CN107797598A - A kind of negative impedance branch circuit for being used to realize vibration control - Google Patents
A kind of negative impedance branch circuit for being used to realize vibration control Download PDFInfo
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- CN107797598A CN107797598A CN201710927058.4A CN201710927058A CN107797598A CN 107797598 A CN107797598 A CN 107797598A CN 201710927058 A CN201710927058 A CN 201710927058A CN 107797598 A CN107797598 A CN 107797598A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/561—Voltage to current converters
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Abstract
It is a kind of to be used to realize the negative impedance branch circuit of vibration control, when for electromagnetism branch circuit when, the branch circuit is sequentially connected and formed by five magnet coil equivalent model, current-controlled voltage source, DSP parts, reverse adder and composite amplifier parts；The composite amplifier is mainly made up of operational amplifier, biasing circuit, common emitter Wallman voltage amplifier circuit, emitter follower, positive power supply, negative power supply and other electronic components；If changing magnet coil equivalent model into piezoelectric patches equivalent model, this circuit connecting relation is still set up；The present invention proposed by a specific electromagnetism branch circuit design needed for branch circuit design process it is noted that item, and then designed for the branch circuit under different situations from now on and propose some reference principles and design method；Designed branch circuit disclosure satisfy that requirement of the overall circuit to output voltage, output current and frequency bandwidth.
Description
Technical field
The present invention relates to a kind of negative impedance branch circuit, and in particular to a kind of negative impedance branch for being used to realize vibration control
Circuit (including piezoelectric shunt circuit and electromagnetism branch circuit), branch circuit involved in the present invention can export higher voltage
And electric current, and there is wider frequency band range, there is important application value in branch circuit vibration control field.
Technical background
Nuisance vibration brings serious influence to the production and living of people, so the research of vibration control technology just seems
It is particularly important.The principle of branch circuit vibration control technology is that caused mechanical energy in vibration is converted into electric energy and by external
Branch circuit is dissipated so as to realize a kind of technology of vibration control (including piezoelectric shunt circuit and electromagnetism branch circuit).
In vibration processes, piezoelectric element can turn into voltage source and electric capacity series model with equivalent；Electromagnetic component can turn into voltage with equivalent
The series model in source, resistance and inductance.For both the above model, to improve the conversion efficiency of electric energy needs to reduce in circuit
Total impedance, therefore design good negative impedance branch circuit and be just particularly important.
At present, it is relative on piezoelectric shunt circuit damping and the research of electromagnetism branch circuit damping vibration control technology
Extensively, the design principle for branch circuit there has also been certain understanding, but few specifically be designed on branch circuit
The introduction of method and points for attention.For a complete branch circuit, for taking electromagnetism branch circuit, including electricity
These parts of magnetic cell equivalent model, voltage input, DSP and power amplifier.These parts are not simply according to original
Reason is connected that can reaches particular requirement, it is necessary to be analyzed, and just circuit can be made to meet specific condition of work, so as to realize
The function of negative impedance.It is therefore proposed that a kind of specific method and points for attention of branch circuit design, in branch circuit vibration control
In have great significance.
The content of the invention
In order to overcome the above-mentioned problems of the prior art, it is used to realize vibration control it is an object of the invention to provide one kind
The negative impedance branch circuit of system, proposed by a specific electromagnetism branch circuit design needed for branch circuit design process
It is noted that item, and then propose some reference principles and design method for the branch circuit design under different situations from now on；
Designed branch circuit disclosure satisfy that requirement of the overall circuit to output voltage, output current and frequency bandwidth.
Technical scheme is as follows：
It is a kind of to be used to realize the negative impedance branch circuit of vibration control, by taking electromagnetism branch circuit as an example, the branch circuit by
Five magnet coil equivalent model A, current-controlled voltage source B, DSP part C, reverse adder D and composite amplifier E parts
It is sequentially connected composition.
The magnet coil equivalent model A is sequentially connected in series group by induced voltage sources V6, equivalent resistance R34 and equivalent inductance L1
Into.
The current-controlled voltage source B mainly includes operational amplifier U9, the first fixed value resistance R23, the second fixed value resistance
R28, the 3rd fixed value resistance R29, the 4th fixed value resistance R30, the first adjustable resistance R24, the first electric capacity C14, the second electric capacity C17,
First electrochemical capacitor C13, the second electrochemical capacitor C20, the first power supply V1 and the second power supply V2；First fixed value resistance
R23 one end is grounded, and the other end, which is connected with the first adjustable resistance R24 one end and together accesses the positive of operational amplifier U9, to be inputted
End 1, the one end of the first adjustable resistance R24 other end then with the second fixed value resistance R28 are connected；Second fixed value resistance R28's is another
One end is connected and is grounded with the 3rd fixed value resistance R29 one end, the 3rd fixed value resistance R29 other end then with the 4th fixed value resistance
R30 one end is connected and together accesses operational amplifier U9 negative input 2；The 4th fixed value resistance R30 other end and fortune
The output end 3 for calculating amplifier U9 is connected；Operational amplifier U9 positive feeder ear 4 one end with the first electric capacity C14, first successively
Electrochemical capacitor C13 anode is connected with the first power supply V1 anode, the first electric capacity C14 other end and the first electrochemical capacitor
C13 negative terminal is connected and is grounded；One end with the second electric capacity C17, the second electrolysis successively of operational amplifier U9 negative sense feeder ear 5
Electric capacity C20 negative terminal is connected with the second power supply V2 negative terminal, the second electric capacity C17 other end and the second electrochemical capacitor C20
Anode be connected and be grounded；The anode of first power supply V1 negative terminal and the second power supply V2 is together grounded.
The DSP parts C is mainly realized by Dspace systems.
The direction adder D mainly includes operational amplifier U7, the 5th fixed value resistance R5, the 6th fixed value resistance R6, the
Seven fixed value resistance R9, the 8th fixed value resistance R12, the 3rd electric capacity C5, the 4th electric capacity C9, the 3rd electrochemical capacitor C3, the 4th electrolysis electricity
Hold C11, the first power supply V1 and the second power supply V2；8th fixed value resistance R12 one end ground connection, other end access computing
Amplifier U7 negative input 7；5th fixed value resistance R5, the 6th fixed value resistance R6, the 7th fixed value resistance R9 one end together
Access operational amplifier U7 positive input 6；The phase of output end 8 of the 5th fixed value resistance R5 other end and operational amplifier U7
Even；Operational amplifier U7 positive feeder ear 9 one end with the 3rd electric capacity C5, the 3rd electrochemical capacitor C3 anode and first successively
Power supply V1 anode is connected, and the 3rd electric capacity C5 other end is connected and is grounded with the 3rd electrochemical capacitor C3 negative terminal；Computing
One end with the 4th electric capacity C9, the 4th electrochemical capacitor C11 negative terminal and the second power supply successively of amplifier U7 negative sense feeder ear 10
Power supply V2 negative terminal is connected, and the 4th electric capacity C9 other end is connected and is grounded with the 4th electrochemical capacitor C11 anode.
The composite amplifier E is mainly by operational amplifier F, biasing circuit G, common emitter Wallman voltage amplifier circuit
H, emitter follower I, positive power supply J, negative power supply K and other electronic components composition.
The operational amplifier F includes operational amplifier U8, the 9th fixed value resistance R10, the tenth fixed value resistance R13, the 5th
Electric capacity C6, the 6th electric capacity C10, the 5th electrochemical capacitor C4, the 6th electrochemical capacitor C12, the power supply electricity of the first power supply V1 and second
Source V2；Tenth fixed value resistance R13 one end is grounded, other end access operational amplifier U8 negative input 12；9th definite value electricity
Hinder R10 one end access operational amplifier U8 positive input 11；Operational amplifier U8 positive feeder ear 14 is successively with
The anode of five electric capacity C6 one end, the 5th electrochemical capacitor C4 anode and the first power supply V1 is connected, and the 5th electric capacity C6's is another
One end is connected and is grounded with the 5th electrochemical capacitor C4 negative terminal；Operational amplifier U8 negative sense feeder ear 15 successively with the 6th electric capacity
The negative terminal of C10 one end, the 6th electrochemical capacitor C12 negative terminal and the second power supply V2 is connected, the 6th electric capacity C10 other end
It is connected and is grounded with the 6th electrochemical capacitor C12 anode.
The biasing circuit G includes the first triode Q6, the tenth certain value resistance R14, the 12nd fixed value resistance R20 and the
Two adjustable resistance R15；First triode Q6 colelctor electrode is connected with the tenth certain value resistance R14 one end；Tenth certain value electricity
The resistance R14 other end is connected with the second adjustable resistance R15 one end；The second adjustable resistance R15 other end is respectively with the 12nd
Fixed value resistance R20 one end and the first triode Q6 base stage are connected；The 12nd fixed value resistance R20 other end and the one or three
Pole pipe Q6 emitter stage is connected.
The common emitter Wallman voltage amplifier circuit H includes the second triode Q1, the 3rd triode Q2, the 4th triode
Q10, the 5th triode Q11, the 13rd fixed value resistance R2, the 14th fixed value resistance R3, the 15th fixed value resistance R4, the 16th are determined
It is worth resistance R7, the 17th fixed value resistance R18, the 18th fixed value resistance R25, the 19th fixed value resistance R31, the 20th fixed value resistance
R32, the 20th certain value resistance R33, the 7th electric capacity C7, the 8th electric capacity C15, the 7th electrochemical capacitor C8 and the 8th electrochemical capacitor
C16；13rd fixed value resistance R2 one end is connected with the 16th fixed value resistance R7 one end and together with second transistor Q1's
Base stage is connected；The 16th fixed value resistance R7 other end is connected with the 18th fixed value resistance R25 one end, the 18th fixed value resistance
The R25 other end is then connected with the 19th fixed value resistance R31 one end and together the base stage with the 5th triode Q11 is connected；The
14 fixed value resistance R3 one end is connected with the second triode Q1 emitter stage, the second triode Q1 colelctor electrode and the three or three pole
Pipe Q2 emitter stage is connected, and the 3rd triode Q2 colelctor electrode is connected with the colelctor electrode of the first triode Q6 in biasing resistor G,
First triode Q6 emitter stage is connected with the 4th triode Q10 colelctor electrode, the 4th triode Q10 emitter stage and the five or three
Pole pipe Q11 colelctor electrode is connected, and the 5th triode Q11 emitter stage is connected with the 20th certain value resistance R33 one end；Tenth
Five fixed value resistance R4 one end be connected with the 17th fixed value resistance R18 one end and together access the 3rd triode Q2 base stage,
The 7th electric capacity C7 one end and the 7th electrochemical capacitor C8 anode are connected on the circuit accessed herein respectively, wherein the 7th electric capacity C7 is more
Close to the 3rd triode Q2 base stage, and the negative terminal of the 7th electric capacity the C7 other end and the 7th electrochemical capacitor C8 is together grounded；
The 17th fixed value resistance R18 other ends are connected with the 20th fixed value resistance R32 one end and together access the 4th triode Q10's
Base stage, the 8th electric capacity C15 one end and the 8th electrochemical capacitor C16 negative terminal is connected respectively on the circuit accessed herein, wherein the 8th
Electric capacity C15 closer to the 4th triode Q10 base stage, and by the 8th electric capacity C15 other end and the 8th electrochemical capacitor C16 just
End is together grounded.
The emitter follower I includes the 6th triode Q3, the 7th triode Q4, the 8th triode Q5, the 9th triode
Q7, the tenth triode Q8, the 11st triode Q9, the 22nd fixed value resistance R8, the 23rd fixed value resistance R11, the 20th
Four fixed value resistance R16, the 25th fixed value resistance R17, the 26th fixed value resistance R19, the 27th fixed value resistance R21,
28 fixed value resistance R22, the 29th fixed value resistance R26 and the 30th fixed value resistance R27；6th triode Q3 base stage with
The colelctor electrode of the 3rd triode Q2 in common emitter Wallman voltage amplifier circuit H is connected, compared to the 11st in biasing circuit G
Fixed value resistance R14, connection between them closer to；6th triode Q3 emitter stage then respectively with the 22nd fixed value resistance
R8, the 23rd fixed value resistance R11 and the 26th definite value R19 one end are connected；The 26th fixed value resistance R19 other end
Respectively with the 29th fixed value resistance R26, the 30th fixed value resistance R27 one end and the 9th triode Q7 emitter stage phase
Even；9th triode Q7 base stage and the colelctor electrode phase of the 4th triode Q10 in common emitter Wallman voltage amplifier circuit H
Even, compared to the 12nd fixed value resistance R20 in biasing circuit G, connection between them closer to；23rd fixed value resistance
The R11 other end is connected with the 7th triode Q4 base stage, the 7th triode Q4 emitter stage and the 24th fixed value resistance R16
One end be connected；The 24th fixed value resistance R16 other end is connected with the 27th fixed value resistance R21 one end, and the 20th
The seven fixed value resistance R21 other end is connected with the 13rd triode Q8 emitter stage；13rd triode Q8 base stage and second
The 19 fixed value resistance R26 other end is connected；The base stage phase of 22nd fixed value resistance the R8 other end and the 8th triode Q5
Even, the 8th triode Q5 emitter stage is connected with the 25th fixed value resistance R17 one end；25th fixed value resistance R17's
The other end is connected with the 28th fixed value resistance R22 one end, the two or the two ten eight fixed value resistance R22 other end and the 11st
Pole pipe Q9 emitter stage is connected；11st triode Q9 base stage is connected with the 30th fixed value resistance R27 other end；20th
Four fixed value resistance R16 and the 27th fixed value resistance R21 common port is connected with the 25th fixed value resistance R17.
The positive power supply J includes positive supply VCC, the 9th electric capacity C1 and the 9th electrochemical capacitor C2；9th electric capacity C1's
One end and the 9th electrochemical capacitor C2 anode are connected in parallel on positive supply VCC；The 9th electric capacity C1 other end and the 9th electrochemical capacitor
C2 negative terminal is together grounded.
The negative power supply K includes negative supply VEE, the tenth electric capacity C18 and the tenth electrochemical capacitor C19；Tenth electric capacity C18
One end and the tenth electrochemical capacitor C19 negative terminal be connected in parallel on negative supply VEE；The tenth electric capacity C18 other end and the tenth electrolysis
Electric capacity C19 anode is together grounded.
In the composite amplifier E, the output end 13 and common emitter of the operational amplifier U8 in operational amplifier F parts
The common port of the 16th fixed value resistance R7 and the 18th fixed value resistance R25 in Wallman voltage amplifier circuit H are connected；Common emitter
The 13rd fixed value resistance R2, the 14th fixed value resistance R3's and the 15th fixed value resistance R4 in Wallman voltage amplifier circuit H
Not connected end is connected with the 6th triode Q3, the 7th triode Q4 in emitter follower I and the 8th triode Q5 colelctor electrode
After tap into positive supply VCC；19th fixed value resistance R31, the 20th fixed value resistance in common emitter Wallman voltage amplifier circuit H
In R32 and the 20th certain value resistance R33 not connected end and emitter follower I the 9th triode Q7, the tenth triode Q8 and
11st triode Q9 colelctor electrode taps into negative power supply K negative supply VEE after being connected；The one of 30th certain value resistance R1
End is connected with the positive input 11 of the operational amplifier U8 in operational amplifier F parts, and the 30th certain value resistance R1's is another
One end and the 24th fixed value resistance R16, the 25th fixed value resistance R17, the 27th fixed value resistance R21 and the 27th are fixed
Value resistance R22 common port is connected.
The overall annexation of the negative impedance branch circuit：One end and current control electricity in magnet coil equivalent model A
The common port 16 of the first adjustable resistance R24 and the second fixed value resistance R28 in potential source B are connected, and this common port 16 is again with reversely adding
The not connected end of the 7th fixed value resistance R9 in musical instruments used in a Buddhist or Taoist mass D is connected；The output end of operational amplifier U9 in current-controlled voltage source B
3 access DSP part C one end, the not connected end phase of the DSP parts C other end and the 6th fixed value resistance R6 in reverse adder D
Even；The 9th fixed value resistance R10 in the output end 8 and composite amplifier E of operational amplifier U7 in reverse adder D is not
Connection end is connected；The other end in magnet coil equivalent model A and the 30th certain value resistance R1 in composite amplifier E,
24th fixed value resistance R16, the 25th fixed value resistance R17, the 27th fixed value resistance R21 and the 27th fixed value resistance
R22 common port is connected.
The negative impedance branch circuit is a complete closed-loop path.
If changing magnet coil equivalent model A into piezoelectric patches equivalent models, this circuit connecting relation is still set up.
The present invention compared with prior art, has the following advantages that：Magnet coil or piezoelectricity in vibration are taken into full account
The specific scope of voltage caused by piece, design meet the branch circuit for being capable of normal work of condition.General general power
Amplifier can not meet the requirement to output voltage and output current, and special amplifier is relatively bulky, be unfavorable for actual answer
With.The output characteristics that circuit is improved by the way of amplifier and triode are used in conjunction with is a kind of feasible method, the former
Two stable input ports are provided using accurate amplifier, the latter realizes the big electricity of high pressure using the high pressure resistant property of triode
The output of stream.Composite amplifier E is specially utilized, front end is a simple calculations amplifier, can be circuit below
Two stable inputs are provided；By common emitter Wallman voltage amplifier circuit H, can extend while voltage amplification
The frequency characteristic of high-frequency range；The outflow electric current of circuit can be amplified through emitter follower I again.Therefore, utilization is compound
Amplifying circuit E, it can both increase output voltage and output current, can be with extended high frequency scope, can be by the institute of branch circuit
It is functional to concentrate on one piece of circuit board, it is easy to actual application.
Therefore, in practical application, the control principle of the branch circuit can be expressed as (controlling with the vibration isolation of electromagnetism branch circuit and being
Example)：With electromagnetic transducer linker seat and the object for needing vibration isolation, when seat vibration, electromagnetic transducer also and then shakes up and down
Dynamic, now coil just does a range of induced electromotive force of motion generation of cutting magnetic induction line in magnetic field；By designed point
Branch circuit is connected to form closed-loop path with coil and just generates induced-current；Understand that coil is generated and moved by Ampere theorem
Ampere force in opposite direction, the power is exactly the damping force in object of which movement, therefore the vibration of object is suppressed.Because this point
The purpose of branch circuit is to produce negative impedance, so as to reduce the total impedance in circuit, the total current in increasing circuit, and then increase peace
Train power and improve control effect.So branch circuit can normal work and produce the key that specific negative impedance is vibration control.
The branch circuit of the design can overcome the output voltage current limited problem of simple waybill amplifier within the specific limits, realize
The normal work of negative impedance circuit.
Brief description of the drawings
Fig. 1 is the overall design drawing of the present invention.
Fig. 2 is the partial enlargement design drawing of the present invention.
Fig. 3 is the schematic diagram of the present invention.
Fig. 4 is the performance map of the present invention.
Embodiment
The structural principle and operation principle of the present invention are described in further detail below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of negative impedance branch circuit for being used to realize vibration control of the present invention, by the equivalent mould of magnet coil
Type A, current-controlled voltage source B, DSP part C, reverse adder D and composite amplifier E are formed by connecting.Wherein magnet coil
Equivalent model A, exist in practice not in the form of circuit as shown in Figure 1, it is that coil vibrates cutting magnetic induction in magnetic field
Line produces induced electromotive force, for the ease of the equivalent circuit model out of circuit analysis.Similarly for piezoelectric patches, it also may be used
Turn into piezoelectric equivalent circuit model with equivalent.Current-controlled voltage source B can be divided into two parts, and Part I is as shown in Figure 1
For the second fixed value resistance R28, its one end connection magnet coil equivalent model A, other end ground connection, it is assumed that by the equivalent mould of magnet coil
The electric current of type A outflows is i, then the voltage at label 16 as shown in Figure 1 is then iR28；Part II is operation amplifier as shown in Figure 1
Device U9, the first fixed value resistance R23, the 3rd fixed value resistance R29, the 4th fixed value resistance R30, the first adjustable resistance R24 and some
Power necessary electric capacity.The connected mode of the part forms an amplifier in the same direction, and its multiplication factor is 1/R28；The company of electric capacity
Mode is connect as shown in figure 1, wherein the first electric capacity C14 and the second electric capacity C17 should be respectively close proximity to operational amplifier U9 pipe
Pin 4 and pin 5, pay attention to the polarity of the first electrochemical capacitor C13 and the second electrochemical capacitor C20 connections.Therefore, current-controlled voltage source
B final output voltage is i, and its value is identical with flowing through the current value size of coil, direction.DSP parts C is mainly utilized
Dspace systems provide a digital resistance value, are conveniently adjusted controllable.The voltage exported behind the part is iRs, wherein Rs
For the resistance size of negative resistance.Reverse adder D by operational amplifier U7, the 5th fixed value resistance R5, the 6th as shown in figure 1, determined
It is worth resistance R6, the 7th fixed value resistance R9, the 8th fixed value resistance R12 and some necessary electric capacity compositions of powering.Operational amplifier U7
Negative input 7 be connected with the 8th fixed value resistance R12 one end, the 8th fixed value resistance R12 other end ground connection；Operation amplifier
Device U7 positive input 6 one end phase with the 5th fixed value resistance R5, the 6th fixed value resistance R6 and the 7th fixed value resistance R9 respectively
Even, the 5th fixed value resistance R5 other end is connected with operational amplifier U7 output end 8, the 6th fixed value resistance R6 other end and
DSP parts C output end is connected, and the 7th fixed value resistance R9 other end is connected at label 16 as shown in Figure 1；Capacitor
Connected mode and above-mentioned identical.The reverse adder D can be by the voltage iR at label 1628With the output voltage through DSP parts C
iRsIt is added, is finally-R in the operational amplifier U7 output voltage of output end 85/R6(R9)×(iR28+iRs)。
As shown in Fig. 2 in the present invention composite amplifier E partial enlarged drawing.Composite amplifier E includes operation amplifier
Device F, biasing circuit G, common emitter Wallman voltage amplifier circuit H, emitter follower I, positive power supply J, bear power supply K and
Other necessary electronic components.All in all, composite amplifier E is actually that a power with voltage and current amplification is put
Big device, its overall multiplication factor depend on the 9th fixed value resistance R10 and the 30th certain value resistance R1 value, overall amplification
Multiple is-R1/R10.From the point of view of specific, operational amplifier F is a simple calculations amplifier, and its output voltage has certain
Limitation, the general requirement of negative resistance branch circuit can not be met, but it has two highly stable input ports, this is
It is utilizable；Amplification for output voltage, can supply voltage be higher is total in operational amplifier U8 rear class connection
Emitter-base bandgap grading Wallman voltage amplifier circuit H, is thus amplified to operational amplifier U8 output voltage and produces bigger output
Voltage；Then Current amplifier is being carried out by connecting emitter follower I in common emitter Wallman voltage amplifier circuit H rear classes.It is logical
When crossing the composite amplifier E of the connection of the above and just disclosure satisfy that vibration control, voltage caused by magnet coil is to negative impedance point
The requirement of branch circuit.
As shown in Fig. 2 the annexation of each several part circuit and effect are as follows.Common emitter Wallman voltage amplifier circuit H master
To be formed by connecting by the second triode Q1, the 3rd triode Q2, the 4th triode Q10 and the 5th triode Q11, the second triode
Q1, the 3rd triode Q2 are positive-negative-positive pipe, and the 4th triode Q10, the 5th triode Q11 are NPN type pipe, before connection will to this two
The transistor of type is matched.Second triode Q1 colelctor electrode is connected with the 3rd triode Q2 emitter stage, and the five or three
Pole pipe Q11 colelctor electrode is connected with the 4th triode Q10 emitter stage, the 3rd triode Q2 base stage and the 4th triode Q10
Base stage respectively by the 7th electric capacity C7, the 7th electrochemical capacitor C8 and the 8th electric capacity C15, the 8th electrochemical capacitor C16 AC earths,
This just constitutes wallman circuit, and the circuit while input impedance is not reduced, can improve the frequency characteristic of amplifying circuit.
15th fixed value resistance R4, the 17th fixed value resistance R18 and the 20th fixed value resistance R32 are connected in the 3rd triode Q2 and the four or three
The purpose of pole pipe Q10 base stage is to ensure triode operation in conducting state and flow through the electric current satisfaction requirement of base stage；Together
Manage the 13rd fixed value resistance R2, the 16th fixed value resistance R7, the 18th fixed value resistance R25 and the 19th fixed value resistance R31 mesh
It is identical.As shown in Fig. 2 biasing circuit G is connected on the both ends of the 6th triode Q3 and the 9th triode Q7 base stages, mainly including
One triode Q6, the tenth certain value resistance R14, the 12nd fixed value resistance R20 and the second adjustable resistance R15.12nd definite value electricity
Resistance R20 purpose is to ensure that the voltage difference under DC state between the first triode Q6 base stages and emitter stage is 0.6V or so,
Ensure that the voltage difference between the first triode Q6 colelctor electrodes and base stage is 1.8V or so by adjusting the second adjustable resistance R15, lead to
Cross the biasing circuit can prevent follow-up transistor because quiescent current is excessive cause thermal breakdown the problem of.As shown in Fig. 2 penetrate
Pole follower I is connected on common emitter Wo Er and overflows voltage amplifier circuit H output end, and is connected as shown in Figure 2 with biasing circuit G.Penetrate
Pole follower I includes the 6th triode Q3, the 7th triode Q4, the 8th triode Q5, the 9th triode Q7, the 13rd triode
Q8 and the 11st triode Q9, the 22nd fixed value resistance R8, the 23rd fixed value resistance R11, the 24th fixed value resistance
R16, the 25th fixed value resistance R17, the 26th definite value R19, the 27th fixed value resistance R21, the 28th fixed value resistance
R22, the 29th fixed value resistance R26 and the 30th fixed value resistance R27.6th triode Q3, the 7th triode Q4, the eight or three pole
Pipe Q5 is NPN type pipe, and the 9th triode Q7, the tenth triode Q8 and the 11st triode Q9 are positive-negative-positive pipes, wherein the six or three pole
Pipe Q3 and the 9th triode Q7 is matched pair transistor, the 7th triode Q4 and the 13rd triode Q8 respectively with the 8th triode Q5 and
11 triode Q9 are matched pair transistors.26th fixed value resistance R19 both ends are connected to the 6th triode Q3 and the 9th triode Q7
Emitting stage, it can ensure under quiescent current, and the voltage for ensureing resistance both ends is 1.2V or so, ensure the 7th triode Q4,
8th triode Q5, the tenth triode Q8 and the 11st triode Q9 base stage and colelctor electrode normal operating conditions；Such as Fig. 2 institutes
Show, the fixed value resistance R8 of base stage the 22nd, the 23rd fixed value resistance R11, the 29th fixed value resistance R26 and the 30th definite value
Resistance R27 is for preventing upper and lower two groups of triode current imbalances；The fixed value resistance of emitter stage the 24th shown in Fig. 2
R16, the 25th fixed value resistance R17, the 27th fixed value resistance R21 and the 28th fixed value resistance R22 values are identical, can be with
Protection transistor damage caused by current convergence etc., resistance will have larger power at this.As shown in Figure 2 is positive and negative
Power supply J, K.The 9th electric capacity C1, the tenth electric capacity C18 and the 9th electrochemical capacitor C2, the tenth electrochemical capacitor C19 work thereon
With being to reduce source impedance, prevention is vibrated.
The operation principle of the present invention is as follows：A kind of as shown in figure 3, negative impedance branch for being used to realize vibration control of the present invention
Circuit design principle figure.Equivalent-circuit model when coil vibrates is as shown in A in Fig. 3, when similarly vibrating bending for piezoelectric patches
Its equivalent-circuit model is as shown in Fig. 3 dotted lines coupling part.It is false when branch circuit works by taking electromagnetism branch circuit as an example
If the electric current for flowing through coil is i.Due to " void is disconnected " property of amplifier amplifier, therefore foreign current does not flow into amplifier, therefore such as
In Fig. 3 shown in B, electric current i all flows into earth terminal by resistance Ro, so the voltage on resistance Ro is iRo.By multiplication factor
After 1/Ro amplifier amplifier, its output voltage is i, and here it is the operation principle of current-controlled voltage source.By dsp system
Output voltage is changed into iRs after C, then output voltage was changed into-i (Ro+Rs) Rf/R1 after entering reverse adder D, then by compound
Output voltage is changed into i (Ro+Rs) after amplifying circuit.It was found from above-mentioned analysis, when the voltage iRo at resistance Ro ends passes through such as Fig. 3 institutes
The B shown, C, D, behind E parts, voltage increases iRs, so the circuit realiration function of negative resistance, the value of negative resistance are
The numerical value Rs that dsp system provides.So, if DSP offers are not simple proportionals, and it there is provided integral term or micro-
During subitem, it is possible to negative capacitance or negative inductance are formed respectively, so branch circuit can realize the function of negative impedance.
As shown in figure 4, for the performance map of the present invention, the performance map is that the induced electromotive force of magnet coil is that crest voltage is
3V, frequency during 50Hz by doing.As can be seen from the figure：The voltage of each key point of the circuit is normal sinusoidal electricity
Press and frequency is all 50Hz (skew for ignoring the incipient stage).Therefore, each circuit amplifier section is all at work for the branch circuit
The condition of normal work is met, so as to produce specific negative impedance.Understand that negative resistance in this case is big by calculating
Small is 26.1 Ω.
Claims (3)
- A kind of 1. negative impedance branch circuit for being used to realize vibration control, it is characterised in that：When for electromagnetism branch circuit when, this point Branch circuit is by magnet coil equivalent model (A), current-controlled voltage source (B), DSP parts (C), reverse adder (D) and compound Five parts of amplifying circuit (E) are sequentially connected composition；The magnet coil equivalent model (A) is gone here and there successively by induced voltage sources (V6), equivalent resistance (R34) and equivalent inductance (L1) Connection composition；The current-controlled voltage source (B) mainly includes operational amplifier (U9), the first fixed value resistance (R23), the second definite value electricity Hinder (R28), the 3rd fixed value resistance (R29), the 4th fixed value resistance (R30), the first adjustable resistance (R24), the first electric capacity (C14), Second electric capacity (C17), the first electrochemical capacitor (C13), the second electrochemical capacitor (C20), the first power supply (V1) and the second power supply Power supply (V2)；First fixed value resistance (R23) one end is grounded, and the other end is connected and together with one end of the first adjustable resistance (R24) Access the positive input (1) of operational amplifier (U9), the other end of the first adjustable resistance (R24) then with the second fixed value resistance (R28) one end is connected；The other end of second fixed value resistance (R28) is connected and is grounded with one end of the 3rd fixed value resistance (R29), The other end of 3rd fixed value resistance (R29) is then connected with one end of the 4th fixed value resistance (R30) and together accesses operational amplifier (U9) negative input (2)；The other end of 4th fixed value resistance (R30) is connected with the output end (3) of operational amplifier (U9)； One end with the first electric capacity (C14), the first electrochemical capacitor (C13) be just successively for the positive feeder ear (4) of operational amplifier (U9) End is connected with the anode of the first power supply (V1), the other end of the first electric capacity (C14) and the negative terminal of the first electrochemical capacitor (C13) It is connected and is grounded；One end with the second electric capacity (C17), the second electrolysis are electric successively for the negative sense feeder ear (5) of operational amplifier (U9) The negative terminal for holding (C20) is connected with the negative terminal of the second power supply (V2), the other end and the second electrochemical capacitor of the second electric capacity (C17) (C20) anode is connected and is grounded；The anode of the negative terminal of first power supply (V1) and the second power supply (V2) is together grounded；The DSP parts (C) are mainly realized by Dspace systems；The direction adder (D) mainly includes operational amplifier (U7), the 5th fixed value resistance (R5), the 6th fixed value resistance (R6), the 7th fixed value resistance (R9), the 8th fixed value resistance (R12), the 3rd electric capacity (C5), the 4th electric capacity (C9), the 3rd electrolysis electricity Hold (C3), the 4th electrochemical capacitor (C11), the first power supply (V1) and the second power supply (V2)；8th fixed value resistance (R12) One end ground connection, the other end access operational amplifier (U7) negative input (7)；5th fixed value resistance (R5), the 6th definite value Resistance (R6), one end of the 7th fixed value resistance (R9) together access operational amplifier (U7) positive input (6)；5th definite value The other end of resistance (R5) is connected with the output end (8) of operational amplifier (U7)；The positive feeder ear (9) of operational amplifier (U7) One end with the 3rd electric capacity (C5), the anode of the 3rd electrochemical capacitor (C3) and the anode of the first power supply (V1) are connected successively, The other end of 3rd electric capacity (C5) is connected and is grounded with the negative terminal of the 3rd electrochemical capacitor (C3)；The negative sense of operational amplifier (U7) supplies Electric end (10) one end with the 4th electric capacity (C9), the negative terminal of the 4th electrochemical capacitor (C11) and the second power supply (V2) successively Negative terminal is connected, and the other end of the 4th electric capacity (C9) is connected and is grounded with the anode of the 4th electrochemical capacitor (C11)；The composite amplifier (E) is mainly by operational amplifier (F), biasing circuit (G), common emitter Wallman voltage amplification electricity Road (H), emitter follower (I), positive power supply (J) and negative power supply (K) composition；The operational amplifier (F) include operational amplifier (U8), the 9th fixed value resistance (R10), the tenth fixed value resistance (R13), 5th electric capacity (C6), the 6th electric capacity (C10), the 5th electrochemical capacitor (C4), the 6th electrochemical capacitor (C12), the first power supply And the second power supply (V2) (V1)；Tenth fixed value resistance (R13) one end is grounded, and other end access operational amplifier (U8) is born To input (12)；The positive input (11) of one end access operational amplifier (U8) of 9th fixed value resistance (R10)；Computing is put The positive feeder ear (14) of big device (U8) one end with the 5th electric capacity (C6), the anode and first of the 5th electrochemical capacitor (C4) successively The anode of power supply (V1) is connected, and the other end of the 5th electric capacity (C6) is connected and connect with the negative terminal of the 5th electrochemical capacitor (C4) Ground；The negative sense feeder ear (15) of operational amplifier (U8) one end with the 6th electric capacity (C10), the 6th electrochemical capacitor (C12) successively Negative terminal and the negative terminal of the second power supply (V2) be connected, the other end of the 6th electric capacity (C10) and the 6th electrochemical capacitor (C12) Anode is connected and is grounded；The biasing circuit (G) includes the first triode (Q6), the tenth certain value resistance (R14), the 12nd fixed value resistance (R20) With the second adjustable resistance (R15)；The colelctor electrode of first triode (Q6) is connected with one end of the tenth certain value resistance (R14)；The The other end of ten certain value resistance (R14) is connected with one end of the second adjustable resistance (R15)；Second adjustable resistance (R15) it is another One end is connected with one end of the 12nd fixed value resistance (R20) and the base stage of the first triode (Q6) respectively；12nd definite value electricity The other end of resistance (R20) is connected with the emitter stage of the first triode (Q6)；The common emitter Wallman voltage amplifier circuit (H) includes the second triode (Q1), the 3rd triode (Q2), the four or three pole Manage (Q10), the 5th triode (Q11), the 13rd fixed value resistance (R2), the 14th fixed value resistance (R3), the 15th fixed value resistance (R4), the 16th fixed value resistance (R7), the 17th fixed value resistance (R18), the 18th fixed value resistance (R25), the 19th definite value electricity Hinder (R31), the 20th fixed value resistance (R32), the 20th certain value resistance (R33), the 7th electric capacity (C7), the 8th electric capacity (C15), 7th electrochemical capacitor (C8) and the 8th electrochemical capacitor (C16)；One end of 13rd fixed value resistance (R2) and the 16th fixed value resistance (R7) one end is connected and together the base stage with second transistor (Q1) is connected；The other end of 16th fixed value resistance (R7) and One end of 18 fixed value resistances (R25) is connected, the other end of the 18th fixed value resistance (R25) then with the 19th fixed value resistance (R31) one end is connected and together the base stage with the 5th triode (Q11) is connected；One end of 14th fixed value resistance (R3) and the The emitter stage of two triodes (Q1) is connected, and the colelctor electrode of the second triode (Q1) is connected with the emitter stage of the 3rd triode (Q2), The colelctor electrode of 3rd triode (Q2) is connected with the colelctor electrode of the first triode (Q6) in biasing resistor (G), the first triode (Q6) emitter stage is connected with the colelctor electrode of the 4th triode (Q10), the emitter stage and the 5th triode of the 4th triode (Q10) (Q11) colelctor electrode is connected, and the emitter stage of the 5th triode (Q11) is connected with one end of the 20th certain value resistance (R33)；The One end of 15 fixed value resistances (R4) be connected with one end of the 17th fixed value resistance (R18) and together access the 3rd triode (Q2) Base stage, the anode of the 7th electric capacity (C7) one end and the 7th electrochemical capacitor (C8) is connected on the circuit accessed herein respectively, wherein 7th electric capacity (C7) closer to the 3rd triode (Q2) base stage, and by the other end and the 7th electrochemical capacitor of the 7th electric capacity (C7) (C8) negative terminal is together grounded；17th fixed value resistance (R18) other end is connected simultaneously with one end of the 20th fixed value resistance (R32) The base stage of the 4th triode (Q10) is together accessed, the 8th electric capacity (C15) one end and the 8th are connected respectively on the circuit accessed herein The negative terminal of electrochemical capacitor (C16), wherein base stage of the 8th electric capacity (C15) closer to the 4th triode (Q10), and by the 8th electric capacity (C15) anode of the other end and the 8th electrochemical capacitor (C16) is together grounded；The emitter follower (I) includes the 6th triode (Q3), the 7th triode (Q4), the 8th triode (Q5), the 9th 3 Pole pipe (Q7), the tenth triode (Q8), the 11st triode (Q9), the 22nd fixed value resistance (R8), the 23rd definite value electricity Hinder (R11), the 24th fixed value resistance (R16), the 25th fixed value resistance (R17), the 26th fixed value resistance (R19), the 27 fixed value resistances (R21), the 28th fixed value resistance (R22), the 29th fixed value resistance (R26) and the 30th definite value electricity Hinder (R27)；The base stage of 6th triode (Q3) and the 3rd triode (Q2) in common emitter Wallman voltage amplifier circuit (H) Colelctor electrode is connected, compared to the tenth certain value resistance (R14) in biasing circuit (G), connection between them closer to；Six or three The emitter stage of pole pipe (Q3) then respectively with the 22nd fixed value resistance (R8), the 23rd fixed value resistance (R11) and the 26th One end of definite value (R19) is connected；The other end of 26th fixed value resistance (R19) respectively with the 29th fixed value resistance (R26), One end of 30th fixed value resistance (R27) and the emitter stage of the 9th triode (Q7) are connected；The base stage of 9th triode (Q7) It is connected with the colelctor electrode of the 4th triode (Q10) in common emitter Wallman voltage amplifier circuit (H), compared to biasing circuit (G) In the 12nd fixed value resistance (R20), connection between them closer to；The other end of 23rd fixed value resistance (R11) with The base stage of 7th triode (Q4) is connected, the emitter stage of the 7th triode (Q4) and one end of the 24th fixed value resistance (R16) It is connected；The other end of 24th fixed value resistance (R16) is connected with one end of the 27th fixed value resistance (R21), and the 27th The other end of fixed value resistance (R21) is connected with the emitter stage of the 13rd triode (Q8)；The base stage of 13rd triode (Q8) with The other end of 29th fixed value resistance (R26) is connected；The other end and the 8th triode of 22nd fixed value resistance (R8) (Q5) base stage is connected, and the emitter stage of the 8th triode (Q5) is connected with one end of the 25th fixed value resistance (R17)；20th The other end of five fixed value resistances (R17) is connected with one end of the 28th fixed value resistance (R22), the two or two ten eight fixed value resistance (R22) the other end is connected with the emitter stage of the 11st triode (Q9)；The base stage of 11st triode (Q9) is fixed with the 30th The other end of value resistance (R27) is connected；The common port of 24th fixed value resistance (R16) and the 27th fixed value resistance (R21) It is connected with the 25th fixed value resistance (R17)；The positive power supply (J) includes positive supply (VCC), the 9th electric capacity (C1) and the 9th electrochemical capacitor (C2)；9th electric capacity (C1) one end and the anode of the 9th electrochemical capacitor (C2) is connected in parallel on positive supply (VCC)；The other end of 9th electric capacity (C1) with The negative terminal of 9th electrochemical capacitor (C2) is together grounded；The negative power supply (K) includes negative supply (VEE), the tenth electric capacity (C18) and the tenth electrochemical capacitor (C19)；Tenth electricity Hold the one end of (C18) and the negative terminal of the tenth electrochemical capacitor (C19) is connected in parallel on negative supply (VEE)；Tenth electric capacity (C18) it is another The anode with the tenth electrochemical capacitor (C19) is held together to be grounded；In the composite amplifier (E), the output end (13) of the operational amplifier (U8) in operational amplifier (F) part is together The common port of the 16th fixed value resistance (R7) and the 18th fixed value resistance (R25) in emitter-base bandgap grading Wallman voltage amplifier circuit (H) It is connected；The 13rd fixed value resistance (R2), the 14th fixed value resistance (R3) in common emitter Wallman voltage amplifier circuit (H) and The not connected ends of 15 fixed value resistances (R4) and the 6th triode (Q3) in emitter follower (I), the 7th triode (Q4) and The colelctor electrode of 8th triode (Q5) taps into positive supply (VCC) after being connected；The tenth in common emitter Wallman voltage amplifier circuit (H) Nine fixed value resistances (R31), the not connected end of the 20th fixed value resistance (R32) and the 20th certain value resistance (R33) and emitter-base bandgap grading with Tapped into after being connected with the 9th triode (Q7), the tenth triode (Q8) in device (I) with the colelctor electrode of the 11st triode (Q9) negative The negative supply (VEE) of power supply (K)；One end of 30th certain value resistance (R1) and the fortune in operational amplifier (F) part The positive input (11) for calculating amplifier (U8) is connected, the other end of the 30th certain value resistance (R1) and the 24th definite value electricity Hinder (R16), the 25th fixed value resistance (R17), the 27th fixed value resistance (R21) and the 27th fixed value resistance (R22) Common port is connected；The overall annexation of the negative impedance branch circuit：One end and current controlled voltage in magnet coil equivalent model (A) The first adjustable resistance (R24) in source (B) is connected with the common port (16) of the second fixed value resistance (R28), and this common port (16) is again It is connected with the not connected end of the 7th fixed value resistance (R9) in reverse adder (D)；Computing in current-controlled voltage source (B) is put One end of output end (3) the access DSP parts (C) of big device (U9), the other end of DSP parts (C) and in reverse adder (D) the The not connected end of six fixed value resistances (R6) is connected；The output end (8) of operational amplifier (U7) in reverse adder (D) with it is compound The not connected end of the 9th fixed value resistance (R10) in amplifying circuit (E) is connected；The other end in magnet coil equivalent model (A) With the 30th certain value resistance (R1) in composite amplifier (E), the 24th fixed value resistance (R16), the 25th definite value Resistance (R17), the 27th fixed value resistance (R21) are connected with the common port of the 27th fixed value resistance (R22).
- 2. the negative impedance branch circuit according to claim 1 for being used to realize vibration control, it is characterised in that：The negative resistance Anti- branch circuit is a complete closed-loop path.
- 3. the negative impedance branch circuit according to claim 1 for being used to realize vibration control, it is characterised in that：If by electromagnetism Coil equivalent model (A) changes piezoelectric patches equivalent model into, and this circuit connecting relation is still set up.
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| CN201710927058.4A CN107797598B (en) | 2017-09-30 | 2017-09-30 | A kind of negative impedance branch circuit for realizing vibration control |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430046A (en) * | 2001-12-28 | 2003-07-16 | 株式会社村田制作所 | Mechanical quantity sensor |
| CN101350595A (en) * | 2007-07-20 | 2009-01-21 | 高林 | Multipurpose linear circuit module |
| JP2012085280A (en) * | 2010-09-14 | 2012-04-26 | Univ Of Yamanashi | Piezoelectric vibration circuit |
| JP2017158419A (en) * | 2016-03-01 | 2017-09-07 | ヤマハ株式会社 | Damping device |
-
2017
- 2017-09-30 CN CN201710927058.4A patent/CN107797598B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1430046A (en) * | 2001-12-28 | 2003-07-16 | 株式会社村田制作所 | Mechanical quantity sensor |
| CN101350595A (en) * | 2007-07-20 | 2009-01-21 | 高林 | Multipurpose linear circuit module |
| JP2012085280A (en) * | 2010-09-14 | 2012-04-26 | Univ Of Yamanashi | Piezoelectric vibration circuit |
| JP2017158419A (en) * | 2016-03-01 | 2017-09-07 | ヤマハ株式会社 | Damping device |
Non-Patent Citations (2)
| Title |
|---|
| 严博等: "电磁分支电路阻尼梁的振动控制", 《第十届全国振动理论及应用学术会议论文集》 * |
| 严博等: "负电阻电磁分支电路阻尼隔振系统试验技术研究", 《振动工程学报》 * |
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