CN207850396U - Rotation becomes pumping signal driving circuit - Google Patents
Rotation becomes pumping signal driving circuit Download PDFInfo
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- CN207850396U CN207850396U CN201820285244.2U CN201820285244U CN207850396U CN 207850396 U CN207850396 U CN 207850396U CN 201820285244 U CN201820285244 U CN 201820285244U CN 207850396 U CN207850396 U CN 207850396U
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- 238000005086 pumping Methods 0.000 title claims abstract description 64
- 238000001914 filtration Methods 0.000 claims abstract description 34
- 230000005611 electricity Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
A kind of rotation change pumping signal driving circuit, including sequentially connected filter circuit, amplifying circuit and push-pull circuit, wherein, the filter circuit includes first-order filtering circuit and anti-phase integrator, the input terminal of the first-order filtering circuit becomes pumping signal for receiving rotation, the output end of the first-order filtering circuit is connect with the anti-phase integrator, and the filter circuit is used to becoming the rotation into pumping signal the target signal filter for being higher than predeterminated frequency；The input terminal of the amplifying circuit is connect with the output end of the anti-phase integrator, and output end is connect with the push-pull circuit, and the amplifying circuit and the push-pull circuit are used to be amplified rotation change pumping signal.The utility model can filter out the high frequency waves that rotation becomes in pumping signal, while rotary transformer secondary can effectively be driven to generate induced voltage.
Description
Technical field
The utility model is related to rotary transformer technology fields, become pumping signal driving circuit more particularly to a kind of rotation.
Background technology
Rotary transformer (resolver/transformer) is a kind of electromagnetic sensor, also known as synchronous decomposer.It
It is a kind of small-sized ac motor of measurement angle, for measuring the rotating shaft angular travel and angular speed of rotating object.Rotation becomes
Depressor (referred to as " rotation becomes ") is a very important component in motor, and the rotation by receiving fixed frequency becomes pumping signal
The signal of one group of amplitude and rotation angle at sine relation is generated, allows the controller of motor that can accurately calculate motor and turns
The angles and positions of son rotation.
Since circuit working environment is complicated under actual conditions, the rotation that converter (DA) generates becomes pumping signal, and often high frequency is dry
It is more to disturb equal noises, and rotation change pumping signal is of low quality, influences the rotor rotary angle position precision of controller acquisition,
Therefore pumping signal is filtered extremely important.
Utility model content
In view of above-mentioned condition, in the prior art rotation become pumping signal there is a problem of interference with it is of low quality, provide
A kind of rotation change pumping signal driving circuit.
A kind of rotation change pumping signal driving circuit, including sequentially connected filter circuit, amplifying circuit and push-pull circuit,
In,
The filter circuit includes first-order filtering circuit and anti-phase integrator, and the input terminal of the first-order filtering circuit is used
Become pumping signal in receiving to revolve, the output end of the first-order filtering circuit is connect with the anti-phase integrator, the filtered electrical
Road is used to becoming the rotation into pumping signal the target signal filter for being higher than predeterminated frequency；
The input terminal of the amplifying circuit is connect with the output end of the anti-phase integrator, and output end recommends electricity with described
Road connects, and the amplifying circuit and the push-pull circuit are used to be amplified rotation change pumping signal.
Above-mentioned rotation becomes pumping signal driving circuit, wherein the anti-phase integrator includes the first operational amplifier and one
Integrator, the integrator include first resistor and the first capacitance, the both ends of the first resistor respectively with the first-order filtering
Circuit is connected with the inverting input of first operational amplifier, and first capacitance is connected in first operation in parallel and puts
Between the inverting input and output end of big device.
Above-mentioned rotation becomes pumping signal driving circuit, wherein the anti-phase integrator further includes the first feedback resistance, described
First feedback resistance one end is connect with the output end of first operational amplifier, and the other end is connected to the first-order filtering circuit
Between the first resistor.
Above-mentioned rotation becomes pumping signal driving circuit, wherein the first-order filtering circuit include the second resistance being connected and
Second capacitance, second capacity earth, the output end of the second resistance are connect with the input terminal of the anti-phase integrator.
Above-mentioned rotation becomes pumping signal driving circuit, wherein and the amplifying circuit includes second operational amplifier, and described second
The inverting input of operational amplifier is connect with the output end of the anti-phase integrator, the same phase of the second operational amplifier
Input terminal connects a reference circuit.
Above-mentioned rotation becomes pumping signal driving circuit, wherein the reference circuit includes concatenated 3rd resistor and the 4th electricity
Resistance, and the third capacitance with the 4th resistor coupled in parallel, the 4th resistance and the third capacitance are grounded, and described second
The in-phase input end of operational amplifier is connected to the node between the 3rd resistor and the 4th resistance.
Above-mentioned rotation becomes pumping signal driving circuit, wherein further includes the second feedback resistance, second feedback resistance is in parallel
It is connected to the inverting input of the output end and the second operational amplifier of the push-pull circuit.
Above-mentioned rotation becomes pumping signal driving circuit, wherein the push-pull circuit includes and is connected to second operational amplifier
Output end and signal output end between first recommend module and second and recommend module, wherein
Described first to recommend module include sequentially connected first diode, the 6th resistance, the 7th resistance, the first triode
It is connect with the output end of the second operational amplifier with the cathode of the 8th resistance, first diode, the 7th resistance
A power supply VCC is connected, the first triode uses NPN type triode, the collector of the first triode to connect the power supply, and base stage connects
The node between the 6th resistance and the 7th resistance is connect, emitter is connect with the 8th resistance；
Described second to recommend module include sequentially connected second diode, the 9th resistance, the tenth resistance, the second triode
And eleventh resistor, the anode of second diode are connect with the output end of the second operational amplifier, the tenth electricity
Resistance ground connection, second triode use PNP type triode, the grounded collector of second triode, base stage to be connected to institute
The node between the 9th resistance and the tenth resistance is stated, emitter is connect with the eleventh resistor.
Above-mentioned rotation becomes pumping signal driving circuit, wherein further includes being connected to the anti-phase integrator and the amplification
Low-pass filter circuit between circuit, the low-pass filter circuit include the 5th resistance and the 4th capacitance being connected, and described
Four capacity earths.
By forming a step low-pass filter by first-order filtering circuit and anti-phase integrator in the utility model embodiment
Wave circuit filters out the high frequency waves that rotation becomes in pumping signal, while passing through the amplifying circuit of rear class and push-pull circuit enhancing letter
Number driving capability, can effectively drive rotary transformer secondary generate induced voltage.
Description of the drawings
Fig. 1 is the structural schematic diagram of the rotation change pumping signal driving circuit in the utility model first embodiment；
Fig. 2 is the structural schematic diagram of the rotation change pumping signal driving circuit in the utility model second embodiment.
Main element symbol description
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The utility model embodiment is given in attached drawing.But the utility model can be realized in many different forms, and
It is not limited to embodiment described herein.On the contrary, the purpose for providing the embodiment is the disclosure made to the utility model
It is more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein includes
Any and all combinations of one or more relevant Listed Items.
It please refers to Fig.1 and becomes pumping signal driving circuit for the rotation in the utility model first embodiment, which becomes excitation letter
The input terminal and output end of number driving circuit are respectively used to the controller of connection one signal input sources and motor.The signal input sources
The rotation of output becomes pumping signal after overwinding becomes the processing of pumping signal driving circuit in output to controller, and controller is according to processing
Rotation afterwards becomes the rotation angle of pumping signal control rotor.
It includes sequentially connected filter circuit 10, amplifying circuit 20 and push-pull circuit that the rotation, which becomes pumping signal driving circuit,
30.Wherein, which includes first-order filtering circuit 11 and anti-phase integrator 12.The input of the first-order filtering circuit 11
End becomes pumping signal for receiving rotation, and the output end of first-order filtering circuit 11 is connect with anti-phase integrator 12.
The first-order filtering circuit 11 is made of a resistance and capacitance, and first-order low-pass is carried out for becoming pumping signal to rotation
Wave, the pumping signal for ensureing low frequency normal through while by high frequency spurs target signal filter.
The input terminal of the anti-phase integrator 12 is connect with the output end of the first-order filtering circuit 11, anti-phase integrator 12
Output end connect with amplifying circuit 20.It is low with the composable second order of the anti-phase integrator 12 by first-order filtering circuit 11
Bandpass filter, so that low frequency signal can be normal through, and the high-frequency signal more than predeterminated frequency is then blocked, weakens.The filtering
Frequency response curve of the circuit in passband is very flat, does not rise and fall, and it is zero to be then gradually reduced in suppressed frequency band, is played very
Good low-pass filtering effect.
The anti-phase integrator 12 can be for example made up of an integrator and operational amplifier, which includes one connected
The resistance and capacitance connect, the capacitance are connected in parallel between the inverting input of operational amplifier and output end, and a reverse phase is consequently formed
Integrating circuit.
The input terminal of the amplifying circuit 20 is connect with the output end of anti-phase integrator 12, and output end connects with push-pull circuit 30
It connects.The amplifying circuit 20 is used to become pumping signal to the rotation that filter circuit 10 exports and be amplified, and meets intensity requirement with output
Signal.The push-pull circuit revolves the driving capability for becoming pumping signal with enhancing for further increasing electric current.
By forming a second-order low-pass filter circuit by first-order filtering circuit and anti-phase integrator in the present embodiment, with
The high frequency spurs that rotation becomes in pumping signal are filtered out, while enhancing the driving of signal by the amplifying circuit of rear class and push-pull circuit
Ability can effectively drive rotary transformer secondary to generate induced voltage.
Referring to Fig. 2, becoming pumping signal driving circuit for the rotation in the utility model second embodiment, including it is sequentially connected
Filter circuit 10, amplifying circuit and push-pull circuit.
The filter circuit 10 includes first-order filtering circuit and anti-phase integrator, and the input terminal of the first-order filtering circuit is used for
It receives rotation and becomes pumping signal, output end is connect with anti-phase integrator.
The first-order filtering circuit includes the second resistance R2 being connected and the second capacitance C2, a termination of second resistance R2
Enter rotation and become pumping signal EXC, the other end is connect with the second capacitance C2 and anti-phase integrator, another termination of second capacitance C2
Ground.A first-order filtering circuit is constituted by second resistance R2 and the second capacitance C2 to carry out to become pumping signal to the rotation of input
Filtering.
The anti-phase integrator includes the first operational amplifier U1 and an integrator.The integrator includes be connected in series with
The both ends of one resistance R1 and the first capacitance C1, first resistor the R1 reverse phase with second resistance R2 and the first operational amplifier U1 respectively
Input terminal connects, and the first capacitance C1 is connected in parallel between the inverting input and output end of the first operational amplifier U1.Pass through
The anti-phase integrator can become pumping signal to rotation and carry out secondary filtering, improve filtration efficiency.
The normal phase input end of first operational amplifier U1 accesses a reference voltage REF, which is, for example, 12V.
The normal phase input end of first operational amplifier U1 is also connected with a ground capacity C5, ground capacity C5 be used for reference voltage into
Row filtering.
Further, which further includes the first feedback resistance R12.One end of first feedback resistance R12
It is connect with the output end of the first operational amplifier U1, the other end is connected between first resistor R1 and second resistance R2.
Further, a low-pass filter circuit is also connected between anti-phase integrator and amplifying circuit.The low-pass filtering
Circuit includes one the 5th resistance R5 and the 4th capacitance C4, and one end of the 5th resistance R5 and the output end of the first operational amplifier U1 connect
It connects, the other end is connect with one end of the 4th capacitance C4, the other end ground connection of the 4th capacitance C4.
Second resistance R2, first resistor R1, the second capacitance C2, the first feedback resistance R12, the first capacitance C1, ground capacity
The prime operational amplifier circuit of C5, the first operational amplification circuit U1 compositions, effectively filter out low-frequency noise, 3dB cutoff frequencies of decaying
For：
When it is implemented, calculating cutoff frequency according to above-mentioned formula, the pumping signal filtered out higher than the cutoff frequency is made an uproar
Sound, and normal pumping signal can be retained without distortion.
It is found through practical debugging, this rotation change excitation driving circuit has filtered out rotation and become pumping signal noise well, and can base
This retains low-frequency excitation signal (such as normal pumping signal is 10KHz) without distortion.According to amplifier ' imaginary short ' and ' write out falsely
Road ' the characteristics of calculate the frequency response of the filter circuit, it can be found that frequency 10KHz or less basically no attenuation, and effectively
Filtered out high frequency spurs signal.
The input terminal of the amplifying circuit and the output end of anti-phase integrator connect, and output end is connect with push-pull circuit, should
Amplifying circuit is used to become after excitation is amplified the rotation that anti-phase integrator exports and export.The amplifying circuit includes the second operation
The output end of the inverting input of amplifier U2, second operational amplifier U2 and anti-phase integrator connects, it is specific this second
Node connection between operational amplifier U2 and the 5th resistance R5 and the 4th capacitance C4.The homophase input of second operational amplifier U2
One reference circuit of end connection.
The reference circuit includes the 3rd resistor R3 and the 4th resistance R4 being connected, and in parallel with the 4th resistance R4
Three capacitance C3, wherein third capacitance C3 are for being filtered the reference circuit.4th resistance R4 and third capacitance C3 are grounded,
The in-phase input end of second operational amplifier U2 is connected to the node between 3rd resistor R3 and the 4th resistance R4.Benchmark electricity
The input terminal on road accesses a voltage VCC, and being input to the second operation after 3rd resistor R3 and the 4th resistance R4 are divided puts
The in-phase input end of big device U2.
The push-pull circuit includes and what is be connected between second operational amplifier U2 and signal output end EXC OUT first pushes away
It draws module 31 and second and recommends module 32.First, which recommends module 31, includes the first diode D1, the 6th resistance R6, the 7th resistance
R7, the first triode Q1 and the 8th resistance R8.Wherein, the output end of the cathode and second operational amplifier U2 of the first diode D1
The anode of connection, the first diode D1 is connect with one end of the 6th resistance R6, the other end and the 7th resistance R7 of the 6th resistance R6
One end connection, the other end of the 7th resistance R7 connects a power supply VCC.First triode Q1 use NPN type triode, the one or three
The collector of pole pipe Q1 connects power supply VCC, and base stage connects the node between the 6th resistance R6 and the 7th resistance R7, emitter with
8th resistance R8 connections.
Second recommend module 32 include the second diode D2, the 9th resistance R9, the tenth resistance R10, the second triode Q2 and
Eleventh resistor R11.Wherein, the anode of the second diode D2 is connect with the output end of second operational amplifier U2, the two or two pole
The cathode of pipe D2 is connect with one end of the 9th resistance R9, and the other end of the 9th resistance R9 is connect with one end of the tenth resistance R10, the
The other end of ten resistance R10 is grounded.Second triode Q2 uses PNP type triode, the grounded collector of the second triode Q2, base
Pole is connected to the node between the 9th resistance R9 and the tenth resistance R10, and emitter is connect with eleventh resistor R11.
Further, it further includes the second feedback resistance R13 which, which becomes pumping signal driving circuit, and is connected on the 5th electricity
The resistance R14 between R5 and second operational amplifier U2 is hindered, second feedback resistance R13 is connected in the output of push-pull circuit in parallel
The inverting input at end and second operational amplifier U2.The effect of second feedback resistance R13 and the first feedback resistance R12 are identical,
It is to form negative-feedback, passes through the amplification factor of the ratio Regulate signal voltage of resistance R14 and the second feedback resistance R13.
Amplifying circuit and recommend resistance be used as rear class push-pull amplifier circuit, be mainly used to enhancing signal driving capability, and
Enough electric current driving rotary transformers are provided, rotary transformer secondary can effectively be driven to generate induced voltage.
The pumping signal of rotary transformer is filtered by filter circuit in the present embodiment, and by amplifying circuit and
The driving capability that push-pull circuit becomes rotation pumping signal is reinforced, and controller is made obviously to be carried in the precision for reading rotation angle value
It rises, improves the stability and reliability of product well.
The embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the utility model patent range therefore be interpreted as.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection domain of utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of rotation becomes pumping signal driving circuit, which is characterized in that including sequentially connected filter circuit, amplifying circuit and push away
Draw circuit, wherein
The filter circuit includes first-order filtering circuit and anti-phase integrator, and the input terminal of the first-order filtering circuit is for connecing
It receives rotation and becomes pumping signal, the output end of the first-order filtering circuit is connect with the anti-phase integrator, and the filter circuit is used
Become in pumping signal the target signal filter for being higher than predeterminated frequency in that described will revolve；
The input terminal of the amplifying circuit is connect with the output end of the anti-phase integrator, the output end of the amplifying circuit with
The push-pull circuit connection, the amplifying circuit and the push-pull circuit are used to be amplified rotation change pumping signal.
2. rotation as described in claim 1 becomes pumping signal driving circuit, which is characterized in that the anti-phase integrator includes the
One operational amplifier and an integrator, the integrator include first resistor and the first capacitance, the both ends point of the first resistor
It is not connect with the inverting input of the first-order filtering circuit and first operational amplifier, first capacitance is connected in parallel
Between the inverting input and output end of first operational amplifier.
3. rotation as claimed in claim 2 becomes pumping signal driving circuit, which is characterized in that the anti-phase integrator further includes
First feedback resistance, first feedback resistance one end are connect with the output end of first operational amplifier, other end connection
Between the first-order filtering circuit and the first resistor.
4. rotation as described in claim 1 becomes pumping signal driving circuit, which is characterized in that the first-order filtering circuit includes phase
The second resistance of connection and the second capacitance, second capacity earth, the output end of the second resistance are integrated with the reverse phase
The input terminal of circuit connects.
5. rotation as described in claim 1 becomes pumping signal driving circuit, which is characterized in that the amplifying circuit includes the second fortune
Amplifier is calculated, the inverting input of the second operational amplifier connect with the output end of the anti-phase integrator, and described the
The in-phase input end of two operational amplifiers connects a reference circuit.
6. rotation as claimed in claim 5 becomes pumping signal driving circuit, which is characterized in that the reference circuit includes concatenated
3rd resistor and the 4th resistance, and the third capacitance with the 4th resistor coupled in parallel, the 4th resistance and third electricity
Rong Jun is grounded, and the in-phase input end of the second operational amplifier is connected between the 3rd resistor and the 4th resistance
Node.
7. rotation as claimed in claim 5 becomes pumping signal driving circuit, which is characterized in that further include the second feedback resistance, institute
State the inverting input that the second feedback resistance is connected in the output end and the second operational amplifier of the push-pull circuit in parallel.
8. rotation as claimed in claim 5 becomes pumping signal driving circuit, which is characterized in that the push-pull circuit includes and connects
First between the output end and signal output end of second operational amplifier, which recommends module and second, recommends module, wherein
Described first to recommend module include sequentially connected first diode, the 6th resistance, the 7th resistance, the first triode and
The cathode of eight resistance, first diode is connect with the output end of the second operational amplifier, the 7th resistance connection
One power supply, the first triode use NPN type triode, and the collector of the first triode connects the power supply, described in base stage connection
Node between 6th resistance and the 7th resistance, emitter are connect with the 8th resistance；
Described second to recommend module include sequentially connected second diode, the 9th resistance, the tenth resistance, the second triode and
The anode of 11 resistance, second diode is connect with the output end of the second operational amplifier, and the tenth resistance connects
Ground, second triode use PNP type triode, the grounded collector of second triode, base stage to be connected to described the
Node between nine resistance and the tenth resistance, emitter are connect with the eleventh resistor.
9. rotation as described in claim 1 becomes pumping signal driving circuit, which is characterized in that further include being connected to the reverse phase product
Low-pass filter circuit between parallel circuit and the amplifying circuit, the low-pass filter circuit include the 5th resistance that is connected and
4th capacitance, the 4th capacity earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820285244.2U CN207850396U (en) | 2018-02-28 | 2018-02-28 | Rotation becomes pumping signal driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820285244.2U CN207850396U (en) | 2018-02-28 | 2018-02-28 | Rotation becomes pumping signal driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207850396U true CN207850396U (en) | 2018-09-11 |
Family
ID=63409942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820285244.2U Expired - Fee Related CN207850396U (en) | 2018-02-28 | 2018-02-28 | Rotation becomes pumping signal driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207850396U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639191A (en) * | 2018-12-29 | 2019-04-16 | 南京奥吉智能汽车技术研究院有限公司 | Motor position detection method and motor control method |
| CN112003481A (en) * | 2020-08-18 | 2020-11-27 | 中广核研究院有限公司北京分公司 | 4-20mA current isolation output circuit |
| CN112305281A (en) * | 2020-10-23 | 2021-02-02 | 北京盈拓润达电气科技有限公司 | Fault indicator test system and high-voltage power amplifying circuit thereof |
-
2018
- 2018-02-28 CN CN201820285244.2U patent/CN207850396U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109639191A (en) * | 2018-12-29 | 2019-04-16 | 南京奥吉智能汽车技术研究院有限公司 | Motor position detection method and motor control method |
| CN112003481A (en) * | 2020-08-18 | 2020-11-27 | 中广核研究院有限公司北京分公司 | 4-20mA current isolation output circuit |
| CN112305281A (en) * | 2020-10-23 | 2021-02-02 | 北京盈拓润达电气科技有限公司 | Fault indicator test system and high-voltage power amplifying circuit thereof |
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Granted publication date: 20180911 |