CN106054856B - Noise analysis approach and device based on nuclear power station pi controller - Google Patents
Noise analysis approach and device based on nuclear power station pi controller Download PDFInfo
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- CN106054856B CN106054856B CN201610363628.7A CN201610363628A CN106054856B CN 106054856 B CN106054856 B CN 106054856B CN 201610363628 A CN201610363628 A CN 201610363628A CN 106054856 B CN106054856 B CN 106054856B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
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Abstract
A kind of noise analysis approach and device based on nuclear power station pi controller provided by the invention, comprising: control host receives the attribute information for standard value E1 and the Alpha noise that user is inputted, and forwarding output respectively；The Alpha noise simulator connecting with the control host carries out Alpha noise simulation, output noise d according to the attribute information of the Alpha noise；Nuclear power station controller board adjusts algorithm according to PI and controls nuclear power station, and input value is respectively E1 and E2, and system response is y, and the E2 is that system responds y and the sum of is superimposed with the output noise d；The control host is also used to show the system response y.By upper, by simulating Alpha noise, and by noise contributions in the PI control loop of nuclear power station controller board, to verify influence of the Alpha noise for nuclear power station controller board using semi-matter simulating system.
Description
Technical field
The present invention relates to nuclear power control technology field, in particular to a kind of noise based on nuclear power station pi controller
Analysis method and device.
Background technique
In field of communication technology, traditionally the noise background of signal is described frequently with additive Gaussian distributed model.It is practical
On, this hypothesis is inaccurate.It has been found that atmospheric noise, sonar and submarine communication in underwater sound signal and make an uproar
Sound has the distribution character much like with Gaussian noise, but has thicker hangover compared with Gaussian noise.Now it has proven convenient that this have
Spiking characteristics, and the noise with thicker hangover can be described with α Stable distritation.Most of existing development process makes
Various experiments are carried out with actual equipment, and improperly input signal and control algolithm may cause nuclear power station controller board not
Reversible damage.And pure software emulation is chiefly used in theory analysis and research, lose contact with reality production, and directive significance is also little.
HWIL simulation (HILS) is in various engineering fields, such as military project, automobile manufacture, robot technology and power electronics
Deng being used.HWIL simulation is used to develop and analyze complicated system.HWIL simulation includes the electricity of driver and transmitter
Gas emulation.These electrical analogues are the bridges between software emulation and real-world object.HILS is used to solve the cost of hardware testing too
Height, algorithm are inflexible problems.
Summary of the invention
In view of this, it is a primary object of the present invention to provide a kind of noise based on nuclear power station pi controller
Analysis method and device, which comprises
Control host receives the attribute information for standard value E1 and the Alpha noise that user is inputted, and forwards respectively defeated
Out；
The Alpha noise simulator connecting with the control host is carried out according to the attribute information of the Alpha noise
Alpha noise simulation, output noise d；
Nuclear power station controller board adjusts algorithm according to PI and controls nuclear power station, and input value is respectively E1 and E2,
System response is y, and the E2 is that system responds y and the sum of is superimposed with the output noise d；
The control host is also used to show the system response y.
By upper, by simulating Alpha noise, and by noise contributions in the PI control loop of nuclear power station controller board,
To verify influence of the Alpha noise for nuclear power station controller board using semi-matter simulating system.
Optionally, the Alpha noise simulator is realized using LabVIEW, using standard S α S distributed model, feature
Function meets:
- ∞ < a <+∞, 0 < α≤2, -1≤β≤1；
The attribute information of the Alpha noise includes: α, characterization parameter；γ indicates the coefficient of dispersion；β indicates symmetrical
Coefficient, a indicate position characteristic parameter.
It optionally, is respectively 0.6,1.2 and 1.8 to the ascending value of characterisitic parameter α.
By upper, by inputting different characterisitic parameter α values, the different pulse characteristic of Alpha noise is shown, and then determine
α value adjusts the PI of nuclear power station controller board the influence of algorithm out.
Optionally, the transmission function of the nuclear power station controller board are as follows:K is static gain in formula；T
For time constant；
The transmission function of the nuclear power station controller board is expressed asK in formulapFor ratio increasing
Benefit, TiFor integration time constant.
Optionally, the input value of the nuclear power station controller board is also respectively E1 and E2 ', and system response is y ', described
E2 ' is that system responds the sum of y ' and being superimposed for white Gaussian noise.
By upper, by being superimposed white Gaussian noise, nuclear power station controller board PI regulating system can be enhanced debates knowledge and magnanimity,
And it is little to systematic influence.Thus, it is possible to enhance with the comparative situation that is superimposed Alpha noise, made an uproar with improving for superposition Alpha
Judgement precision of the sound for systematic influence.
Corresponding, the present invention provides a kind of noise analysis device based on nuclear power station pi controller, comprising:
Host is controlled, for receiving the attribute information for standard value E1 and the Alpha noise that user is inputted, and is turned respectively
Hair output；
Alpha noise simulator is connect with the control host, for the attribute information according to the Alpha noise into
Row Alpha noise simulation, output noise d；
The control host is also used to receive the noise d, and forwards output；
Nuclear power station controller board is connect with the control host, is controlled for adjusting algorithm according to PI to nuclear power station
System, input value are respectively E1 and E2, and system response is y, and the E2 is that system response y is superimposed with the output noise d
The sum of；
The control host is also used to show the system response y.
By upper, by simulating Alpha noise, and by noise contributions in the PI control loop of nuclear power station controller board,
To verify influence of the Alpha noise for nuclear power station controller board using semi-matter simulating system.
Optionally, the nuclear power station controller board includes sequentially connected: filter circuit, adapter, overpressure protection electricity
Road, active filter, proportional action amplifier, integrator and output biasing.
It optionally, further include white Gaussian noise simulator；
The control host is also used to the white Gaussian noise that the white Gaussian noise simulator is simulated being forwarded to nuclear power
Station control board；
The nuclear power station controller board adjusts algorithm according to PI and controls nuclear power station, input value be respectively E1 and
E2 ', system response are y ', and the E2 ' is that system responds y ' and the sum of is superimposed with the white Gaussian noise；
The control host is also used to show the system response y '.
Detailed description of the invention
Fig. 1 is the schematic illustration of the noise analysis device based on nuclear power station pi controller；
Fig. 2~Fig. 4 be respectively α be 0.6,1.2 and 1.8 when Alpha noise waveform diagram；
Fig. 5 is the operation principle schematic diagram of nuclear power station controller board；
Fig. 6 is the response curve of ideally nuclear power station controller board response results y；
Fig. 7 is the response curve of nuclear power station controller board response results y after superposition white Gaussian noise；
Fig. 8~Figure 10 is respectively the nuclear power station control after being superimposed the waveform diagram of Alpha noise when α is 0.6,1.2 and 1.8
The response curve of device board response results y.
Specific embodiment
To overcome defect of the existing technology, the present invention provides a kind of noise based on nuclear power station pi controller
Analysis method and device determine influence of the Alpha noise for pi controller using semi-matter simulating system, to be
Subsequent Alpha noise, which is eliminated, provides data support.
It is as shown in Figure 1 the principle of the noise analysis device provided by the present invention based on nuclear power station pi controller
Schematic diagram, including control host 10, and Alpha noise simulator 20 and nuclear power station controller board connected to it respectively
30。
The control host 10 is for providing the forwarding of operating platform and data.The control host 10 is using including type
Number for NI6259 capture card including NI host realize.User is arranged Alpha by " main interface " of the operating platform and makes an uproar
The attribute information of sound, that is, carry out " parameter setting ", specific object information will be described in detail later.The Alpha noise finally analyzed
The proportional integration (PI) carried out for nuclear power station controller board 30 adjusts influence progress " waveform is shown ".
Specific noise analysis approach is as follows: the attribute information of the Alpha noise is forwarded to by the control host 10
Alpha noise simulator 20 generates Alpha noise with simulation.The Alpha noise simulator 20 is realized using LabVIEW, is adopted
With standard S α S distributed model, characteristic function meets:
- ∞ < a <+∞, 0 < α≤2 ,-1≤β≤1 --- (4)
In standard S α S distributed model, it can determine that a complete Alpha noise is stablized by 4 parameters a, α, β and γ
The characteristic function of distribution.Based on this, parameter a, α, β and γ indicate the attribute information of Alpha noise.
Wherein α characterization parameter, for measuring the thickness of the characteristic function hangover, value is smaller to indicate its hangover
Thicker, in the present embodiment, it is 0.6,1.2 and 1.8 that α, which distinguishes value,.γ indicates the coefficient of dispersion；β indicates symmetry coefficient, standard S α S
In distributed model, β=0；A indicates position characteristic parameter.
Fig. 2-Fig. 4 respectively indicates the waveform diagram of Alpha noise when α is 0.6,1.2 and 1.8.It can be seen from the figure that α
Value is bigger, and the pulse characteristic of signal is weaker.
It is illustrated in figure 5 the operation principle schematic diagram of nuclear power station proportional plus integral control system.Sp indicates standard input in Fig. 5
Value E1, the E1 value are set according to 30 model of different nuclear power station controller board.D indicates 20 moulds of Alpha noise simulator
The noise drawn up.G (c) indicates that the PI of nuclear power station controller board 30 is adjusted.In the present embodiment, in nuclear power station controller board 30
Portion includes sequentially connected filter circuit, adapter, overpressure protection circuit, active filter, proportional action amplifier, integrator
It is biased with output.G (P) indicates controlled device.In the present embodiment, controlled device can be indicated by first-order lag inertial element,
Transmission function are as follows:K is static gain in formula；T is time constant.
The PI of nuclear power station controller board 30 adjusts transmission function and is expressed asK in formulapFor than
Example gain, TiFor integration time constant.
The effect of proportional action amplifier is the response speed of quickening system, improves system degree of regulation.KpIt is bigger, be
The response speed of system is faster, and the degree of regulation of system is higher, that is, higher to the resolution ratio of error, but is easy to produce overshoot,
It is unstable to even result in system.If KpValue is too small, then can reduce degree of regulation, especially makes response speed slow, thus
Extend regulating time, systematic steady state, dynamic property is made to degenerate.Therefore, when deviation is larger, to improve response speed, KpIt takes big
Value；When deviation is smaller, the excessive generation oscillation of overshoot, K are preventedpReduce；When deviation very little, to keep system stable as early as possible, then Kp
It should continue to reduce.
The effect of integrator is the steady-state error of elimination system.It integrates error, has to system control certain
Hysteresis, integral action is too strong, will cause system overshoot increase, or even causes to vibrate.In nuclear power station controller board 30
Conventional PI condition in, when deviation is excessive, for prevent integral be saturated, often integral element is separated, when deviation is decreased to one
When determining range, integral element is just added.Therefore, when deviation is big or it is larger when, to avoid system overshoot, KiTake zero；Work as deviation
When smaller, integral element is effective, increases with the reduction of deviation, to eliminate the steady-state error of system, mentions high control precision.
In the present embodiment, the white Gaussian noise of certain amplitude is superimposed by the input terminal in nuclear power station controller board 30
E2 ' (is equivalent to E2 described hereinafter), and nuclear power station controller board 30PI regulating system can be enhanced debates knowledge and magnanimity, and to system
It influences little.It is as shown in Figure 6,7 respectively the response curve of response results y ideally, and superposition white Gaussian noise
The response curve of response results y ' afterwards.Pass through the above-mentioned conclusion of comparison susceptible of proof of two figures.Curve positioned at the middle and upper part Fig. 7 is to ring
Answer the response curve of result y；The curve of lower part is white Gaussian noise curve.The white Gaussian noise is simulated by white Gaussian noise
Device is realized.
And in the present embodiment, the Alpha noise to be determined of influence due to to(for) nuclear power station controller board 30, in core
The sum of the input terminal of plant controller board 30 is superimposed Alpha noise, and the response results y and Alpha noise d of system are superimposed expression
For E2.
Nuclear power station controller board 30 receives inputted E1, E2 value, after filter circuit once filter, by
The difference that adapter carries out E1, E2 calculates.Indicate that Alpha noise is noiseless as E1=E2；When E1 > E2, indicate that Alpha makes an uproar
Sound is minus deviation；Otherwise when E1 < E2, expression Alpha noise is overgauge.The deviation was carried out by overpressure protection circuit
Pressure protection, to guarantee the stable operation of system.Calculated bias contribution passes through respectively after active filter is filtered
The corresponding adjustment of proportional action amplifier and integrator, after being finally normalized, output biasing exports integrating circuit
Signal be converted to standard signal.As seen in figs. 8-10, Fig. 8-Figure 10 is respectively that α is 0.6,1.2 and to specific voltage output result
Influence of the Alpha noise for the carried out PI adjusting of nuclear power station controller board 30 when 1.8.In Fig. 8-Figure 10, the song on top
Line is the response curve of response results y；The curve of lower part be respectively α be 0.6,1.2 and 1.8 when Alpha noise curve.Such as figure
It is found that influence of the difference α value to system is also different in Alpha noise, α value is smaller, influences bigger.
The control host 10 can the Alpha noise curve of influence according to to(for) pi controller, be subsequent
Alpha noise, which is eliminated, provides data support and noise reduction response.Detailed process and non-present invention emphasis, therefore no longer repeated.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention.In short, all in the present invention
Spirit and principle within, any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of noise analysis approach based on nuclear power station pi controller characterized by comprising
Control host receives the attribute information for standard value E1 and the Alpha noise that user is inputted, and forwarding output respectively；
The Alpha noise simulator connecting with the control host carries out Alpha according to the attribute information of the Alpha noise and makes an uproar
Acoustic simulation, output noise d；
Nuclear power station controller board adjusts algorithm according to PI and controls nuclear power station, and input value is respectively E1 and E2, system
The sum of responding is y, and the E2 is superimposed for system response y with the output noise d；
The nuclear power station controller board calorimeter calculates the deviation of E1, E2, indicates that Alpha noise is noiseless as E1=E2；E1 > E2
When, expression Alpha noise is minus deviation；Otherwise when E1 < E2, expression Alpha noise is overgauge；
The control host is also used to show the system response y.
2. the method according to claim 1, wherein the Alpha noise simulator using LabVIEW realize,
Using standard S α S distributed model, characteristic function meets:
- ∞ < a <+∞, 0 α≤2 <, -1≤β≤1；
The attribute information of the Alpha noise includes: α, characterization parameter；γ indicates the coefficient of dispersion；β indicates symmetric system
Number；A indicates position characteristic parameter.
3. according to the method described in claim 2, it is characterized in that, being to the ascending value respectively of the characterisitic parameter α
0.6,1.2 and 1.8.
4. the method according to claim 1, wherein the controlled device of the nuclear power station controller board transmits letter
Number are as follows:K is static gain in formula；T is time constant；
The PI of the nuclear power station controller board adjusts transmission function and is expressed asK in formulapFor ratio increasing
Benefit, TiFor integration time constant.
5. the method according to claim 1, wherein the input value of the nuclear power station controller board is also respectively
E1 and E2 ', system response are y ', and the E2 ' is that system responds the sum of y ' and being superimposed for white Gaussian noise.
6. a kind of noise analysis device based on nuclear power station pi controller characterized by comprising
Host is controlled, for receiving the attribute information for standard value E1 and the Alpha noise that user is inputted, and is forwarded respectively defeated
Out；
Alpha noise simulator is connect with the control host, for the attribute information progress according to the Alpha noise
Alpha noise simulation, output noise d；
The control host is also used to receive the noise d, and forwards output；
Nuclear power station controller board is connect with the control host, is controlled for adjusting algorithm according to PI nuclear power station,
Input value is respectively E1 and E2, and system response is y, and the E2 is that the system responds y and the sum of is superimposed with the output noise d；
The control host is also used to show the system response y；
The nuclear power station controller board calorimeter calculates the deviation of E1, E2, indicates that Alpha noise is noiseless as E1=E2；E1 > E2
When, expression Alpha noise is minus deviation；Otherwise when E1 < E2, expression Alpha noise is overgauge.
7. device according to claim 6, which is characterized in that the nuclear power station controller board includes sequentially connected:
Filter circuit, adapter, overpressure protection circuit, active filter, proportional action amplifier, integrator and output biasing.
8. device according to claim 6, which is characterized in that further include white Gaussian noise simulator；
The control host is also used to the white Gaussian noise that the white Gaussian noise simulator is simulated being forwarded to nuclear power station control
Device board processed；
The nuclear power station controller board adjusts algorithm according to PI and controls nuclear power station, and input value is respectively E1 and E2 ',
System response is y ', and the E2 ' is that system responds y ' and the sum of is superimposed with the white Gaussian noise；
The control host is also used to show the system response y '.
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| WO2006111899A3 (en) * | 2005-04-18 | 2007-03-15 | Philips Intellectual Property | Circuit arrangement, in particular phase-locked loop, as well as corresponding method |
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| DE10344089A1 (en) * | 2003-09-23 | 2005-04-28 | Infineon Technologies Ag | Control method for the AGC unit of a radio receiver |
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| WO2006111899A3 (en) * | 2005-04-18 | 2007-03-15 | Philips Intellectual Property | Circuit arrangement, in particular phase-locked loop, as well as corresponding method |
| CN201369685Y (en) * | 2009-02-27 | 2009-12-23 | 华中科技大学 | Inverter power supply for digital control of instantaneous voltage PID and current PI |
| CN103455028A (en) * | 2013-08-29 | 2013-12-18 | 国家电网公司 | Static testing and calibrating method for PID link of control system of wind turbine generator |
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