CN102520751A - Analog operational control circuit - Google Patents
Analog operational control circuit Download PDFInfo
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- CN102520751A CN102520751A CN2011103876697A CN201110387669A CN102520751A CN 102520751 A CN102520751 A CN 102520751A CN 2011103876697 A CN2011103876697 A CN 2011103876697A CN 201110387669 A CN201110387669 A CN 201110387669A CN 102520751 A CN102520751 A CN 102520751A
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Abstract
The invention relates to an analog operational control circuit, which comprises a first analog multiplier, a second analog multiplier, a first operational amplifier, a second operational amplifier, a third operational amplifier, a fourth operational amplifier, a fifth operational amplifier and a sixth operational amplifier. The first and the second analog multipliers and the first, the second, the fourth and the fifth operational amplifiers form a signal synthesis operational circuit which is used for performing synthetic operation of addition, deduction, multiplying, dividing, reversing and proportioning on output voltage, current, inner resistance, power setup signals and/or feedback signals. The third operational amplifier forms an output voltage closed-loop negative feedback control circuit, and the sixth operational amplifier forms an output current closed-loop negative feedback control circuit. A hardware simulation circuit is used for controlling output of constant inner resistance, constant power, constant voltage and constant current characteristics of a storage battery simulation power supply, the signal is convenient to set up, the circuit is rapid to response, the interference resistance is strong, and the operational precision is high.
Description
Technical field
The present invention relates to the accumulator analog power, a kind of specifically simulation trial control circuit is used for the permanent internal resistance of accumulator analog power, permanent power, constant voltage, constant current output characteristic control.
Background technology
As motor transport vehicle; The safety that relates to driver, occupant, road vehicle and pedestrian; The security of operation and the reliability of internal combustion automobile, new-energy automobile (hybrid power and pure electronic), electrocar etc. are very important; This need be to vehicle component; Comprise car electrics such as vehicle-mounted motor, electromagnetic switch, driving are automatically controlled, electric battery, battery management system BMS, electric parameters such as the voltage of especially vehicle-mounted motor, electric current, rotating speed, torque, power carry out strictness and comprehensively quality of production monitoring and control.
Present vehicular electrical appliance accumulator analog power; Mainly be the linear rectifier power source of transistor, SCR controlled silicon industrial frequency phase control rectifier power supply, IGBT (insulated gate bipolar transistor) or MOSFET (FET) high-frequency inversion switching and rectifying power supply, or do automatic test by means of computer system.
1) mostly existing storage battery analog power, output characteristics are ripe constant voltage, current constant mode.The technical permanent internal resistance R (U=U of being unrealized
0-I * R, R=Δ U/ Δ I), permanent power P (output of the pattern of P=U * I), simultaneously not with constant voltage U, continuous current I output mode organically blend the needs that can not satisfy test comprehensively and test.
2) adopt the computer software programs mode, carry out signal sets, computing and control (U=U
0-I * R, R=Δ U/ Δ I; P=U * I), realize permanent internal resistance, the output of permanent power mode, stickiness is big during test macro, anti-interference is poor, arithmetic eror is bigger, often can not adapt to the dynamic test needs of the motor that runs up.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of simulation trial control circuit, be used for the permanent internal resistance of accumulator analog power, permanent power, constant voltage, constant current output characteristic control.
The technical scheme that the present invention adopts is following:
The simulation trial control circuit; Be used for accumulator analog power output characteristic control, comprise the 1st analog multiplier (N1), the 2nd analog multiplier (N6), the 1st operational amplifier (N2), the 2nd operational amplifier (N3), the 3rd operational amplifier (N4), the 4th operational amplifier (N5), the 5th operational amplifier (N7) and the 6th operational amplifier (N8); The output terminal of the 1st analog multiplier (N1) is connected with the 1st operational amplifier (N2) negative terminal; The 1st operational amplifier (N2) is connected into see-saw circuit; The output terminal of the 1st operational amplifier (N2) is connected with the 2nd operational amplifier (N3) anode through resistance; The 2nd operational amplifier (N3) is connected into in-phase amplification circuit; The 3rd operational amplifier (N4) constitutes the division arithmetic circuit with the 2nd analog multiplier (N5), and the output terminal of the 3rd operational amplifier (N4) is connected to the 4th operational amplifier (N6) negative terminal through resistance, and the 4th operational amplifier (N6) is connected into see-saw circuit; The 4th operational amplifier (N6) output terminal to anodal, passes through the output terminal that the passive contact of switch or relay (K1), resistance are connected to the 2nd operational amplifier (N3) through diode (D1) negative pole again; The output terminal of the 2nd operational amplifier (N3) is connected with the 3rd operational amplifier (N4) anode through resistance; The 2nd operational amplifier (N3) is connected into see-saw circuit; The 6th operational amplifier (N8) output terminal to anodal, passes through the output terminal that passive contact of switch or relay (K2) and resistance are connected to the 3rd operational amplifier (N4) through diode (D2) negative pole more successively.
The present invention adopts the devices at full hardware mimic channel; Output voltage, electric current, internal resistance, power setting signal and/or feedback signal are carried out " add, subtract, multiplication and division, reverse, ratio " compose operation; Be used for the permanent internal resistance of accumulator analog power, permanent power, constant voltage, constant current output characteristic control; With voltage/current/power/internal resistance signal feeding, computing and the complete hardwareization of control, control permanent internal resistance, permanent power, constant voltage, constant current output integrated simultaneously.Signal sets of the present invention is convenient, and the circuit response is fast, strong interference immunity, operational precision are high.
[description of drawings]
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is the circuit theory diagrams of simulation trial control circuit embodiment of the present invention.
Fig. 2 is the accumulator analog power schematic diagram of simulation trial control circuit embodiment of the present invention.
Fig. 3 is the analog power output characteristics figure of simulation trial control circuit embodiment of the present invention.
[embodiment]
Fig. 2 is the 0-120V/1000A electric motor of automobile test frame principle figure with the accumulator analog power, is mainly used in car electrics parts such as automobile starter, drive motor, automatically controlled, electromagnetic switch, battery management system BMS and tests.
In Fig. 2, the control signal Vk of U/I/R/P simulation trial control circuit output is connected to the AC-DC rectifier power source, and the VD of AC-DC rectifier power source, current signal feed back to the simulation trial control circuit again.Wherein signal sets can through potentiometer manually, Programmable Logic Controller PLC or host computer communication mode realize.The AC-DC rectifier power source can be the linear rectifier power source of transistor, SCR controlled silicon industrial frequency phase control rectifier power supply, IGBT (insulated gate bipolar transistor) or MOSFET (FET) high-frequency inversion switching and rectifying power supply.
The input signal of simulation trial control circuit is Rg (internal resistance setting value), Ug (output voltage initial set value), Vf (output voltage feedback signal), Pg (output power setting signal), Ig (output current setting value), If (output current feedback signal).The output signal is Vk (a rectifier control signal).
The setting signal of simulation trial control circuit is: output voltage setting signal Ug (the corresponding output voltage 0-120V of 0-5V), output current setting signal Ig (the corresponding output current 0-1000A of 0-5V), output current feedback signal If (the corresponding output current 0-1000A of 0-5V), simulation internal resistance setting signal Rg (internal resistance is zero milliohm when the corresponding output of 0-5V internal resistance 0-150 milliohm, constant voltage output), output power setting signal Pg (the corresponding output power 0-50KW of 0-5V).Signal sets can through potentiometer manually, Programmable Logic Controller PLC or host computer communication mode.
As shown in Figure 1, the working mechanism of simulation trial control circuit is following:
The simulation trial control circuit mainly is made up of analog multiplier N1, N6, integrated operational amplifier N2, N3, N4, N5, N7, N8 etc.Be used for output voltage, electric current, internal resistance, power setting signal and/or feedback signal are carried out " add, subtract, multiplication and division, reverse, ratio " compose operation.
In the time of need doing permanent internal resistance pattern (comprising that constant voltage mode, internal resistance are zero) output; The passive contact K1 of switch or relay, K2 break off, and it is Rg * If that multiplier N1 carries out multiplying with internal resistance setting value Rg, rectifier output current value of feedback If, through the reverse scale operation of operational amplifier N2 are-Rg * If; Deliver to operational amplifier N3 again; With output voltage initial set value Ug, do the synthetic plus and minus calculation of signal, synthetic given signal Z=Ug-If * Rg output; As the given signal Vg of rectifier output voltage, deliver to the output voltage close loop negative feedback control circuit that constitutes by operational amplifier N4.
The given signal Vg of rectifier output voltage; Deliver to the operational amplifier N4 anode of voltage close loop control; Simulation test power supply actual output voltage Vf delivers to operational amplifier N4 negative terminal through the resistance-capacitance network dividing potential drop; Pid parameter through operational amplifier N4 is proofreaied and correct output, as rectifier control signal Vk, sends to the rectifier power source control circuit; The work dutycycle size of the PWM width modulation through dynamic oxide-semiconductor control transistors conducting enlargement factor, thyristor operating angle size or IGBT (insulated gate bipolar transistor) or MOSFET (FET), thereby according to permanent internal resistance restriction relation (U=U
0-I * R, R=Δ U/ Δ I), at the required output voltage of corresponding actual output current, satisfy the test needs of permanent internal resistance simulation output characteristics.
In the time of need doing the output of permanent power mode; The passive contact K1 of switch or relay connects, K2 breaks off; The division arithmetic signal of forming by multiplier N6, operational amplifier N5 etc.; With output power setting signal Pg and output current feedback signal If computing is the required control signal Y=-10 * Pg/If of corresponding permanent power output, delivers to operational amplifier N7 again, and doing reverse scale operation is W=Pg/If; Through diode D1, controlled passive contact K1, synthesize the given signal Vg of rectifier output voltage with operational amplifier N3 output signal Z=Ug-If * Rg once more.(during P=U * I) much smaller than setting value, signal value W=Pg/If is bigger, and output voltage control signal Vg is controlled by permanent internal resistance (constant voltage) operation relation (U=U when output power
0-I * R, R=Δ U/ Δ I) output signal Z=Ug-If * Rg, analog power runs on permanent internal resistance (constant voltage) pattern earlier; As output power (P=U * when I) reaching setting value; The big young pathbreaker of output voltage control signal Vg is according to the W=Pg/If restriction relation; Along with output current increases, the corresponding control signal Vg that reduces delivers to the output voltage closed control circuit; The accumulator analog power runs on permanent power mode, reaches the maximum limit definite value until output current.
In the time of need doing constant current mode output, the passive contact K1 of switch or relay breaks off, K2 connects, and constitutes output current close loop negative feedback control circuit by operational amplifier N8: 0-5V output current setting signal Ig; Deliver to operational amplifier N8 anode, simulation test power supply actual output current If is after signal sampling is handled; Deliver to operational amplifier N8 negative terminal; Pid parameter through operational amplifier N8 is proofreaied and correct output, through the passive contact K2 of diode D2, switch or relay, is linked to the output of output voltage closed-loop control operational amplifier N4; Synthesize rectifier control signal signal Vk, send to the rectifier power source control circuit again.
When output current during much smaller than setting value, output current closed loop operational amplifier N8 output is bigger, and rectifier control signal Vk is controlled by the output of voltage close loop operational amplifier N4, and the accumulator analog power is output as permanent internal resistance (constant voltage) pattern.
When output current reaches setting value; Output current closed loop operational amplifier N8 output is less; Rectifier control signal Vk is controlled by the output of current closed-loop operational amplifier N8, through dynamic oxide-semiconductor control transistors conducting enlargement factor or thyristor operating angle size, or the work dutycycle of the PWM width modulation of IGBT (insulated gate bipolar transistor) or MOSFET (FET) size; The realization output current is constant, satisfies the test needs of continuous current output analog feature.
The test of present embodiment 0-120V/1000A electric motor of automobile is following with 4 kinds of output modes of accumulator analog power:
1) constant current output mode, promptly the output current of accumulator analog power does not change with the output voltage size, reaches the upscale protection value until output voltage, and output current just descends, to protect the accumulator analog power and to be connected load.
2) constant voltage output mode; Be that internal resistance R is zero permanent internal resistance pattern, the output voltage of accumulator analog power does not change with the output current size, reaches the upscale protection value until output current; Output voltage just descends, to protect the accumulator analog power and to be connected load.
3) permanent internal resistance output mode, U=U
0-I * R, R=Δ U/ Δ I, promptly according to the output current size, constantly the adjustment output voltage is big or small in real time for the accumulator analog power, thereby realizes permanent internal resistance output, reaches the upscale protection value until output current.
4) permanent power mode output, P=U * I, promptly the accumulator analog power runs on constant voltage or permanent internal resistance pattern earlier; Along with the increase of output current, output power constantly increases, when reaching setting power; According to formula P=U * I restriction relation, according to the output current size, constantly the adjustment output voltage is big or small in real time; Thereby realize permanent power output, reach the upscale protection value until output current.
Fig. 3 is the output characteristics figure of 4 kinds of output modes of above-mentioned accumulator analog power, wherein: straight line U
3-A-B is a constant voltage mode, straight line I
2-D-C-B is a constant current mode, straight line U
3-D is permanent internal resistance pattern, and curve A-C is permanent power mode.
Claims (1)
1. simulation trial control circuit; Be used for accumulator analog power output characteristic control; It is characterized in that, comprise the 1st analog multiplier (N1), the 2nd analog multiplier (N6), the 1st operational amplifier (N2), the 2nd operational amplifier (N3), the 3rd operational amplifier (N4), the 4th operational amplifier (N5), the 5th operational amplifier (N7) and the 6th operational amplifier (N8); The output terminal of the 1st analog multiplier (N1) is connected with the 1st operational amplifier (N2) negative terminal; The 1st operational amplifier (N2) is connected into see-saw circuit; The output terminal of the 1st operational amplifier (N2) is connected with the 2nd operational amplifier (N3) anode through resistance; The 2nd operational amplifier (N3) is connected into in-phase amplification circuit; The 3rd operational amplifier (N4) constitutes the division arithmetic circuit with the 2nd analog multiplier (N5), and the output terminal of the 3rd operational amplifier (N4) is connected to the 4th operational amplifier (N6) negative terminal through resistance, and the 4th operational amplifier (N6) is connected into see-saw circuit; The 4th operational amplifier (N6) output terminal to anodal, passes through the output terminal that the passive contact of switch or relay (K1), resistance are connected to the 2nd operational amplifier (N3) through diode (D1) negative pole again; The output terminal of the 2nd operational amplifier (N3) is connected with the 3rd operational amplifier (N4) anode through resistance; The 2nd operational amplifier (N3) is connected into see-saw circuit; The 6th operational amplifier (N8) output terminal to anodal, passes through the output terminal that passive contact of switch or relay (K2) and resistance are connected to the 3rd operational amplifier (N4) through diode (D2) negative pole more successively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103876697A CN102520751B (en) | 2011-11-29 | 2011-11-29 | Analog operational control circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103876697A CN102520751B (en) | 2011-11-29 | 2011-11-29 | Analog operational control circuit |
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| CN102520751A true CN102520751A (en) | 2012-06-27 |
| CN102520751B CN102520751B (en) | 2013-12-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10144355A (en) * | 1996-11-12 | 1998-05-29 | Shinko Electric Co Ltd | Battery simulator |
| CN2638255Y (en) * | 2003-06-24 | 2004-09-01 | 清华大学 | Fuel cell analog device |
| CN201110982Y (en) * | 2007-08-17 | 2008-09-03 | 比亚迪股份有限公司 | Battery analogue circuit |
| CN201984093U (en) * | 2011-01-14 | 2011-09-21 | 合肥东耀电子有限公司 | Internal resistance setting device of storage battery analog power supply |
| CN202383548U (en) * | 2011-11-29 | 2012-08-15 | 合肥东耀电子有限公司 | Analog operation control circuit |
-
2011
- 2011-11-29 CN CN2011103876697A patent/CN102520751B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10144355A (en) * | 1996-11-12 | 1998-05-29 | Shinko Electric Co Ltd | Battery simulator |
| CN2638255Y (en) * | 2003-06-24 | 2004-09-01 | 清华大学 | Fuel cell analog device |
| CN201110982Y (en) * | 2007-08-17 | 2008-09-03 | 比亚迪股份有限公司 | Battery analogue circuit |
| CN201984093U (en) * | 2011-01-14 | 2011-09-21 | 合肥东耀电子有限公司 | Internal resistance setting device of storage battery analog power supply |
| CN202383548U (en) * | 2011-11-29 | 2012-08-15 | 合肥东耀电子有限公司 | Analog operation control circuit |
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