CN115657756A - High-precision satellite-borne temperature control system and method - Google Patents
High-precision satellite-borne temperature control system and method Download PDFInfo
- Publication number
- CN115657756A CN115657756A CN202211310470.9A CN202211310470A CN115657756A CN 115657756 A CN115657756 A CN 115657756A CN 202211310470 A CN202211310470 A CN 202211310470A CN 115657756 A CN115657756 A CN 115657756A
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature control
- module
- value
- acquisition
- 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
Images
Landscapes
- Control Of Temperature (AREA)
Abstract
The invention discloses a high-precision satellite-borne temperature control system and a high-precision satellite-borne temperature control method, which comprise a first temperature measurement circuit and a second temperature measurement circuit; the output end of the first temperature measuring circuit is respectively connected with the input end of the first amplifying circuit and the input end of the acquisition module, and the output end of the first amplifying circuit is connected with the input end of the acquisition module; the output end of the second temperature measuring circuit is respectively connected with the input end of the second amplifying circuit and the input end of the acquisition module, and the output end of the second amplifying circuit is connected with the input end of the acquisition module; the output end of the acquisition module is connected with the input end of the control and processing module, and the output end of the control and processing module is respectively connected with the input end of the first temperature control module and the input end of the second temperature control module; the output end of the first temperature control module is connected with the input end of the first heating wire module; the output end of the second temperature control module is connected with the output end of the first heating wire module. The temperature control stability of the satellite-borne temperature control system is effectively improved, and the high-precision satellite-borne temperature control system has wider adaptability and practicability.
Description
Technical Field
The invention belongs to the technical field of detection, and particularly belongs to a high-precision satellite-borne temperature control system and method.
Background
With the continuous development and deepening of China in the deep space detection field, the requirements for capturing and processing space microscopic information are higher and higher, and high-performance and high-precision components are widely applied. Because the temperature change of the space environment is far more complex than the temperature change of the earth surface, and the fluctuation is severe, the severe change of the environmental temperature of a precision device directly influences the working performance and the output precision of internal components, for example, a polarization analyzer of a satellite-borne optical load, when the fluctuation of the environmental temperature exceeds 0.1 ℃, the arrangement distribution of internal liquid crystals is changed, thereby influencing the polarization and tuning filtering effects of an optical path, greatly reducing the observation precision of the optical load, and possibly causing the failure of a load task in severe cases.
The traditional satellite-borne temperature control design method mainly aims at the environment in a satellite platform cabin, and is large in temperature control area, low in temperature measurement resolution and poor in temperature control stability. The electronic system in the platform cabin generally has low working speed, mainly plays the roles of whole satellite resource scheduling management, data storage and the like, has low sensitivity to environmental temperature fluctuation, and does not have obvious change in working performance in a wider temperature range. The temperature control stability realized by the traditional satellite-borne temperature control design method can reach 0.5 ℃/30min at present, the temperature control requirements of electronic equipment of a satellite platform cabin are completely met, but the constant temperature control requirements of extremely temperature sensitive devices are far from insufficient.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the high-precision satellite-borne temperature control system and the method, which effectively improve the temperature control stability (up to 0.05 ℃) of the satellite-borne temperature control system, so that the high-precision satellite-borne temperature control system has wider adaptability and practicability.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-precision satellite-borne temperature control system comprises a first temperature measurement circuit and a second temperature measurement circuit;
the output end of the first temperature measuring circuit is respectively connected with the input end of the first amplifying circuit and the input end of the acquisition module, and the output end of the first amplifying circuit is connected with the input end of the acquisition module;
the output end of the second temperature measuring circuit is respectively connected with the input end of the second amplifying circuit and the input end of the acquisition module, and the output end of the second amplifying circuit is connected with the input end of the acquisition module;
the output end of the acquisition module is connected with the input end of the control and processing module, and the output end of the control and processing module is respectively connected with the input end of the first temperature control module and the input end of the second temperature control module; the output end of the first temperature control module is connected with the input end of the first heating wire module; the output end of the second temperature control module is connected with the output end of the first heating wire module.
Preferably, the first temperature measuring circuit and the second temperature measuring circuit are connected by a Wheatstone bridge.
Preferably, the first temperature measuring circuit and the second temperature measuring circuit have the same structure.
Preferably, the first temperature measuring circuit comprises a first thermistor module, a bridge conversion module and a signal conditioning module;
the output end of the first thermistor module is connected with the input end of the bridge conversion module, the output end of the bridge conversion module is connected with the input end of the signal conditioning module, and the output end of the signal conditioning module is respectively connected with the input end of the first amplifying circuit and the input end of the acquisition module.
A high-precision satellite-borne temperature control method comprises the following processes,
the first temperature measurement circuit performs first-stage preliminary acquisition, acquires a current rough temperature value in a full temperature range, and starts a first-stage temperature control mechanism to regulate the temperature of the device to be measured to a target temperature range; then the second stage acquires the current temperature accurate value through the first amplifying circuit, the second stage temperature control mechanism is started, the heating duty ratio is dynamically adjusted through PID in real time, the temperature of the tested device is enabled to approach the target temperature value in a smooth micro-amplitude oscillation mode, and dynamic balance is achieved.
When the first temperature measuring circuit is abnormal, the control and processing module starts the second temperature measuring circuit to control the temperature.
Preferably, the method specifically comprises the following steps,
step 1, a first temperature measuring circuit performs temperature rough collection and judges a temperature collection value: whether the temperature is greater than the lower limit value of the temperature control interval or not; if the temperature is greater than the lower limit value of the temperature control interval, comparing the temperature with the upper limit value of the temperature control interval, and executing the step 4; if the temperature is less than the lower limit value of the temperature control interval, recording the acquisition times, and executing the step 2;
step 2, judging the collection times in the step 1: whether the frequency is less than the preset frequency or not, if so, starting full-power heating and returning to the step 1; if the number of times is more than the preset number of times, reading the first and last acquisition values for judgment, and executing the step 3;
step 3, judging whether the first and last acquisition values are within a deviation range, if so, starting full-power heating and returning to the step 1; if not, marking that the first temperature measuring circuit is abnormal, starting a second temperature measuring circuit by the control and processing module, and executing the step 9;
step 4, comparing the rough mining temperature value with the upper limit value of the temperature control area when the rough mining temperature value is larger than the temperature control limit value: if the temperature is smaller than the upper limit value of the temperature control interval, entering a fine mining process, and executing a step 7; if not, recording the acquisition times, and executing the step 5;
step 5, judging the collection times: if the number of times is less than the preset number of times, stopping heating and returning to the step 1; if not, reading the first and last acquisition values for judgment;
step 6, judging the first and last acquisition values: if the deviation is within the deviation range, stopping heating and returning to the step 1; if not, marking that the first temperature measuring circuit is abnormal, starting a second temperature measuring circuit by the control and processing module, and executing the step 9;
and 7, after entering temperature fine mining, judging the acquisition value and the accurate temperature control interval: if the deviation range is lower than the target value, PID full-power heating is carried out, and the step 1 is returned to; if not, further judging the upper limit of the accurate interval;
step 8, accurate temperature control interval upper limit judgment: a deviation range above a target value. If yes, stopping heating and returning to the step 1; if not, substituting the acquired value into a PID temperature control algorithm to calculate the heating duty ratio, controlling the heating power by adopting a PWM mode and returning to the step 7;
step 9, the second temperature measuring circuit performs temperature rough mining, and judges a temperature acquisition value: whether the temperature is greater than the lower limit value of the temperature control interval or not; if the temperature is greater than the lower limit value of the temperature control interval, comparing the temperature with the upper limit value of the temperature control interval, and executing the step 12; if the temperature is less than the lower limit value of the temperature control interval, recording the acquisition times, and executing the step 10;
step 10, judging the collection times in the step 1: whether the frequency is less than the preset frequency or not, if so, starting full-power heating and returning to the step 9; if the number of times is larger than the preset number of times, reading the first and last acquisition values for judgment, and executing the step 11;
step 11, judging whether the first and last acquisition values are within the deviation range, if so, starting full-power heating and returning to the step 9; if not, marking that the second temperature measuring circuit is abnormal, and ending temperature control;
step 12, comparing the rough mining temperature value with the upper limit value of the temperature control area when the rough mining temperature value is greater than the temperature control limit: if the temperature is smaller than the upper limit value of the temperature control interval, entering a fine mining process and executing the step 15; if not, recording the acquisition times, and executing the step 13;
step 13, judging the collection times: if the number of times is less than the preset number of times, stopping heating and returning to the step 9; if not, reading the first and last acquisition values for judgment;
step 14, judging the first and last acquisition values: if the deviation is within the deviation range, stopping heating and returning to the step 9; if not, marking that the second temperature measuring circuit is abnormal, and ending temperature control;
step 15, after entering temperature fine mining, judging the acquisition value and the accurate temperature control interval: if the deviation range is lower than the target value, if so, PID full-power heating is carried out, and the step 9 is returned to; if not, further judging the upper limit of the accurate interval;
step 16, judging the upper limit of the accurate temperature control interval: whether it is above the target value. If yes, stopping heating and returning to the step 9; if not, substituting the acquired value into a PID temperature control algorithm to calculate the heating duty ratio, controlling the heating power by adopting a PWM mode, and returning to the step 15.
Further, in step 1, before rough mining, the control and processing module receives an external instruction, updates the target temperature value of the temperature control system, and maintains the default value of 35 ℃ if no relevant instruction is received.
Further, in step 1, the preset number of times of the collection is 10.
Further, in step 1, the deviation range between the first and last collected values is 10%.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a high-precision satellite-borne temperature control system.A main temperature control link and a backup temperature control link are formed by adopting a first temperature measurement circuit and a second temperature measurement circuit, and when any one of the main temperature control link and the backup temperature control link is abnormal, the backup temperature control link is automatically intervened without intervention of a third party. The continuous and stable work of the temperature control system is guaranteed, the reliability and the safety of the temperature control system are improved, and the high-precision satellite-borne temperature control system has wider adaptability and practicability.
The invention provides a high-precision satellite-borne temperature control method, which takes a traditional temperature control system design framework as a base line, adopts a step-by-step approximation iterative acquisition mode, introduces an intelligent temperature control design method combining dynamic interactive acquisition and real-time PID control, effectively improves the temperature control stability (up to 0.05 ℃) of a satellite-borne temperature control system, and enables the high-precision satellite-borne temperature control system to have wider adaptability and practicability. The invention can realize the accurate constant temperature control of the polarization analyzer in orbit, and return the real-time temperature value and the temperature control coefficient of the polarization analyzer to the load platform main control computer for storage in the form of remote measurement working parameters, and then return the real-time temperature value and the temperature control coefficient to the ground control base through the satellite service platform. Ground staff can know all temperature values and working states of the polarization analyzer in the on-orbit life cycle by looking up working parameters and can be used as auxiliary bases for analyzing observation data of the load platform and evaluating the residual working life of the load platform.
Drawings
FIG. 1 is a schematic block diagram of a high-precision satellite-borne temperature control system according to the present invention;
FIG. 2 is a circuit diagram of a high-precision satellite-borne temperature control system according to the present invention;
FIG. 3 is a temperature control flow of the high-precision satellite-borne temperature control method of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in FIG. 1, the high-precision satellite-borne temperature control system comprises a first temperature measurement circuit and a second temperature measurement circuit.
The output end of the first temperature measuring circuit is connected with the input end of the first amplifying circuit and the input end of the acquisition module respectively, and the output end of the first amplifying circuit is connected with the input end of the acquisition module.
The output end of the second temperature measuring circuit is connected with the input end of the second amplifying circuit and the input end of the acquisition module respectively, and the output end of the second amplifying circuit is connected with the input end of the acquisition module.
The output end of the acquisition module is connected with the input end of the control and processing module, and the output end of the control and processing module is respectively connected with the input end of the first temperature control module and the input end of the second temperature control module; the output end of the first temperature control module is connected with the input end of the first heating wire module; the output end of the second temperature control module is connected with the output end of the first heating wire module.
The first temperature measuring circuit, the first amplifying circuit, the first temperature control module and the first temperature control module form a master temperature control link. The second temperature measuring circuit, the second amplifying circuit, the second temperature control module and the second temperature control module form a backup temperature control link. When any one of the paths is abnormal, the backup temperature control link automatically intervenes without intervention of a third party. The continuous and stable work of the temperature control system is guaranteed, the reliability and the safety of the temperature control system are improved, and the high-precision satellite-borne temperature control system has wider adaptability and practicability.
The first temperature measuring circuit and the second temperature measuring circuit have the same structure. The first temperature measuring circuit comprises a first thermistor module, a bridge conversion module and a signal conditioning module.
The output end of the first thermistor module is connected with the input end of the bridge conversion module, the output end of the bridge conversion module is connected with the input end of the signal conditioning module, and the output end of the signal conditioning module is respectively connected with the input end of the first amplifying circuit and the input end of the acquisition module.
The second temperature measuring circuit comprises a second thermistor module, a bridge conversion module and a signal conditioning module; the output end of the second thermistor module is connected with the input end of the bridge conversion module, the output end of the bridge conversion module is connected with the input end of the signal conditioning module, and the output end of the signal conditioning module is respectively connected with the input end of the second amplifying circuit and the input end of the acquisition module.
Examples
As shown in fig. 2, as can be seen from the application circuit schematic block diagram, the interface of the temperature measurement circuit adopts a wheatstone bridge to convert the resistance into a voltage, and the load voltage of the wheatstone bridge arm is provided by a reference source, so as to ensure the conversion accuracy of the temperature; the design of the rear-end acquisition circuit adopts a step-by-step approximation iterative acquisition mode: the first stage performs primary acquisition (rough acquisition), acquires a current temperature rough value in a full temperature range, and starts a first stage temperature control mechanism (full power or 0 power) to rapidly adjust the temperature of the device to be measured to a target temperature range; then the second stage is used for collecting (fine mining), a small signal amplifying circuit is used for obtaining a current temperature accurate value within a narrow range (plus or minus 2.5 ℃), a second stage temperature control mechanism (real-time PID dynamically adjusts the heating duty ratio) is started to enable the temperature of the tested device to approach a target temperature value in a smooth micro-amplitude oscillation mode, and finally dynamic balance is achieved.
TABLE 1 list of pin devices of application circuit
In addition, in the design method, the temperature measurement interface and the temperature control interface are designed by double backup, and a mechanism of main backup switching is added in a closed-loop temperature control strategy. A closed-loop temperature control link structure is formed by a main temperature measurement circuit and a main temperature control circuit by default, and when any one of the circuits is abnormal, a backup temperature control link is automatically intervened without intervention of a third party. The design method not only ensures the continuous and stable work of the temperature control system, but also improves the reliability and the safety of the temperature control system, so that the high-precision satellite-borne temperature control system has wider adaptability and practicability.
As shown in fig. 3, the high-precision satellite-borne temperature control method provided by the invention comprises the following specific steps:
step 1, receiving an external instruction, updating a target temperature value of a temperature control system, and if a relevant instruction is not received, maintaining a default value of 35 ℃;
step 2, starting the temperature rough mining of the master temperature control link, and judging a collected value: whether the temperature is greater than the lower limit value of the temperature control interval. If yes, comparing the temperature with the upper limit value of the temperature control area; if not, recording the acquisition times;
step 3, judging the collection times: whether less than 10 times. If yes, starting full-power heating and returning to the step 2; if not, reading the first and last acquisition values for judgment;
step 4, judging the first and last acquisition values: whether or not there is a deviation of 10%. If yes, starting full-power heating and returning to the step 2; if not, marking the abnormity of the master temperature measurement link, remotely measuring a reference position of a tool and starting a backup temperature measurement link;
step 5, comparing the rough mining temperature value with the upper limit value of the temperature control area when the rough mining temperature value is greater than the temperature control limit: whether the temperature is less than the upper limit value of the temperature control interval. If yes, entering a fine mining process; if not, recording the acquisition times;
step 6, judging the acquisition times: whether less than 10 times. If yes, stopping heating and returning to the step 2; if not, reading the first and last acquisition values for judgment;
step 7, judging the first and last acquisition values: whether there is a 10% deviation. If yes, stopping heating and returning to the step 2; if not, marking the abnormity of the master temperature measurement link, remotely measuring a reference position of a tool and starting a backup temperature measurement link;
step 8, after entering temperature fine mining, judging the acquisition value and the accurate temperature control interval: whether it is below the target value of 0.05 ℃. If yes, PID full-power heating is carried out, and the step 2 is returned; if not, further judging the upper limit of the accurate interval;
and 9, judging the upper limit of the accurate temperature control interval: whether it is higher than the target value of 0.03 deg.c. If yes, stopping heating and returning to the step 2; if not, substituting the acquired value into a PID temperature control algorithm to calculate the heating duty ratio, controlling the heating power by adopting a PWM mode, and returning to the step 8.
Step 10, starting temperature rough sampling of a backup temperature control link, and judging a collected value: whether the temperature is greater than the lower limit value of the temperature control interval. If yes, comparing the temperature with the upper limit value of the temperature control area; if not, recording the acquisition times;
step 11, judging the collection times: if less than 10 times. If yes, starting full-power heating and returning to the step 10; if not, reading the first and last acquisition values for judgment;
step 12, judging the first and last acquisition values: whether there is a 10% deviation. If yes, starting full-power heating and returning to the step 10; if not, marking the backup temperature measurement link as abnormal, and ending temperature control;
step 13, comparing the rough mining temperature value with the upper limit value of the temperature control area when the rough mining temperature value is larger than the temperature control limit value: whether the temperature is less than the upper limit value of the temperature control interval. If yes, entering a fine mining process; if not, recording the acquisition times;
step 14, judging the acquisition times: whether less than 10 times. If yes, stopping heating and returning to the step 10; if not, reading the first and last acquisition values for judgment;
step 15, judging the first and last acquisition values: whether or not there is a deviation of 10%. If yes, stopping heating and returning to the step 10; if not, marking the backup temperature measurement link as abnormal, and ending temperature control;
step 16, after entering temperature fine mining, judging the acquisition value and the accurate temperature control interval: whether it is below the target value of 0.05 ℃. If yes, PID full power heating is carried out and the step 10 is returned; if not, further judging the upper limit of the accurate interval;
step 17, judging the upper limit of the accurate temperature control interval: whether it is higher than the target value of 0.03 ℃. If yes, stopping heating and returning to the step 10; if not, substituting the acquired value into a PID temperature control algorithm to calculate the heating duty ratio, controlling the heating power by adopting a PWM mode, and returning to the step 16.
Step 18, the final temperature control algorithm will cycle back and forth between step 16 and step 17 to achieve dynamic equilibrium.
The method is based on the traditional temperature control system design framework, the design structure of a temperature measurement and control application circuit is expanded, a multi-stage approach temperature measurement mode is adopted, temperature acquisition is divided into a coarse acquisition temperature section and a fine acquisition temperature section, accurate temperature measurement is realized through small signal amplification, and the temperature measurement resolution is improved; the temperature control mode is adjusted to be a temperature control strategy with multiple combinations of full-power rapid heating, 0-power rapid cooling, PID (proportion integration differentiation) smooth variable-frequency micro-oscillation heating and the like, so that the temperature control response speed is improved, the adjustment precision of one-thousandth of the heating power resolution is realized, the temperature control stability of the satellite-borne temperature control system is effectively improved, and the high-precision satellite-borne temperature control system has wider adaptability and practicability. The constant temperature control requirement of the traditional satellite platform cabin is met, and the system is more suitable for the precise constant temperature control requirement of a temperature sensitive device (temperature change in hundredth level).
In addition, the invention adopts double backup redundancy design on the application circuit and the strategy method, and adds multi-stage judgment processing on the strategy, thereby greatly improving the intelligence, reliability and safety of the satellite-borne temperature control system.
Claims (9)
1. A high-precision satellite-borne temperature control system is characterized by comprising a first temperature measurement circuit and a second temperature measurement circuit;
the output end of the first temperature measuring circuit is respectively connected with the input end of the first amplifying circuit and the input end of the acquisition module, and the output end of the first amplifying circuit is connected with the input end of the acquisition module;
the output end of the second temperature measuring circuit is respectively connected with the input end of the second amplifying circuit and the input end of the acquisition module, and the output end of the second amplifying circuit is connected with the input end of the acquisition module;
the output end of the acquisition module is connected with the input end of the control and processing module, and the output end of the control and processing module is respectively connected with the input end of the first temperature control module and the input end of the second temperature control module; the output end of the first temperature control module is connected with the input end of the first heating wire module; the output end of the second temperature control module is connected with the output end of the first heating wire module.
2. A high-precision satellite-borne temperature control system according to claim 1, wherein the interfaces of the first temperature measurement circuit and the second temperature measurement circuit are Wheatstone bridges.
3. The high-precision satellite-borne temperature control system according to claim 1, wherein the first temperature measuring circuit and the second temperature measuring circuit are identical in structure.
4. The high-precision satellite-borne temperature control system according to claim 1, wherein the first temperature measuring circuit comprises a first thermistor module, a bridge conversion module and a signal conditioning module;
the output end of the first thermistor module is connected with the input end of the bridge conversion module, the output end of the bridge conversion module is connected with the input end of the signal conditioning module, and the output end of the signal conditioning module is respectively connected with the input end of the first amplifying circuit and the input end of the acquisition module.
5. A high-precision satellite-borne temperature control method is characterized by comprising the following processes,
the first temperature measurement circuit performs first-stage preliminary acquisition, acquires a current rough temperature value in a full temperature range, and starts a first-stage temperature control mechanism to regulate the temperature of the device to be measured to a target temperature range; then, the second-stage acquisition is carried out, a current temperature accurate value is obtained through a first amplifying circuit, a second-stage temperature control mechanism is started, and the real-time PID dynamically adjusts the heating duty ratio to enable the temperature of the device to be measured to approach a target temperature value in a smooth micro-amplitude oscillation mode, so that dynamic balance is achieved;
when the first temperature measuring circuit is abnormal, the control and processing module starts the second temperature measuring circuit to control the temperature.
6. A high-precision satellite-borne temperature control method according to claim 5, characterized by comprising the following steps,
step 1, a first temperature measuring circuit performs temperature rough collection and judges a temperature collection value: whether the temperature is greater than the lower limit value of the temperature control interval or not; if the temperature is greater than the lower limit value of the temperature control interval, comparing the temperature with the upper limit value of the temperature control interval, and executing the step 4; if the temperature is less than the lower limit value of the temperature control interval, recording the acquisition times, and executing the step 2;
step 2, judging the collection times in the step 1: whether the frequency is less than the preset frequency or not, if so, starting full-power heating and returning to the step 1; if the number of times is more than the preset number of times, reading the first and last acquisition values for judgment, and executing the step 3;
step 3, judging whether the first and last acquisition values are within the deviation range, if so, starting full-power heating and returning to the step 1; if not, marking that the first temperature measuring circuit is abnormal, starting a second temperature measuring circuit by the control and processing module, and executing the step 9;
step 4, comparing the rough mining temperature value with the upper limit value of the temperature control area when the rough mining temperature value is larger than the temperature control limit value: if the temperature is smaller than the upper limit value of the temperature control interval, entering a fine mining process, and executing a step 7; if not, recording the acquisition times, and executing the step 5;
step 5, judging the collection times: if the number of times is less than the preset number of times, stopping heating and returning to the step 1; if not, reading the first and last acquisition values for judgment;
step 6, judging the first and last acquisition values: if the deviation is within the deviation range, stopping heating and returning to the step 1; if not, marking that the first temperature measuring circuit is abnormal, starting a second temperature measuring circuit by the control and processing module, and executing the step 9;
and 7, after entering temperature fine mining, judging the acquisition value and the accurate temperature control interval: if the deviation range is lower than the target value, PID full-power heating is carried out, and the step 1 is returned to; if not, further judging the upper limit of the accurate interval;
step 8, accurate temperature control interval upper limit judgment: a deviation range of whether or not higher than a target value; if yes, stopping heating and returning to the step 1; if not, substituting the acquired value into a PID temperature control algorithm to calculate the heating duty ratio, controlling the heating power by adopting a PWM mode and returning to the step 7;
step 9, the second temperature measuring circuit performs temperature rough collection and judges a temperature collection value: whether the temperature is greater than the lower limit value of the temperature control interval or not; if the temperature is greater than the lower limit value of the temperature control interval, comparing the temperature with the upper limit value of the temperature control interval, and executing the step 12; if the temperature is less than the lower limit value of the temperature control interval, recording the acquisition times, and executing the step 10;
step 10, judging the collection times in the step 1: if the number of times is less than the preset number of times, starting full-power heating and returning to the step 9; if the number of times is more than the preset number of times, reading the first and last acquisition values for judgment, and executing the step 11;
step 11, judging whether the first and last acquisition values are within a deviation range, if so, starting full-power heating and returning to the step 9; if not, marking that the second temperature measuring circuit is abnormal, and ending temperature control;
step 12, comparing the rough mining temperature value with the upper limit value of the temperature control area when the rough mining temperature value is larger than the temperature control limit value: if the temperature is smaller than the upper limit value of the temperature control interval, entering a fine mining process and executing the step 15; if not, recording the acquisition times, and executing the step 13;
step 13, judging the collection times: if the number of times is less than the preset number of times, stopping heating and returning to the step 9; if not, reading the first and last acquisition values for judgment;
step 14, judging the first and last acquisition values: if the deviation is within the deviation range, stopping heating and returning to the step 9; if not, marking that the second temperature measuring circuit is abnormal, and ending temperature control;
step 15, after entering temperature fine mining, judging the acquisition value and the accurate temperature control interval: if the deviation range is lower than the target value, if so, PID full-power heating is carried out, and the step 9 is returned to; if not, further judging the upper limit of the accurate interval;
step 16, accurate temperature control interval upper limit judgment: a deviation range of whether or not higher than a target value; if yes, stopping heating and returning to the step 9; if not, substituting the acquired value into a PID temperature control algorithm to calculate the heating duty ratio, controlling the heating power by adopting a PWM mode, and returning to the step 15.
7. A high-precision satellite-borne temperature control method according to claim 6, wherein in step 1, before rough mining, the control and processing module receives an external instruction, updates the target temperature value of the temperature control system, and maintains a default value of 35 ℃ if no relevant instruction is received.
8. A high-precision satellite-borne temperature control method according to claim 6, wherein in the step 1, the preset number of the acquisition times is 10.
9. A high-precision satellite-borne temperature control method according to claim 6, wherein in the step 1, the deviation range between the first-time acquisition value and the last-time acquisition value is 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211310470.9A CN115657756A (en) | 2022-10-25 | 2022-10-25 | High-precision satellite-borne temperature control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211310470.9A CN115657756A (en) | 2022-10-25 | 2022-10-25 | High-precision satellite-borne temperature control system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115657756A true CN115657756A (en) | 2023-01-31 |
Family
ID=84990926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211310470.9A Pending CN115657756A (en) | 2022-10-25 | 2022-10-25 | High-precision satellite-borne temperature control system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115657756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116986020A (en) * | 2023-09-26 | 2023-11-03 | 长光卫星技术股份有限公司 | Small satellite active thermal control method based on thermal characteristics of controlled object |
-
2022
- 2022-10-25 CN CN202211310470.9A patent/CN115657756A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116986020A (en) * | 2023-09-26 | 2023-11-03 | 长光卫星技术股份有限公司 | Small satellite active thermal control method based on thermal characteristics of controlled object |
| CN116986020B (en) * | 2023-09-26 | 2023-12-01 | 长光卫星技术股份有限公司 | Small satellite active thermal control method based on thermal characteristics of controlled object |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111123011B (en) | Electronic load device and parallel operation system thereof | |
| CN115657756A (en) | High-precision satellite-borne temperature control system and method | |
| WO2003077447A1 (en) | Digital regulated light receive module and regulation method | |
| CN107870000A (en) | Raising optical fibre gyro bias instaility method based on Polynomial Fitting Technique | |
| CN110426552A (en) | A method of current sample precision is improved by numerically controlled temperature-compensating | |
| CN116643600B (en) | Inertial navigation temperature control method and system based on dynamic instruction algorithm | |
| CN110702735A (en) | Residual chlorine electrode calibration method and water quality detection instrument | |
| CN201498355U (en) | Analog signal processing device of electronic current transformer | |
| CN205982345U (en) | Intelligence load numerical control resistance box | |
| CN110726852A (en) | MEMS accelerometer temperature compensation method | |
| CN111856133A (en) | Electric energy metering device and metering method suitable for direct current large current | |
| CN102157744B (en) | Constant voltage discharge adjusting device of fuel cell and adjusting method thereof | |
| CN111273632A (en) | SVG controller parameter identification method based on RTDS test data | |
| CN109766632B (en) | System simulation analysis method for temperature control of mechanical refrigerator | |
| CN104101418A (en) | Electronic analytical balance trace loading and drift discrimination method | |
| CN111077782B (en) | Continuous system U model disturbance rejection controller design method based on standard | |
| CN112798135A (en) | Temperature sensor algorithm | |
| CN114509185A (en) | System and method for partitioning measurement precision of surface acoustic wave temperature sensor in low-temperature environment | |
| CN114325326A (en) | Automatic test system and method for chip electrical performance and controllable power supply module thereof | |
| CN100449930C (en) | Alternating current machine speed charateristic control method for engine performance rack | |
| CN210072357U (en) | High-temperature sensitive pressure sensing control system | |
| CN219245649U (en) | Bus current detection circuit | |
| CN112816757A (en) | All-fiber current transformer and half-wave voltage correction method thereof | |
| Lu et al. | Study on the detection system for electric control cabinet | |
| CN220153623U (en) | Lightweight nondestructive testing system for bridge inspection |
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 |