CN201725182U - Automatic control principle experimental module - Google Patents
Automatic control principle experimental module Download PDFInfo
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- CN201725182U CN201725182U CN2010202934319U CN201020293431U CN201725182U CN 201725182 U CN201725182 U CN 201725182U CN 2010202934319 U CN2010202934319 U CN 2010202934319U CN 201020293431 U CN201020293431 U CN 201020293431U CN 201725182 U CN201725182 U CN 201725182U
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Abstract
An automatic control principle experimental module comprises an analog circuit, a step-function signal switch, a step-function signal output end, a step-function signal regulating knob, a signal input end, a signal output end and a peripheral component interconnecting slot, wherein the analog circuit is based on the root locus analysis experiment content of a linear system, the step-function signal output end is used for connecting the signal input end of the analog circuit, the step-function signal regulating knob regulates the amplitude value of a step-function signal, the signal input end is connected with the signal output end of the analogue circuit, the peripheral component interconnecting slot is connected with an experiment platform, and the analog circuit is integrated in the automatic control principle experimental module. The automatic control principle experimental module saves too much time of an experimenter on component preparation and experiment circuit building, thereby saving the time of teaching experiment.
Description
Technical field
The utility model relates to a kind of education experiment product, relates in particular to a kind of automation-control experiment module.
Background technology
At present, the used automation-control experiment system of teaching comprises following experiment content: the speed control experiment of the state space analysis of the correction of the root locus analysis of the time domain response of typical link, the time domain response of canonical system and stability analysis, linear system, the frequency response analysis of linear system, linear system, the stability analysis of discrete system, linear system, the test of typical non linear link static characteristics, direct current generator and electric thermo-couple temperature control experiment.Traditional automation-control experiment system utilizes bread board to build the required circuit of experiment, carrying out waveform by the parameter value on the manual adjustments oscillograph after circuit is built and finished shows, on bread board, build circuit and need be ready to the required electric wire of circuit, components and parts etc., again with ready components and parts and electric wire one by one in the inserting surface wrapper sheet, and need the manual adjustments oscillograph, holding time is more, and because the limitation of time in classroom, a lot of students can not finish experiment on time.
The utility model content
In view of the above-mentioned problems in the prior art, fundamental purpose of the present utility model is to address the deficiencies of the prior art, and a kind of automation-control experiment module of saving time in classroom is provided.
A kind of automation-control experiment module, it is characterized in that, described automation-control experiment module comprises a mimic channel based on linear system root locus analysis experiment content, one step signaling switch, one provides the step signal output terminal of step signal for described mimic channel, one regulates the step signal adjusting knob of step signal amplitude, one measuring-signal with described mimic channel exports the signal output part of an experiment porch to, one measuring-signal with described mimic channel is forwarded to the signal input part of described signal output part and the peripherals of the described experiment porch of a connection connects slot, and described mimic channel is integrated in the described automation-control experiment module.
According to technical conceive of the present utility model, the upper surface of described automation-control experiment module is drawn the circuit theory diagrams that described mimic channel is arranged.
According to technical conceive of the present utility model, the upper surface etching of described automation-control experiment module has the circuit theory diagrams of described mimic channel.
According to technical conceive of the present utility model, the upper surface of described automation-control experiment module is pasted with the circuit theory diagrams of described mimic channel.
According to technical conceive of the present utility model, described automation-control experiment module also comprises a signal generator output terminal.
According to technical conceive of the present utility model, also be integrated with a plurality of independent components and parts in the described automation-control experiment module, each described independent components and parts two ends is connected with binding post, and a binding post by correspondence in the described independent components and parts is connected in described mimic channel.
According to technical conceive of the present utility model, described a plurality of independent components and parts are adjustable resistance, and the sliding end of each described adjustable resistance connects one respectively and regulates the adjusting knob of the resistance of corresponding adjustable resistance.
According to technical conceive of the present utility model, described mimic channel comprises that one receives the step signal input end of step signal, one in the measuring-signal output terminal of the measuring-signal of exporting described mimic channel, first to fourth operational amplifier, first to the 8th resistance, the 3rd electric capacity of first and a phase inverter, described first resistance is connected between the inverting input of described signal input part and described first operational amplifier, described second resistance is connected between the output terminal of the inverting input of described first operational amplifier and phase inverter, described the 3rd resistance is connected between the inverting input and output terminal of described first operational amplifier, described the 4th resistance is connected between the inverting input of the output terminal of described first operational amplifier and second operational amplifier, described first electric capacity is connected between the inverting input and output terminal of described second operational amplifier, described the 5th resistance is connected between the inverting input of the output terminal of described second operational amplifier and the 3rd operational amplifier, described the 6th resistance and second electric capacity are connected in parallel between the inverting input and output terminal of described the 3rd operational amplifier, the output terminal of described the 3rd operational amplifier connects a binding post, the inverting input of described four-operational amplifier connects first end of described the 7th resistance, first of described the 7th resistance, second end connects a binding post respectively, described the 8th resistance and the 3rd electric capacity are connected in parallel between the inverting input and output terminal of described four-operational amplifier, the input end of described phase inverter connects the output terminal of described four-operational amplifier, the output terminal of described four-operational amplifier connects a binding post as described measuring-signal output terminal.
The beneficial effects of the utility model are: the utility model is integrated in the circuit of linear system root locus analysis experiment content in the automation-control experiment module in advance, and replace traditional bread board to connect experiment porch, but plug and play, therefore the time that the experimenter need not to cost a lot of money can make full use of time in classroom and finish experiment and understand experiment content in the preparation of components and parts and building of experimental circuit.
Description of drawings
Fig. 1 is connected in the module map of an experiment porch for the utility model automation-control experiment module.
Fig. 2 is installed in the structural drawing on the base of described experiment porch for the automation-control experiment module among Fig. 1.
Fig. 3 is that the automation-control experiment module among Fig. 2 is installed in the vertical view on the described base.
Fig. 4 has the synoptic diagram of circuit theory diagrams for the automation-control experiment module among Fig. 1.
Fig. 5 is the circuit connection diagram when carrying out the experiment of linear system root locus analysis.
Fig. 6 is the root locus diagram of drawing according to the open-loop transfer function of circuit among Fig. 5.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Please refer to Fig. 1, the utility model automation-control experiment module 1 is used to connect a NI ELVIS experiment porch 2, be integrated with the mimic channel of a predetermined experiment content in the described automation-control experiment module 1, described NI ELVIS experiment porch 2 is gathered the signal of described mimic channel, and sends the signal that collects to a computing machine 3 and show.Described computing machine 3 comprises a signal gathering unit 31, a parameter regulation unit 32 and a signal imitation unit 33.In the present embodiment, described mimic channel is based on the root locus analysis experiment content design of linear system.
Please continue with reference to figure 2 and Fig. 3, described automation-control experiment module 1 is removably mounted on the base 20 of described NI ELVIS experiment porch 2, during concrete operations, traditional experiment bread board can be taken off from the base 20 of described NI ELVIS experiment porch, again described automation-control experiment module 1 is fixed on the described base on 20, the better embodiment of described automation-control experiment module 1 comprises a plurality of binding posts 12, one step signaling switch 13, one step Signal Regulation knob 14, one step signal output part 15, one signal input part 16, one signal output part 17, an one signal generator output terminal 18 and a PCI (Peripheral Component Interconnect, peripherals connects) slot 19 figure, when described automation-control experiment module 1 is fixed on the described base 20, its PCI slot 19 just contacts with golden finger on the described base 20, described step signal output terminal 15 is used to described mimic channel that step signal is provided, described step signal adjusting knob 14 is used to regulate the amplitude of described step signal, described signal output part 17 connects described NI ELVIS experiment porch 2, be used to gather the output signal of described automation-control experiment module 1, be the measuring-signal of described mimic channel, described signal input part 16 is used for the measuring-signal of described mimic channel is forwarded to described signal output part 17.
The signal output part that the signal gathering unit 31 and of described computing machine 3 is located at the described NIELVIS experiment porch 2 on the described base 20 links to each other, be used to receive input, the output signal of described automation-control experiment module 1, described signal gathering unit 31 is USB interface or IEEE 1394 interfaces.
Described parameter regulation unit 32 is by a signal imitation operation interface signalization acquisition parameter, for example, enable passage, triggering mode, sampling rate etc., in the present embodiment, can described signals collecting parameter be set in described signal imitation operation interface by input equipments such as computer keyboard, mouses.
Described signal imitation unit 33 carries out analog simulation by input, the output signal of the automation-control experiment module 1 that the interior software of establishing is received described signal gathering unit 31, to produce the waveform response curve of described mimic channel, and with the waveform response curve display that produces on the screen of described computing machine 3, for the experimenter observe, record.
Please continue with reference to figure 4, described automation-control experiment module 1 also comprises a drafting, sticking card or be etched in circuit theory Figure 11 of its upper surface, described circuit theory Figure 11 is the schematic diagram of described mimic channel, also be integrated with a plurality of independent components and parts that optionally are connected to described mimic channel in the described automation-control experiment module 1, be respectively 66K Ω-166M Ω as three adjustable Standard resistance ranges among Fig. 3,200K Ω-2.4M Ω, 2.59M the adjustable resistance of Ω-3.59M Ω, the two ends of each described independent components and parts all are connected with binding post 12, the sliding end of each described independent components and parts connects an adjusting knob respectively, in order to regulate the resistance of corresponding adjustable resistance.
Described mimic channel is the experimental circuit of " root locus analysis of linear system ", described mimic channel comprises that one receives the step signal input end r (t) of step signal, the measuring-signal output terminal C (t) of the described mimic channel measuring-signal of one output, four operational amplifier U1-U4, resistance R 1-R8, a capacitor C 1-C3 and a phase inverter I, described resistance R 1 is connected between the inverting input of described signal input part r (t) and described operational amplifier A 1, described resistance R 2 is connected between the output terminal of the inverting input of described operational amplifier A 1 and phase inverter I, described resistance R 3 is connected between the inverting input and output terminal of described operational amplifier A 1, described resistance R 4 is connected between the inverting input of the output terminal of described operational amplifier A 1 and described operational amplifier A 2, described capacitor C 1 is connected between the inverting input and output terminal of described operational amplifier A 2, described resistance R 5 is connected between the inverting input of the output terminal of described operational amplifier A 2 and operational amplifier A 3, described resistance R 6 and capacitor C 2 are connected in parallel between the inverting input and output terminal of described operational amplifier A 3, the output terminal of described operational amplifier A 3 connects a binding post 12, the two ends of described resistance R 7 respectively connect a binding post 12, the inverting input of described operational amplifier A 4 connects first end of described resistance R 7, described resistance R 8 and capacitor C 3 are connected in parallel between the inverting input and output terminal of described operational amplifier A 4, the input end of described phase inverter I connects the output terminal of described operational amplifier A 4, the output terminal of described operational amplifier A 4 connects a binding post 12, as described measuring-signal output terminal C (t), described resistance R 7 is an adjustable resistance in the described independent components and parts.
Please continue with reference to figure 5 and Fig. 6, the open-loop transfer function that can be obtained system by the circuit connection diagram among Fig. 5 is:
Open-loop gain K=500K Ω/R7, before the root locus analysis experiment of carrying out linear system, root locus diagram according to above-mentioned open-loop transfer function drawing system, denominator polynomial expression S (S+1) by open-loop transfer function is 3 with the branches of piling up as can be known (0.5S+1), three corresponding limits are respectively p1=0, p2=1, p3=-2, then the root locus on the real axis δ originates in three limit p1, p2, p3 respectively among Fig. 6, wherein, two root locus that originate in limit p1, p2 separate after real axis meets, according to equation
Calculate the value of S, the burble point that obtains these two root locus is S=-0.422, with S=-0.422 substitution equation 1.5S
2+ 3S+1=K obtains K=0.193.With S=jW substitution secular equation j (2W-W
3+ 2K-3W
3)=0 obtains K=3,
Can draw out as shown in Figure 6 root locus diagram according to above result of calculation, the value of the corresponding open-loop gain K of the every bit of root locus, wherein, the value of the open-loop gain K of described burble point S=-0.422 place correspondence is 0.193,
With
The value of the open-loop gain K that the place is corresponding is 3.
Because K=500K Ω/R7, when 0＜K≤0.193, R7 〉=2591K Ω, the closed-loop pole of system is negative real number, and step response is acyclic process; When K=3, R7=166K Ω, closed-loop pole have a pair of root on imaginary axis jW, system's continuous oscillation, neutrality; When K＞3, R7＜166K Ω, two root locus enter the RHP of root locus diagram, system's instability; When 0.193＜K＜3,166K Ω＜R7＜2591K Ω, closed-loop pole have a pair of real part to be negative conjugate complex number, and system is the damped oscillation process.
When carrying out the root locus analysis experiment of linear system, the output terminal of described operational amplifier A 3 and second end of resistance R 7 are linked to each other by corresponding binding post 12, according to above to resistance R 7 resistance and system stability between the theoretical analysis that concerns, the adjustable resistance of selecting a correspondence is as described resistance R 7, one end of the input end of described phase inverter I and described resistance R 2 links to each other by corresponding binding post 12, according to above to resistance R 7 resistance and system stability between the theoretical analysis that concerns, select corresponding adjustable resistance as described resistance R 7, described step signal output terminal 15 is linked to each other with the step signal input end r (t) of described mimic channel, described measuring-signal output terminal C (t) links to each other with the signal input part 16 of described automation-control experiment module 1, and the amplitude of regulating step signals by described step signal adjusting knob 14 is 2V, sets at described signal imitation operation interface and enables passage, triggering mode, sampling rate, just can move input after the signals collecting parameters such as the method for operation to described automation-control experiment module 1, the emulation of output signal.
By the resistance of corresponding adjusting knob change resistance R 7, promptly change the open-loop gain of system, by described computing machine 3 display waveform response curves, whether identical with the time domain response situation and the above-mentioned theory analysis of recording geometry reality.
The utility model is integrated in the experimental circuit in the teaching material in the automation-control experiment module in advance, and replace traditional bread board to connect NI ELVIS test platform, but plug and play, the time that the experimenter need not to cost a lot of money is in the preparation of components and parts and building of experimental circuit, can be on computers signalization acquisition parameter quickly and accurately, and directly by described computing machine display waveform, the experimenter can make full use of time in classroom and finish experiment and understand experiment content.
Claims (8)
1. automation-control experiment module, it is characterized in that, described automation-control experiment module comprises a mimic channel based on linear system root locus analysis experiment content, one step signaling switch, one provides the step signal output terminal of step signal for described mimic channel, one regulates the step signal adjusting knob of step signal amplitude, one measuring-signal with described mimic channel exports the signal output part of an experiment porch to, one measuring-signal with described mimic channel is forwarded to the signal input part of described signal output part and the peripherals of the described experiment porch of a connection connects slot, and described mimic channel is integrated in the described automation-control experiment module.
2. automation-control experiment module as claimed in claim 1 is characterized in that: the upper surface of described automation-control experiment module is drawn the circuit theory diagrams that described mimic channel is arranged.
3. automation-control experiment module as claimed in claim 1 is characterized in that: the upper surface etching of described automation-control experiment module has the circuit theory diagrams of described mimic channel.
4. automation-control experiment module as claimed in claim 1 is characterized in that: the upper surface of described automation-control experiment module is pasted with the circuit theory diagrams of described mimic channel.
5. automation-control experiment module as claimed in claim 1 is characterized in that: described automation-control experiment module also comprises a signal generator output terminal.
6. automation-control experiment module as claimed in claim 1, it is characterized in that: also be integrated with a plurality of independent components and parts in the described automation-control experiment module, each described independent components and parts two ends is connected with binding post, and a binding post by correspondence in the described independent components and parts is connected in described mimic channel.
7. automation-control experiment module as claimed in claim 6 is characterized in that: described a plurality of independent components and parts are adjustable resistance, and the sliding end of each described adjustable resistance connects one respectively and regulates the adjusting knob of the resistance of corresponding adjustable resistance.
8. automation-control experiment module as claimed in claim 1, it is characterized in that: described mimic channel comprises that one receives the step signal input end of step signal, the measuring-signal output terminal of the measuring-signal of the described mimic channel of one output, first to fourth operational amplifier, first to the 8th resistance, the 3rd electric capacity of first and a phase inverter, described first resistance is connected between the inverting input of described signal input part and described first operational amplifier, described second resistance is connected between the output terminal of the inverting input of described first operational amplifier and phase inverter, described the 3rd resistance is connected between the inverting input and output terminal of described first operational amplifier, described the 4th resistance is connected between the inverting input of the output terminal of described first operational amplifier and second operational amplifier, described first electric capacity is connected between the inverting input and output terminal of described second operational amplifier, described the 5th resistance is connected between the inverting input of the output terminal of described second operational amplifier and the 3rd operational amplifier, described the 6th resistance and second electric capacity are connected in parallel between the inverting input and output terminal of described the 3rd operational amplifier, the output terminal of described the 3rd operational amplifier connects a binding post, the inverting input of described four-operational amplifier connects first end of described the 7th resistance, first of described the 7th resistance, second end connects a binding post respectively, described the 8th resistance and the 3rd electric capacity are connected in parallel between the inverting input and output terminal of described four-operational amplifier, the input end of described phase inverter connects the output terminal of described four-operational amplifier, the output terminal of described four-operational amplifier connects a binding post as described measuring-signal output terminal.
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| CN2010202934319U CN201725182U (en) | 2010-08-16 | 2010-08-16 | Automatic control principle experimental module |
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| CN2010202934319U CN201725182U (en) | 2010-08-16 | 2010-08-16 | Automatic control principle experimental module |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269976A (en) * | 2011-06-30 | 2011-12-07 | 中国西电电气股份有限公司 | Multifunctional precise control testing platform |
| CN103310100A (en) * | 2013-06-05 | 2013-09-18 | 同济大学 | Method for application of Z-domain root locus to virtual experiment based on Flex |
| CN103995474A (en) * | 2014-05-12 | 2014-08-20 | 西北大学 | Virtual automatic control experimental system and design method of virtual automatic control experimental system |
| CN108010411A (en) * | 2017-11-06 | 2018-05-08 | 南京航空航天大学 | A kind of intelligence assembly type automatically controls synthetic instruction experiment porch |
-
2010
- 2010-08-16 CN CN2010202934319U patent/CN201725182U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269976A (en) * | 2011-06-30 | 2011-12-07 | 中国西电电气股份有限公司 | Multifunctional precise control testing platform |
| CN103310100A (en) * | 2013-06-05 | 2013-09-18 | 同济大学 | Method for application of Z-domain root locus to virtual experiment based on Flex |
| CN103310100B (en) * | 2013-06-05 | 2016-12-28 | 同济大学 | Z territory based on Flex root locus application process in virtual experimental |
| CN103995474A (en) * | 2014-05-12 | 2014-08-20 | 西北大学 | Virtual automatic control experimental system and design method of virtual automatic control experimental system |
| CN108010411A (en) * | 2017-11-06 | 2018-05-08 | 南京航空航天大学 | A kind of intelligence assembly type automatically controls synthetic instruction experiment porch |
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Owner name: SHANGHAI ENAI INSTRUMENT CO., LTD. Free format text: FORMER OWNER: BEIJING ZHONG KE FAN HUA MEASUREMENT + CONTROL CO. LTD. Effective date: 20150803 |
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Effective date of registration: 20150803 Address after: 201203 Zhang Dong Road, Shanghai, No. forty-third, building 1387, 45, Pudong New Area Patentee after: Beijing Fanhua Hengxing Technology Co., Ltd. Address before: 100083 Beijing City, Haidian District Zhongguancun Road No. 18 smartfortune International Building A9 Patentee before: Beijing Zhongke Pansino Technology Co., Ltd. |
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Granted publication date: 20110126 |
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