CN113189919B - Control system and method for high-frequency noise power gain - Google Patents

Control system and method for high-frequency noise power gain Download PDF

Info

Publication number
CN113189919B
CN113189919B CN202110580724.8A CN202110580724A CN113189919B CN 113189919 B CN113189919 B CN 113189919B CN 202110580724 A CN202110580724 A CN 202110580724A CN 113189919 B CN113189919 B CN 113189919B
Authority
CN
China
Prior art keywords
frequency noise
gain
signal
power gain
transfer function
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110580724.8A
Other languages
Chinese (zh)
Other versions
CN113189919A (en
Inventor
陈锦攀
郑晓光
李军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Electric Power Research Institute of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202110580724.8A priority Critical patent/CN113189919B/en
Publication of CN113189919A publication Critical patent/CN113189919A/en
Application granted granted Critical
Publication of CN113189919B publication Critical patent/CN113189919B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25257—Microcontroller

Abstract

The invention discloses a control system and a control method for high-frequency noise power gain, and relates to the technical field of process control of thermal power units. The system comprises an improved novel basic controller, a lead-lag observer, a high-frequency noise power gain calculation device, a comparator, a nonlinear integral control device and a multiplier. The invention can utilize the noise interference signal contained in the signal to complete the on-line calculation of the high-frequency noise power gain, the signal generally contains the high-frequency noise interference signal in the actual process, and the high-frequency noise power gain of the improved novel basic controller is automatically tracked to the preset high-frequency noise power gain setting, so that the performance of the improved novel basic controller is controlled in the best state, and the influence on the on-line work of the improved novel basic controller is small.

Description

Control system and method for high-frequency noise power gain
Technical Field
The invention relates to the technical field of process control of thermal power generating units, in particular to a control system and a control method for high-frequency noise power gain.
Background
In the field of thermal power unit process control, advance information of process response can be acquired by advanced observation, and the method has important significance for improving process control performance. In 2019, the "advanced and expectable basic control technology" of an article published by the automated science and newspaper in the national knowledge network in the field of industrial process control, which issues a novel basic controller (HPLO), has a breakthrough in advanced observation mechanisms. The novel basic controller can be independently used, however, the problem of noise interference amplification exists in advance observation, and the problem is mainly high-frequency noise interference amplification. When the High frequency noise interference level is High, for example, the High Frequency Noise Power Gain (HFNPG) is High, the output signal of the novel basic controller may be seriously interfered, and even the novel basic controller may not work normally. In the process control of the thermal power generating unit, the problem of online control of the high-frequency noise power gain of the novel basic controller needs to be solved firstly. To a large extent, the high frequency noise power gain of the new basic controller represents the high frequency noise interference level of the new basic controller. In addition, the novel basic controller has a relatively complex structure, and engineering improvement is needed, namely, the Improved high performance leading apparatus (INFC) is Improved.
Disclosure of Invention
The invention aims to provide a control system and a control method for high-frequency noise power gain, which can control the performance of an improved novel basic controller in an optimal state by automatically tracking the high-frequency noise power gain of the improved novel basic controller to a preset high-frequency noise power gain setting, so that the influence of noise interference on the online work of the improved novel basic controller is reduced.
To achieve the above object, an embodiment of the present invention provides a system for controlling a power gain of high frequency noise, including:
the improved novel basic controller is used for acquiring a controller input signal and outputting a controller output signal;
the advanced-lag observer is used for acquiring the output signal of the controller and the noise filtering parameter of the improved novel basic controller and outputting an observer output signal;
the high-frequency noise power gain calculation device is used for acquiring the controller input signal and the observer output signal and outputting a second high-frequency noise power gain;
the comparator is used for acquiring a preset high-frequency noise power gain setting and the second high-frequency noise power gain and outputting a comparison signal;
the nonlinear integral control device is used for acquiring the comparison signal and outputting an integral control signal;
and the multiplier is used for acquiring the noise filtering parameter and the integral control signal and outputting an inertia lag time constant to be given to the lead-lag observer.
Preferably, the nonlinear integral control device comprises a TI input end for acquiring a constant 1 and an OTC input end for acquiring a start-stop signal.
Preferably, the improved novel basic controller comprises: the device comprises an input gain control module, an adder, a first inertia combination filter, a subtracter, a feedback gain control module, a second inertia combination filter, a gain compensation module and a noise filter;
the output end of the input gain control module is connected with the first addend of the adder; the input end of the first inertia combination filter is connected with the output end of the adder; the output end of the first inertia combination filter is connected with the second addend of the adder; the output end of the adder is connected with the subtracted end of the subtracter; the output end of the subtracter is connected with the input end of the feedback gain control module; the output end of the feedback gain control module is connected with the input end of the second inertia combination filter; the output end of the second inertia combination filter is connected with the subtracting end of the subtracter; the output end of the subtracter is connected with the input end of the gain compensation module; the output end of the gain compensation is connected with the input end of the noise filter; the noise filter is used for outputting a controller output signal.
Preferably, the parameter expression of the improved and novel basic controller is as follows:
INFC＝KIGCHEI(s)NF(s),
Figure BDA0003085924880000031
Figure BDA0003085924880000032
Figure BDA0003085924880000033
KGC＝1+KFGC,
Figure BDA0003085924880000034
Figure BDA0003085924880000035
INFC(s) is the transfer function of the improved new base controller; kIGCIs the gain of the input gain control module; HEI(s) is the transfer function of the high-efficiency integrator; ICFA(s) is a transfer function of the first inertial combination filter; n isICFAIs the order of the first inertial combination filter; t isHEIIs the time constant of the high efficiency integrator; HPLO(s) is the transfer function of the new base controller; kFGCThe gain of the feedback gain control module; kGCIs the gain of the gain compensation module; ICFB(s) is the transfer function of the second inertial combination filter; n isICFBCombining the order of the filter for the second inertia; t isHPLOTo improve the time constant of the new base controller; NF(s) is the transfer function of the noise filter; t isNFPFiltering parameters for the noise of the noise filter.
Preferably, the lead-lag observer includes a lead unit and an inertial lag unit;
the output end of the leading unit is connected with the input end of the inertial delay unit;
the lead unit is used for acquiring the controller output signal and the lead time constant control value;
the inertial lag unit is used for acquiring the given inertial lag time constant and outputting an observer output signal.
Preferably, the parameter expression of the lead-lag observer is as follows:
L/L:O(s)＝LL(s)ILL(s),
LL(s)＝1+TLLs,TLL＝TNFP,
Figure BDA0003085924880000036
TILL＝ILTCG(t)
wherein, L/L is O(s) which is a transfer function of the advance-lag observer; LL(s) is the transfer function of the look-ahead unit; t isLLIs the lead time constant of the lead unit; t isNFPFiltering parameters for the noise; ILL(s) is the transfer function of the inertial lag unit; t is a unit ofILLIs the inertial lag time constant of the inertial lag unit; ILTCG (t) is given as the inertial lag time constant.
Preferably, the parameter expression of the comparator is:
Figure BDA0003085924880000041
ISG(t)＝HFNPGG,
ISF(t)＝HFNPG:S(t)
wherein S isC(t) is a comparison signal; ISG(t) is a given-end input signal; HFNPG is given for the preset high-frequency noise power gain; ISF(t) is a feedback end input signal; (t) HFNPG is the second high frequency noise power gain; DZCIs the dead band of the comparator.
Preferably, the parameter expression of the high-frequency noise power gain calculation device is:
Figure BDA0003085924880000042
Figure BDA0003085924880000043
Figure BDA0003085924880000044
Figure BDA0003085924880000045
OSSO:B(t)＝[OSHPF:B(t)]2,
Figure BDA0003085924880000046
Figure BDA0003085924880000047
Figure BDA0003085924880000048
OSSO:A(t)＝[OSHPF:A(t)]2
wherein HFNPG (t) is the second high frequency noise power gain; l is-1Representing an inverse laplace transform; MOV (B)(s) is the transfer function of the average value operation B; b(s) is a transfer function of High pass filter B (HPF: B); OSHPF:B(t) is the high pass filtered B output signal; OSSO:B(t) is a Square operation of B (SO: B) output signal; IS (B), (t) IS an input signal B; MOV (A)(s) is the transfer function of the average value operation A; HPF, A(s) is the transfer function of the high-pass filter A; OSHPF:A(t) is the high pass filtered A output signal; OSSO:A(t) is the output signal of the square operation A; IS (t) IS input signal A; MOV (A)(s) is the transfer function of the average value operation A; OSSO:A(t) is the output signal of the square operation A; IS (a), (t) IS an input signal; t isMTIs the average length of time common to MOV: B(s) and MOV: A(s); t isHPFIs the high-pass filter time constant common to HPF B(s) and HPF A(s).
The embodiment of the invention also provides a control method of the high-frequency noise power gain, which comprises the following steps:
inputting a controller input signal to the improved novel basic controller to obtain a controller output signal;
inputting the controller output signal and the noise filtering parameter of the improved novel basic controller into a lead-lag observer to obtain an observer output signal;
inputting the controller input signal and the observer output signal to a high-frequency noise power gain calculation device to obtain a second high-frequency noise power gain;
inputting a preset high-frequency noise power gain and the second high-frequency noise power gain into a comparator to obtain a comparison signal;
inputting the comparison signal into a nonlinear integral control device to obtain an integral control signal;
and inputting the noise filtering parameter and the integral control signal into a multiplier to obtain an inertia lag time constant given value, and inputting the inertia lag time constant given value into the lead-lag observer.
Preferably, the nonlinear integral control device comprises a TI input end for acquiring a constant 1 and an OTC input end for acquiring a start-stop signal.
Preferably, the improved novel basic controller comprises: the device comprises an input gain control module, an adder, a first inertia combination filter, a subtracter, a feedback gain control module, a second inertia combination filter, a gain compensation module and a noise filter;
the output end of the input gain control module is connected with the first addend of the adder; the input end of the first inertia combination filter is connected with the output end of the adder; the output end of the first inertia combination filter is connected with the second addend of the adder; the output end of the adder is connected with the subtracted end of the subtracter; the output end of the subtracter is connected with the input end of the feedback gain control module; the output end of the feedback gain control module is connected with the input end of the second inertia combination filter; the output end of the second inertia combination filter is connected with the subtracting end of the subtracter; the output end of the subtracter is connected with the input end of the gain compensation module; the output end of the gain compensation is connected with the input end of the noise filter; the noise filter is used for outputting a controller output signal.
Preferably, the parameter expression of the improved and novel basic controller is as follows:
INFC＝KIGCHEI(s)NF(s),
Figure BDA0003085924880000061
Figure BDA0003085924880000062
Figure BDA0003085924880000063
KGC＝1+KFGC,
Figure BDA0003085924880000064
Figure BDA0003085924880000065
INFC(s) is the transfer function of the improved new base controller; kIGCIs the gain of the input gain control module; HEI(s) is the transfer function of the high-efficiency integrator; ICFA(s) is a transfer function of the first inertial combination filter; n isICFAIs the order of the first inertial combination filter; t isHEIIs the time constant of the high efficiency integrator; HPLO(s) is the transfer function of the new base controller; kFGCControlling the gain of the module for the feedback gain; kGCIs the gain of the gain compensation module; ICFB(s) is the transfer function of the second inertial combination filter; n isICFBCombining the order of the filter for the second inertia; t isHPLOTo improve the time constant of the new base controller; NF(s) is the transfer function of the noise filter; t isNFPFiltering parameters for the noise of the noise filter.
Preferably, the lead-lag observer includes a lead unit and an inertial lag unit;
the output end of the leading unit is connected with the input end of the inertial delay unit;
the lead unit is used for acquiring the controller output signal and the lead time constant control value;
the inertial lag unit is used for acquiring the given inertial lag time constant and outputting an observer output signal.
Preferably, the parameter expression of the lead-lag observer is:
L/L:O(s)＝LL(s)ILL(s),
LL(s)＝1+TLLs,TLL＝TNFP,
Figure BDA0003085924880000071
TILL＝ILTCG(t)
wherein, L/L is O(s) which is a transfer function of the advance-lag observer; LL(s) is the transfer function of the look-ahead unit; t isLLIs the lead time constant of the lead unit; t isNFPFiltering parameters for the noise; ILL(s) is the transfer function of the inertial lag unit; t isILLIs the inertial lag time constant of the inertial lag unit; ILTCG (t) is given as the inertial lag time constant.
Preferably, the parameter expression of the comparator is:
Figure BDA0003085924880000072
ISG(t)＝HFNPGG,
ISF(t)＝HFNPG:S(t)
wherein S isC(t) is a comparison signal; ISG(t) is a given-end input signal; HFNPG is given for the preset high-frequency noise power gain; ISF(t) is a feedback end input signal; (t) HFNPG is the second high frequency noise power gain; DZCIs the dead band of the comparator.
Preferably, the parameter expression of the high-frequency noise power gain calculation device is:
Figure BDA0003085924880000073
Figure BDA0003085924880000074
Figure BDA0003085924880000075
Figure BDA0003085924880000076
OSSO:B(t)＝[OSHPF:B(t)]2,
Figure BDA0003085924880000077
Figure BDA0003085924880000078
Figure BDA0003085924880000079
OSSO:A(t)＝[OSHPF:A(t)]2
wherein HFNPG (t) is the second high frequency noise power gain; l-1Representing an inverse laplace transform; MOV (B)(s) is the transfer function of the average value operation B; b(s) is a transfer function of High pass filter B (HPF: B); OSHPF:B(t) is the high pass filtered B output signal; OSSO:B(t) is a Square operation of B (SO: B) output signal; IS (B), (t) IS an input signal B; MOV (A)(s) is the transfer function of the mean value operation ACounting; HPF, A(s) is the transfer function of the high-pass filter A; OSHPF:A(t) high pass filtering the A output signal; OSSO:A(t) is the output signal of the square operation A; IS (a), (t) IS an input signal A; MOV (A)(s) is the transfer function of the average value operation A; OSSO:A(t) is the output signal of the square operation A; IS (a), (t) IS an input signal; t isMTIs the average length of time common to MOV: B(s) and MOV: A(s); t isHPFIs the high-pass filter time constant common to HPF B(s) and HPF A(s).
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a control system of high-frequency noise power gain, which comprises an improved novel basic controller, a first basic controller, a second basic controller and a third basic controller, wherein the improved novel basic controller is used for acquiring an input signal of a controller and outputting an output signal of the controller; the advanced-lag observer is used for acquiring the output signal of the controller and the noise filtering parameter of the improved novel basic controller and outputting an observer output signal; the high-frequency noise power gain calculation device is used for acquiring the controller input signal and the observer output signal and outputting a second high-frequency noise power gain; the comparator is used for acquiring a preset high-frequency noise power gain setting and the second high-frequency noise power gain and outputting a comparison signal; the nonlinear integral control device is used for acquiring the comparison signal and outputting an integral control signal; a multiplier for acquiring the noise filtering parameter and the integral control signal and outputting an inertial lag time constant given to the lead-lag observer. The invention can utilize the noise interference signal contained in the signal to complete the on-line calculation of the high-frequency noise power gain, the signal generally contains the high-frequency noise interference signal in the actual process, and the high-frequency noise power gain of the improved novel basic controller is automatically tracked to the preset high-frequency noise power gain setting, so that the performance of the improved novel basic controller is controlled in the best state, and the influence on the on-line work of the improved novel basic controller is small.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a control system for high-frequency noise power gain according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an improved basic controller in a control system for high-frequency noise power gain according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lead-lag observer in a control system of a high-frequency noise power gain according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating the principle of control of the non-linear integral control and the feedback process in the control system of the high-frequency noise power gain according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating feedback process control variables and automatic tracking variables in a control system for high-frequency noise power gain according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a high frequency noise power gain calculation device in a control system for high frequency noise power gain according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a method for controlling a power gain of high-frequency noise according to an embodiment of the present invention;
FIG. 8 is a graph of simulation results of an improved basic controller input signal process provided by an embodiment of the present invention;
FIG. 9 is a graph of simulation results of a process of outputting signals from the lead/lag observer according to an embodiment of the present invention;
FIG. 10 is a diagram illustrating simulation results of a second high frequency noise power gain process according to an embodiment of the present invention;
FIG. 11 is a graph illustrating the results of a simulation experiment for a given process of inertial lag time constant, according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of a computer terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the step numbers used herein are for convenience of description only and are not used as limitations on the order in which the steps are performed.
It is to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The terms "comprises" and "comprising" indicate the presence of the described features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The term "and/or" refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
The following are terms and abbreviations for embodiments of the present invention:
an Improved novel basic controller (INFC); input Gain Control (IGC); a High Efficiency Integrator (HEI); inertial Combination Filters (ICF); feedback Gain Control (FGC); gain Compensation (GC); noise filters (Noisefilter, NF); noise Filtering Parameter (NFP); an Adder (Adder, a); a subtractor (S); noise Filter Parameter Selection (NFPS); noise Filter Parameters Original Value (NFPOV); noise Filter Parameter Control Value (NFPCV); a Lead time constant control value (ltcc); inertial lag (Inertia lag link, ILL); inertial lag time constant given (Inertia lag time constant given, ILTCG); high Frequency Noise Power Gain (HFNPG); high Frequency Noise Power Gain Given (HFNPGG); tracking Input (TI); output Tracking Control (OTC); feedback Process Control (FPC); a Feedback Process Control Process (FPCP); band Pass Filter Gain (BPFG); band Pass Filter Bandwidth (BPFB); noise Bandwidth (INB); a First Order Inertial Filter (FOIF); input Signal (IS); mean Value Operation (MVO); high Pass Filtering (HPF); absolute Value Operation (AVO); division Operation (DO).
Referring to fig. 1, fig. 1 is a schematic structural diagram of a high frequency noise power gain control system according to an embodiment of the present invention. The control system for the high-frequency noise power gain provided by the embodiment comprises an improved novel basic controller 10, a lead-lag observer 20, a high-frequency noise power gain calculation device 30, a comparator 41, a nonlinear integral control device 42 and a multiplier 50.
In the embodiment of the present invention, the improved basic controller 10 is used for acquiring a controller input signal and outputting a controller output signal; a lead-lag observer 20 for acquiring the controller output signal and the noise filtering parameter of the improved novel basic controller 10, and outputting an observer output signal; a high-frequency noise power gain calculation means 30 for acquiring the controller input signal and the observer output signal, and outputting a second high-frequency noise power gain; a comparator 41, configured to obtain a preset high-frequency noise power gain setting and the second high-frequency noise power gain, and output a comparison signal; a non-linear integral control device 42 for obtaining the comparison signal and outputting an integral control signal; a multiplier 50 for acquiring the noise filtering parameter and the integral control signal, and outputting an inertial lag time constant given to the lead-lag observer 20.
In the embodiment of the present invention, the nonlinear integral control device 42 includes a TI input terminal for acquiring a constant 1 and an OTC input terminal for acquiring a start-stop signal. Wherein, the start/Stop signal (AT/S) represents a Stop state when AT/S is 0, and represents an automatic tracking state when AT/S is 1. AT/S can be directly used for representing the control output of the start switch, and the start and stop signals are BOOL variables.
Referring to fig. 2, fig. 2 is a schematic structural diagram of an improved basic controller 10 in a high frequency noise power gain control system according to an embodiment of the present invention. In an embodiment, the improved new base controller 10 comprises: an input gain control module 11, an adder 12, a first inertial combination filter 13, a subtractor 14, a feedback gain control module 15, a second inertial combination filter 16, a gain compensation module 17, and a noise filter 18.
In the embodiment of the present invention, the output end of the input gain control module 11 is connected to the first addend of the adder 12; the input end of the first inertia combination filter 13 is connected with the output end of the adder 12; the output end of the first inertia combination filter 13 is connected with the second addend of the adder 12; the output end of the adder 12 is connected with the subtracted end of the subtracter 14; the output end of the subtractor 14 is connected with the input end of the feedback gain control module 15; the output end of the feedback gain control module 15 is connected with the input end of the second inertia combination filter 16; the output end of the second inertia combination filter 16 is connected with the subtraction end of the subtracter 14; the output end of the subtractor 14 is connected with the input end of the gain compensation module 17; the output end of the gain compensation is connected with the input end of the noise filter 18; the noise filter 18 is used to output the controller output signal.
In the embodiment of the present invention, the parameter expression of the improved and new basic controller 10 is:
Figure BDA0003085924880000121
wherein INFC(s) is the transfer function of the improved new base controller 10; kIGCThe unit is dimensionless for the gain input to the gain control module 11; HEI(s) is the transfer function of the high-efficiency integrator; icfa(s) is the transfer function of the first inertial combination filter 13; n isICFAIs the order of the first combined inertial filter 13 in dimensionless units; t isHEIIs the time constant of the high-efficiency integrator, and has the unit of s; HPLO(s) is the transfer function of the new base controller; kFGCThe gain of the feedback gain control module 15 is in dimensionless units; kGCIs the gain of the gain compensation module 17, and the unit is dimensionless; ICFB(s) is the transfer function of the second inertial combination filter 16; n isICFBIs the order of the second inertial combination filter 16 in dimensionless units; t isHPLOTo improve the time constant of the new base controller 10; NF(s) is the transfer function of the noise filter 18; t isNFPIs the noise filter parameter of the noise filter 18, with the unit s.
In one embodiment, the decomposition is performed with respect to the above equation (1) as follows:
1) the input signal of the improved basic controller 10 is connected to the input end of the input gain control. By ISINFC(t) expresses the improved novel base controller 10 input signal in dimensionless units.
2) The input gain control output is connected to a first addend of an Adder 12(Adder, a).
3) The output of the adder 12 is connected to the input of the first inertial combination filter.
4) The output of the first inertia combining filter is connected to the second addend of the adder 12.
5) The output of the adder 12 is connected to the Subtracted end of a subtractor 14 (subtrected, S).
6) The output of the subtractor 14 is connected to the input of the feedback gain control.
7) And connecting the output end of the feedback gain control to the input end of the second inertia combination filter.
8) The output terminal of the second inertia combination filter is connected to the subtracting terminal of the subtracter 14.
9) The output of the subtractor 14 is connected to the input of the gain compensation.
10) The output of the gain compensation is connected to the input of the noise filter 18. The output signal of the improved novel basic controller 10 is obtained at the output of the noise filter 18. By OSINFC(t) expresses the improved novel base controller 10 output signal in dimensionless units.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a lead-lag observer 20 in a control system of high-frequency noise power gain according to an embodiment of the present invention. The present embodiment provides a lead-lag observer 20 including a lead unit 21 and an inertial lag unit 22.
In the embodiment of the present invention, the output end of the lead unit 21 is connected with the input end of the inertial lag unit 22; the lead unit 21 is configured to obtain the controller output signal and the lead time constant control value; the inertial lag unit 22 is configured to obtain the inertial lag time constant and output an observer output signal.
In the embodiment of the present invention, the parameter expression of the lead-lag observer 20 is:
Figure BDA0003085924880000141
wherein, L/L is O(s) is the transfer function of the lead-lag observer 20; LL(s) is the transfer function of the look-ahead unit 21; t isLLIs the lead time constant of the lead unit 21 in units of s; t isNFPThe unit is s for the noise filtering parameter; ILL(s) is the transfer function of inertial lag unit 22; t isILLIs the inertial lag time constant of the inertial lag unit 22 in units of s; ILTCG (t) is given as the inertial lag time constant in units of s.
In one embodiment, the decomposition is performed with respect to the above equation (2) as follows:
1) the INFC output signal is coupled to an input of the LL. Will be the TNFPThe LTCG input terminal connected to the L/L: O is used for Leading Time Constant Given (LTCG), namely the noise filter 18 noise filter parameter TNFPSetting the TLLI.e. TLL＝TNFP。
2) And connecting the output end of the LL to the input end of the ILL. The ILTCG (T) is connected to an ILTCG input end of the L/L: O for setting an inertia lag time constant, namely the ILTCG (T) is used for setting the TILLI.e. TILL＝ILTCG(t)。
3) And obtaining the L/L: O output signal at the output end of the ILL. By OSL/L:O(t) expressing the L/L: O output signal in dimensionless units.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a nonlinear integral control and feedback process control principle in a control system for high frequency noise power gain according to an embodiment of the present invention.
In the embodiment of the present invention, the expression of the comparator 41 is:
Figure BDA0003085924880000142
wherein S isC(t) is a comparison signal in dimensionless units; ISG(t) is the input signal at the given end in dimensionless units; HFNPG is a predetermined number of High Frequency Noise Power Gain Given (HFNPGG), and has a dimensionless unit; ISF(t) is a feedback end input signal, and the unit is dimensionless; HFNPG (t) is the second high frequency noise power gain (HFNPG of second, HFNA: S) process in units ofDimensionless; DZCThe Dead Zone (DZ) of the comparator 41 is dimensionless.
The expression of Bidirectional Square Root Operation (BSRO) is:
Figure BDA0003085924880000151
wherein S isBSRO(t) is a bidirectional square root operation signal, with dimensionless units. SC(t) is the comparison signal in dimensionless units.
The expression for integral control is:
Figure BDA0003085924880000152
wherein ic(s) is a transfer function of integral control; t isICIs the integration time constant of the integration control and has the unit of s.
Tracking control of integral control, wherein the expression is as follows:
Figure BDA0003085924880000153
wherein S isIC(t) is the integral control signal in dimensionless units; TI is the Tracking Input (TI) of the integral control, and has a dimensionless unit. OTC is an Output Tracking Control (OTC) of the integral control, which is a BOOL variable; SS is a starting switch and is a BOOL variable; sBSRO(t) is the bidirectional square root operation signal, and the unit is dimensionless.
The integral control tracking control steps are as follows:
1) a constant 1 is connected to the TI input of the integration control.
2) And connecting the SS to the OTC input end of the integral control.
3) If the SS is 0, the OTC is 0, and the integral control signal is SIC(t) tracking constant 1, i.e. SIC(t)＝TI＝1。
4) If SS is 1, OTC is 1, the integral control signal is SIC(t) is the signal S for the bidirectional square root operationBSRONegative integral of (t). Said integral control signal being SIC(t) has an initial memory effect, and after OTC-SS-1, SIC(t) will vary on a constant 1 basis.
At DZCWhen the value is 0, the feedback process control expression is as follows:
Figure BDA0003085924880000161
wherein FPC(s) is a transfer function of the FPC; NIC(s) is a transfer function of the non-linear integral control; fpcp(s) is a transfer function of a feedback process control process, approximating a Nonlinear Proportional System (NPS); BPFGINFC:ILLThe band-pass filter gain input to the output of the inertial lag unit 22 for the improved novel base controller 10 is in dimensionless units; BPFBINFC:ILLThe band-pass filter bandwidth input to the output of the inertial lag unit 22 for the improved novel basic controller 10 is in rad/s; INBINFCThe noise bandwidth at the input of the new basic controller 10 is improved in rad/s. Specifically, the following description is provided: nic(s) is only one symbol used to express the nonlinear integral control transfer function.
Referring to fig. 5, fig. 5 is a schematic flow chart illustrating a feedback process control quantity and an automatic tracking quantity in a control system of a high frequency noise power gain according to an embodiment of the present invention.
The feedback process control quantity ILTCG (t), namely the inertia lag time constant is given, and the expression is as follows:
ILTCG(t)＝SIC(t)TNFP (8)
where ILTCG (t) is given as the inertial lag time constant in units of s. SIC(t) is the integral control signal in dimensionless units; t isNFPFor said noise filtering parameter, unitIs s.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a high frequency noise power gain calculation device 30 in a high frequency noise power gain control system according to an embodiment of the present invention. According to the embodiment of the invention, the calculation result of the high-frequency noise power gain of the Input signal B (Input signal of B, IS: B) relative to the Input signal A (Input signal of A, IS: A) IS obtained through the calculation of the high-frequency noise power gain, and the calculation result of the high-frequency noise power gain IS output at the output end of the OS of the calculation of the high-frequency noise power gain.
The expression of the high-frequency noise power gain calculation device 30 is:
Figure BDA0003085924880000171
wherein, hfnpg (t) is the high frequency noise power gain calculation process, and the unit is dimensionless; l is-1Representing an inverse laplace transform; MOV (B)(s) is the transfer function of Mean value operation B (MVO: B); b(s) is a transfer function of High pass filter B (HPF: B); OSHPF:B(t) is the high pass filtered B output signal in dimensionless units; OSSO:BAnd (t) is a Square operation of B (SO: B) output signal, and the unit is dimensionless. The unit of IS (B), (t) IS the process of an input signal B and IS dimensionless; MOV(s) is the transfer function of Mean value operation A (MVO: A); a(s) is the transfer function of the High pass filter A (HPF: A); OSHPF:A(t) is the high pass filtered A output signal in dimensionless units. OSSO:A(t) is a Square operation of A (SO: A) output signal, and the unit is dimensionless; a (t) IS the process of the input signal A, and the unit IS dimensionless; MOV A(s) is the transfer function of Mean value operation A (MVO: A). OSSO:A(t) is the output signal of Square operation A (SO: A), and the unit is dimensionless. IS (t) IS the process of input signal A, and the unit IS dimensionless; t isMTThe Mean Time (MT) length of MOV, B(s) and MOV, A(s)Degree, in units of s; t isHPFIs the high-pass filtering time constant common to HPF: B(s) and HPF: A(s) in units of s.
In one embodiment, the decomposition is performed with respect to equation (9) above, as follows:
1) the input signal B is connected to the input of the high-pass filter B.
2) And connecting the output end of the high-pass filtering B to the input end of the square operation B.
3) And connecting the output end of the square operation B to the input end of the average operation B.
4) The input signal a is coupled to an input of the high-pass filter a.
5) And connecting the output end of the high-pass filter A to the input end of the square operation A.
6) And connecting the output end of the square operation A to the input end of the average operation A.
7) And connecting the output end of the average value operation B to the dividend input end of Division Operation (DO). And connecting the output end of the average value operation A to the divisor input end of the Division Operation (DO). And obtaining the high-frequency noise power gain calculation process at the output end of the division operation. The high frequency noise power gain calculation process is expressed in units of dimensionless terms by hfnpg (t).
8) Outputting the high frequency noise power gain calculation process, HFNPG (t), at the OS output of the high frequency noise power gain calculation.
Referring to fig. 7, fig. 7 is a flowchart illustrating a method for controlling a power gain of high frequency noise according to an embodiment of the invention. The same portions of this embodiment as those of the above embodiments will not be described herein again. The method for controlling the power gain of the high-frequency noise provided by the embodiment comprises the following steps:
s210, inputting a controller input signal to the improved novel basic controller 10 to obtain a controller output signal;
s220, inputting the controller output signal and the noise filtering parameter of the improved novel basic controller 10 into a lead-lag observer 20 to obtain an observer output signal;
s230, inputting the controller input signal and the observer output signal to the high-frequency noise power gain calculation device 30 to obtain a second high-frequency noise power gain;
s240, inputting a preset high-frequency noise power gain and the second high-frequency noise power gain to the comparator 41 to obtain a comparison signal;
s250, inputting the comparison signal to the non-linear integral control device 42 to obtain an integral control signal;
s260, inputting the noise filtering parameter and the integral control signal to the multiplier 50 to obtain an inertia lag time constant specification, and inputting the inertia lag time constant specification to the lead-lag observer 20.
In the embodiment of the present invention, the nonlinear integral control device 42 includes a TI input terminal for acquiring a constant 1 and an OTC input terminal for acquiring a start-stop signal.
In the embodiment of the present invention, the control of improving the high-frequency noise power gain of the novel basic controller 10 mainly includes: a feedback process control procedure, a start/stop procedure, and a feedback process control procedure are constructed.
(one) construction of a feedback Process control Process
1) The advance/retard observer input signal ISINFC:S(t) IS connected to the IS: a input of said high frequency noise power gain calculation. (ii) applying the advance/retard observer output signal, OSL/L:O(t) IS connected to the IS: B input of said high frequency noise power gain calculation. (ii) obtaining the second high frequency noise power gain, HFNPG, at the output of the high frequency noise power gain calculation.
2) The preset number of given high frequency noise power gains, HFNPGG, is connected to the positive input terminal of the comparator 41. The second high frequency noise power gain, HFNPG, s (t) is connected to the negative input of the comparator 41. At the output of the comparator 41 a comparison signal S is obtainedC(t)。
3) Comparing the comparison signal, i.e. SC(t) is connected to the input of said bidirectional square root operation. Obtaining a bidirectional square root operation signal, namely S, at the bidirectional square root operation output endBSRO(t)。
4) The bidirectional square root operation signal is SBSRO(t) is connected to the input of the integral control. Obtaining an integral control signal, S, at an output of the integral controlIC(t)。
5) Integrating the control signal, i.e. SIC(T) is connected to a first input of said multiplication, and said noise filter 18 parameter, TNFPTo a second input of said multiplication. The given inertial lag time constant, iltcg (t), is obtained at the output of the multiplier 50.
6) The noise filter 18 parameter, TNFPLTCG input to the lead/lag observer for giving the lead time constant, TLLI.e. TLL＝TNFPThe purpose is to accurately observe the noise filter 18 input signal.
7) Connecting the given inertial lag time constant ILTCG (T) to the ILTCG input of the lead/lag observer for giving the inertial lag time constant TILLI.e. TILL＝ILTCG(t)。
(II) Start/stop procedure
1) Setting a stop state, namely SS is 0, the feedback process control stops working, and the integral control signal is SIC(t) 1, and the inertia lag time constant is given as iltcg (t) SIC(t)TNFP＝TNFP。
2) Setting a start state, i.e., SS is 1, the feedback process control starts to operate, and the inertia lag time constant is given, i.e., iltcg (t) is SIC(t)TNFP。
(III) feedback Process control Process
In the starting state, namely SS is 1, the inertia lag time constant given value ILTCG (T) is used as a control quantity through the feedback process control to control the inertia lag time constant TILLBy means of, i.e. TILLAnd controlling the output of the lead/lag observer to be higher than the second high frequency noise power gain, i.e., HFNPG, which is the input of the novel improved basic controller 10, s (t) to be higher than the predetermined number of high frequency noise power gains, i.e., HFNAGG.
Due to the instability of the noise disturbance signal, after the feedback process control enters a steady state, the given inertial lag time constant, i.e., ILTCG (t), will fluctuate around its Average Value (AV), which is expressed in s by ILTCG: AV.
Using the average value of ILTCG (T), ILTCG AV, for reference in the high frequency noise power gain control of the improved novel basic controller 10, e.g. manually setting the TNFPAV, the improved new base controller 10 is manually controlled at the high frequency noise power gain setting, HFNPGG.
To further illustrate the system and method for controlling the power gain of high frequency noise provided by the present invention, a specific embodiment of the present invention is introduced as follows:
in one embodiment, the parameters of the improved basic controller 10 are mainly the following parameters: kIGC＝1，THEI＝593s，nICFA＝16，THPLO＝233s，KFGC＝10，KGC＝11，nICFB8, NFPOV 23 s; setting T of the high frequency noise power gain calculationMTSetting K of the high-pass filtering as 600sHPF30 s; DZ setting the comparator 41C0.5. Setting T of the integral controlIC1375 s; and setting the given HFNPGG of the high-frequency noise power gain of the preset number to be 6.5.
The input signal of the improved novel basic controller 10 has a trapezoidal change at a process time t of 3000s to 6000s, the amplitude of the trapezoid is 0.25, and the rising time, the flat top time and the falling time of the trapezoid are all 1000s, so as to examine the influence of the change of the input signal of the improved novel basic controller 10 on the second high-frequency noise power gain, i.e., HFNPG, (t), the inertia lag time constant, i.e., iltcg (t), and the noise filter parameter control value, i.e., nfpcv (t). The noise interference signal in the input signal of the improved novel basic controller 10 is simulated by a pseudo-random signal, and the output range of the pseudo-random signal is +/-0.01 and the unit is infinite.
At a digital discrete measurement interval of 1S, S/R is set to 1 and MT/T is set to 0 starting from a process time T to 0S. MT/T is set to 1 starting from process time T1000 s. At a digital discrete measurement interval of 1S, the start-up state is set starting from a process time t of 0S, i.e. S/R of 1. The automatic state is set at a process time T of 1000s, i.e., a/T of 1. The result of the simulation experiment of the input signal of the improved novel basic controller 10 is shown in fig. 8. The result of the simulation experiment of the output signal of the lead/lag observer is shown in fig. 9. The result of the simulation experiment of the second high-frequency noise power gain is shown in fig. 10. The result of the simulation experiment given by the inertia lag time constant is shown in fig. 11.
As shown in fig. 10, in the given process time t, which is in the range of 0 to 8000s, starting from t 0s, the second high-frequency noise power gain, i.e., HFNPG, s (t) gradually converges to the predetermined number of high-frequency noise power gains, i.e., HFNPGG, 6.5, and finally fluctuates around 6.5; as shown in fig. 11, the inertia lag time constant given value ILTCG (t) gradually decreases from 23s from t 0s, and finally fluctuates around the average value ILTCG (t), AV. Wherein ILTCG (t) is 7.2s at t, which is an average value of 820s to 8000 s.
From fig. 10 and 11, the trapezoidal change of the input signal of the new and improved basic controller 10 at the process time t of 3000s to 6000s has little influence on the second high-frequency noise power gain HFNPG(s) (t) and the inertia lag time constant iltcg (t).
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a control system and a control method for improving the high-frequency noise power gain of a novel basic controller 10, which utilize noise interference signals contained in signals to complete the on-line calculation of the second high-frequency noise power gain, and in the actual process signalsHigh frequency noise interference signals are commonly contained. The actual process signal is specifically a deviation signal of main steam pressure process given and main steam pressure process response of the thermal power generating unit. Controlling the inertia lag time constant (T) by using the inertia lag time constant (ILTCG (T)) as a control quantity through the feedback process controlILLBy means of, i.e. TILLS (t) controlling the advance/retard observer output to the predetermined high frequency noise power gain, HFNAPG, relative to the new and improved base controller 10, INFC input, i.e., the second high frequency noise power gain, HFNPG. After the feedback process control enters a steady state, the ILTCG (T) average value ILTCG AV is used as a reference for the high-frequency noise power gain control of the improved high-performance advanced observer, for example, the T is manually setNFPAV, and manually controlling the high frequency noise power gain of the improved high performance advanced observer to be HFNPGG. It takes a long time to actually acquire the ILTCG AV, and from a engineering point of view, the ILTCG (t) process may be used after the ILTCG (t) enters into a fluctuation around the ILTCG AV.
Referring to fig. 12, an embodiment of the invention provides a computer terminal device, which includes one or more processors and a memory. A memory is coupled to the processor for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement the method of controlling the power gain of high frequency noise as in any of the embodiments described above.
The processor is used for controlling the overall operation of the computer terminal equipment so as to complete all or part of the steps of the control method of the high-frequency noise power gain. The memory is used to store various types of data to support the operation at the computer terminal device, which may include, for example, instructions for any application or system operating on the computer terminal device, as well as application-related data. The Memory may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
In an exemplary embodiment, the computer terminal Device may be implemented by one or more Application Specific 1 integrated Circuit (AS 1C), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is configured to perform the above-mentioned control method for high frequency noise power gain, and achieve the technical effects consistent with the above-mentioned systems.
In another exemplary embodiment, there is also provided a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the method of controlling the power gain of high frequency noise in any of the above embodiments. For example, the computer readable storage medium may be the above-mentioned memory including program instructions executable by a processor of a computer terminal device to perform the above-mentioned control method of high frequency noise power gain and achieve the technical effects consistent with the above-mentioned system.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (8)

1. A system for controlling power gain of high frequency noise, comprising:
the improved novel basic controller is used for acquiring a controller input signal and outputting a controller output signal; the improved novel basic controller comprises: the device comprises an input gain control module, an adder, a first inertia combination filter, a subtracter, a feedback gain control module, a second inertia combination filter, a gain compensation module and a noise filter;
the parameter expression of the improved novel basic controller is as follows:
INFC＝KIGCHEI(s)NF(s),
Figure FDA0003638768490000011
Figure FDA0003638768490000012
Figure FDA0003638768490000013
KGC＝1+KFGC,
Figure FDA0003638768490000014
Figure FDA0003638768490000015
wherein INFC(s) is the transfer function of the improved novel basic controller; kIGCIs the gain of the input gain control module; HEI(s) is the transfer function of the high-efficiency integrator; ICFA(s) is a transfer function of the first inertial combination filter; n isICFAIs the order of the first inertial combination filter; t isHEIIs the time constant of the high efficiency integrator; HPLO(s) is the transfer function of the new base controller; kFGCFor feedback gain controlThe gain of the module; kGCIs the gain of the gain compensation module; ICFB(s) is the transfer function of the second inertial combination filter; n isICFBCombining orders of the filters for the second inertia; t isHPLOTo improve the time constant of the new base controller; NF(s) is the transfer function of the noise filter; t isNFPFiltering parameters for noise of the noise filter;
the advanced-lag observer is used for acquiring the output signal of the controller and the noise filtering parameter of the improved novel basic controller and outputting an observer output signal; the lead-lag observer comprises a lead unit and an inertial lag unit;
the parameter expression of the lead-lag observer is as follows:
L/L:O(s)＝LL(s)ILL(s),
LL(s)＝1+TLLs,TLL＝TNFP,
Figure FDA0003638768490000021
TILL＝ILTCG(t)
wherein, L/L is O(s) which is a transfer function of the advance-lag observer; LL(s) is the transfer function of the look-ahead unit; t is a unit ofLLIs the lead time constant of the lead unit; t isNFPFiltering parameters for the noise; ILL(s) is the transfer function of the inertial lag unit; t isILLIs the inertial lag time constant of the inertial lag unit; iltcg (t) is given for the inertial lag time constant;
the high-frequency noise power gain calculation device is used for acquiring the controller input signal and the observer output signal and outputting a second high-frequency noise power gain;
the parameter expression of the high-frequency noise power gain calculation device is as follows:
Figure FDA0003638768490000022
MVO:
Figure FDA0003638768490000023
HPF:
Figure FDA0003638768490000024
Figure FDA0003638768490000025
OSSO:B(t)＝[OSHPF:B(t)]2,
MVO:
Figure FDA0003638768490000026
HPF:
Figure FDA0003638768490000027
Figure FDA0003638768490000028
OSSO:A(t)＝[OSHPF:A(t)]2
wherein HFNPG (t) is the second high frequency noise power gain; l is-1Representing an inverse laplace transform; MVO, B(s), is the transfer function of the average value operation B; HPF, B(s) is the transfer function of the high-pass filter B; OSHPF:B(t) said high pass filtered B output signal; OSSO:B(t) is the output signal of the squaring operation B; IS (B), (t) IS an input signal B; MVO, A(s) is a transfer function of the average value operation A; HPF, A(s) is the transfer function of the high-pass filter A; OSHPF:A(t) is the high pass filtered A output signal; OSSO:A(t) outputting a signal for square operation A; IS (a), (t) IS an input signal A; t isMTThe average time length of MVO, B(s), MVO, A(s) is the same; t isHPFA high-pass filtering time constant common to HPF, B(s) and HPF, A(s);
the comparator is used for acquiring a preset high-frequency noise power gain setting and the second high-frequency noise power gain and outputting a comparison signal;
the nonlinear integral control device is used for acquiring the comparison signal and outputting an integral control signal; the nonlinear integral control device comprises a TI input end for acquiring a constant 1 and an OTC input end for acquiring a start-stop signal;
a multiplier for acquiring the noise filtering parameter and the integral control signal and outputting an inertial lag time constant given to the lead-lag observer.
2. The control system for power gain of high frequency noise according to claim 1,
the output end of the input gain control module is connected with the first addend of the adder; the input end of the first inertia combination filter is connected with the output end of the adder; the output end of the first inertia combination filter is connected with the second addend of the adder; the output end of the adder is connected with the subtracted end of the subtracter; the output end of the subtracter is connected with the input end of the feedback gain control module; the output end of the feedback gain control module is connected with the input end of the second inertia combination filter; the output end of the second inertia combination filter is connected with the subtracting end of the subtracter; the output end of the subtracter is connected with the input end of the gain compensation module; the output end of the gain compensation is connected with the input end of the noise filter; the noise filter is used for outputting a controller output signal.
3. The control system for high frequency noise power gain according to claim 1,
the output end of the leading unit is connected with the input end of the inertial delay unit;
the lead unit is used for acquiring the controller output signal and a lead time constant control value;
the inertial lag unit is used for acquiring the given inertial lag time constant and outputting an observer output signal.
4. The system for controlling power gain of high frequency noise according to claim 1, wherein the parameter expression of the comparator is:
Figure FDA0003638768490000041
ISG(t)＝HFNPGG,
ISF(t)＝HFNPG:S(t)
wherein S isC(t) is a comparison signal; ISG(t) is a given-end input signal; HFNPGG is preset high-frequency noise power gain setting; ISF(t) is a feedback end input signal; (t) HFNPG is the second high frequency noise power gain; DZCIs the dead band of the comparator.
5. A method for controlling power gain of high frequency noise, comprising:
inputting a controller input signal to the improved novel basic controller to obtain a controller output signal; the improved novel basic controller comprises: the device comprises an input gain control module, an adder, a first inertia combined filter, a subtracter, a feedback gain control module, a second inertia combined filter, a gain compensation module and a noise filter;
the parameter expression of the improved novel basic controller is as follows:
INFC＝KIGCHEI(s)NF(s),
Figure FDA0003638768490000042
Figure FDA0003638768490000043
Figure FDA0003638768490000044
KGC＝1+KFGC,
Figure FDA0003638768490000045
Figure FDA0003638768490000046
wherein INFC(s) is the transfer function of the improved novel basic controller; kIGCIs the gain of the input gain control module; HEI(s) is the transfer function of the high-efficiency integrator; icfa(s) is the transfer function of the first inertial combination filter; n isICFAAn order of the first inertial combination filter; t is a unit ofHEIIs the time constant of the high efficiency integrator; HPLO(s) is the transfer function of the new base controller; kFGCThe gain of the feedback gain control module; kGCIs the gain of the gain compensation module; ICFB(s) is the transfer function of the second inertial combination filter; n isICFBCombining orders of the filters for the second inertia; t isHPLOTo improve the time constant of the new base controller; NF(s) is the transfer function of the noise filter; t isNFPFiltering parameters for noise of the noise filter;
inputting the controller output signal and the noise filtering parameter of the improved novel basic controller into a lead-lag observer to obtain an observer output signal; the lead-lag observer comprises a lead unit and an inertial lag unit;
the parameter expression of the lead-lag observer is as follows:
L/L:O(s)＝LL(s)ILL(s),
LL(s)＝1+TLLs,TLL＝TNFP,
Figure FDA0003638768490000051
TILL＝ILTCG(t)
wherein, L/L is O(s) which is a transfer function of the advance-lag observer; LL(s) is the transfer function of the look-ahead unit; t isLLIs the lead time constant of the lead unit; t isNFPFiltering parameters for the noise; ILL(s) is the transfer function of the inertial lag unit; t isILLIs the inertial lag time constant of the inertial lag unit; ILTCG (t) is given as the inertial lag time constant;
inputting the controller input signal and the observer output signal to a high-frequency noise power gain calculation device to obtain a second high-frequency noise power gain; the parameter expression of the high-frequency noise power gain calculation device is as follows:
Figure FDA0003638768490000061
MVO:
Figure FDA0003638768490000062
HPF:
Figure FDA0003638768490000063
Figure FDA0003638768490000064
OSSO:B(t)＝[OSHPF:B(t)]2,
MVO:
Figure FDA0003638768490000065
HPF:
Figure FDA0003638768490000066
Figure FDA0003638768490000067
OSSO:A(t)＝[OSHPF:A(t)]2
wherein HFNPG (t) is the second high frequency noise power gain; l is-1Representing an inverse laplace transform; MVO, B(s), is the transfer function of the average value operation B; HPF, B(s) is the transfer function of the high-pass filter B; OSHPF:B(t) said high pass filtered B output signal; OSSO:B(t) is the output signal of the squaring operation B; IS (t) IS an input signal B; MVO, A(s) is a transfer function of the average value operation A; HPF, A(s) is the transfer function of the high-pass filter A; OSHPF:A(t) is the high pass filtered A output signal; OSSO:A(t) is the output signal of the square operation A; IS (a), (t) IS an input signal A; t isMTThe average time length of MVO, B(s), MVO, A(s) is the same; t isHPFA high-pass filter time constant common to HPF, B(s), and HPF, A(s);
inputting a preset high-frequency noise power gain setting and the second high-frequency noise power gain into a comparator to obtain a comparison signal;
inputting the comparison signal into a nonlinear integral control device to obtain an integral control signal; the nonlinear integral control device comprises a TI input end for acquiring a constant 1 and an OTC input end for acquiring a start-stop signal;
and inputting the noise filtering parameter and the integral control signal into a multiplier to obtain an inertia lag time constant given value, and inputting the inertia lag time constant given value into the lead lag observer.
6. The method of controlling high frequency noise power gain according to claim 5,
the output end of the input gain control module is connected with the first addend of the adder; the input end of the first inertia combination filter is connected with the output end of the adder; the output end of the first inertia combination filter is connected with the second addend of the adder; the output end of the adder is connected with the subtracted end of the subtracter; the output end of the subtracter is connected with the input end of the feedback gain control module; the output end of the feedback gain control module is connected with the input end of the second inertia combination filter; the output end of the second inertia combination filter is connected with the subtracting end of the subtracter; the output end of the subtracter is connected with the input end of the gain compensation module; the output end of the gain compensation is connected with the input end of the noise filter; the noise filter is used for outputting a controller output signal.
7. The method of controlling high frequency noise power gain according to claim 5,
the output end of the leading unit is connected with the input end of the inertial delay unit;
the lead unit is used for acquiring the controller output signal and a lead time constant control value;
the inertial lag unit is used for acquiring the given inertial lag time constant and outputting an observer output signal.
8. The method for controlling power gain of high frequency noise according to claim 5, wherein the parameter expression of the comparator is:
Figure FDA0003638768490000071
ISG(t)＝HFNPGG,
ISF(t)＝HFNPG:S(t)
wherein S isC(t) is a comparison signal; ISG(t) is a given-end input signal; HFNPGG is preset high-frequency noise power gain setting; ISF(t) is a feedback end input signal; (t) HFNPG is the second high frequency noise power gain; DZCIs the dead band of the comparator.
CN202110580724.8A 2021-05-26 2021-05-26 Control system and method for high-frequency noise power gain Active CN113189919B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110580724.8A CN113189919B (en) 2021-05-26 2021-05-26 Control system and method for high-frequency noise power gain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110580724.8A CN113189919B (en) 2021-05-26 2021-05-26 Control system and method for high-frequency noise power gain

Publications (2)

Publication Number Publication Date
CN113189919A CN113189919A (en) 2021-07-30
CN113189919B true CN113189919B (en) 2022-06-17

Family

ID=76985808

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110580724.8A Active CN113189919B (en) 2021-05-26 2021-05-26 Control system and method for high-frequency noise power gain

Country Status (1)

Country Link
CN (1) CN113189919B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105974800A (en) * 2016-07-26 2016-09-28 广东电网有限责任公司电力科学研究院 Feedback-feedforward control system
CN111697596A (en) * 2020-07-03 2020-09-22 国网安徽省电力有限公司全椒县供电公司 System for suppressing oscillation of power system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6841983B2 (en) * 2002-11-14 2005-01-11 Fyre Storm, Inc. Digital signal to pulse converter and method of digital signal to pulse conversion
US7884566B2 (en) * 2008-05-15 2011-02-08 Honeywell International Inc. Adaptive servo control system and method
CN104868487B (en) * 2015-05-07 2017-08-29 国家电网公司 Low-frequency range suppresses reinforced anti-reflective and adjusts electric system stabilizing method
CN108646598B (en) * 2018-05-04 2022-02-08 南京大学 Low-order analog feedback controller suitable for miniaturization and design method thereof
CN109062050B (en) * 2018-08-23 2021-01-26 广东电网有限责任公司 Higher-frequency disturbance observation method and device
CN109905089B (en) * 2019-01-25 2020-06-26 北京大学 High-speed composite loop controller and control method thereof
CN109901385B (en) * 2019-03-19 2023-03-17 广东电网有限责任公司 Advanced observation method and device
CN109932898B (en) * 2019-03-29 2023-01-20 广东电网有限责任公司 Adjustable advanced observation device
CN110676859B (en) * 2019-10-11 2023-08-18 中国电力科学研究院有限公司 Power system stabilizer model for suppressing global low-frequency oscillation and suppression method
CN112051730A (en) * 2020-09-16 2020-12-08 上海维宏电子科技股份有限公司 Method, structure and device for realizing active disturbance rejection improvement control based on composite tracking differentiator and storage medium
CN112104000A (en) * 2020-09-18 2020-12-18 天津理工大学 Novel double-closed-loop linear active disturbance rejection control method for energy storage grid-connected inverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105974800A (en) * 2016-07-26 2016-09-28 广东电网有限责任公司电力科学研究院 Feedback-feedforward control system
CN111697596A (en) * 2020-07-03 2020-09-22 国网安徽省电力有限公司全椒县供电公司 System for suppressing oscillation of power system

Also Published As

Publication number Publication date
CN113189919A (en) 2021-07-30

Similar Documents

Publication Publication Date Title
CN109856978B (en) Method and device for obtaining controlled object model
KR910006807A (en) Processing control unit
CN113359413B (en) Parameter adjusting system and method of actual differentiator
Ozana et al. PID controller design based on global optimization technique with additional constraints
CN113162567B (en) Design method and device of inertia combined filter and terminal equipment
CN113189919B (en) Control system and method for high-frequency noise power gain
CN113296396B (en) Automatic tracking system and method for high-frequency noise power gain
CN113325710B (en) Automatic tracking system and method for high-frequency noise amplitude gain
CN113139291B (en) Method and device for obtaining optimal sliding window filtering model of controlled process
CN113311706B (en) Automatic tracking method for high-frequency noise power gain of high-performance advanced observer
CN113300676B (en) System and method for automatically tracking noise power gain of actual differentiator
CN113311755B (en) Automatic tracking improvement method and system for high-frequency noise amplitude gain
CN113312585B (en) High-frequency noise power gain online tracking method for parameter adjustment of high-order control strategy
CN113296411B (en) Method and system for tracking high-frequency noise power gain adjustment control strategy parameters
CN113193848B (en) Online measurement method for improving high-frequency noise power gain of novel basic controller
CN114859699A (en) Design method, device, equipment and medium for accelerated engineering top-speed controller
CN113311708B (en) Method and system for tracking high-frequency noise amplitude gain adjustment control strategy parameters
CN113176456B (en) Online measuring device and method for noise interference level of second-order advanced observer
CN109062050B (en) Higher-frequency disturbance observation method and device
CN113156229B (en) Online measuring device and method for noise interference level of second-order advanced observer
Natarajan et al. Frequency response adaptation of PI controllers based on recursive least-squares process identification
CN113311699A (en) Automatic tracking method for high-frequency noise amplitude gain of high-performance advanced observer
Piccagli et al. Minimum-time feedforward technique for PID control
CN113193929B (en) Online judgment method and device for noise interference level of advanced observer
CN117873004A (en) Engineering model construction method and device of closed-loop control system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant