17, and 14 ends of control chip P2 connect H2 end by resistance R19, and 14 ends of control chip P2 are by electric capacity C7 ground connection.
Described control chip P2 model is LM339.
Described H1 end, H2 end and H3 end are respectively three phase electric machine input line M1, the back electromotive force of M2 and M3 converts corresponding hall sensor signal port to.
The signal of described H1 end, H2 end and H3 end outputs in single-chip microcomputer or other testing circuits.
In circuit of the present utility model, M1, M2, M3 are three phase electric machine phase line, by detecting three phase electric machine back electromotive force, convert three phase electric machine back electromotive force to corresponding three-phase hall position.Back electromotive force from phase line compares by control chip P2, export corresponding hall position, resistance R1, R2, R4, R5, R7, R8 are to back electromotive force dividing potential drop, restriction is input to the input voltage of control chip P2, electric capacity C1, C2, C3, filter circuit, removes the interference signal above three-phase phase line.Resistance R15, R17, R18 are pull-up resistor.Triode Q1, Q2, Q3 waveform modulating signal, as long as time delay and low speed effect of phase compensation.
What the utility model adopted is is energized between two, the PWM mode of three-phase six state, bridge Heng Tong under brachium pontis, upper bridge modulation; Just back electromotive force zero-crossing can be detected by detecting motor three phase terminals voltage; Its principle is simple, easy to use.
Claims (3)
1. a motor rotor position testing circuit, it is characterized in that: described motor rotor position testing circuit comprises control chip P2,1 end of described control chip P2 connects H3 end by resistance R21,1 end of control chip P2 is by electric capacity C6 ground connection, and 1 end of control chip P2 also connects 5V power supply by resistance R18; 2 ends of control chip P2,4 ends and 5 ends are vacant; 3 ends of control chip P2 connect 12V power supply; 6 ends of control chip P2 are by resistance R14 and electric capacity C4 ground connection, and 6 ends of control chip P2 are also communicated with 10 ends with 8 ends of control chip P2, and 7 ends of control chip P2 are connected between resistance R14 and electric capacity C4; 7 ends of described control chip are connected the input line M1 of three phase electric machine with resistance R1 by resistance R11; The input line M1 of described three phase electric machine by after resistance R1 after respectively by electric capacity C1 and resistance R2 ground connection, input line M1 is also connected with the collector electrode of triode Q1 with resistance R3 by resistance R1; The grounded emitter of triode Q1, the base stage of triode Q1 connects compensating circuit port TZXH by resistance R22; The input line M2 of three phase electric machine is by resistance R4 later again respectively by electric capacity C2 and resistance R5 ground connection, and input line M2 is also by the collector electrode of resistance R4 and resistance R6 connecting triode Q2; The grounded emitter of triode Q2, the base stage of triode Q2 connects compensating circuit port TZXH by resistance R46; The input line M3 of three phase electric machine is by resistance R7 later again respectively by electric capacity C3 and resistance R8 ground connection, and input line M3 is also by the collector electrode of resistance R7 and resistance R9 connecting triode Q3; The grounded emitter of triode Q3, the base stage of triode Q3 connects compensating circuit port TZXH by resistance R47; The input line M3 of three phase electric machine is also by 11 ends of resistance R7 and resistance R10 connection control chip P2; Input line M2 is also by 9 ends of resistance R4 and resistance R12 connection control chip P2; Resistance R13 is connected between 6 ends of control chip P2 and 9 ends; Connect electric capacity C8 between 9 ends of control chip P2 and earth terminal, between 11 ends of control chip P2 and earth terminal, connect electric capacity C9, contact resistance R48 between 8 ends of control chip P2 and 11 ends; The 12 end ground connection of control chip P2; 13 ends of control chip P2 connect 5V power supply by resistance R15, and 13 ends of control chip P2 connect H1 end by resistance R20, and 13 ends of control chip P2 are by electric capacity C10 ground connection; 14 ends of control chip P2 connect 5V power supply by resistance R17, and 14 ends of control chip P2 connect H2 end by resistance R19, and 14 ends of control chip P2 are by electric capacity C7 ground connection.
2. motor rotor position testing circuit as claimed in claim 1, is characterized in that: described control chip P2 model is LM339.
3. motor rotor position testing circuit as claimed in claim 1, is characterized in that: described H1 end, H2 end and H3 end are respectively three phase electric machine input line M1, the back electromotive force of M2 and M3 converts corresponding hall sensor signal port to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420776660.4U CN204244125U (en) | 2014-12-11 | 2014-12-11 | A kind of motor rotor position testing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420776660.4U CN204244125U (en) | 2014-12-11 | 2014-12-11 | A kind of motor rotor position testing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204244125U true CN204244125U (en) | 2015-04-01 |
Family
ID=52773564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420776660.4U Expired - Fee Related CN204244125U (en) | 2014-12-11 | 2014-12-11 | A kind of motor rotor position testing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204244125U (en) |
-
2014
- 2014-12-11 CN CN201420776660.4U patent/CN204244125U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |