CN204258772U - A kind of resolver excitation signal interface circuit - Google Patents
A kind of resolver excitation signal interface circuit Download PDFInfo
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- CN204258772U CN204258772U CN201420719773.0U CN201420719773U CN204258772U CN 204258772 U CN204258772 U CN 204258772U CN 201420719773 U CN201420719773 U CN 201420719773U CN 204258772 U CN204258772 U CN 204258772U
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- 230000005284 excitation Effects 0.000 title claims abstract description 58
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- 239000003990 capacitor Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
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- 239000000295 fuel oil Substances 0.000 description 1
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Abstract
The utility model provides a kind of resolver excitation signal interface circuit, belongs to technical field of electromechanical control.It solve the problem that excitation signal existence and stability is poor, antijamming capability is weak that in prior art, Electric Machine Control exports.This resolver excitation signal interface circuit, comprise electric machine controller, this interface circuit also comprises first-order filtering circuit, differential amplifier circuit and second-order filter circuit, the output of electric machine controller is the input of this resolver excitation signal interface circuit, the output of electric machine controller is connected with the input of first-order filtering circuit, the output of first-order filtering circuit is connected with the input of differential amplifier circuit, the output of differential amplifier circuit is connected with second-order filter circuit, the output of second-order filter circuit is the output of this resolver excitation signal interface circuit.This resolver excitation signal interface circuit can provide stable excitation signal, has antijamming capability strong, the simple advantage of structure.
Description
Technical field
The utility model belongs to technical field of electromechanical control, relates to a kind of resolver excitation signal interface circuit.
Background technology
Along with the development of economy, the recoverable amount of automobile constantly increases, automobile has spread in common people family, but rising steadily of oil price, increase the expenditure that people use automobile, for this reason, automobile vendors have gone out the lower small displacement engine with supercharger of energy consumption for this Study on Problems, although reduce the drive form that energy consumption still cannot break away from fuel oil.
Believe that the mixed dynamic drive form of oil electricity and electric automobile are only the trend of Future New Energy Source automobile, along with the development and apply of pure electronic and mixed electrical automobile, in order to ensure the normal work of motor, accurately must detect the rotating speed of motor, to make motor even running.Present stage AC magnetoelectric machine speed detection equipment in topmost part be resolver, and resolver needs input one group of excitation signal could export two groups of orthogonal positions, the output signal of resolver is directly transferred to by holding wire extraction and the detection that signal is carried out in motor driver inside, and the accuracy rate of velocity measuring depends primarily on the quality height of driver input end signal; When interference is smaller, the accuracy rate of velocity measuring is higher, along with the enhancing of interference, the accuracy rate of velocity measuring declines, directly have influence on the accuracy of current of electric, speed, Torque Control, finally by causing motor performance and desirable control effects to occur deviation, have influence on the performance index that whole equipment cannot realize former regulation.
For the problems referred to above, Chinese patent discloses a kind of filter for resolver (its application number is CN201220253502.1), comprise motor driver, motor and resolver, also comprise electric capacity, common mode inductance, thermistor and magnet exciting coil, interface one is connected with holding wire first, interface two is connected with holding wire second, two ends connection signal line first and the holding wire second respectively of electric capacity first, electric capacity second and thermistor, two coils of common mode inductance first are connected in holding wire first and holding wire second respectively.The novel signal quality improving output signal of rotary transformer of this use, antijamming capability is strong, and external radiation leakage is low, and signal identifiability is high, and motor speed accuracy of detection is high.
Although above-mentioned patent can improve the signal quality of output signal of rotary transformer, this filter circuit design obtains too simple, is not suitable for the electric automobile field being used in circumstance complication, adopts special decoding integrated chip simultaneously, system cost is increased.
Summary of the invention
There are the problems referred to above in the utility model for existing technology, propose a kind of resolver excitation signal interface circuit, this resolver excitation signal interface circuit can provide stable excitation signal, and it is strong to have antijamming capability, the simple advantage of structure.
The utility model is realized by following technical proposal: a kind of resolver excitation signal interface circuit, comprise the electric machine controller for exporting excitation signal, it is characterized in that, this resolver excitation signal interface circuit also comprise for adjust electric machine controller export the level of excitation signal and the first-order filtering circuit of amplitude, for integrating and amplifying the differential amplifier circuit that processes first-order filtering circuit output signal and the second-order filter circuit of harmonic wave in outputing signal for filtering amplifying circuit, the output of described electric machine controller is the input of this resolver excitation signal interface circuit, the output of described electric machine controller is connected with the input of first-order filtering circuit, the described output of first-order filtering circuit is connected with the input of differential amplifier circuit, the output of described differential amplifier circuit is connected with second-order filter circuit, the output of described second-order filter circuit is the output of this resolver excitation signal interface circuit.
In the speed detection equipment of AC magnetoelectric machine, topmost part is resolver, and resolver needs input one group of excitation signal could export two groups of orthogonal positions, electric machine controller exports excitation signal, excitation signal is exported to differential amplifier circuit and is carried out signal differential amplification after the filtering of first-order filtering primary circuit, and the signal after process is exported to second-order filter circuit and carried out secondary filtering, thus export more stable excitation signal there is better antijamming capability.
In above-mentioned resolver excitation signal interface circuit, described electric machine controller comprises two signal output parts, two described signal output parts are respectively port one and port two, described first-order filtering circuit comprises five resistance and three electric capacity, five resistance are respectively resistance R1, resistance R2, resistance R3, resistance R4 and resistance R8, three electric capacity are respectively C1, C2 and C3, described port one is connected with one end of resistance R1, the other end of described resistance R1 is connected with one end of resistance R2, the other end of described resistance R2 is an output of first-order filtering circuit, the connecting portion that described resistance R1 is connected with resistance R2 is connected with one end of electric capacity C1, the other end of described electric capacity C1 is connected with one end of electric capacity C2, described port two is connected with one end of resistance R3, the other end of described resistance R3 is connected with one end of resistance R4, the connecting portion that described resistance R3 is connected with resistance R4 is connected with the other end of electric capacity C2, the connecting portion ground connection that described electric capacity C1 is connected with electric capacity C2, the other end of described resistance R4 is connected with one end of resistance R8 and electric capacity C3, described resistance R8 is connected with the other end of electric capacity C3, the connecting portion ground connection that described resistance R8 is connected with electric capacity C3, the connecting portion that described resistance R4 is connected with resistance R8 and electric capacity C3 is another output of this first-order filtering circuit.Port one and port two export excitation signal after filtering process by the excitation signal behind resistance R2 one end and electric capacity C3 one end output filtering.
In above-mentioned resolver excitation signal interface circuit, described differential amplifier circuit comprises comparator U1A, resistance R5, resistance R6 and electric capacity C4, the input in the same way of described comparator U1A and an output of above-mentioned first-order filtering circuit, one end of resistance R2 connects, the reverse input end of described comparator U1A and another output of above-mentioned first-order filtering circuit, the connecting portion that resistance R4 is connected with resistance R8 and electric capacity C3 connects, inputting in the same way of described comparator is also connected with one end of resistance R5, the other end of described resistance R5 is connected with the output of comparator U1A, described resistance R5 is in parallel with electric capacity C4, the output of described comparator U1A is also connected with one end of resistance R6, the other end of described resistance R6 is the output of this differential amplifier circuit.Comparator U1A resistance R2 one end exports the excitation signal after first-order filtering circuit filtering
In above-mentioned resolver excitation signal interface circuit, described second-order filter circuit comprises comparator U1B, resistance R7, electric capacity C5 and resistance C6, one end of described resistance R7 and the output of above-mentioned differential amplifier circuit, one end of resistance R6 connects, the other end of described R7 is connected with the reverse input end of comparator U1B, the reverse input end of described comparator is also connected with electric capacity C6 one end, the other end ground connection of described electric capacity C6, the connecting portion that described resistance R6 is connected with resistance R7 is connected with one end of electric capacity C5, the other end of described electric capacity C5 is connected with the input in the same way of comparator U1B, described electric capacity C5 and the comparator U1B connecting portion that input is connected in the same way is connected with the output of comparator U1B, the output of described comparator U1B is the output of this resolver excitation signal interface circuit.Second-order filter circuit carries out secondary filtering to signal, the signal that process place is more stable.
In above-mentioned resolver excitation signal interface circuit, described electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6 are ceramic disc capacitor.The performance of ceramic disc capacitor is more stable.
Compared with prior art, this resolver excitation signal interface circuit has the following advantages: 1, adopt multistage filter circuit, and by force anti-interference, performance is more stable; 2, excitation signal is produced by electric machine controller acp chip, without the need to external dedicated integrated chip; 3, structure is simple, cost-saving, adopts ripe device, has high reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1, electric machine controller; 2, first-order filtering circuit; 3, differential amplifier circuit; 4, second-order filter circuit.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, a kind of resolver excitation signal interface circuit, comprise electric machine controller 1, first-order filtering circuit 2, differential amplifier circuit 3 and second-order filter circuit 4, the output of electric machine controller 1 is the input of this resolver excitation signal interface circuit, the output of electric machine controller 1 is connected with the input of first-order filtering circuit 2, the output of first-order filtering circuit 2 is connected with the input of differential amplifier circuit 3, the output of differential amplifier circuit 3 is connected with second-order filter circuit 4, the output of second-order filter circuit 4 is the output of this resolver excitation signal interface circuit.
First-order filtering circuit 2 comprises five resistance and three electric capacity, and five resistance are respectively resistance R1, resistance R2, resistance R3, resistance R4 and resistance R8, and three electric capacity are respectively C1, C2 and C3; Differential amplifier circuit 3 comprises comparator U1A, resistance R5, resistance R6 and electric capacity C4; Second-order filter circuit 4 comprises comparator U1B, resistance R7, electric capacity C5 and resistance C6; Electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6 are ceramic disc capacitor.
Electric machine controller 1 comprises two signal output parts, two signal output parts are respectively port one and port two, port one is connected with one end of resistance R1, the other end of resistance R1 is connected with one end of resistance R2, the other end of resistance R2 is an output of first-order filtering circuit 2, the connecting portion that resistance R1 is connected with resistance R2 is connected with one end of electric capacity C1, the other end of electric capacity C1 is connected with one end of electric capacity C2, port two is connected with one end of resistance R3, the other end of resistance R3 is connected with one end of resistance R4, the connecting portion that resistance R3 is connected with resistance R4 is connected with the other end of electric capacity C2, the connecting portion ground connection that electric capacity C1 is connected with electric capacity C2, the other end of resistance R4 is connected with one end of resistance R8 and electric capacity C3, resistance R8 is connected with the other end of electric capacity C3, the connecting portion ground connection that resistance R8 is connected with electric capacity C3, the connecting portion that resistance R4 is connected with resistance R8 and electric capacity C3 is another output of first-order filtering circuit 2, the input in the same way of comparator U1A and an output of first-order filtering circuit 2, one end of resistance R2 connects, the reverse input end of comparator U1A and another output of first-order filtering circuit 2, the connecting portion that resistance R4 is connected with resistance R8 and electric capacity C3 connects, inputting in the same way of comparator is also connected with one end of resistance R5, the other end of resistance R5 is connected with the output of comparator U1A, resistance R5 is in parallel with electric capacity C4, the output of comparator U1A is also connected with one end of resistance R6, the other end of resistance R6 is the output of this differential amplifier circuit 3, comparator U1A resistance R2 one end exports the filtered excitation signal of first-order filtering circuit 2, one end of resistance R7 and the output of differential amplifier circuit 3, one end of resistance R6 connects, the other end of R7 is connected with the reverse input end of comparator U1B, the reverse input end of comparator is also connected with electric capacity C6 one end, the other end ground connection of electric capacity C6, the connecting portion that resistance R6 is connected with resistance R7 is connected with one end of electric capacity C5, the other end of electric capacity C5 is connected with the input in the same way of comparator U1B, electric capacity C5 and the comparator U1B connecting portion that input is connected in the same way is connected with the output of comparator U1B, the output of comparator U1B is the output of this resolver excitation signal interface circuit.
The operation principle of this resolver excitation signal interface circuit is as follows: in the speed detection equipment of AC magnetoelectric machine, topmost part is resolver, and resolver needs input one group of excitation signal could export two groups of orthogonal positions, electric machine controller 1 two outputs export excitation signal, excitation signal exports to the comparator U1A in differential amplifier circuit 3 after the elementary filtering of first-order filtering circuit 2 through resistance R2 and electric capacity C3, differential amplifier circuit 3 is to carrying out signal differential amplification, the excitation signal of input carries out amplifying process and two excitation signals of input is processed into an output signal output by differential amplifier circuit 3, signal is exported to second-order filter circuit 4 through resistance R5 and is carried out secondary filtering, signal exports to comparator U1B through resistance R6, signal after process exports by comparator U1B, the rated operational voltage of comparator U1A and comparator U1B is 15V, the excitation signal making this resolver excitation signal interface circuit export after above-mentioned process is more stable, there is better antijamming capability.
Claims (5)
1. a resolver excitation signal interface circuit, comprise the electric machine controller (1) for exporting excitation signal, it is characterized in that, this resolver excitation signal interface circuit also comprises the first-order filtering circuit (2) of level for adjusting the excitation signal that electric machine controller (1) exports and amplitude, differential amplifier circuit (3) that first-order filtering circuit (2) outputs signal is processed and the second-order filter circuit (4) of harmonic wave in outputing signal for filtering amplifying circuit with amplifying for integrating, the output of described electric machine controller (1) is the input of this resolver excitation signal interface circuit, the output of described electric machine controller (1) is connected with the input of first-order filtering circuit (2), the output of described first-order filtering circuit (2) is connected with the input of differential amplifier circuit (3), the output of described differential amplifier circuit (3) is connected with second-order filter circuit (4), the output of described second-order filter circuit (4) is the output of this resolver excitation signal interface circuit.
2. resolver excitation signal interface circuit according to claim 1, it is characterized in that, described electric machine controller (1) comprises two signal output parts, two described signal output parts are respectively port one and port two, described first-order filtering circuit (2) comprises five resistance and three electric capacity, five resistance are respectively resistance R1, resistance R2, resistance R3, resistance R4 and resistance R8, three electric capacity are respectively C1, C2 and C3, described port one is connected with one end of resistance R1, the other end of described resistance R1 is connected with one end of resistance R2, the other end of described resistance R2 is an output of first-order filtering circuit (2), the connecting portion that described resistance R1 is connected with resistance R2 is connected with one end of electric capacity C1, the other end of described electric capacity C1 is connected with one end of electric capacity C2, described port two is connected with one end of resistance R3, the other end of described resistance R3 is connected with one end of resistance R4, the connecting portion that described resistance R3 is connected with resistance R4 is connected with the other end of electric capacity C2, the connecting portion ground connection that described electric capacity C1 is connected with electric capacity C2, the other end of described resistance R4 is connected with one end of resistance R8 and electric capacity C3, described resistance R8 is connected with the other end of electric capacity C3, the connecting portion ground connection that described resistance R8 is connected with electric capacity C3, the connecting portion that described resistance R4 is connected with resistance R8 and electric capacity C3 is another output of this first-order filtering circuit (2).
3. resolver excitation signal interface circuit according to claim 1, it is characterized in that, described differential amplifier circuit (3) comprises comparator U1A, resistance R5, resistance R6 and electric capacity C4, the input in the same way of described comparator U1A and an output of above-mentioned first-order filtering circuit (2), one end of resistance R2 connects, the reverse input end of described comparator U1A and another output of above-mentioned first-order filtering circuit (2), the connecting portion that resistance R4 is connected with resistance R8 and electric capacity C3 connects, inputting in the same way of described comparator is also connected with one end of resistance R5, the other end of described resistance R5 is connected with the output of comparator U1A, described resistance R5 is in parallel with electric capacity C4, the output of described comparator U1A is also connected with one end of resistance R6, the other end of described resistance R6 is the output of this differential amplifier circuit (3).
4. resolver excitation signal interface circuit according to claim 1, it is characterized in that, described second-order filter circuit (4) comprises comparator U1B, resistance R7, electric capacity C5 and resistance C6, one end of described resistance R7 and the output of above-mentioned differential amplifier circuit (3), one end of resistance R6 connects, the other end of described R7 is connected with the reverse input end of comparator U1B, the reverse input end of described comparator is also connected with electric capacity C6 one end, the other end ground connection of described electric capacity C6, the connecting portion that described resistance R6 is connected with resistance R7 is connected with one end of electric capacity C5, the other end of described electric capacity C5 is connected with the input in the same way of comparator U1B, described electric capacity C5 and the comparator U1B connecting portion that input is connected in the same way is connected with the output of comparator U1B, the output of described comparator U1B is the output of this resolver excitation signal interface circuit.
5. the resolver excitation signal interface circuit according to Claims 2 or 3 or 4, is characterized in that, described electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6 are ceramic disc capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719773.0U CN204258772U (en) | 2014-11-26 | 2014-11-26 | A kind of resolver excitation signal interface circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719773.0U CN204258772U (en) | 2014-11-26 | 2014-11-26 | A kind of resolver excitation signal interface circuit |
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| Publication Number | Publication Date |
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| CN204258772U true CN204258772U (en) | 2015-04-08 |
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| CN201420719773.0U Expired - Fee Related CN204258772U (en) | 2014-11-26 | 2014-11-26 | A kind of resolver excitation signal interface circuit |
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| CN (1) | CN204258772U (en) |
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2014
- 2014-11-26 CN CN201420719773.0U patent/CN204258772U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 |