CN113193848B - Online measurement method for improving high-frequency noise power gain of novel basic controller - Google Patents
Online measurement method for improving high-frequency noise power gain of novel basic controller Download PDFInfo
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Abstract
The invention discloses an online measurement method for high-frequency noise power gain of an improved novel basic controller, which comprises the steps of inputting an input signal of the improved novel basic controller into the improved novel basic controller, and sequentially carrying out input gain control, adder operation, subtracter operation, gain compensation and first-order inertial filter filtering to obtain an output signal of the improved novel basic controller; the input signal of the improved novel basic controller is specifically a deviation signal of main steam pressure process given and main steam pressure process response of the thermal power generating unit; respectively inputting an output signal of the improved novel basic controller and an input signal of the improved novel basic controller into a first filter and a second filter to obtain a first filtering signal and a second filtering signal; and calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal. The invention reduces the difficulty and cost of noise power gain measurement and considers both the measurement efficiency and the accuracy of the result.
Description
Technical Field
The invention relates to the technical field of process control of thermal power generating units, in particular to an improved online measurement method for high-frequency noise power gain of a novel basic controller.
Background
In the field of thermal power unit process control, advance information of process signals, namely process response, can be obtained by advanced observation, and a key effect is played for improving the process control performance of the thermal power unit. Based on the application of advanced observation technology, the prior art provides a novel basic controller, NFC for short. The NFC is a cascade structure of a high-performance controller (HPPI for short) and a high-performance advanced observer (HPLO for short), and can make breakthrough in a constant observation mechanism and make great progress in an advanced observation mechanism.
However, due to the problem of noise interference amplification in advance observation, when the high-frequency noise interference level is high, for example, the high-frequency noise power gain is high, serious interference may be caused to the output signal of NFC, and even NFC may not work normally. Therefore, it is important to know the high frequency noise power gain of NFC in time to determine the high frequency noise interference level. However, the existing NFC has a complex structure, so that the implementation difficulty of the method for measuring the high-frequency noise power gain is high, for example, NFC must stop running during measurement, and online measurement cannot be performed; therefore, the measurement accuracy and efficiency cannot be both considered.
Disclosure of Invention
The invention aims to provide an improved online measurement method for high-frequency noise power gain of a novel basic controller, which can solve the problems that the online measurement of the high-frequency noise power gain cannot be realized in the prior art, and further the measurement difficulty is high, the cost is high, the efficiency is low and the accuracy is low.
In order to overcome the defects in the prior art, the invention provides an improved online measurement method for high-frequency noise power gain of a novel basic controller, which comprises the following steps:
inputting an input signal of the improved novel basic controller into the improved novel basic controller, and sequentially performing input gain control, adder operation, subtracter operation, gain compensation and first-order inertial filter filtering to obtain an output signal of the improved novel basic controller;
inputting the output signal of the improved novel basic controller and the input signal of the improved novel basic controller to a first filter and a second filter respectively to obtain a first filtering signal and a second filtering signal;
and calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal.
Preferably, the calculating the high-frequency noise power gain of the improved and novel basic controller according to the first filtered signal and the second filtered signal includes:
carrying out square operation and square operation after pure lag operation on the first filtering signal respectively to obtain a first result and a second result;
the first result and the second result are subjected to difference, and the difference result is integrated to obtain a third result;
performing square operation and square operation after pure lag operation on the second filtering signal respectively to obtain a fourth result and a fifth result;
subtracting the fourth result from the fifth result, and integrating the subtracted result to obtain a sixth result;
and obtaining the high-frequency noise power gain of the improved novel basic controller by carrying out quotient on the third result and the sixth result.
Preferably, the first filter and the second filter are both second-order high-pass filters, and the transfer functions thereof are respectively calculated by the following formulas:
wherein, A(s) is the transfer function of the first filter, and B(s) is the transfer function of the second filter; t is HPF s is a time constant common to the first filter and the second filter in units of s.
Preferably, the input end signal of the adder operation comprises:
the signal processed by the input gain control and the signal filtered by the output end signal of the adder through a first inertia combination filter;
wherein a transfer function of the first inertial combination filter is:
where ICFA(s) is the transfer function of the first inertial combination filter; t is HEI Is the time constant of the high-efficiency integrator and has the unit of s; n is ICFA Is the order of the first inertial combination filter.
Preferably, the input end signal of the subtractor operation comprises:
the output end signal of the adder and the output end signal of the subtracter are sequentially subjected to feedback gain control and filtering processing by a second inertia combination filter;
wherein a transfer function of the first inertial combination filter is:
wherein ICFB(s) is a transfer function of the second inertial combination filter; t is HPLO The time constant of the high-performance advanced observer is s; n is ICFB The order of the second inertia combining filter.
The invention also provides an on-line measurement system for improving the high-frequency noise power gain of the novel basic controller, which comprises the following components:
the signal acquisition module is used for inputting an input signal of the improved novel basic controller to the improved novel basic controller, and sequentially performing input gain control, adder operation, subtracter operation, gain compensation and first-order inertial filter filtering to obtain an output signal of the improved novel basic controller;
the filtering module is used for respectively inputting the output signal of the improved novel basic controller and the input signal of the improved novel basic controller into a first filter and a second filter to obtain a first filtering signal and a second filtering signal;
and the gain calculation module is used for calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal.
Preferably, the gain calculation module is further configured to,
carrying out square operation and square operation after pure lag operation on the first filtering signal respectively to obtain a first result and a second result;
subtracting the first result from the second result, and integrating the subtracted result to obtain a third result;
performing square operation and square operation after pure lag operation on the second filtering signal respectively to obtain a fourth result and a fifth result;
subtracting the fourth result from the fifth result, and integrating the subtracted results to obtain a sixth result;
and obtaining the high-frequency noise power gain of the improved novel basic controller by carrying out quotient on the third result and the sixth result.
The present invention also provides an improved and novel base controller, comprising:
the input gain control unit, the adder, the subtracter, the gain compensation unit and the first-order inertia filter are connected in sequence; wherein the content of the first and second substances,
the input signal of the input gain control unit is an input signal of an improved novel basic controller;
the output signal of the first-order inertia filter is the output signal of the improved novel basic controller.
Preferably, the improved novel basic controller further comprises a first inertia combination filter; and the input end and the output end of the first inertia combination filter are respectively connected with the output end and the input end of the adder.
Preferably, the improved and novel basic controller further comprises a feedback gain control unit, and a second inertia combination filter connected with an output end of the feedback gain control unit; wherein the content of the first and second substances,
the input end of the feedback gain control unit is connected with the output end of the subtracter;
and the output end of the second inertia combination filter is connected with the input end of the subtracter.
Compared with the prior art, the embodiment of the invention at least has the following beneficial effects:
the input signal of the improved novel basic controller is input into the improved novel basic controller, and input gain control, adder operation, subtracter operation, gain compensation and first-order inertial filter filtering are sequentially carried out to obtain the output signal of the improved novel basic controller; inputting the output signal of the improved novel basic controller and the input signal of the improved novel basic controller to a first filter and a second filter respectively to obtain a first filtering signal and a second filtering signal; and calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal. The invention improves the existing novel basic controller, realizes the online measurement of the high-frequency noise power gain, reduces the measurement difficulty and cost, and considers the measurement efficiency and the accuracy of the result.
Drawings
FIG. 1 is a schematic flow chart of a method for online measurement of high frequency noise power gain of an improved basic controller according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an on-line measurement method for high frequency noise power gain of the improved basic controller according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an improved basic controller according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the calculation of the power gain of the high frequency noise according to an embodiment of the present invention;
FIG. 5 shows simulation results of input signals of the improved basic controller according to an embodiment of the present invention;
FIG. 6 shows simulation results of output signals of the improved basic controller according to an embodiment of the present invention;
FIG. 7 shows simulation results of the high frequency noise power gain of the improved basic controller according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an on-line measurement system for high-frequency noise power gain of the improved basic controller 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 intended 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 and includes any and all possible combinations of one or more of the associated listed items.
The terms and their abbreviations of the embodiments of the present invention:
a Differentiator (D); a Second order inertial inverse model (Second order inertial inverse model, SOIIM); a Proportional-Derivative (PD) controller; a New Foundation Controller (NFC); a High performance PI controller (HPPI); a High Performance Lead Observer (HPLO); improved and new base controllers (Improved NFC, INFC); an Intelligent Gain Controller (IGC).
In a first aspect:
referring to fig. 1, an embodiment of the present invention provides an improved method for online measurement of high frequency noise power gain of a novel basic controller, including:
s10, inputting the input signal of the improved novel basic controller to the improved novel basic controller, and sequentially performing input gain control, adder operation, subtracter operation, gain compensation and first-order inertial filter filtering to obtain an output signal of the improved novel basic controller;
first, a schematic block diagram of an improved method and apparatus for online measurement of high frequency noise power gain of a novel basic controller is provided in fig. 2. As shown in the figure, the method mainly comprises three parts, wherein the first step is to obtain an output signal of the improved novel basic controller, the second step is to construct a filter, and the third step is to comprehensively calculate the power gain of the high-frequency noise according to the result of the filter. The existing NFC has the problem of noise interference amplification, when the power gain of the thermal power unit is measured, due to the fact that the structure of the NFC is complex, the measuring method is difficult to implement, and accuracy cannot be guaranteed, therefore, in step S10, noise power gain is measured firstly based on an improved novel basic controller (INFC), and meanwhile, an input signal of the improved novel basic controller is specifically a deviation signal of main steam pressure process setting and main steam pressure process response of the thermal power unit.
In one embodiment, an internal structure of the improved basic controller is provided, as shown in fig. 3, after the acquired signal source is input to the improved basic controller, the gain control unit first performs intelligent control of the gain of the input signal, where the gain control is mainly implemented by an Intelligent Gain Controller (IGC). It should be noted that the gain controller is actually one of dynamic processors. The gain of the amplifier is changed along with the change of the signal, a negative feedback circuit is adopted between the stages of the amplifier, the input large signal is amplified by the amplifier and then possibly causes distortion at the output end, the gain of the amplifier stage can be reduced by adopting negative feedback, and the input small signal can weaken the negative feedback quantity through the negative feedback circuit in order to obtain better signal-to-noise ratio at the output end, so that the gain of the amplifier stage is improved, and the phenomenon that the low end and the high end of a frequency response curve are reduced is changed.
In one embodiment, the output signal of the IGC output terminal enters the adder, and then the output signal of the adder is filtered by the first inertia combination filter, i.e. the inertia combination filter a, and then fed back to the input terminal of the adder, and a further processing signal is obtained through addition operation.
In one embodiment, the added signal is input to the subtractor as an input signal, and the output signal of the subtractor is fed back to the subtractor after being adjusted by feedback gain control and filtered by the second inertia combination filter, i.e., the inertia combination filter B, and then the signal is subtracted to obtain a further processed signal.
In one embodiment, the output signal of the subtractor is used as the input signal of the gain compensation unit, and the gain compensation functions as: and performing compensation on the signals subjected to gain control, addition and subtraction to ensure the accuracy of subsequent measurement data. After gain compensation, the signal enters a first-order inertial filter for filtering, and the filtered signal is used as an output signal of the improved novel basic controller for measurement in subsequent steps.
Specifically, a calculation formula of parameters involved in the above process is given:
in formula (1), infc(s) is a transfer function of the improved novel basic controller;
K IGC is the gain of the Input Gain Control (IGC) in dimensionless units;
HEI(s) is the transfer function of the high-efficiency integrator (HEI);
ICFA(s) is the transfer function of the Inertial Combination Filter A (ICFA);
n ICFA the order of the inertia combination filter A is represented by dimensionless units;
T HEI is the time constant of the high-efficiency integrator and has the unit of s;
HPLO(s) is the transfer function of the high performance lead observer;
K FGC is the gain of Feedback Gain Control (FGC) in dimensionless units;
K GC is the gain of Gain Compensation (GC) in dimensionless units, and K GC ＝K FGC +1；
ICFB(s) is the transfer function of Inertial Combination Filter B (ICFB);
n ICFB the order of the inertia combination filter B is represented by dimensionless units;
T HPLO the time constant of the high-performance advanced observer is s;
FOIF(s) is the transfer function of a First Order Inertial Filter (FOIF);
T FOIF is the time constant of the first order inertial filter in units of s.
S20, inputting the output signal of the improved novel basic controller and the input signal of the improved novel basic controller to a first filter and a second filter respectively to obtain a first filtering signal and a second filtering signal;
in this step, the signal is mainly filtered, and first a first filter (high pass filter a, HPF: a) and a second filter (high pass filter B, HPF: B) are constructed, wherein the calculation formula of the high pass filter A, B is:
wherein, A(s) is the transfer function of the first filter, and B(s) is the transfer function of the second filter; t is HPF s is a time constant common to the first filter and the second filter in units of s. The high-pass filter A and the high-pass filter B have the same structure and parameters and both adopt a second-order high-pass filter (SOHPF) form.
Specifically, the steps of obtaining the high-pass filtered signal are as follows:
(1) and (3) connecting the output signal of the improved novel basic controller to the input end of the high-pass filter A, obtaining a high-pass filtering signal A (HPFS: A) at the output end of the high-pass filter A, namely taking out a high-frequency noise signal in the output signal of the improved novel basic controller, and expressing the high-pass filtering signal A by using the HPFS: A (t), wherein the unit is dimensionless.
(2) And (3) connecting the input signal of the improved novel basic controller to the input end of the high-pass filter B, obtaining a high-pass filtering signal B (HPFS: B) at the output end of the high-pass filter B, namely taking out a high-frequency noise signal in the input signal of the improved novel basic controller, and expressing the high-pass filtering signal B by using the HPFS: B (t), wherein the unit is dimensionless.
And S30, calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal.
This step is mainly to improve the high frequency noise power gain of the novel basic controller, please refer to fig. 4, fig. 4 shows a schematic diagram of the calculation of the high frequency noise power gain: and accessing the high-pass filtering signal A to an input A for calculating the high-frequency noise power gain, and accessing the high-pass filtering signal B to an input B for calculating the high-frequency noise power gain. And obtaining a calculation result of the high-frequency noise power gain of the high-pass filtering signal A relative to the high-pass filtering signal B through the calculation of the high-frequency noise power gain, and outputting the calculation result of the high-frequency noise power gain at an output end of the calculation of the high-frequency noise power gain.
Specifically, the high-pass filtered signal a is connected to an input a of the high-frequency noise power gain calculation, and the high-pass filtered signal B is connected to an input B of the high-frequency noise power gain calculation.
And obtaining a calculation result of the high-frequency noise power gain of the high-pass filtering signal A relative to the high-pass filtering signal B through the calculation of the high-frequency noise power gain, and outputting the calculation result of the high-frequency noise power gain at an output end of the calculation of the high-frequency noise power gain.
Decomposing the formula (3) to obtain a formula (4):
wherein, hfnpg (t) is a calculation result of the high frequency noise power gain, and the unit is dimensionless. HPFS: a (t) is the high pass filtered signal a in dimensionless units. HPFS A (T-T) PL ) Is a pure lag signal of the high-pass filtered signal a in dimensionless units. HPFS B (t) is the high pass filtered signal B in dimensionless units. HPFS B (T-T) PL ) Is a pure lag signal of the high-pass filtered signal B in dimensionless units. T is a unit of PL Is a common pure lag time constant in units of s.
Specifically, the calculation formula of all parameters involved in the calculation process of the high frequency noise power gain shown in fig. 4 is as follows:
1) the high-pass filtering signal A is connected to the input end of a square operation A (SO: A), and the square operation signal A (SOS: A) is obtained at the output end of the square operation A and is expressed as:
SOS:A(t)＝[HPFS:A(t)] 2 (5)
wherein, A (t) is the square operation signal A, and the unit is dimensionless. HPFS: a (t) is the high pass filtered signal a in dimensionless units.
2) The high-pass filtered signal a is coupled to the input of a pure lag C (PL: C), at the output of which a pure lag signal C (PLs: C) is obtained, expressed as:
PLS:C(t)＝HPFS:A(t-T PL ) (6)
wherein PLS C (t) is the pure hysteresis signal C in dimensionless units. HPFS A (T-T) PL ) Is a pure lag signal of the high-pass filtered signal A, T PL Is a common pure lag time constant in units of s.
3) And connecting the pure lag signal C to the input end of a square operation C (SO: C), and obtaining a square operation signal C (SOS: C) at the output end of the square operation C, wherein the expression is as follows:
SOS:C(t)＝[PLS:C(t)] 2 (7)
wherein, SOS, C (t) is the square operation signal C, and the unit is dimensionless. PLS C (t) is the pure hysteresis signal C in dimensionless units.
4) The square operation signal A is connected to the addition input end of an algebraic operation A (AO: A), the square operation signal C is connected to the subtraction input end of the algebraic operation A, and an algebraic operation signal A (AOS: A) is obtained at the output end of the algebraic operation A and is expressed as:
AOS:A(t)＝SOS:A(t)-SOS:C(t) (8)
wherein, A (t) is the algebraic operation signal A, and the unit is dimensionless. SOS (A), (t) is the square operation signal A, and the unit is dimensionless. SOS (A), (t) is the square operation signal C, and the unit is dimensionless.
5) The algebraic operation signal A is connected to the input end of an integral operation A (IO: A), and the integral operation signal A (IOS: A) is obtained at the output end of the integral operation A and expressed as:
and IOS (A), (t) is the integral operation signal A, and the unit is dimensionless. AOS (A), (t) is the algebraic operation signal A, and the unit is dimensionless.
6) And connecting the high-pass filtering signal B to an input end of a square operation B (SO: B), and obtaining a square operation signal B (SOS: B) at an output end of the square operation B, wherein the expression is as follows:
SOS:B(t)＝[HPFS:B(t)] 2 (10)
wherein, SOS, B (t) is the square operation signal B, and the unit is dimensionless. HPFS: B (t) is the high pass filtered signal B in dimensionless units.
7) The high-pass filtered signal B is coupled to the input of a pure lag D (PL: D), at the output of which a pure lag signal D (PLs: D) is obtained, expressed as:
PLS:D(t)＝HPFS:B(t-T PL ) (11)
wherein PLS: D (t) is the pure hysteresis signal D in dimensionless units. HPFS B (T-T) PL ) Is a pure lag signal of the high-pass filtered signal B, T PL Is a common pure lag time constant in units of s.
8) The pure lag signal D is connected to the input of a squaring operation D (SO: D), at the output of which a squaring operation signal D (SOs: D) is obtained, expressed as:
SOS:D(t)＝[PLS:D(t)] 2 (12)
wherein, SOS, D (t) is the square operation signal D, and the unit is dimensionless. PLS D (t) is the pure hysteresis signal D in dimensionless units.
9) The square operation signal B is connected to the addition input end of an algebraic operation B (AO: B), the square operation signal D is connected to the subtraction input end of the algebraic operation B, and an algebraic operation signal B (AOS: B) is obtained at the output end of the algebraic operation B and is expressed as:
AOS:B(t)＝SOS:B(t)-SOS:D(t) (13)
wherein, AOS, B and (t) are the algebraic operation signal B, and the unit is dimensionless. SOS (B), (t) is the square operation signal B, and the unit is dimensionless. SOS (D), (t) is the square operation signal D, and the unit is dimensionless.
10) And accessing the algebraic operation signal B to an input end of an integral operation B (IO: B), and obtaining the integral operation signal B (IOS: B) at an output end of the integral operation B, wherein the expression is as follows:
and IOS (B), (t) is the integral operation signal B, and the unit is dimensionless. And B (t) is the algebraic operation signal B with dimensionless unit.
11) Accessing the integration operation signal A to a dividend input end of a Division Operation (DO), accessing the integration operation signal B to a divisor input end of the division operation, and obtaining a high-frequency noise power gain calculation result at an output end of the division operation, wherein the high-frequency noise power gain calculation result is expressed as:
wherein, hfnpg (t) is a calculation result of the high frequency noise power gain, and the unit is dimensionless. IOS (A), (t) is the integral operation signal A, and the unit is dimensionless. IOS is the integral operation signal B, and the unit is dimensionless.
The method provided by the embodiment of the invention improves the existing novel basic controller, realizes the online measurement of the high-frequency noise power gain, reduces the measurement difficulty and cost, and considers the measurement efficiency and the accuracy of the result.
In a second aspect:
to aid understanding, a specific set of parameters is given in one embodiment, and the high frequency noise power gain calculation is performed: k IGC ＝1，T HEI ＝593s，n ICFA ＝16，T HPLO ＝233s，K FGC ＝10，K GC ＝11，n ICFB ＝16，T FOIF 23 s. Setting a common time constant of the high-pass filter A and the high-pass filter B as follows: t is HPF 30 s. Setting parameters of the high-frequency noise power gain calculation as follows: t is a unit of PL 1000 s. And simulating a noise interference signal in the input signal of the common PID controller by using a pseudo-random signal, wherein the output range of the pseudo-random signal is +/-0.01, and the unit is dimensionless.
Furthermore, the input signal of the improved novel basic controller has a trapezoidal change within a process time t of 3000 s-6000 s, 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 on the calculation result of the high-frequency noise power gain of the improved novel basic controller. Using IS INFC (t) expressing the improved novel base controller input signal in dimensionless units. By OS INFC(t) Expressing the output signal of the improved novel basic controller, and the unit is dimensionless.
The simulation experiment result of the input signal of the improved novel basic controller is obtained when the digital discrete calculation interval is 1s, and is shown in fig. 5. The result of the simulation experiment of the output signal of the improved novel basic controller is shown in fig. 6. The result of the simulation experiment of the high-frequency noise power gain of the improved novel basic controller is shown in fig. 7, wherein the simulation experiment value of the high-frequency noise power gain of the improved novel basic controller changes in the interval of 0.7-1.3 within the given process time t range of 0-8000 s. As can be seen from fig. 7, the trapezoidal change of the input signal of the improved basic controller at the process time t of 3000s to 6000s has no significant effect on the calculation result of the high-frequency noise power gain of the improved basic controller. Therefore, the embodiment can continuously provide the online measurement result of the high-frequency noise power gain of the improved novel basic controller, and has a good significance for guiding the online parameter adjustment of the improved novel basic controller. And has no influence on the online work of the improved novel basic controller, and does not need to apply noise interference excitation to the input of the improved novel basic controller.
In a third aspect:
referring to fig. 8, an embodiment of the present invention further provides an improved on-line measurement system for high-frequency noise power gain of a novel basic controller, including:
the signal acquisition module 01 is used for inputting an input signal of the improved novel basic controller into the improved novel basic controller, and sequentially performing input gain control, adder operation, subtracter operation, gain compensation and first-order inertial filter filtering to obtain an output signal of the improved novel basic controller;
the filtering module 02 is configured to input the output signal of the improved novel base controller and the input signal of the improved novel base controller to a first filter and a second filter, respectively, so as to obtain a first filtered signal and a second filtered signal;
and the gain calculation module 03 is configured to calculate a high-frequency noise power gain of the improved and novel basic controller according to the first filtered signal and the second filtered signal.
The device provided by the embodiment of the invention is improved on the basis of the existing novel basic controller, realizes the online measurement of the high-frequency noise power gain, reduces the measurement difficulty and cost, and considers the measurement efficiency and the result accuracy.
In a fourth aspect:
referring to fig. 3, an embodiment of the present invention further provides an improved basic controller, including:
the input gain control unit, the adder, the subtracter, the gain compensation unit and the first-order inertia filter are connected in sequence; wherein the content of the first and second substances,
the input signal of the input gain control unit is an input signal of an improved novel basic controller;
the output signal of the first-order inertia filter is the output signal of the improved novel basic controller.
Further, the improved novel basic controller further comprises a first inertia combination filter; and the input end and the output end of the first inertia combination filter are respectively connected with the output end and the input end of the adder.
Further, the improved novel basic controller also comprises a feedback gain control unit and a second inertia combination filter connected with the output end of the feedback gain control unit; wherein, the first and the second end of the pipe are connected with each other,
the input end of the feedback gain control unit is connected with the output end of the subtracter;
and the output end of the second inertia combination filter is connected with the input end of the subtracter.
In a fifth aspect:
an embodiment of the present invention further provides a computer terminal device, including:
one or more processors;
a memory coupled to the processor for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method for online measurement of high frequency noise power gain for an improved new base controller as 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 online measurement method for the high-frequency noise power gain of the improved novel basic controller. The memory is used to store various types of data to support the operation at the computer terminal device, which data may include, for example, instructions for any application or method operating on the computer terminal device, as well as application-related data. The Memory may be implemented by any type or combination of volatile and non-volatile Memory devices, 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.
The computer terminal Device may be implemented by one or more Application Specific1 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 used to perform the online measurement method for improving the high frequency noise power gain of the novel basic controller according to any one of the embodiments described above, and achieve the technical effects consistent with the above methods.
An embodiment of the present invention further provides a computer readable storage medium comprising program instructions, which when executed by a processor, implement the steps of the method for online measurement of high frequency noise power gain of an improved new base controller as described in any of the above embodiments. For example, the computer readable storage medium may be the above memory including program instructions executable by the processor of the computer terminal device to perform the method for online measurement of the high frequency noise power gain of the improved novel basic controller according to any of the above embodiments, and achieve the technical effects consistent with the above method.
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 (7)
1. An improved on-line measurement method for high-frequency noise power gain of a novel basic controller is characterized by comprising the following steps:
the novel basic controller input signal of improvement is inputed to the novel basic controller of improvement, obtains improving novel basic controller output signal, include:
the input signal of the improved novel basic controller enters input gain control;
inputting the gain-controlled signal into an adder;
the output signal of the adder is fed back to the input end of the adder through the first inertia combination filter, and a processing signal of the adder is obtained after addition operation;
the processing signal of the adder enters a subtracter, and the output signal of the subtracter is subjected to feedback gain control;
the signal after the gain control is fed back to the input end of the subtracter through a second inertia combination filter, and a processing signal of the subtracter is obtained after subtraction operation;
performing gain compensation on a processing signal of the subtracter; the signal after gain compensation is filtered by a first-order inertia filter to obtain an output signal of the improved novel basic controller;
inputting the output signal of the improved novel basic controller and the input signal of the improved novel basic controller to a first filter and a second filter respectively to obtain a first filtering signal and a second filtering signal;
calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal, and the method comprises the following steps:
carrying out square operation and square operation after pure lag operation on the first filtering signal respectively to obtain a first result and a second result;
subtracting the first result from the second result, and integrating the subtracted result to obtain a third result;
performing square operation and square operation after pure lag operation on the second filtering signal respectively to obtain a fourth result and a fifth result;
subtracting the fourth result from the fifth result, and integrating the subtracted results to obtain a sixth result;
and obtaining the high-frequency noise power gain of the improved novel basic controller by performing quotient on the third result and the sixth result.
2. The method for on-line measurement of the high-frequency noise power gain of the improved and novel basic controller as claimed in claim 1, wherein the first filter and the second filter are both second-order high-pass filters, and the calculation formulas of the transfer functions are respectively:
wherein, A(s) is the transfer function of the first filter, B(s) is the transfer function of the second filter; t is HPF s is a time constant common to the first filter and the second filter, and has a unit of s.
3. The method for on-line measurement of high frequency noise power gain of an improved new base controller as claimed in claim 1, wherein the transfer function of the first inertial combination filter is:
where ICFA(s) is the transfer function of the first inertial combination filter; t is HEI Is the time constant of the high-efficiency integrator and has the unit of s; n is ICFA Is the order of the first inertia combining filter.
4. The method for on-line measurement of high frequency noise power gain of an improved and novel basic controller according to claim 1, wherein the transfer function of the second inertia combination filter is:
wherein ICFB(s) is a transfer function of the second inertial combination filter; t is a unit of HPLO The time constant of the high-performance advanced observer is s; n is ICFB The order of the second inertia combining filter.
5. An improved on-line measurement system for high frequency noise power gain of a novel basic controller, comprising:
the signal acquisition module is used for inputting the input signal of the improved novel basic controller to obtain the output signal of the improved novel basic controller, and comprises: the input signal of the improved basic controller enters input gain control; inputting the gain-controlled signal into an adder; the output signal of the adder is fed back to the input end of the adder through the first inertia combination filter, and a processing signal of the adder is obtained after addition operation; the processing signal of the adder enters a subtracter, and the output signal of the subtracter is subjected to feedback gain control; the signal after the gain control is fed back to the input end of the subtracter through a second inertia combination filter, and a processing signal of the subtracter is obtained after subtraction operation; performing gain compensation on a processing signal of the subtracter; the signal after gain compensation is filtered by a first-order inertia filter to obtain an output signal of the improved novel basic controller;
the filtering module is used for respectively inputting the output signal of the improved novel basic controller and the input signal of the improved novel basic controller into a first filter and a second filter to obtain a first filtering signal and a second filtering signal;
the gain calculation module is used for calculating the high-frequency noise power gain of the improved novel basic controller according to the first filtering signal and the second filtering signal; the first filtering signal is further used for respectively carrying out square operation and square operation after pure lag operation to obtain a first result and a second result; the first result and the second result are subjected to difference, and the difference result is integrated to obtain a third result; performing square operation and square operation after pure lag operation on the second filtering signal respectively to obtain a fourth result and a fifth result; subtracting the fourth result from the fifth result, and integrating the subtracted results to obtain a sixth result; and obtaining the high-frequency noise power gain of the improved novel basic controller by carrying out quotient on the third result and the sixth result.
6. An improved and novel basic controller, comprising:
the input gain control unit, the adder, the subtracter, the gain compensation unit and the first-order inertia filter are connected in sequence; wherein the content of the first and second substances,
the input signal of the input gain control unit is an input signal of an improved novel basic controller;
the output signal of the first-order inertia filter is the output signal of the improved novel basic controller; wherein the content of the first and second substances,
the improved novel basic controller also comprises a feedback gain control unit and a second inertia combined filter connected with the output end of the feedback gain control unit; wherein the content of the first and second substances,
the input end of the feedback gain control unit is connected with the output end of the subtracter;
and the output end of the second inertia combination filter is connected with the input end of the subtracter.
7. The improved new base controller as set forth in claim 6, further including a first inertial combination filter; and the input end and the output end of the first inertia combination filter are respectively connected with the output end and the input end of the adder.
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