CN113156920B - Method, device, equipment and medium for detecting noise interference of PD controller - Google Patents
Method, device, equipment and medium for detecting noise interference of PD controller Download PDFInfo
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a method, a device, equipment and a medium for detecting noise interference of a PD controller, which comprise the following steps: acquiring first noise interference data and second noise interference data, wherein the first noise interference data obtain the second noise interference data through a PD controller to be detected; calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain; and determining the noise interference state of the PD controller to be detected through the noise power gain quantity. The method effectively solves the problem that the noise interference level of the PD controller cannot be judged on line, and has no influence on the on-line work of the PD controller in the judging process.
Description
Technical Field
The invention relates to the technical field of thermal power unit process control, in particular to a method, a device, equipment and a medium for detecting noise interference of a PD controller.
Background
In the field of process control of thermal power generating units, proportional-Integral-Derivative (PID) controllers, i.e., PID controllers, are widely used, and PID controllers also include Proportional-Derivative (PD) controllers, i.e., PD controllers. The PD controller provides a basic advanced observation mechanism, and the PD controller has the problem of noise interference amplification. When the gain of the proportional control (Proportional control, PC) in the PD controller is too high, the problem of large noise disturbance amplification is also caused. At high Noise-to-interference levels, such as high Noise Power Gain (NPG), serious interference may be caused to the output signal of the PD controller, or even the PD controller may not function properly. It can be seen that in engineering, the problem of online judgment of the noise interference level of the PD controller needs to be solved first.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for detecting noise interference of a PD controller, which can effectively solve the problem that the noise interference level of the PD controller cannot be judged on line.
The invention provides a method for detecting noise interference of a PD controller, which comprises the following steps:
acquiring first noise interference data and second noise interference data, wherein the first noise interference data obtain the second noise interference data through a PD controller to be detected;
calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain;
and determining the noise interference state of the PD controller to be detected through the noise power gain quantity.
As an improvement of the above solution, the method acquires the first noise interference data by the following steps:
acquiring random noise interference data according to the pseudo-random number function;
and calculating according to the random noise interference data, the preset proportional adjustment gain and the noise interference data adjustment gain to obtain the first noise interference data.
As an improvement of the above solution, the first noise interference data is obtained by the PD controller to be detected, and the second noise interference data specifically includes:
calculating the first noise interference data according to a proportional control transfer function to obtain third noise interference data;
calculating the first noise interference data according to a differential control transfer function to obtain fourth noise interference data;
and carrying out addition operation on the third noise interference data and the fourth noise interference data to obtain the second noise interference data.
As an improvement of the above solution, the calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain amount specifically includes:
respectively squaring the first noise interference data and first noise interference lag data corresponding to the first noise interference data to respectively obtain corresponding calculated first noise interference data and calculated first noise interference lag data;
subtracting the calculated first noise interference data from the calculated first noise interference lag data to obtain fifth noise interference data;
integrating the fifth noise interference data to obtain sixth noise interference data;
respectively squaring the second noise interference data and second noise interference lag data corresponding to the second noise interference data to respectively obtain corresponding calculated second noise interference data and calculated second noise interference lag data;
subtracting the calculated second noise interference data from the calculated second noise interference lag data to obtain seventh noise interference data;
integrating the seventh noise interference data to obtain eighth noise interference data;
and dividing the sixth noise interference data and the eighth noise interference data to obtain the noise power gain.
As an improvement of the above scheme, the method acquires the PD controller to be detected by the following steps:
and the PD controller to be detected is constructed according to the working parameters of the original PD controller.
As an improvement of the above solution, the operating parameters include: the gain of the differential control, the differential time constant of the differential control, the gain of the proportional control, the differential control transfer function, and the proportional control transfer function.
As an improvement of the above solution, the determining, by the noise power gain amount, the noise interference state of the PD controller to be detected specifically includes:
judging whether the noise power gain is smaller than a preset noise interference threshold value or not;
when the judgment result is smaller than the preset noise interference threshold, the noise interference state of the PD controller to be detected is small in noise interference;
and when the judging result is not smaller than the preset noise interference threshold, the noise interference state of the PD controller to be detected is that the noise interference is large.
The invention also provides a device for detecting noise interference of the PD controller, which comprises:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring first noise interference data and second noise interference data, and the first noise interference data is used for acquiring the second noise interference data through a PD controller to be detected;
the calculation module is used for calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain;
and the detection module is used for determining the noise interference state of the PD controller to be detected through the noise power gain quantity.
The invention also provides a noise interference detection device of the PD controller, which comprises a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the noise interference detection method of the PD controller is realized when the processor executes the computer program.
The invention also provides a storage medium, which comprises a stored computer program, wherein when the computer program runs, equipment where the computer readable storage medium is located is controlled to execute the method for detecting the noise interference of the PD controller.
Compared with the prior art, the method, the device, the equipment and the medium for detecting the noise interference of the PD controller disclosed by the embodiment of the invention calculate the first noise interference data and the second noise interference data obtained by the PD controller to be detected through the preset noise power gain model to obtain the noise power gain, so that the noise interference level of the PD controller can be judged on line, the interference state of the PD controller is determined through the condition of the noise power gain, and the problem that the PD controller cannot work due to noise is further avoided.
Drawings
Fig. 1 is a flowchart of a method for detecting noise interference of a PD controller according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of acquiring the first noise interference data according to an embodiment of the present invention;
fig. 3 is a schematic diagram of obtaining, by a PD controller to be detected, first noise interference data according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of step S20 according to an embodiment of the present invention;
fig. 5 is a diagram of simulation experiment results of input signals of a PD controller to be detected according to an embodiment of the present invention;
fig. 6 is a diagram of simulation experiment results of an output signal of a PD controller to be detected according to an embodiment of the present invention;
fig. 7 is a diagram of simulation experiment results of noise power gain of a PD controller to be detected according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a noise interference detection device of a PD controller according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a noise interference detection device of a PD controller according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a method for detecting noise interference of a PD controller according to an embodiment of the present invention includes:
s10, acquiring first noise interference data and second noise interference data, wherein the first noise interference data is obtained through a PD controller to be detected.
And S20, calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain.
And S30, determining the noise interference state of the PD controller to be detected through the noise power gain quantity.
In this embodiment, the input signal of the PD controller to be detected is specifically a deviation signal of boiler water level setting and boiler water level process response of the thermal power generating unit.
It should be noted that, the PD controller to be detected is constructed according to the working parameters of the original PD controller. The original PD controller is the PD controller which is actually used. Wherein, the working parameters include: the gain of the differential control, the differential time constant of the differential control, the gain of the proportional control, the differential control transfer function, and the proportional control transfer function.
In summary, the first noise interference data and the second noise interference data obtained by the PD controller to be detected are calculated through the preset noise power gain model to obtain the noise power gain, so that the noise interference level of the PD controller can be judged online, the interference state of the PD controller is determined according to the noise power gain, and the problem that the PD controller cannot work due to noise is avoided.
As an improvement of the above solution, the method acquires the first noise interference data by the following steps:
acquiring random noise interference data according to the pseudo-random number function;
and calculating according to the random noise interference data, the preset proportional adjustment gain and the noise interference data adjustment gain to obtain the first noise interference data.
In particular, with reference to fig. 2,
in the formula (3), NJSS (t) is the first noise disturbance data. The rand () is a pseudo-random number function, and the output range is 0-32768 integer real numbers, and the unit is dimensionless. % is the remainder (Finding remainder, FR) and 200 is 20And the remainder of 0, and the output range is 0-200 integer real numbers, and the unit is dimensionless. 100 is a national fixed floating point real number, and the unit is dimensionless. K (K) FPR For a fixed proportional adjustment (Fixed proportion regulation, FPR) of gain, i.e. a preset proportional adjustment gain in dimensionless units, K is fixed FPR ＝0.01。K NJSSOR The gain of the (Noise jamming signal source output regulation, NJSSOR) is adjusted for the first noise disturbance data output in dimensionless units.
Decomposing the formula (4) as follows:
1) Obtaining a pseudo-random number function expressed as
rand() (4)
In the formula (4), rand () is a pseudo random number function, and the output range is 0-32768 integer real numbers, and the unit is dimensionless, namely random noise interference data.
2) The output of the pseudo-random number function is connected to the remainder-finding input end, and a remainder-finding signal (Finding remainder signal, FRS) is obtained at the remainder-finding output end, expressed as
FRS(t)＝rand()％200 (5)
In the formula (5), FRS (t) is the remainder signal, and the output range is 0-200 integer real numbers, and the unit is dimensionless. % 200 is the remainder of 200. rand () is the pseudorandom number function.
3) The remainder signal is connected to the subtracted input of the subtraction (Subtraction operation, SO), the state floating point real number 100 is connected to the subtracted input of the subtraction, and the subtraction signal (Subtraction operation signal, SOS) is obtained at the output of the subtraction, expressed as
SOS(t)＝FRS(t)-100 (6)
In the formula (6), SOS (t) is the subtraction signal, and the output range is + -100 floating point real numbers, and the unit is dimensionless. FRS (t) is the remainder signal.
4) The subtraction signal is connected to the input end of the fixed proportion adjustment, and a fixed proportion adjustment signal (Fixed proportion regulation signal, FPRS) is obtained at the output end of the fixed proportion adjustment, expressed as
FPRS(t)＝K FPR SOS(t) (7)
In the formula (7), FPRS (t) is the fixed proportion adjusting signal, and the output range is + -1 floating point real number, and the unit is dimensionless. K (K) FPR For the fixed ratio adjusted gain, K is fixed FPR =0.01. SOS (t) is the subtraction signal.
5) The fixed proportion adjusting signal is connected to the input end of the noise interference data output adjustment, the first noise interference data is obtained at the output end of the noise interference data output adjustment, and expressed as
NJSS(t)＝K NJSSOR FPRS(t) (8)
In the formula (8), the NJSS (t) is the first noise interference data, and the unit is dimensionless. K (K) NJSSOR And adjusting the gain for the noise interference data, wherein the unit is dimensionless. FPRS (t) is the fixed ratio adjustment signal.
As an improvement of the above solution, the first noise interference data is obtained by the PD controller to be detected, and the second noise interference data specifically includes:
calculating the first noise interference data according to a proportional control transfer function to obtain third noise interference data;
calculating the first noise interference data according to a differential control transfer function to obtain fourth noise interference data;
and carrying out addition operation on the third noise interference data and the fourth noise interference data to obtain the second noise interference data.
Wherein, referring to fig. 3, the first noise interference data of the PD controller to be detected is connected to the input terminal of the proportional control transfer function, and the output terminal of the proportional control transfer function is connected to the first input terminal of the adder (a of second, a: S). And the first noise interference data of the PD controller to be detected is connected to the input end of the differential control transfer function, and the output end of the differential control transfer function is connected to the second input end of the adder. And obtaining second noise interference data at the output end of the adder.
In particular，
In the formula (1), PD(s) is a transfer function of a PD controller to be detected; PC(s) is a proportional control transfer function. K (K) P The unit is dimensionless for the gain of the proportional control; CDC(s) is a differential control transfer function. K (K) D The unit is dimensionless for the gain of the usual differential control. T (T) D The differential time constant of the common differential control is given in s.
As an improvement of the above solution, the calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain amount specifically includes:
respectively squaring the first noise interference data and first noise interference lag data corresponding to the first noise interference data to respectively obtain corresponding calculated first noise interference data and calculated first noise interference lag data;
subtracting the calculated first noise interference data from the calculated first noise interference lag data to obtain fifth noise interference data;
integrating the fifth noise interference data to obtain sixth noise interference data;
respectively squaring the second noise interference data and second noise interference lag data corresponding to the second noise interference data to respectively obtain corresponding calculated second noise interference data and calculated second noise interference lag data;
subtracting the calculated second noise interference data from the calculated second noise interference lag data to obtain seventh noise interference data;
integrating the seventh noise interference data to obtain eighth noise interference data;
and dividing the sixth noise interference data and the eighth noise interference data to obtain the noise power gain.
Wherein, referring to FIG. 4, the noise power gain calculation is expressed as
Decomposing equation (9-1) into
In the formula (9-2), NPG (t) is a calculation result of the noise power gain amount, and the unit is dimensionless. IS: a (t) IS first noise interference data. IS: A (T-T) PL ) Is a Pure Lag (PL) signal of the first noise interference data, i.e. the first noise interference lag data. IS: B (t) IS second noise interference data. IS: B (T-T) PL ) Is a pure hysteresis signal of the second noise disturbance data, i.e. the second noise disturbance hysteresis data. T (T) PL Is a common pure lag time constant in s.
Decomposing the formula (9-2) as follows:
1) The first noise interference data is connected to the input end of square operation A (Square operation of A, SO: A), and square operation signals (Square operation signal of A, SOS: A) are obtained at the output end of the square operation, expressed as
SOS:A(t)＝[IS:A(t)] 2 (10)
SOS: A (t) is calculated first noise interference data, and the unit is dimensionless. IS: A (t) IS first noise interference data in dimensionless units.
2) The first noise interference data is connected to the input end of pure hysteresis, and a pure hysteresis signal C (Pure lag signal of C, PLS: C) is obtained at the output end of the pure delay C
PLS:C(t)＝HPFS:A(t-T PL ) (11)
Wherein PLS: C (t) is first noise interference lag data, and the unit is dimensionless. HPFS: A (T-T) PL ) For pure lag signal of first noise interference data, T PL Is of common purityHysteresis time constant in s.
3) The first noise interference lag data is connected to the input end of the square operation C, and a square operation signal is obtained at the output end of the square operation C and expressed as
SOS:C(t)＝[PLS:C(t)] 2 (12)
The SOS is calculated first noise interference lag data, and the unit is dimensionless. PDLS: C (t) is the pure hysteresis signal C in dimensionless units.
4) The calculated first noise interference data is connected to the addition input end of algebraic operation A (Algebraic operation of A, AO: A), the calculated first noise interference lag data is connected to the subtraction input end of algebraic operation A, algebraic operation signal A (Algebraic operation signal of A, AOS: A) is obtained at the output end of algebraic operation A, expressed as
AOS:A(t)＝SOS:A(t)-SOS:C(t) (13)
Wherein, AOS: A (t) is fifth noise interference data, and the unit is dimensionless. SOS: A (t) is the calculated first noise interference data, and the unit is dimensionless. SOS: C (t) is calculated first noise interference lag data, and the unit is dimensionless.
5) The fifth noise interference data is connected to the input end of an integral operation A (Integral operation of A, IO: A), and an integral operation signal A (Integral operation signal of A, IOS: A), namely sixth noise interference data, is obtained at the output end of the integral operation A, expressed as
The IOS is A (t) is sixth noise interference data, and the unit is dimensionless. AOS: A (t) is fifth noise interference data in dimensionless units.
6) The second noise interference data is connected to the input end of square operation B (Square operation of B, SO: B), and the square operation signal B (Square operation signal of B, SOS: B) is obtained at the output end of the square operation B, namely the calculated second noise interference data, expressed as
SOS:B(t)＝[HPFS:B(t)] 2 (15)
And B (t) is calculated second noise interference data, and the unit is dimensionless. HPFS: B (t) is the second noise disturbance data in dimensionless units.
7) The second noise interference data is connected to the input end of a Pure delay D (PL: D), and a Pure delay signal D (Pure lag signal of D, PLS: D), namely the second noise interference delay data, is obtained at the output end of the Pure delay D:
PLS:D(t)＝HPFS:B(t-T PL ) (16)
wherein PLS: D (t) is second noise interference lag data in dimensionless units. HPFS: B (T-T) PL ) For pure hysteresis signal of second noise interference data, T PL Is a common pure lag time constant in s.
8) The second noise interference lag data is connected to the input end of the square operation D (Square operation of D, SO: D), and a square operation signal D (Square operation signal of D, SOS: D) is obtained at the output end of the square operation D, namely the calculated second noise interference lag data is expressed as
SOS:D(t)＝[PLS:D(t)] 2 (17)
And the SOS is D (t) is calculated second noise interference lag data, and the unit is dimensionless. PDLS, D (t) is the pure hysteresis signal D, and the unit is dimensionless.
9) The calculated second noise data is connected to the addition input end of the algebraic operation B (Algebraic operation of B, AO: B), the calculated second noise interference lag data is connected to the subtraction input end of the algebraic operation B, the seventh noise interference data is obtained at the output end of the algebraic operation B, expressed as
AOS:B(t)＝SOS:B(t)-SOS:D(t) (18)
And the AOS is B (t) which is the seventh noise interference data, and the unit is dimensionless. SOS: B (t) is the calculated second noise interference data, and the unit is dimensionless. SOS: D (t) is calculated second noise interference lag data, and the unit is dimensionless.
10 The seventh noise interference data is connected to the input end of an integral operation B (Integral operation of B, IO: B), and an integral operation signal B (Integral operation signal of B, IOS: B) is obtained at the output end of the integral operation B, expressed as
And the IOS is the eighth noise interference data, and the unit is dimensionless. And the AOS is that B (t) is the seventh noise interference data, and the unit is dimensionless.
11 The integral operation signal A is connected to the divisor input end of division operation (Division operation, DO), the integral operation signal B is connected to the divisor input end of division operation, the calculation result of the noise power gain is obtained at the output end of division operation, expressed as
The NPG (t) is a calculation result of the noise power gain, and the unit is dimensionless. IOS A (t) is sixth noise interference data, and the unit is dimensionless. IOS, B (t) is eighth noise interference data, and the unit is dimensionless.
As an improvement of the above solution, the determining, by the noise power gain amount, the noise interference state of the PD controller to be detected specifically includes:
judging whether the noise power gain is smaller than a preset noise interference threshold value or not;
when the judgment result is smaller than the preset noise interference threshold, the noise interference state of the PD controller to be detected is small in noise interference;
and when the judging result is not smaller than the preset noise interference threshold, the noise interference state of the PD controller to be detected is that the noise interference is large.
In this embodiment, if the noise power gain variation range is smaller than 10, it is determined that the noise interference level of the PD controller to be detected is low. And if the noise power gain variation range is more than or equal to 10, judging that the noise interference level of the PD controller to be detected is higher.
For example, referring to fig. 5-7, the pd controller parameters are: k (K) P ＝1.25，K D ＝3，T D =50s. The PD controller to be detected is constructed according to the PD controller of the actual application, and correspondingly, parameters of the PD controller to be detected are as follows: k (K) P:S ＝K P ＝1.25，K D:S ＝K D ＝3，T D:S ＝T D =50s. K for setting the noise interference signal source NJSSOR =0.1. Setting T of the noise power gain calculation PL ＝1000s。
By IS PD:S And (t) expressing the input signal of the PD controller to be detected, wherein the unit is dimensionless. By OS PD:S And (t) expressing the output signal of the PD controller to be detected, wherein the unit is dimensionless.
And obtaining simulation experiment results of the input signals of the PD controller to be detected at the digital discrete calculation interval of 1 s. And obtaining simulation experiment results of the output signals of the PD controller to be detected. And obtaining a simulation experiment result of the noise power gain of the PD controller to be detected. In the given process time t=0-8000 s, the simulation experiment value of the noise power gain of the PD controller to be detected varies in the interval 17.4-18.2. And judging that the noise interference level of the PD controller to be detected is higher.
Referring to fig. 8, a schematic structural diagram of a noise interference detection device of a PD controller according to an embodiment of the present invention is shown.
Another embodiment of the present invention provides a noise interference detection apparatus of a PD controller, including:
an acquiring module 10, configured to acquire first noise interference data and second noise interference data, where the first noise interference data obtains the second noise interference data through a PD controller to be detected;
the calculating module 20 is configured to calculate the first noise interference data and the second noise interference data according to a preset noise power gain model, so as to obtain a noise power gain;
and the detection module 30 is used for determining the noise interference state of the PD controller to be detected through the noise power gain quantity.
According to the noise interference detection device of the PD controller, the first noise interference data and the second noise interference data obtained through the PD controller to be detected are calculated through the preset noise power gain model to obtain the noise power gain, so that the interference state of the PD controller is determined according to the condition of the noise power gain, and the problem that the PD controller cannot work due to noise is solved.
Referring to fig. 9, a schematic diagram of a noise interference detection device of a PD controller according to an embodiment of the present invention is shown. The noise interference detection apparatus of the PD controller of this embodiment includes: a processor 11, a memory 12, and a computer program stored in the memory 12 and executable on the processor 11. The processor 11, when executing the computer program, implements the steps in the above-described noise interference detection method embodiment of each PD controller, for example, the steps shown in fig. 1. Alternatively, the processor 11 may implement the functions of the modules/units in the above-described embodiments of the apparatus when executing the computer program.
The computer program may be divided into one or more modules/units, which are stored in the memory and executed by the processor to accomplish the present invention, for example. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program in a noise disturbance detection device of the PD controller.
The noise interference detection device of the PD controller can be a computing device such as a desktop computer, a notebook computer, a palm computer and a cloud server. The noise interference detection device of the PD controller may include, but is not limited to, a processor, a memory. It will be appreciated by those skilled in the art that the schematic diagram is merely an example of a noise-and-interference detection device of a PD controller, and does not constitute a limitation of the noise-and-interference detection device of a PD controller, and may include more or less components than illustrated, or may combine certain components, or different components, e.g., the noise-and-interference detection device of the PD controller may further include an input-and-output device, a network access device, a bus, etc.
The processor 11 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, which is a control center of the noise interference detection device of the PD controller, and connects the respective parts of the noise interference detection device of the entire PD controller using various interfaces and lines.
The memory 12 may be used to store the computer program and/or modules, and the processor may implement various functions of the noise interference detection device of the PD controller by running or executing the computer program and/or modules stored in the memory, and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, memory, plug-in hard disk, smart Media Card (SMC), secure Digital (SD) Card, flash Card (Flash Card), at least one disk storage device, flash memory device, or other volatile solid-state storage device.
Wherein the integrated modules/units of the noise disturbance detection device of the PD controller may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as a stand alone product. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth.
It should be noted that the above-described apparatus embodiments are merely illustrative, and the units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, in the drawings of the embodiment of the device provided by the invention, the connection relation between the modules represents that the modules have communication connection, and can be specifically implemented as one or more communication buses or signal lines. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (8)
1. A noise interference detection method of a PD controller, comprising:
acquiring first noise interference data and second noise interference data, wherein the first noise interference data obtain the second noise interference data through a PD controller to be detected;
calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain;
determining the noise interference state of the PD controller to be detected through the noise power gain;
the first noise interference data is obtained by the PD controller to be detected, and the second noise interference data specifically comprises:
calculating the first noise interference data according to a proportional control transfer function to obtain third noise interference data;
calculating the first noise interference data according to a differential control transfer function to obtain fourth noise interference data;
performing addition operation on the third noise interference data and the fourth noise interference data to obtain second noise interference data;
the calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain, specifically includes:
respectively squaring the first noise interference data and first noise interference lag data corresponding to the first noise interference data to respectively obtain corresponding calculated first noise interference data and calculated first noise interference lag data;
subtracting the calculated first noise interference data from the calculated first noise interference lag data to obtain fifth noise interference data;
integrating the fifth noise interference data to obtain sixth noise interference data;
respectively squaring the second noise interference data and second noise interference lag data corresponding to the second noise interference data to respectively obtain corresponding calculated second noise interference data and calculated second noise interference lag data;
subtracting the calculated second noise interference data from the calculated second noise interference lag data to obtain seventh noise interference data;
integrating the seventh noise interference data to obtain eighth noise interference data;
and dividing the sixth noise interference data and the eighth noise interference data to obtain the noise power gain.
2. The method for detecting noise interference of a PD controller of claim 1, wherein the method obtains the first noise interference data by:
acquiring random noise interference data according to the pseudo-random number function;
and calculating according to the random noise interference data, the preset proportional adjustment gain and the noise interference data adjustment gain to obtain the first noise interference data.
3. The method for detecting noise interference of a PD controller according to claim 1, wherein the method obtains the PD controller to be detected by:
and the PD controller to be detected is constructed according to the working parameters of the original PD controller.
4. The method for detecting noise interference of a PD controller of claim 3, wherein the operating parameters include: the gain of the differential control, the differential time constant of the differential control, the gain of the proportional control, the differential control transfer function, and the proportional control transfer function.
5. The method for detecting noise interference of a PD controller of claim 1, wherein the determining the noise interference state of the PD controller to be detected by the noise power gain amount specifically comprises:
judging whether the noise power gain is smaller than a preset noise interference threshold value or not;
when the judgment result is smaller than the preset noise interference threshold, the noise interference state of the PD controller to be detected is small in noise interference;
and when the judging result is not smaller than the preset noise interference threshold, the noise interference state of the PD controller to be detected is that the noise interference is large.
6. A noise interference detection apparatus of a PD controller, comprising:
the system comprises an acquisition module, a detection module and a control module, wherein the acquisition module is used for acquiring first noise interference data and second noise interference data, and the first noise interference data is used for acquiring the second noise interference data through a PD controller to be detected;
the calculation module is used for calculating the first noise interference data and the second noise interference data according to a preset noise power gain model to obtain a noise power gain;
the detection module is used for determining the noise interference state of the PD controller to be detected through the noise power gain;
the acquisition module is specifically configured to:
calculating the first noise interference data according to a proportional control transfer function to obtain third noise interference data;
calculating the first noise interference data according to a differential control transfer function to obtain fourth noise interference data;
performing addition operation on the third noise interference data and the fourth noise interference data to obtain second noise interference data;
the computing module is specifically configured to:
respectively squaring the first noise interference data and first noise interference lag data corresponding to the first noise interference data to respectively obtain corresponding calculated first noise interference data and calculated first noise interference lag data;
subtracting the calculated first noise interference data from the calculated first noise interference lag data to obtain fifth noise interference data;
integrating the fifth noise interference data to obtain sixth noise interference data;
respectively squaring the second noise interference data and second noise interference lag data corresponding to the second noise interference data to respectively obtain corresponding calculated second noise interference data and calculated second noise interference lag data;
subtracting the calculated second noise interference data from the calculated second noise interference lag data to obtain seventh noise interference data;
integrating the seventh noise interference data to obtain eighth noise interference data;
and dividing the sixth noise interference data and the eighth noise interference data to obtain the noise power gain.
7. A noise-plus-interference detection device of a PD controller, characterized by comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the noise-plus-interference detection method of a PD controller according to any one of claims 1 to 5 when the computer program is executed by the processor.
8. A computer readable storage medium, characterized in that the computer readable storage medium comprises a stored computer program, wherein the computer program, when run, controls a device in which the computer readable storage medium is located to perform the method for detecting noise interference of a PD controller according to any one of claims 1 to 5.
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| CN104471855A (en) * | 2012-07-12 | 2015-03-25 | Dts公司 | Loudness control with noise detection and loudness drop detection |
| CN106321248A (en) * | 2015-06-17 | 2017-01-11 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Gas turbine control method and system |
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