CN116700397A - Temperature control test verification method for thermal protection of equipment in wind tunnel - Google Patents
Temperature control test verification method for thermal protection of equipment in wind tunnel Download PDFInfo
- Publication number
- CN116700397A CN116700397A CN202310991300.XA CN202310991300A CN116700397A CN 116700397 A CN116700397 A CN 116700397A CN 202310991300 A CN202310991300 A CN 202310991300A CN 116700397 A CN116700397 A CN 116700397A
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature control
- control
- test
- heating
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012795 verification Methods 0.000 title claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 110
- 238000011217 control strategy Methods 0.000 claims abstract description 39
- 230000007613 environmental effect Effects 0.000 claims abstract description 11
- 230000033228 biological regulation Effects 0.000 claims description 20
- 230000000694 effects Effects 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910052697 platinum Inorganic materials 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000002937 thermal insulation foam Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000010200 validation analysis Methods 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Control Of Temperature (AREA)
Abstract
The application relates to the field of thermal protection of components in a low-temperature wind tunnel, and discloses a temperature control test verification method for thermal protection of equipment in the wind tunnel, which comprises the following steps: constructing a temperature control strategy test platform; a temperature control strategy test platform is adopted, and a low-temperature test box is combined, so that test working conditions are designed under two environmental conditions of normal temperature and low temperature; and carrying out test verification analysis on the temperature control strategy from the temperature control logic, the temperature control algorithm and the heating mode respectively. The feasibility of the thermal protection temperature control strategy of the wind tunnel equipment is fully compared and verified; by designing a temperature control strategy test platform and combining a low-temperature test box, corresponding test working conditions are designed under two environmental conditions of normal temperature and low temperature, and test verification and result analysis are carried out on the temperature control strategy from the angles of temperature control logic, temperature control algorithm, heating mode and the like.
Description
Technical Field
The application relates to the field of thermal protection of components in a low-temperature wind tunnel, in particular to a temperature control test verification method for thermal protection of equipment in the wind tunnel.
Background
When the wind tunnel runs, the temperature of the air flow in the wind tunnel can reach 77K at the lowest, and is far lower than the normal working temperature of various mechanical, electrical and electronic equipment in the wind tunnel, so that the internal equipment is required to be thermally protected to ensure that the internal equipment is in the normal working temperature range.
The current low-temperature wind tunnel is realized by expanding the working temperature range of the heat insulation material and the equipment per se in order to ensure the normal working temperature range of the equipment in the wind tunnel, but the protection method has high cost and high requirement on the material; in order to solve the problem, the applicant adopts a systematic thermal protection technology based on equipment in a low-temperature and high-speed fluid environment in a wind tunnel, adopts a multi-layer heat insulation assembly and PIR heat insulation foam materials to perform passive thermal protection on the equipment, and simultaneously adopts a heating element to perform active thermal protection on the equipment; the method of active thermal protection needs to be verified through experiments.
Disclosure of Invention
Therefore, the application provides a verification method for the temperature control test of the thermal protection of the equipment in the wind tunnel, which fully compares and verifies the feasibility of the thermal protection temperature control strategy of the wind tunnel equipment; according to the application, by designing a temperature control strategy test platform and combining a low-temperature test box, corresponding test working conditions are designed under two environmental conditions of normal temperature and low temperature, and test verification and result analysis are respectively carried out on the temperature control strategy from the angles of temperature control logic, temperature control algorithm, heating mode and the like.
Specifically, a temperature control test verification method for equipment heat protection in a wind tunnel comprises the following steps:
constructing a temperature control strategy test platform;
a temperature control strategy test platform is adopted, and a low-temperature test box is combined, so that test working conditions are designed under two environmental conditions of normal temperature and low temperature;
carrying out test verification analysis on the temperature control strategy from the temperature control logic, the temperature control algorithm and the heating mode respectively;
wherein the temperature control strategy test platform comprises
The control module is used as a control center;
the heating module is used for performing heat protection on the test piece under different working conditions;
the power supply module is connected with the control module and the heating module, is controlled by the control module and supplies power to the heating module; and
the temperature measuring module is connected with the control module and acts on the test piece and is used for acquiring the temperature of the test piece and transmitting the temperature to the control module.
Optionally, the method for performing test verification analysis on the temperature control strategy from the temperature control logic is as follows:
the temperature control logic at least comprises unified temperature control logic and independent temperature control logic, the unified temperature control logic and the independent temperature control logic are subjected to test analysis under various logic working conditions, the difference of the temperature control algorithm is analyzed by utilizing a temperature control effect curve, the unified temperature control logic is used for carrying out unified control on the temperature of all heating sheet protection devices, the independent temperature control logic is used for adopting independent control strategies or temperature control points aiming at different environments of one heating sheet protection device in a heating module;
the logic working condition at least comprises a set control object, temperature control logic and control temperature, wherein the control object is a square plate or a cylinder, and the control temperature at least comprises the ambient temperature of a low-temperature wind tunnel.
Optionally, the method for performing test verification analysis on the temperature control strategy by using the temperature control algorithm is as follows:
the temperature control algorithm at least comprises a switch control and a PID control, the switch control and the PID control are subjected to test analysis under various algorithm working conditions, and the difference of the temperature control algorithm is analyzed by utilizing a temperature curve; the switch is controlled to be constant power intermittent control, and the power supply power of the heating element is regulated by controlling the effective time duty ratio of constant power output, so that the temperature control speed is higher; the PID control is power regulation control, is continuous power output, and mainly realizes the regulation of the power supply power of the heating element by regulating the output current or voltage, and has higher control precision;
the algorithm working conditions at least comprise a control object, a temperature control algorithm, an environmental condition and a control temperature, wherein the control object is a square plate or a cylinder.
Optionally, the method of performing the test verification analysis on the temperature control strategy from the heating mode is:
the heating mode comprises a power regulation control heating mode and a constant power intermittent control heating mode, wherein the power regulation control heating mode is continuous power output, and the regulation of the power supply power of the heating element is realized mainly through the regulation of the output current or voltage, so that the control precision is higher; the constant power intermittent control heating mode is that the constant power intermittent control realizes the adjustment of the power supply of the heating element by controlling the effective time duty ratio of constant power output, and the temperature control speed is faster; the two heating modes are adopted to control the temperature of a No. 1 heating loop and a No. 2 heating loop (the No. 1 heating loop and the No. 2 heating loop are only different in number) of the simulation piece respectively, a temperature control step is arranged, and the difference is analyzed through a temperature control effect curve.
The application has the following advantages:
the application designs a temperature control strategy test platform, and utilizes the temperature control strategy test platform to carry out test verification analysis on the temperature control strategy from the angles of a heating element, a temperature control algorithm, a temperature control logic, a heating mode and the like, thereby proving the correctness and feasibility of the overall design of the temperature control strategy and providing effective theory and data support for the engineering realization of the thermal protection of equipment in a wind tunnel.
Drawings
FIG. 1 is a schematic flow chart of a verification method of a temperature control test for thermal protection of equipment in a wind tunnel;
FIG. 2 is a block diagram of a systematic structure of a temperature control strategy test platform according to the present application;
FIG. 3 shows different temperature control logic temperature difference curves of a lower plate in a single temperature control logic mode;
FIG. 4 illustrates different temperature control logic temperature difference curves of a lower plate in a unified temperature control logic mode;
FIG. 5 shows different temperature control logic temperature difference curves of the cylinder in a single temperature control logic mode;
FIG. 6 shows different temperature control logic temperature difference curves of the cylinder in a unified temperature control logic mode;
FIG. 7 is a graph showing the temperature control effect of a heat leak simulation test (in the drawing, a cylinder 1 is singly represented as a graph for controlling the temperature of a 1# cylinder in a singly temperature control logic mode, in the drawing, a cylinder 2 is uniformly represented as a graph for controlling the temperature of a 2# cylinder in a uniformly temperature control logic mode, wherein the 1# cylinder and the 2# cylinder are test pieces with the same shape, material and size);
FIG. 8 shows temperature curves of different temperature control algorithms under normal temperature environmental conditions in working condition 7 (in the figure, a cylinder PID is shown as a temperature curve of a cylinder test piece in the PID control algorithm, and a square plate switch is shown as a temperature curve of a square plate test piece in the switch control algorithm);
FIG. 9 shows temperature curves of different temperature control algorithms under normal temperature environmental conditions in working condition 8 (in the figure, a cylinder switch is shown as a temperature curve of a cylinder test piece in a switch control algorithm, and a square plate PID is shown as a temperature curve of a square plate test piece in a PID control algorithm);
FIG. 10 shows temperature curves of different temperature control algorithms under low-temperature environment conditions in working condition 9 (in the figure, cylinder PID is shown as a temperature curve of a cylinder test piece in the PID control algorithm, and square plate switch is shown as a temperature curve of a square plate test piece in the switch control algorithm);
FIG. 11 is a graph showing temperature curves of different temperature control algorithms under low temperature environment conditions in the working condition 10 (in the graph, a cylinder switch is shown as a temperature curve of a cylinder test piece in the switch control algorithm, and a square plate PID is shown as a temperature curve of a square plate test piece in the PID control algorithm);
FIG. 12 is a graph showing temperature change curves of different controls Wen Suanfa for fine tuning temperature control (in the graph, a cylinder switch is shown as a temperature change curve of a cylinder test piece in a switch control algorithm, and a square plate PID is shown as a temperature change curve of a square plate test piece in a PID control algorithm);
FIG. 13 illustrates a test temperature control effect curve for a heating mode verification test (where constant power interruption is shown as a curve in a constant power interruption control heating mode, and varying power adjustment is shown as a curve in a power adjustment control heating mode);
in the figure: 100. a control module; 200. a conversion module; 300. a connection module; 400. a power module; 500. a temperature measurement module; 600. a heating module; 601. a square plate-shaped heating plate protecting device; 602. a cylindrical heating plate protecting device.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As described in the background art, in order to ensure the normal working temperature range of the equipment in the wind tunnel, the current low-temperature wind tunnel is mostly realized by expanding the working temperature range of the heat insulation material and the equipment, but the protection method has high cost and high requirement on the material; in order to solve the problem, the applicant adopts a systematic thermal protection technology based on equipment in a low-temperature and high-speed fluid environment in a wind tunnel, adopts a multi-layer heat insulation assembly and PIR heat insulation foam materials to perform passive thermal protection on the equipment, and simultaneously adopts a heating element to perform active thermal protection on the equipment; the method of active thermal protection needs to be verified through experiments.
Based on the above reasons, the application provides a temperature control test verification method for thermal protection of equipment in a wind tunnel, as shown in fig. 1, comprising the following steps:
step S100, constructing a temperature control strategy test platform;
as shown in fig. 2, the temperature control strategy test platform includes a control module 100, a conversion module 200, a connection module 300, a power module 400, a temperature measurement module 500, and a heating module 600, wherein the control module 100 is used as a control center and is connected with the connection module 300 through the conversion module 200; the heating module 600 is used for performing thermal protection on a test piece under different working conditions, and is connected with the power module 400, the power module 400 is connected with the connecting module 300 through a relay module, and the temperature measuring module 500 is connected with the control module to act on the test piece, and is used for obtaining the temperature of the test piece and transmitting the temperature to the control module. The heating module 600 includes a square plate-shaped heating sheet guard 601 in which heating sheets are provided and a cylindrical heating sheet guard 602 in which heating rods are provided; wherein the heating plate is used for heating the square plate, and the heating rod is used for heating the cylinder.
The control module 100 is an S7-300 PLC upper computer control unit; the temperature control objects of typical specifications such as surface shapes, body shapes and the like are respectively subjected to physical simulation by adopting a copper square plate and a cylinder, only a thin film heating plate is adopted as a heating element due to the shape limitation of the square plate, the cylinder adopts two heating elements of the thin film heating plate and a heating rod, a temperature measuring element adopts an armored platinum resistor, and a copper plate and cylinder heating and temperature measuring element implementation method is shown in a table 1, wherein each 1 heating plate corresponds to 1 platinum resistor respectively, and each 3 heating rods corresponds to 1 platinum resistor.
TABLE 1 temperature controlled object configuration implementation table
Step 200, a temperature control strategy test platform is adopted, and a low-temperature test box is combined, so that test working conditions are designed under two environmental conditions of normal temperature and low temperature;
and step S300, performing test verification analysis on the temperature control strategy from the temperature control logic, the temperature control algorithm and the heating mode respectively.
In some embodiments, the method of conducting a trial verification analysis from the temperature control logic to the temperature control strategy is:
the temperature control logic at least comprises unified temperature control logic and independent temperature control logic, the unified temperature control logic and the independent temperature control logic are subjected to test analysis under various logic working conditions, and the difference of the temperature control algorithm is analyzed by utilizing a temperature control effect curve, wherein the unified temperature control logic is used for carrying out unified planning control on the temperature in all heating sheet protection devices in the heating module, and the independent temperature control logic is used for adopting independent control strategies or temperature control points aiming at different environments of a certain heating sheet protection device in the heating module; the logic working condition at least comprises a set control object, temperature control logic and control temperature, wherein the control object is a square plate or a cylinder, and the control temperature at least comprises the ambient temperature of a low-temperature wind tunnel.
The comparison analysis of the temperature control logic mainly takes the temperature control uniformity of the equipment as a research object, and performs test analysis on two kinds of logic, namely unified temperature control logic and independent temperature control logic of the heating and temperature measuring elements of the equipment, wherein the designed test working condition design is shown in a table 2, and the unified temperature control logic adopts platinum resistance of the same temperature measuring point on each temperature control object as temperature feedback of closed loop control.
Table 2: temperature control logic test verification working condition design
And under the working conditions 1 to 4, the counter plate and the cylinder (heating rod) are respectively subjected to tests of different temperature control logic conditions, and 30 ℃ steps are set in the process that the final temperature control value is 40 ℃ for realizing the repeatability verification of the temperature control effect. The temperature control effect curves are shown in fig. 3 to 6, respectively.
As can be seen from fig. 3 and fig. 4, when the unified temperature control logic and the independent temperature control logic are adopted to control the temperature of the square board, when the temperature control logic is the independent temperature control logic, the temperature consistency of the two temperature measuring point areas is poor, the temperature control interference phenomenon exists, and the maximum temperature difference between the two points can reach 1.3 ℃ in the temperature stabilizing section, so that the temperature uniformity of the temperature control object can be affected to a certain extent; when the unified temperature control logic is adopted, the temperature difference between the two temperature measuring points is smaller and basically within 0.5 ℃, no obvious temperature control interference phenomenon exists, and the temperature uniformity is better.
As can be seen from fig. 5 and 6, when the temperature of the cylinder is controlled by adopting the independent temperature control logic, the maximum temperature difference between two points is 0.28 ℃ in the temperature stabilizing section; when the independent temperature control logic is adopted, the maximum temperature difference between two points is 0.53 ℃, so that the temperature control object with larger volume and larger heat capacity can be known, and the uniformity and accuracy of equipment temperature control can be ensured by adopting the independent temperature control logic with relatively complex heat conduction relation due to larger heat resistance.
In addition, for a temperature control object with larger volume, the temperature control uniformity of the equipment is different due to the difference of heat leakage conditions of areas where different parts of the same object are located, and the working performance of the equipment is affected. To solve the above problems, two cylindrical simulators were placed at the refrigerating tuyere of the low temperature box and at the center in the box to simulate the difference in heat leakage conditions at different parts of the same object, as shown in working condition 5 and fig. 6. Firstly, the temperature of two cylinders is controlled to minus 45 ℃ by adopting an independent temperature control logic, then the temperature of the two cylinders is controlled to minus 36 ℃ by adopting a unified temperature control logic and taking the 1 st cylinder temperature measuring point as a closed loop feedback value, and the temperature control curve is shown in figure 7.
As can be seen from fig. 7, in the temperature control stage using the single temperature control logic, the maximum temperature difference between the two cylinders is 1.25 ℃, and in the unified temperature control logic stage, the maximum temperature difference between the two cylinders is 5.91 ℃ which is significantly larger than that in the single temperature control logic temperature control stage, so that the temperature control uniformity performance advantage of the single temperature control logic is more obvious for the temperature control object with larger volume.
In some embodiments, the method in which the test validation analysis is performed from the temperature control algorithm on the temperature control strategy is:
the temperature control algorithm at least comprises a switch control and a PID control, the switch control and the PID control are subjected to test analysis under various algorithm working conditions, and the difference of the temperature control algorithm is analyzed by utilizing a temperature curve; the switch is controlled to be constant power intermittent control, and the power supply power of the heating element is regulated by controlling the effective time duty ratio of constant power output, so that the temperature control speed is higher; the PID control is power regulation control, is continuous power output, and mainly realizes the regulation of the power supply power of the heating element by regulating the output current or voltage, and has higher control precision; the algorithm working conditions at least comprise a control object, a temperature control algorithm, an environmental condition and a control temperature, wherein the control object is a square plate or a cylinder.
The comparative analysis of the temperature control algorithm is mainly developed for two temperature control algorithms, namely a switch control algorithm and a PID control algorithm, and the test working condition design is shown in table 3.
Table 3: temperature control algorithm test verification working condition design
The working conditions 7 and 8 are that the temperature of the counter plate and the cylinder is controlled by adopting a switch control algorithm and a PID control algorithm under the normal temperature and normal pressure, and the temperature control data of the working conditions are shown in fig. 8 and 9.
As can be seen from fig. 8 and 9, in the temperature rising stage from the normal temperature to 40 ℃ under the working conditions 7 and 8, the cylinder temperature rising time is longer, the control overshoot is larger, and the reason is that the thermal capacity of the body type structure is larger, and the temperature control hysteresis is stronger. For any temperature control object, the maximum temperature overshoot of the PID control algorithm is smaller than 2 ℃, and is superior to the switch control algorithm, and the overshoot of the PID control algorithm can be reduced to be smaller by setting the PID parameters.
In the temperature stabilizing section of the working condition 7 and the working condition 8, the maximum temperature control error of the PID algorithm of any temperature control object is smaller than 0.6 ℃, is superior to a switch control algorithm and is in a convergence trend, the temperature of the temperature control object controlled by the switch shows oscillation with different frequencies and amplitudes, and especially for a cylinder with larger heat capacity, the maximum temperature difference controlled by the switch is larger than 1 ℃.
The working condition 9 and the working condition 10 are that under the low-temperature normal-pressure condition, the temperature of the counter plate and the cylinder temperature control object are respectively controlled by adopting two temperature control algorithms, the temperature control target temperature is respectively set at-45 ℃ and-35 ℃, and the temperature control data curves are shown in fig. 10 and 11.
As can be seen from fig. 10 and 11, in the temperature rising section and the stabilizing section of any temperature control object, the temperature overshoot and the maximum temperature difference of the PID algorithm are smaller than those of the switch control algorithm, and the temperature control advantage is more obvious especially for a cylinder with larger heat capacity.
To verify the effect of two temperature control algorithms on fine tuning temperature control, a working condition 11 is designed on the basis of a working condition 10, wherein the temperature control target value is changed to be 1 ℃, and a temperature control data curve is shown in fig. 12.
As can be seen from fig. 12, in the case of fine tuning temperature control, the temperature control performance of the PID control algorithm is significantly better than that of the switch control algorithm, so that the performance requirement of small-amplitude fine tuning of the control temperature can be better met.
In some embodiments, the method in which the test validation analysis is performed from the heating mode versus the temperature control strategy is:
the heating mode comprises a power regulation control heating mode and a constant power intermittent control heating mode, wherein the power regulation control heating mode is continuous power output, and the regulation of the power supply power of the heating element is realized mainly through the regulation of the output current or voltage, so that the control precision is higher; the constant power intermittent control heating mode is that the constant power intermittent control realizes the adjustment of the power supply of the heating element by controlling the effective time duty ratio of constant power output, and the temperature control speed is faster; the two heating modes are adopted to control the temperature of the heating loop of the simulation part, a temperature control step is arranged, and the difference is analyzed through a temperature control effect curve.
For comparison analysis, the difference of the temperature control performance between the power adjustment control heating mode and the constant power intermittent control heating mode is illustrated, and the temperature control is performed by using the 1# heating circuit and the 2# heating circuit (the 1# heating circuit and the 2# heating circuit are only different in number) of the square plate simulator respectively, wherein the temperature control steps are set to 45 ℃ and 50 ℃, and the temperature control effect curves are shown in fig. 13.
As can be seen from fig. 13, the two heating modes meet the temperature control requirement, and the difference is small, compared with the constant power intermittent control heating mode, the overshoot and the time coefficient are small in the heating stage, and the temperature control temperature difference of the power adjustment control heating mode is small in the temperature stabilization stage, so that the accuracy is relatively good. Considering that the quantity of equipment in a certain wind tunnel is huge, the constant power intermittent control heating mode is adopted from the aspects of temperature control performance and engineering complexity, namely the mode of combining a constant voltage bus with a solid state relay to supply power to a heating element is adopted, and the comprehensive efficiency is better.
The application can be known by comparing and analyzing the temperature control algorithm, the temperature control logic and the temperature control strategy of different heating elements:
1) For different types of equipment models, the PID algorithm can better realize the temperature control performance, the temperature control temperature difference is better than 1 ℃, but the temperature control logic is considered;
2) For equipment with larger volume and capacity, the temperature uniformity of the single temperature control logic is better, and for equipment with smaller volume, the mutual interference of equipment temperature control is eliminated through the unified temperature control logic, so that the temperature control performance is improved;
from the test effect and engineering practice, the feasibility and the practicability of the constant power intermittent control heating mode are higher than those of the power adjustment control heating mode.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The verification method for the temperature control test of the thermal protection of the equipment in the wind tunnel is characterized by comprising the following steps of:
constructing a temperature control strategy test platform;
a temperature control strategy test platform is adopted, and a low-temperature test box is combined, so that test working conditions are designed under two environmental conditions of normal temperature and low temperature;
carrying out test verification analysis on the temperature control strategy from the temperature control logic, the temperature control algorithm and the heating mode respectively;
wherein the temperature control strategy test platform comprises
The control module is used as a control center;
the heating module is used for performing heat protection on the test piece under different working conditions and comprises a plurality of heating piece protection devices;
the power supply module is connected with the control module and the heating module, is controlled by the control module and supplies power to the heating module; and
and the temperature measuring module is connected with the control module and acts on the test piece and is used for acquiring the temperature of the test piece and transmitting the temperature to the control module.
2. The method for verifying the temperature control test of the thermal protection of equipment in a wind tunnel according to claim 1, wherein the method for performing test verification analysis on the temperature control strategy from the temperature control logic is as follows:
the temperature control logic at least comprises unified temperature control logic and independent temperature control logic, the unified temperature control logic and the independent temperature control logic are subjected to test analysis under various logic working conditions, the difference of the temperature control algorithm is analyzed by utilizing a temperature control effect curve, the unified temperature control logic is used for carrying out unified control on the temperature of all heating sheet protection devices, the independent temperature control logic is used for adopting independent control strategies or temperature control points aiming at different environments of one heating sheet protection device in the heating module.
3. The method for verifying the temperature control test of the thermal protection of the equipment in the wind tunnel according to claim 2, wherein the logic working condition at least comprises setting a control object, temperature control logic and control temperature, the control object is a square plate or a cylinder, and the control temperature at least comprises the ambient temperature of the low-temperature wind tunnel.
4. The method for verifying the temperature control test of the thermal protection of equipment in a wind tunnel according to claim 1, wherein the method for performing test verification analysis on the temperature control strategy from the temperature control algorithm is as follows:
the temperature control algorithm at least comprises a switch control and a PID control, the switch control and the PID control are subjected to test analysis under various algorithm working conditions, and the difference of the temperature control algorithm is analyzed by utilizing a temperature curve; wherein the switch control is constant power intermittent control, and the adjustment of the power supply power of the heating element is realized by controlling the effective time duty ratio of constant power output; the PID control is a power regulation control heating mode, is continuous power output, and mainly realizes the regulation of the power supply power of the heating element through the regulation of the output current or voltage.
5. The method for verifying the temperature control test of the thermal protection of the equipment in the wind tunnel according to claim 4, wherein the algorithm working conditions at least comprise a control object, a temperature control algorithm, an environmental condition and a control temperature, and the control object is a square plate or a cylinder.
6. The method for verifying temperature control test of thermal protection of equipment in a wind tunnel according to claim 1, wherein the method for performing test verification analysis on the temperature control strategy from the heating mode is as follows:
the heating modes include a power regulation control heating mode and a constant power intermittent control heating mode,
the heating loop of the simulation part is controlled in temperature by adopting a power regulation control heating mode and a constant power intermittent control heating mode respectively, a temperature control step is arranged, and then the difference is analyzed through a temperature control effect curve;
the power regulation and control heating mode is continuous power output, and the regulation of the power supply power of the heating element is realized mainly through the regulation of the output current or voltage;
the constant power intermittent control heating mode is constant power intermittent control, and the power supply of the heating element is adjusted by controlling the effective time duty ratio of constant power output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310991300.XA CN116700397A (en) | 2023-08-08 | 2023-08-08 | Temperature control test verification method for thermal protection of equipment in wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310991300.XA CN116700397A (en) | 2023-08-08 | 2023-08-08 | Temperature control test verification method for thermal protection of equipment in wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116700397A true CN116700397A (en) | 2023-09-05 |
Family
ID=87837951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310991300.XA Pending CN116700397A (en) | 2023-08-08 | 2023-08-08 | Temperature control test verification method for thermal protection of equipment in wind tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116700397A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340070A (en) * | 2020-09-29 | 2021-02-09 | 北京空间飞行器总体设计部 | Design method of ground test system of high-stability temperature measurement and control system |
-
2023
- 2023-08-08 CN CN202310991300.XA patent/CN116700397A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112340070A (en) * | 2020-09-29 | 2021-02-09 | 北京空间飞行器总体设计部 | Design method of ground test system of high-stability temperature measurement and control system |
Non-Patent Citations (1)
| Title |
|---|
| 葛哲阳: "某型风洞内设备热防护控温策略研究及试验验证", 《电子测量与仪器学报》, vol. 35, no. 05, pages 182 - 188 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104834781B (en) | A kind of Analysis of Transient Thermal Field emulation mode during commutation failure multiple based on smoothing reactor | |
| Tahersima et al. | Thermal analysis of an HVAC system with TRV controlled hydronic radiator | |
| CN114139420A (en) | Quartz lamp radiation heating virtual test method | |
| CN104679059A (en) | Temperature control system of integrated circuit | |
| CN114239442A (en) | Method, system, medium and device suitable for PCB hot spot investigation and heat dissipation simulation | |
| CN116700397A (en) | Temperature control test verification method for thermal protection of equipment in wind tunnel | |
| Alkharabsheh et al. | Utilizing practical fan curves in cfd modeling of a data center | |
| Maganga et al. | Hardware implementation of maximum power point tracking for thermoelectric generators | |
| Chen et al. | A compensation algorithm to reduce humidity ratio error due to asynchronous humidity and temperature sensor time constants | |
| He et al. | Construction of Higher-Dimensional Hyperchaotic Systems with a Maximum Number of Positive Lyapunov Exponents under Average Eigenvalue Criteria | |
| Prijić et al. | A steady-state spice modeling of the thermoelectric wireless sensor network node | |
| ZeYuan et al. | Research on Temperature Control Technology of Thermal Protection Device for The Low Temperature Wind Tunne Equipment | |
| Liu et al. | Control logic design based on modeling of aircraft cockpit temperature control system | |
| Chen | Analysis and research on Thermal-Force coupling performance of a vehicle controller PCB board | |
| Bosselmann et al. | Thermal modeling and decentralized control of mold temperature for a vulcanization test bench | |
| Chen | Realistic optimal design of thermoelectric battery bank under partial lukewarming | |
| Nanno et al. | A new model with feedback structure for thermal process and its application to decoupling control | |
| Novikov et al. | THERMAL MODELING OF THE COMMUNICATION BOARD | |
| CN113947008B (en) | Semiconductor device temperature distribution prediction method based on BP neural network model | |
| CN114413565B (en) | Wide-temperature-zone high-stability temperature control cold plate in vacuum environment | |
| Peddada et al. | Optimal sensor placement methods for active power electronic systems | |
| Dudek et al. | Analysis of Solder Fatigue on Mounted Test Assemblies under Thermal Cycling Loads | |
| CN113631014B (en) | High-power servo controller heat assessment device and system | |
| CN209417614U (en) | A kind of voltage compensating circuit | |
| Kuznetsov et al. | Influence of polymer aging on reliability indices of a typical printed-circuit assembly of radioelectronic equipment |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230905 |