CN112945411A - Real-time dynamic compensation method and device for armored thermocouple temperature sensor - Google Patents
Real-time dynamic compensation method and device for armored thermocouple temperature sensor Download PDFInfo
- Publication number
- CN112945411A CN112945411A CN202110227563.4A CN202110227563A CN112945411A CN 112945411 A CN112945411 A CN 112945411A CN 202110227563 A CN202110227563 A CN 202110227563A CN 112945411 A CN112945411 A CN 112945411A
- Authority
- CN
- China
- Prior art keywords
- real
- temperature sensor
- mathematical model
- time
- dynamic compensation
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Abstract
The application provides a real-time dynamic compensation method and a real-time dynamic compensation device for an armored thermocouple temperature sensor, wherein the method comprises the following steps: constructing a complex domain mathematical model of the armored thermocouple temperature sensor; determining a time domain function of a step input signal based on the temperature change condition of a measured fluid between every two adjacent sampling moments, determining a Laplace transform result of the step input signal and taking the Laplace transform result as the input of a complex domain mathematical model, outputting the Laplace transform result of a step response signal, solving the time domain function of the step response signal and constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor, thereby carrying out real-time dynamic compensation on the temperature measurement value of each sampling moment based on the real-time dynamic compensation mathematical model, compensating the temperature measurement value of the armored thermocouple temperature sensor at each sampling moment in real time, and remarkably improving the dynamic response characteristic of the armored thermocouple temperature sensor after compensation; and the design of a control system is not restricted, and the flexibility is higher.
Description
Technical Field
The application relates to the technical field of armored thermocouples, in particular to a real-time dynamic compensation method and device of an armored thermocouple temperature sensor.
Background
The thermocouple temperature sensor is a commonly used temperature measuring device, has the characteristics of high measurement precision, wide temperature measurement range (the temperature measurement range is-270 ℃ -1300 ℃), stable performance, simple structure and capability of directly converting the temperature into the voltage, and particularly plays an important role in the field of industrial temperature measurement. In the fields of aircraft engines, high-altitude platform simulation tests and the like, in order to ensure the reliability and impact resistance of the thermocouple temperature sensor, as shown in fig. 1, an armored protective sleeve is usually introduced at the temperature measuring element end of the thermocouple temperature sensor, and the introduction of the armored protective sleeve can cause the dynamic response characteristic of the armored thermocouple temperature sensor to be slow. Since the armored thermocouple sensor is used for feedback measurement of a control system and fault diagnosis, the armored thermocouple temperature sensor is required to have a fast dynamic response characteristic, and therefore, dynamic characteristic compensation needs to be performed on the armored thermocouple temperature sensor.
In the prior art, a compensation mode for an armored thermocouple temperature sensor is mainly a lead-lag compensation mode integrated in a control system, and the compensation effect and the flexibility of the compensation mode are poor, so that the design of the control system is greatly restricted; moreover, this compensation method cannot dynamically compensate the armored thermocouple temperature sensor in real time.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a real-time dynamic compensation method and apparatus for an armored thermocouple temperature sensor, which can compensate the temperature measurement value of the armored thermocouple temperature sensor at each sampling time in real time, and the dynamic response characteristic of the armored thermocouple temperature sensor after compensation is significantly improved; and the design of a control system is not restricted, and the flexibility is higher.
In a first aspect, an embodiment of the present application provides a real-time dynamic compensation method for an armored thermocouple temperature sensor, including:
constructing a complex domain mathematical model of the armored thermocouple temperature sensor;
determining a time domain function of a step input signal based on the temperature change condition of the measured fluid between every two adjacent sampling moments, and determining a Laplace transformation result of the step input signal;
taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, outputting the Laplace transform result of the step response signal, and solving the time domain function of the step response signal;
and constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on a mathematical transformation result of the time domain function of the step response signal, so as to perform real-time dynamic compensation on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model.
In one possible embodiment, constructing a complex domain mathematical model of an armored thermocouple temperature sensor comprises:
a complex domain mathematical model of the armored thermocouple temperature sensor is constructed as a first-order inertia link.
In a possible embodiment, determining a time-domain function of the step input signal based on a temperature change condition of the measured fluid between every two adjacent sampling moments, and determining a lagrange transformation result of the step input signal comprises:
the temperature change condition of the measured fluid between every two adjacent sampling moments is approximate to a step change condition;
determining a time domain function of the step input signal based on the step change condition;
and performing Laplace transformation on the time domain function of the step input signal to obtain a Laplace transformation result of the step input signal.
In a possible embodiment, taking the result of the laplace transform of the step input signal as an input of the complex domain mathematical model, outputting the result of the laplace transform of the step response signal, and determining the time domain function of the step response signal includes:
taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, and outputting the Laplace transform result of the step response signal;
and carrying out inverse Laplace transform on the Laplace transform result of the step response signal to obtain a time domain function of the step response signal.
In one possible embodiment, the method for constructing the real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on the mathematical transformation result of the time domain function of the step response signal comprises the following steps:
performing mathematical transformation on the step input signal in the time domain function of the step response signal to obtain a temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment and a temperature measurement value at the previous sampling moment;
performing mathematical transformation on the step response signal in the time domain function of the step response signal to obtain a measured value of the armored thermocouple temperature sensor after temperature compensation at the current sampling moment and a temperature measured value at the previous sampling moment;
and constructing a real-time dynamic compensation mathematical model for calculating the measured value of the armored thermocouple temperature sensor after temperature compensation at the current sampling moment based on the mathematical transformation result of the time domain function of the step response signal.
In one possible embodiment, the real-time dynamic compensation of the temperature measurement value at each sampling time based on the real-time dynamic compensation mathematical model includes:
for each sampling moment, acquiring a temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment, a temperature measurement value at the previous sampling moment and a time constant of the complex domain mathematical model;
and aiming at each sampling moment, inputting the obtained temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment, the temperature measurement value at the previous sampling moment and the time constant of the complex domain mathematical model into the real-time dynamic compensation mathematical model, and outputting the measurement value of the armored thermocouple temperature sensor after temperature compensation at the current sampling moment, thereby carrying out real-time dynamic compensation on the temperature measurement value at the current sampling moment.
In a possible embodiment, before performing real-time dynamic compensation on the temperature measurement value at each sampling time based on the real-time dynamic compensation mathematical model, the method further includes:
the temperature measurement at each sampling instant is filtered using a butterworth filter.
In a second aspect, an embodiment of the present application further provides a real-time dynamic compensation apparatus for an armored thermocouple temperature sensor, including:
the construction module is used for constructing a complex domain mathematical model of the armored thermocouple temperature sensor;
the determining module is used for determining a time domain function of the step input signal based on the temperature change condition of the measured fluid between every two adjacent sampling moments and determining a Laplace transform result of the step input signal;
the calculating module is used for taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, outputting the Laplace transform result of the step response signal and calculating the time domain function of the step response signal;
and the compensation module is used for constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on the mathematical transformation result of the time domain function of the step response signal, so that the real-time dynamic compensation is carried out on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model.
In a third aspect, an embodiment of the present application further provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is running, the machine-readable instructions when executed by the processor performing the steps of the first aspect described above, or any possible implementation of the first aspect.
In a fourth aspect, this application further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps in the first aspect or any one of the possible implementation manners of the first aspect.
The embodiment of the application provides a real-time dynamic compensation method and a real-time dynamic compensation device for an armored thermocouple temperature sensor, which comprises the steps of firstly constructing a complex domain mathematical model of the armored thermocouple temperature sensor; secondly, because the change trend of the temperature of the measured fluid is not necessarily step change, the time interval (namely the time of one sampling) between every two adjacent sampling moments is short, and the time can be discretized, so that the temperature change of each short time interval can be regarded as step change, the input signal is determined to be a step input signal, and the Laplace transformation result of the step input signal is determined; taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model again, outputting the Laplace transform result of the step response signal, and solving the time domain function of the step response signal; and finally, constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on a mathematical transformation result of the time domain function of the step response signal, thereby carrying out real-time dynamic compensation on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model. The temperature measurement value of the armored thermocouple temperature sensor at each sampling moment can be compensated in real time, and the dynamic response characteristic of the armored thermocouple temperature sensor after compensation is remarkably improved; and the design of a control system is not restricted, and the flexibility is higher.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 shows a measurement schematic of a sheathed thermocouple temperature sensor;
FIG. 2 is a flow chart illustrating a method for real-time dynamic compensation of an armored thermocouple temperature sensor according to an embodiment of the present application;
FIG. 3 illustrates a block diagram of a real-time dynamic compensation method for an armored thermocouple temperature sensor provided by an embodiment of the present application;
FIG. 4 shows the compensation result of the real-time dynamic compensation method provided by the embodiment of the present application for the case of step change of the fluid to be measured;
FIG. 5 shows the compensation result of the real-time dynamic compensation method provided by the embodiment of the present application for the fluid to be measured in a ramping condition;
FIG. 6 shows the compensation result of the real-time dynamic compensation method provided by the embodiment of the present application for the fluid to be measured in a 2Hz sinusoidal variation;
FIG. 7 shows the compensation result of the real-time dynamic compensation method provided by the embodiment of the present application for the sinusoidal variation of the fluid to be measured at 10 Hz;
FIG. 8 illustrates the compensation results of the armored thermocouple temperature sensor measurement data provided by the embodiments of the present application;
FIG. 9 is a schematic structural diagram illustrating a real-time dynamic compensation apparatus for a sheathed thermocouple temperature sensor according to an embodiment of the present application;
fig. 10 shows a schematic structural diagram of an electronic device provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the traditional scheme, a compensation mode for an armored thermocouple temperature sensor is mainly a lead-lag compensation mode integrated in a control system, and the compensation effect and the flexibility of the compensation mode are poor, so that the design of the control system is greatly restricted; moreover, this compensation method cannot dynamically compensate the armored thermocouple temperature sensor in real time. Based on this, the embodiment of the present application provides a real-time dynamic compensation method and device for an armored thermocouple temperature sensor, which are described below by way of embodiments.
For the convenience of understanding the present embodiment, a detailed description will be given to a real-time dynamic compensation method for an armored thermocouple temperature sensor disclosed in the embodiments of the present application.
The inventors of the present application found in their studies that:
aiming at a sheathed thermocouple temperature sensor with a first-order inertia link, a complex domain mathematical model of the sheathed thermocouple temperature sensor is as follows:
wherein, Tsensor(s) a Ralsh transformation formula representing the measured temperature of the sheathed thermocouple temperature sensor, τ being the time constant of the sheathed thermocouple temperature sensor, Treal(s) represents a Laplace transform of the measured fluid temperature.
Second, assume the temperature T of the measured fluidreal(T) is a step input signal, the initial value is set to be a steady state at the moment when T is equal to 0, and the temperature measurement value of the thermocouple temperature sensor is Tsensor(0) And step the input signal Δ Treal(T) has an amplitude Δ TrealThen the step input signal is:
wherein, Delta Treal(T) represents a step input signal,. DELTA.TrealRepresenting the magnitude of the step input signal.
③ the step input signal Delta T in the above formula (2)real(t) obtaining after Ralsberg transform:
substituting the formula (3) into the formula (1) to obtain:
and (5) performing Laplace conversion on the formula (4) to obtain:
wherein, Delta Tsensor(t) represents a step response signal.
Sixthly, the real temperature T at the moment when T is 0 according to the initial valuereal(0) Temperature T acquired at time Tsensor(T) temperature T acquired at time T-0sensor(0) Determining the true temperature T of the measured fluid at time Treal(t), it is possible to obtain:
wherein, Tcompensate(T) denotes the temperature T acquired at time Tsensor(T) compensated temperature, Δ Tsensor(t)＝Tsensor(t)-Tsensor(0)，ΔTreal(t)＝Tcompensate(t)-Treal(0)。
Because the temperature measurement is generally carried out by oneStable static state is started, so that at the initial moment, the measured value and the true value of the armored thermocouple temperature sensor can be ensured to be equal, namely Treal(0)＝Tsensor(0) The above equation (6) can be converted into:
it can be seen that the step-input Laplace conversion characteristic is used in the derivation process, the response compensation effect on the dynamic change process except the step change of the temperature value to be measured cannot be compared with the step response, and the compensation effect is weak. Therefore, the formula (7) can not be completely applied to engineering practice, and can only be applied to response compensation in the step change process of the temperature value to be measured.
Based on the above findings, the embodiments of the present application propose that, since the trend of the measured fluid temperature is not necessarily a step change, the time interval between every two adjacent sampling instants (i.e. the time of one sampling) is short, and the time can be discretized, so that the temperature change of each short time interval can be regarded as a step change. Based on this, the embodiment of the present application improves the above method, specifically as follows.
Referring to fig. 2, fig. 2 is a flowchart illustrating a real-time dynamic compensation method for an armored thermocouple temperature sensor according to an embodiment of the present disclosure. As shown in fig. 2, the method may include the steps of:
s201, constructing a complex domain mathematical model of the armored thermocouple temperature sensor;
s202, determining a time domain function of the step input signal based on the temperature change condition of the measured fluid between every two adjacent sampling moments, and determining a Laplace transform result of the step input signal;
s203, taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, outputting the Laplace transform result of the step response signal, and solving the time domain function of the step response signal;
and S204, constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on the mathematical transformation result of the time domain function of the step response signal, and thus carrying out real-time dynamic compensation on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model.
In step S201, a complex domain mathematical model of the armored thermocouple temperature sensor is constructed as a first-order inertia link, which is specifically as follows:
wherein, Tsensor(s) a Ralsh transformation formula representing the measured temperature of the sheathed thermocouple temperature sensor, τ being the time constant of the sheathed thermocouple temperature sensor, Treal(s) represents a Laplace transform of the measured fluid temperature.
In this embodiment, step S202 may include the following sub-steps:
s2021, approximating the temperature change condition of the measured fluid between every two adjacent sampling moments to a step change condition;
s2022, determining a time domain function of the step input signal based on the step change condition;
s2023, performing Laplace transform on the time domain function of the step input signal to obtain a Laplace transform result of the step input signal.
In step S2021, since the trend of the temperature of the measured fluid is not necessarily a step change, the time interval between each two adjacent sampling moments is short, and the time can be discretized, so that the temperature change at each short time interval can be regarded as a step change.
In step S2022, the time domain function of the step input signal is as follows:
wherein, Delta Treal(T) represents a step input signal,. DELTA.TrealRepresenting the amplitude of a step input signal。
In step S2023, the step input signal Δ T in the above equation (9)real(t) obtaining after Ralsberg transform:
in this embodiment, step S203 may include the following sub-steps:
s2031, taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, and outputting the Laplace transform result of the step response signal;
s2032, performing inverse Laplace transform on the Laplace transform result of the step response signal to obtain a time domain function of the step response signal.
In step SS2031, the above expression (10) is substituted into the expression (8) to obtain:
in step SS2032, formula (11) is subjected to a rahrase transformation to obtain:
wherein, Delta Tsensor(t) represents a step response signal.
In this embodiment, step S204 may include the following sub-steps:
s2041, performing mathematical transformation on the step input signal in the time domain function of the step response signal to obtain a temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment and a temperature measurement value at the previous sampling moment; namely; delta Tsensor(t)＝Tsensor(t+Δt)-Tsensor(t)；
S2042, performing mathematical transformation on the step response signal in the time domain function of the step response signal to obtain the current sampling time of the armored thermocouple temperature sensorA measured value after temperature compensation at a sampling moment and a temperature true value at a previous sampling moment; namely; delta Treal(t)＝Tcompensate(t+Δt)-Treal(t)；
S2043, building a real-time dynamic compensation mathematical model for calculating the temperature compensated measured value of the armored thermocouple temperature sensor at the current sampling moment based on the mathematical transformation result of the time domain function of the step response signal.
In step S2043, based on steps S2041 and S2042, expression (12) is mathematically transformed, and:
where Δ T represents the time interval between every two adjacent sampling instants (i.e. the sampling time of a sample), Tcompensate(T + Δ T) represents the temperature compensated measurement of the sheathed thermocouple temperature sensor at the current sampling instant, Tsensor(T + Δ T) represents the temperature measurement of the sheathed thermocouple temperature sensor at the current sampling instant, Treal(T) represents the true temperature value, T, of the sheathed thermocouple temperature sensor at the previous sampling momentsensor(t) represents the temperature measurement of the sheathed thermocouple temperature sensor at the previous sampling instant.
When the temperature measurement value at the current sampling moment is compensated, the temperature measurement value at the previous sampling moment is considered to be equal to the true temperature value, namely Treal(t)＝Tsensor(t) of (d). Therefore, the above equation (13) can be converted into:
the equation (14) is a real-time dynamic compensation mathematical model for calculating the temperature compensated measurement value of the armored thermocouple temperature sensor at the current sampling time.
In this embodiment, step S204 may further include the following sub-steps:
S2044and acquiring the temperature measurement value T of the armored thermocouple temperature sensor at the current sampling moment (T + delta T) aiming at each sampling momentsensor(T + Δ T), temperature measurement T at the previous sampling instant Tsensor(t) and a time constant τ of the complex domain mathematical model;
s2045, aiming at each sampling moment, obtaining a temperature measured value T of the armored thermocouple temperature sensor at the current sampling moment (T + delta T)sensor(T + Δ T), temperature measurement T at the previous sampling instant Tsensor(T) inputting the time constant tau of the complex domain mathematical model into the real-time dynamic compensation mathematical model (14), and outputting the measured value T of the armored thermocouple temperature sensor after temperature compensation at the current sampling momentcompensate(t + Δ t) to dynamically compensate the temperature measurement value at the current sampling time in real time.
As shown in FIG. 3, on the premise that the sensor measurement value is initially accurate, the compensation result of the temperature measurement value at the current sampling time is only equal to the temperature measurement value T at the current sampling time (T + Δ T)sensor(T + Δ T), temperature measurement T at the previous sampling time Tsensor(t) and the time constant τ of the first order inertial element. If the time constant tau of the first-order inertia element is known, the compensation result of the temperature measurement value at the current sampling moment is only equal to the temperature measurement value T at the current sampling moment (T + delta T)sensor(T + Δ T), and the temperature measurement T at the previous sampling time Tsensor(t) is related. In the embodiment, the design of the control system is not restricted by the compensation mode, and the flexibility is high.
In a possible embodiment, before performing real-time dynamic compensation on the temperature measurement value at each sampling time based on the real-time dynamic compensation mathematical model, the method further includes: the temperature measurement at each sampling instant is filtered using a butterworth filter.
Specifically, the Butterworth filter may be formulated as a square of amplitude versus frequency as follows:
where n is the order of the filter, ω is the frequency, ω iscIs the cut-off frequency (i.e., the frequency at which the amplitude drops to-3 db).
It should be noted that the present embodiment is not limited to the filtering process performed on the temperature measurement value by using the butterworth filter, and other filtering methods may be used.
The real-time dynamic compensation method for the armored thermocouple temperature sensor provided by the embodiment is verified below.
Under the condition of ideal noise removal, in order to verify the compensation effect of the real-time dynamic compensation method of the present embodiment on the fluid to be measured under different dynamic changes, simulation analysis is performed on a step signal, a ramp signal and a sinusoidal signal respectively, taking an armored thermocouple temperature sensor with a certain time constant τ of 3 and a sampling time Δ t of 0.025 as examples.
The real-time dynamic compensation method of the present embodiment shows compensation results of the fluid to be measured with a step, a slope, a 2Hz sine and a 10Hz sine respectively as shown in fig. 4 to 7. It can be seen that, under the ideal denoising condition, the real-time dynamic compensation method of the embodiment has an ideal compensation effect on the conditions that the fluid to be measured changes in steps, slopes, 2Hz sinusoid and 10Hz sinusoid, and the dynamic response characteristic of the armored thermocouple temperature sensor after compensation is remarkably improved.
The effect of the real-time dynamic compensation method of the present embodiment on the compensation of the step response data actually collected by a certain armored thermocouple temperature sensor is shown in fig. 8. In fig. 8, a solid black line indicates the temperature of the measured fluid, a dashed dark black line indicates the measured temperature of the sheathed thermocouple temperature sensor, and a dashed light black line indicates the measured temperature compensated by the real-time compensation method. As can be seen from fig. 8, after the real-time dynamic compensation method of the present embodiment compensates, the adjustment time of the armored thermocouple temperature sensor is reduced from 38s to about 3, and the dynamic response speed is increased by about 10 times.
To sum up, the real-time dynamic compensation method for the armored thermocouple temperature sensor provided by the embodiment of the present application includes first constructing a complex domain mathematical model of the armored thermocouple temperature sensor; secondly, because the change trend of the temperature of the measured fluid is not necessarily step change, the time interval (namely the time of one sampling) between every two adjacent sampling moments is short, and the time can be discretized, so that the temperature change of each short time interval can be regarded as step change, the input signal is determined to be a step input signal, and the Laplace transformation result of the step input signal is determined; taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model again, outputting the Laplace transform result of the step response signal, and solving the time domain function of the step response signal; and finally, constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on a mathematical transformation result of the time domain function of the step response signal, thereby carrying out real-time dynamic compensation on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model. The temperature measurement value of the armored thermocouple temperature sensor at each sampling moment can be compensated in real time, and the dynamic response characteristic of the armored thermocouple temperature sensor after compensation is remarkably improved; and the design of a control system is not restricted, and the flexibility is higher.
Based on the same technical concept, the embodiment of the present application further provides a real-time dynamic compensation device for an armored thermocouple temperature sensor, an electronic device, a computer storage medium, and the like, and reference may be specifically made to the following embodiments.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a real-time dynamic compensation device for an armored thermocouple temperature sensor according to an embodiment of the present application. As shown in fig. 9, the apparatus may include:
the construction module 10 is used for constructing a complex domain mathematical model of the armored thermocouple temperature sensor;
the determining module 20 is configured to determine a time domain function of the step input signal based on a temperature change condition of the measured fluid between every two adjacent sampling moments, and determine a lagrange transformation result of the step input signal;
a calculating module 30, configured to use the laplace transform result of the step input signal as an input of the complex domain mathematical model, output the laplace transform result of the step response signal, and calculate a time domain function of the step response signal;
and the compensation module 40 is configured to construct a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on a mathematical transformation result of the time-domain function of the step response signal, so as to perform real-time dynamic compensation on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model.
An embodiment of the present application discloses an electronic device, as shown in fig. 10, including: a processor 1001, a memory 1002, and a bus 1003, wherein the memory 1002 stores machine-readable instructions executable by the processor 1001, and wherein the processor 1001 and the memory 1002 communicate via the bus 1003 when the electronic device is operated. The machine readable instructions, when executed by the processor 1001, perform the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, which is not described herein again.
The computer program product of the real-time dynamic compensation method for the armored thermocouple temperature sensor provided in the embodiment of the present application includes a computer readable storage medium storing a non-volatile program code executable by a processor, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and is not described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A real-time dynamic compensation method for an armored thermocouple temperature sensor is characterized by comprising the following steps:
constructing a complex domain mathematical model of the armored thermocouple temperature sensor;
determining a time domain function of a step input signal based on the temperature change condition of the measured fluid between every two adjacent sampling moments, and determining a Laplace transformation result of the step input signal;
taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, outputting the Laplace transform result of the step response signal, and solving the time domain function of the step response signal;
and constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on a mathematical transformation result of the time domain function of the step response signal, so as to perform real-time dynamic compensation on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model.
2. The method of claim 1, wherein constructing a complex domain mathematical model of an armored thermocouple temperature sensor comprises:
a complex domain mathematical model of the armored thermocouple temperature sensor is constructed as a first-order inertia link.
3. The method of claim 1, wherein determining the time domain function of the step input signal based on the temperature change of the measured fluid between each two adjacent sampling moments, and determining the Laplace transform result of the step input signal comprises:
the temperature change condition of the measured fluid between every two adjacent sampling moments is approximate to a step change condition;
determining a time domain function of the step input signal based on the step change condition;
and performing Laplace transformation on the time domain function of the step input signal to obtain a Laplace transformation result of the step input signal.
4. The method of claim 1, wherein inputting the Laplace transform result of the step input signal into the complex domain mathematical model, outputting the Laplace transform result of the step response signal, and determining the time domain function of the step response signal comprises:
taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, and outputting the Laplace transform result of the step response signal;
and carrying out inverse Laplace transform on the Laplace transform result of the step response signal to obtain a time domain function of the step response signal.
5. The method of claim 1, wherein constructing a real-time dynamic compensation mathematical model of an armored thermocouple temperature sensor based on a mathematical transformation result of a time domain function of the step response signal comprises:
performing mathematical transformation on the step input signal in the time domain function of the step response signal to obtain a temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment and a temperature measurement value at the previous sampling moment;
performing mathematical transformation on the step response signal in the time domain function of the step response signal to obtain a measured value of the armored thermocouple temperature sensor after temperature compensation at the current sampling moment and a temperature measured value at the previous sampling moment;
and constructing a real-time dynamic compensation mathematical model for calculating the measured value of the armored thermocouple temperature sensor after temperature compensation at the current sampling moment based on the mathematical transformation result of the time domain function of the step response signal.
6. The method of claim 5, wherein the real-time dynamic compensation of the temperature measurement value at each sampling instant based on the real-time dynamic compensation mathematical model comprises:
for each sampling moment, acquiring a temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment, a temperature measurement value at the previous sampling moment and a time constant of the complex domain mathematical model;
and aiming at each sampling moment, inputting the obtained temperature measurement value of the armored thermocouple temperature sensor at the current sampling moment, the temperature measurement value at the previous sampling moment and the time constant of the complex domain mathematical model into the real-time dynamic compensation mathematical model, and outputting the measurement value of the armored thermocouple temperature sensor after temperature compensation at the current sampling moment, thereby carrying out real-time dynamic compensation on the temperature measurement value at the current sampling moment.
7. The method of claim 1, wherein prior to performing real-time dynamic compensation on the temperature measurement value at each sampling instant based on the real-time dynamic compensation mathematical model, further comprising:
the temperature measurement at each sampling instant is filtered using a butterworth filter.
8. A real-time dynamic compensation device of an armored thermocouple temperature sensor is characterized by comprising:
the construction module is used for constructing a complex domain mathematical model of the armored thermocouple temperature sensor;
the determining module is used for determining a time domain function of the step input signal based on the temperature change condition of the measured fluid between every two adjacent sampling moments and determining a Laplace transform result of the step input signal;
the calculating module is used for taking the Laplace transform result of the step input signal as the input of the complex domain mathematical model, outputting the Laplace transform result of the step response signal and calculating the time domain function of the step response signal;
and the compensation module is used for constructing a real-time dynamic compensation mathematical model of the armored thermocouple temperature sensor based on the mathematical transformation result of the time domain function of the step response signal, so that the real-time dynamic compensation is carried out on the temperature measurement value at each sampling moment based on the real-time dynamic compensation mathematical model.
9. An electronic device, comprising: a processor, a storage medium and a bus, the storage medium storing machine-readable instructions executable by the processor, the processor and the storage medium communicating via the bus when the electronic device is operating, the processor executing the machine-readable instructions to perform the steps of the method according to any one of claims 1-7.
10. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, is adapted to carry out the steps of the method according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110227563.4A CN112945411B (en) | 2021-03-01 | 2021-03-01 | Real-time dynamic compensation method and device for armored thermocouple temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110227563.4A CN112945411B (en) | 2021-03-01 | 2021-03-01 | Real-time dynamic compensation method and device for armored thermocouple temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112945411A true CN112945411A (en) | 2021-06-11 |
| CN112945411B CN112945411B (en) | 2022-11-22 |
Family
ID=76247006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110227563.4A Active CN112945411B (en) | 2021-03-01 | 2021-03-01 | Real-time dynamic compensation method and device for armored thermocouple temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112945411B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588122A (en) * | 2021-07-27 | 2021-11-02 | 吉林省中赢高科技有限公司 | Method and device for measuring surface temperature of object |
| CN113865734A (en) * | 2021-08-13 | 2021-12-31 | 北京航空航天大学 | Temperature sensor model creating method and device and electronic equipment |
| CN114166362A (en) * | 2021-10-20 | 2022-03-11 | 中国航发四川燃气涡轮研究院 | Dynamic temperature measurement time-frequency compensation method based on combined wire diameter thermocouple |
| CN116413039A (en) * | 2023-03-29 | 2023-07-11 | 中国航发沈阳发动机研究所 | Sensor signal processing method for ramjet engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576810A (en) * | 2003-07-18 | 2005-02-09 | 三菱重工业株式会社 | High speed detecting equipment for combustion temperature |
| CN101424572A (en) * | 2008-12-09 | 2009-05-06 | 大连理工大学 | Compensation process for detecting temperature for temperature sensor |
| EP3109607A2 (en) * | 2015-06-24 | 2016-12-28 | LSIS Co., Ltd. | Method for temperature drift compensation of temperature measurement device using thermocouple |
| CN106482868A (en) * | 2016-10-12 | 2017-03-08 | 优美斯科技（深圳）有限公司 | Temperature difference calibration steps and its system |
| CN106500857A (en) * | 2016-10-19 | 2017-03-15 | 广东盈科电子有限公司 | A kind of temperature sensor temperature-responsive lag compensation method |
| KR20190110685A (en) * | 2018-03-21 | 2019-10-01 | (주) 텔로팜 | Method and apparatus for measuring sap flow rate with temperature compensation |
| CN112013978A (en) * | 2020-09-03 | 2020-12-01 | 安徽大学 | Automatic compensation method for dynamic temperature measurement of temperature sensor |
-
2021
- 2021-03-01 CN CN202110227563.4A patent/CN112945411B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1576810A (en) * | 2003-07-18 | 2005-02-09 | 三菱重工业株式会社 | High speed detecting equipment for combustion temperature |
| CN101424572A (en) * | 2008-12-09 | 2009-05-06 | 大连理工大学 | Compensation process for detecting temperature for temperature sensor |
| EP3109607A2 (en) * | 2015-06-24 | 2016-12-28 | LSIS Co., Ltd. | Method for temperature drift compensation of temperature measurement device using thermocouple |
| CN106482868A (en) * | 2016-10-12 | 2017-03-08 | 优美斯科技（深圳）有限公司 | Temperature difference calibration steps and its system |
| CN106500857A (en) * | 2016-10-19 | 2017-03-15 | 广东盈科电子有限公司 | A kind of temperature sensor temperature-responsive lag compensation method |
| KR20190110685A (en) * | 2018-03-21 | 2019-10-01 | (주) 텔로팜 | Method and apparatus for measuring sap flow rate with temperature compensation |
| CN112013978A (en) * | 2020-09-03 | 2020-12-01 | 安徽大学 | Automatic compensation method for dynamic temperature measurement of temperature sensor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588122A (en) * | 2021-07-27 | 2021-11-02 | 吉林省中赢高科技有限公司 | Method and device for measuring surface temperature of object |
| CN113865734A (en) * | 2021-08-13 | 2021-12-31 | 北京航空航天大学 | Temperature sensor model creating method and device and electronic equipment |
| CN114166362A (en) * | 2021-10-20 | 2022-03-11 | 中国航发四川燃气涡轮研究院 | Dynamic temperature measurement time-frequency compensation method based on combined wire diameter thermocouple |
| CN114166362B (en) * | 2021-10-20 | 2023-09-01 | 中国航发四川燃气涡轮研究院 | Dynamic temperature measurement time-frequency compensation method based on combined wire diameter thermocouple |
| CN116413039A (en) * | 2023-03-29 | 2023-07-11 | 中国航发沈阳发动机研究所 | Sensor signal processing method for ramjet engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112945411B (en) | 2022-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112945411B (en) | Real-time dynamic compensation method and device for armored thermocouple temperature sensor | |
| Ritter et al. | Guideline for an assessment of electrochemical noise measurement devices | |
| CN107449521B (en) | Temperature compensation method, terminal device and computer readable storage medium | |
| Stender et al. | Impact of an irregular friction formulation on dynamics of a minimal model for brake squeal | |
| Diao et al. | Analysis and compensation of MEMS gyroscope drift | |
| Xu et al. | Research on relaxation modulus of viscoelastic materials under unsteady temperature states based on TTSP | |
| Hemerly | MEMS IMU stochastic error modelling | |
| Nogueira et al. | An a posteriori-implicit turbulent model with automatic dissipation adjustment for Large Eddy Simulation of compressible flows | |
| US8635044B2 (en) | Transient thermal modeling of multisource power devices | |
| Yanning et al. | Performance analysis of MEMS gyro and improvement using Kalman filter | |
| CN117147022A (en) | Force sensor nonlinear compensation method and system | |
| Velázquez et al. | A generic model for sensor simulation at system level | |
| CN115831295B (en) | Material constitutive equation parameter calibration method and device and computer equipment | |
| Araujo et al. | A controlled-temperature hot-wire anemometer with voltage feedback linearization | |
| CN115455347A (en) | MEMS accelerometer hybrid error modeling compensation method | |
| Ta Duc et al. | Estimating modal parameters of structures using Arduino platform | |
| Relan et al. | Recursive discrete-time models for continuous-time systems under band-limited assumptions | |
| Wynne et al. | Reducing coherent filtering artefacts in time‐domain operational modal analysis | |
| Staiger et al. | Extending the dynamic response of structural input estimation by combining sensors with unmatched bandwidth | |
| Looney | Analyzing Frequency Response of Inertial MEMS in Stabilization Systems | |
| Baudendistel et al. | Data acquisition uncertainty | |
| Silva et al. | Advanced flutter and LCO prediction tools for flight test risk and cost reduction-an international collaborative program for T&E support | |
| Dorraki et al. | Parameter identification using moment of velocity | |
| CN114034883B (en) | Acceleration determination method, acceleration determination device, acceleration determination apparatus, storage medium, and program | |
| Esfandiari et al. | Discussion on: Function-weighted frequency response function sensitivity method for analytical model updating, by RM Lin |
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 |