CN114229043B - Intelligent active heat control method of heat control system based on power and temperature balance - Google Patents
Intelligent active heat control method of heat control system based on power and temperature balance Download PDFInfo
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Abstract
The invention discloses an intelligent active heat control method of a heat control system based on power and temperature balance, which is characterized by comprising the following steps: 1) Collecting data; 2) Initializing system parameters; 3) Judging the opening condition; 4) Determining a heating priority by using the weight; 5) Starting a first heating mode; 6) Heating for the first time to meet a set value; 7) The heating mark is changed into a heated mark; 8) Entering a temperature control mode; 9) Entering a PWM temperature control mode; 10 Temperature timing judgment; 11 Withdrawal from heating; 12 Judging the failure duty ratio; 13 Entering an idle wait timer. The method is based on a current loop thermal control mode of PWM duty ratio adjustment, ensures that the total power does not exceed the set power under the condition of balanced heating of each channel, and ensures the balance of the power.
Description
Technical Field
The invention relates to a spacecraft technology, in particular to a spacecraft thermal control technology and a power supply technology, and specifically relates to an intelligent active thermal control method of a thermal control system based on power and temperature balance.
Background
In general, the thermal control of the spacecraft equipment is satisfied by heat dissipation, thermal insulation, and other thermal control techniques. However, when the spacecraft is influenced by complex environmental factors of the spacecraft running orbit, running gesture and equipment working mode, the adoption of the active thermal control technology can ensure that the equipment can realize normal running of the equipment under the expected environmental temperature by means of active temperature control under the low-temperature environment. The common active heat control method often adopts a temperature sensor as a unique index of temperature control to carry out closed loop return adjustment, and for each system module of the spacecraft, the temperature control is simply used as the aim, and irregular abrupt change of power consumption can be caused while the temperature control is solved, so that the influence on the overall power quality of the spacecraft is not negligible.
Along with the complex and diversified development of spacecraft tasks, the control requirements of all system modules of the spacecraft on temperature are higher and higher, and higher energy consumption requirements are required for an active heat control system, in practical application, the heat control peak power consumption distributed by a power supply system to the heat control system is far smaller than the total rated power consumption of a heating load applied by heat control, and in order to prevent power overload, the heat control units cannot be fully operated under full load, and the heat control units must be matched with a reasonable heat control strategy to perform heat control.
In the prior art, patent publication number CN202011068753.8 discloses an autonomous heat control method for a spacecraft with balanced power, the technical scheme performs power temperature control treatment by enabling heat control in stages, establishes a plurality of sub-modes by setting heat control sub-modes to ensure that the total power of the heat control does not exceed the peak power, and establishes a plurality of heat control sub-modes in which the total power of a heater in a temperature control loop enabled in each sub-mode does not exceed the peak power, wherein the temperature control loop enabled in all sub-modes covers the temperature control loop required by the heat control mode, and the temperature control is performed by sub-analog switching to ensure that the total power of the heat control does not exceed the rated power of the heat control, and the technical scheme mainly has the following defects: according to the technical scheme, a heater control loop is combined into a thermal control sub-mode execution module, total power of the sub-module is compared with peak power of a spacecraft, the sub-mode is periodically switched on the premise that total power of the sub-module is met and the peak power of the spacecraft is not exceeded, when the thermal control sub-mode is heated, the temperature control target temperature of the sub-module meets a temperature control threshold value, then the next sub-mode is switched, the switching condition has a larger defect in practical application, when a heater contained in the sub-module can work, the sub-module is influenced by environment and other factors, if the temperature of the heater of the sub-module cannot be increased to the target temperature, the method can be always stopped in the sub-module, the temperature control requirements of other parts cannot be met, the whole set of temperature control system can fall into a paralysis state, so that the good operation of the actual whole temperature control system is ensured while the constant power of the thermal control is ensured, and otherwise, the primary aim of neglecting the thermal control is to perform thermal control on each heating part arranged, so that the thermal control cannot be lost;
the patent publication number CN202010125481.4 discloses a satellite power temperature control method, the technical scheme sets a power target value, then calculates the sum of the power of the temperature control mechanism after opening, adjusts the opening or closing of the temperature control mechanism by comparing the set rated thermal control power with the sum of the actual monitored thermal control power in one temperature control period, if the actual power is greater than the set power, closes the heater with the temperature closest to the set temperature value in the next temperature control period, and if the actual power is less than the set power, opens the heater with the maximum difference between the temperature and the set temperature in the next temperature control period, the technical scheme has the following main disadvantages: the technical scheme only takes the maximum difference between the current temperature measurement point temperature and the set temperature as the heating priority, and the core heating point between the set temperature and the lowest temperature, in the technical scheme, the heating authority is required to be obtained again until the temperature is reduced to the set lowest value of the temperature measurement point, but the fluctuation is very large according to the temperature time curve of a certain core heating point, and the actual requirement of certain heating points cannot be met.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides an intelligent active heat control method of a heat control system based on power and temperature balance. The method is based on a current loop thermal control mode of PWM duty ratio adjustment, ensures that the total power does not exceed the set power under the condition of balanced heating of each channel, and ensures the balance of the power.
The technical scheme for realizing the aim of the invention is as follows:
the intelligent active heat control method of the heat control system based on power and temperature balance comprises the following steps:
1) 1) collecting data: the method comprises the steps of adding a current monitoring device to 1-N channels of a heating channel of a thermal control circuit board for collecting 1-N channels of currents and calculating 1-N channels of power consumption, wherein N is a natural number, the 1 channel of power consumption is W1 … N, the channel of power consumption is Wn, the total thermal control power consumption is W, adding N heating loops to the temperature control circuit board in the prior art, adding a current detection device to the power side of each heating loop, and adding a current monitoring device to a thermal control bus power supply for monitoring the total thermal control current and calculating the total thermal control power consumption, so that the real-time electric quantity consumption of each electric equipment can be obtained;
2) Initializing system parameters: instruction cycle t 1 、t 2 …t n The method for initializing the system parameters before starting up by using the time slices for counting once in each cycle of the operation period comprises the following steps: setting a temperature loop PID value, a current loop PID value and a total power threshold P of a temperature control system set Setting a temperature control target value T of each temperature measuring point set1 、T set2 …T setn Setting heating weight value W of each channel 1 、W 2 …W n Initializing a heating channel flag bit;
3) Judging the opening condition: after the system is started, the temperature sensor monitors the ambient temperature in real time and judges the ambient temperature in each time slice period, and the current temperature T current1 、T current2 …T currentn Below the set temperature T set1 、T set2 …T setn I.e. determine T current1 ≤T set1 、T current2 ≤T set2 …T currentn ≤T setn If the condition is satisfied, executing the step 4) if the corresponding temperature acquisition channel satisfies the above-mentioned judgment condition, and if the judgment condition is not satisfied, not enabling the thermal control;
4) Determining heating priority by weight: step 3) after judging that the opening condition is met, further carrying out descending order on the weights of the heating channels meeting the opening condition, taking the first n channels with high priority level to start thermal control in the current time slice, judging that the lowest temperature heating channel is heated preferentially by the same weight heater, and taking the n channels to be at the t < th > n The time slices are started, so that the instant power mutation is caused by not all heating channels being started at the same time, and the selection requirement of n is related to the capacity of a heating system;
5) The first heating mode is turned on: if the current heating channel heating zone bit is the first heating zone bit, heating to a set temperature value according to rated power;
6) The first heating meets the set value: judging whether the first heating sensor enters a set heating temperature value T currentn ≥T setn If T currentn ＜T setn Continue heating if T currentn ≥T setn Step 7) is entered;
7) The heated mark is changed to a heated mark: the first heating zone bit is changed into a heated zone bit by entering a set value, the heated zone bit is used as a condition for entering PWM control, a channel of the zone bit is heated, full-power operation is not performed before the zone bit is not cleared, and PWM control is directly entered;
8) Entering a temperature control mode: judging whether the current heated channel weight is the highest priority, if so, the heated channel is not affected by dynamic adjustment PWM, enters an autonomous heating mode, always keeps a set temperature, enters a temperature ring, and otherwise, enters step 9);
9) Entering a PWM temperature control mode: each channel enters PWM duty ratio to regulate and heat, each channel follows the duty ratio to regulate and heat, so that the total power consumption does not exceed the set total power value, the current loop control is performed, and the current loop control judges the current total heating power P current Whether or not it is smaller than the set totalPower value P set If smaller than the total power value, the duty cycle is increased, if the total power P is currently being heated current Greater than the set total power value P set The duty cycle is reduced;
10 Temperature timing judgment: judging whether the temperature value of each heating channel is larger than the set temperature or not every n time periods;
11 Withdrawal from heating: if the current heated channel temperature is greater than the set temperature value, exiting heating, entering a to-be-heated area, and clearing a heating mark position;
12 Failure duty cycle judgment): judging whether the PWM duty ratio of the current channel is the lowest PWM duty ratio, if so, continuing to heat the heating channel current loop, if so, exiting the heating of the current channel, entering the heating to be performed, and clearing the heating mark bit;
13 Entering an idle wait timer: and (3) entering idle timing of the channels entering the heating area, namely, timing a bit m time period, and judging whether each heating channel is lower than the minimum value of the allowable temperature fluctuation or not by timing time, if the temperature minimum value is reached, returning to the step (4), and if the temperature allowable minimum value is not met, emptying a timer and re-timing.
According to the technical scheme, the spacecraft component is thermally implemented according to the thermal analysis guidance opinion, the guidance data obtained through the thermal analysis are used for obtaining a plurality of temperature control points for subsequent thermal control implementation, and the weight of each thermal control point is divided according to the relative importance of the thermal control points, for example: the weight of the thermal control point 1 is 1, the weight of the thermal control point 2 is 2, the weight of the thermal control point N is N, and the smaller the weight value is, the higher the priority in thermal control, the weight pointed by the technical scheme is not limited to one weight corresponding to one thermal control point, and comprises a plurality of thermal control points corresponding to one weight, the weight is initially provided as the heating priority of the heating system to be distinguished, but can be expanded to form functional distinction under different weights so as to adapt to the complex temperature control requirement of the thermal control environment.
In the technical scheme, the heating component is a film type electric heater, an electric heating belt, an armored heater, a wire-wound resistor, a ceramic-metal integrated heater and the like, and the sensor mainly comprises a temperature sensor, such as an NTC thermistor, a PT100 platinum resistor, a PT1000 platinum resistor and the like, and closed-loop feedback control is carried out by utilizing temperature data acquired by the temperature sensor and an execution heating mechanism.
In the technical scheme, in order to enable the temperature control actuating mechanism to effectively control the output size of current, each path of thermal control adopts a PWM (Pulse Width Modulation) pulse width modulation method to adjust a duty ratio control signal, the current flowing through the heating mechanism is adjusted by adjusting the duty ratio, and the power of the heating mechanism is controllable by adjusting the current flowing through the heating mechanism.
In the technical scheme, the acquired real-time temperature data and current data are utilized, and a heating weight value defined according to the working condition of equipment by utilizing thermal analysis is used as the input quantity of the intelligent active thermal control method based on power distribution.
After the thermal control is enabled in the technical scheme, when each temperature measuring point detects that the environmental temperature value is lower than the set thermal control starting threshold T th1 、T th2 …T thn When the thermal control channel corresponding to the temperature measuring point is opened for periodic thermal control, the thermal control channel corresponding to the temperature measuring point is not limited to one thermal control channel corresponding to one temperature measuring point, and the thermal control channel corresponding to a plurality of temperature measuring points is included, and temperature detection data of the temperature measuring point is used as feedback adjustment quantity of a plurality of heating mechanisms.
In the technical scheme, the temperature control system realizes a PWM control period T in which a heating mechanism is arranged, and all heating execution mechanisms of the temperature control system are circularly carried out in the PWM heating period, namely T 1 、T 2 …T x Wherein x=1, 2 …; the total power control and the power control of each channel are realized by adjusting the PWM duty ratio.
In the technical scheme, a total power threshold P of a temperature control system is set set Setting a total power threshold to ensure the current total power P consumed by the heating mechanism during operation current Setting the temperature control target value T of each temperature measuring point without exceeding the total power threshold set1 、T set2 …T setn Setting the temperature control target value of each temperature measuring point to calculate each temperature measuring pointActual temperature measurement value T of point current And target value T set Error E of (2) current By means of error E current Realizing the closed-loop control of the thermal control channels and setting the heating weight value W of each channel 1 、W 2 …W n The heating executing mechanism can be guided and controlled by reasonably distributing the weight values to the temperature measuring points, and the configuration parameter setting can be preset in advance through system parameters or updated in real time through ground-end telemetry instructions.
In the technical scheme, for a channel which enters heating for the first time, enabling heating is started and operates according to full power, but starting full power heating tends to cause the heating power of a local end to be increased, the duty ratio of a thermal control channel with low weight value is reduced at the moment, and likewise, a heating point with high weight value is not affected, heating is continuously performed according to a set temperature, a heating mark position is marked for the first time, and the first time heating is defined herein, compared with the exiting heating, if one heating channel exits heating, a heating mark is cleared, the heating is performed again, and the marking heating mark position is marked, then the first time heating is called.
In the technical scheme, a PWM dynamic regulation mode is entered, the current value of a corresponding channel is detected at the same time, and whether the total channel consumption power is higher than a total power threshold value P is calculated set If it is higher than the total power threshold P set The duty ratio of the channel is adjusted, the PWM duty ratio adjustment ratio is adjusted according to the internal resistance relation of the heating devices, that is, in order to avoid global heating non-uniformity caused by adjusting the duty ratio of only one heating device, according to the self characteristics of the heating devices, the power calculation formula p=i is given by 2 R, it can be derived that the heating device power is related to the current flowing through the heating device and the internal resistance of the heating device itself, and the total resistance of the heating device is known as R total The distribution current of the heating unit is according to the heating current in the PWM mode
Proportional distribution, e.g. total heating current at rated power I total The average current in the high-authority mode is I aver In PWM modeThe total heating current is I PWM ＝I total -I aver The current allocated per channel in PWM mode is +.>
The current power value is enabled to be within the total power threshold, but the authority of the weight is clear, so that when PWM is reduced, the high-weight heating power point is still mainly regulated and controlled by the temperature, when heating equipment which is heated into the PWM mode and takes current as a main regulation mode is increased, the average total current can lead the current of each path to be smaller, the heating mechanism can not play a role in heating when the duty ratio is reduced to a certain value, the heating mechanism is required to be thoroughly closed at the moment, the duty ratio critical value is required to be calibrated for different heating mechanisms in an experiment in actual engineering, and the closed heating channel enters a time zone of a meter to be heated.
The technical scheme realizes the accurate control of the power consumption of each path of heater to realize the total power balance output, solves the problem of uneven power distribution caused by the fact that the traditional power thermal control only depends on the total current as the only parameter of the power control by collecting the current of each path of heating mechanism, controls the power consumption of each path of heating mechanism by adjusting the PWM duty ratio of the heater in real time through a dynamic weight temperature control strategy, improves the order and pertinence in the temperature control process, and can ensure that the core heating electricity keeps constant temperature.
The method is based on a current loop thermal control mode of PWM duty ratio adjustment, ensures that the total power does not exceed the set power under the condition of balanced heating of each channel, and ensures the balance of the power.
Drawings
FIG. 1 is a schematic flow chart of a method according to an embodiment.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings and examples, which are not intended to limit the scope of the invention,
examples:
referring to fig. 1, the intelligent active heat control method of the heat control system based on power and temperature balance comprises the following steps:
1) Collecting data: the method comprises the steps of adding a current monitoring device to 1-N channels of a heating channel of a thermal control circuit board for collecting 1-N channels of currents and calculating 1-N channels of power consumption, wherein N is a natural number, the 1 channel of power consumption is W1 … N, the channel of power consumption is Wn, the total thermal control power consumption is W, adding N heating loops to the temperature control circuit board in the prior art, adding a current detection device to the power side of each heating loop, and adding a current monitoring device to a thermal control bus power supply for monitoring the total thermal control current and calculating the total thermal control power consumption, so that the real-time electric quantity consumption of each electric equipment can be obtained;
2) Initializing system parameters: instruction cycle t 1 、t 2 …t n The method for initializing the system parameters before starting up by using the time slices for counting once in each cycle of the operation period comprises the following steps: setting a temperature loop PID value, a current loop PID value and a total power threshold P of a temperature control system set Setting a temperature control target value T of each temperature measuring point set1 、T set2 …T setn Setting heating weight value W of each channel 1 、W 2 …W n Initializing a heating channel flag bit;
3) Judging the opening condition: after the system is started, the temperature sensor monitors the ambient temperature in real time and judges the ambient temperature in each time slice period, and the current temperature T current1 、T current2 …T currentn Below the set temperature T set1 、T set2 …T setn I.e. determine T current1 ≤T set1 、T current2 ≤T set2 …T currentn ≤T setn If the condition is satisfied, executing the step 4) if the corresponding temperature acquisition channel satisfies the above-mentioned judgment condition, and if the judgment condition is not satisfied, not enabling the thermal control;
4) Determining heating priority by weight: step 3) after judging that the opening condition is met, further reducing the weight of the heating channel meeting the opening conditionSequentially arranging, taking the first n channels with high priority level, starting thermal control in the current time slice, using the same-weight heater, judging that the lowest temperature heating channel heats preferentially, and taking the n channels at the t n The time slices are started, so that the instant power mutation is caused by not all heating channels being started at the same time, and the selection requirement of n is related to the capacity of a heating system;
5) The first heating mode is turned on: if the current heating channel heating zone bit is the first heating zone bit, heating to a set temperature value according to rated power;
6) The first heating meets the set value: judging whether the first heating sensor enters a set heating temperature value T currentn ≥T setn If T currentn ＜T setn Continue heating if T currentn ≥T setn Step 7) is entered;
7) The heated mark is changed to a heated mark: the first heating zone bit is changed into a heated zone bit by entering a set value, the heated zone bit is used as a condition for entering PWM control, a channel of the zone bit is heated, full-power operation is not performed before the zone bit is not cleared, and PWM control is directly entered;
8) Entering a temperature control mode: judging whether the current heated channel weight is the highest priority, if so, the heated channel is not affected by dynamic adjustment PWM, enters an autonomous heating mode, always keeps a set temperature, enters a temperature ring, and otherwise, enters step 9);
9) Entering a PWM temperature control mode: each channel enters PWM duty ratio to regulate and heat, each channel follows the duty ratio to regulate and heat, so that the total power consumption does not exceed the set total power value, the current loop control is performed, and the current loop control judges the current total heating power P current Whether or not it is smaller than the set total power value P set If smaller than the total power value, the duty cycle is increased, if the total power P is currently being heated current Greater than the set total power value P set The duty cycle is reduced;
10 Temperature timing judgment: judging whether the temperature value of each heating channel is larger than the set temperature or not every n time periods;
11 Withdrawal from heating: if the current heated channel temperature is greater than the set temperature value, exiting heating, entering a to-be-heated area, and clearing a heating mark position;
12 Failure duty cycle judgment): judging whether the PWM duty ratio of the current channel is the lowest PWM duty ratio, if so, continuing to heat the heating channel current loop, if so, exiting the heating of the current channel, entering the heating to be performed, and clearing the heating mark bit;
13 Entering an idle wait timer: and (3) entering idle timing of the channels entering the heating area, namely, timing a bit m time period, and judging whether each heating channel is lower than the minimum value of the allowable temperature fluctuation or not by timing time, if the temperature minimum value is reached, returning to the step (4), and if the temperature allowable minimum value is not met, emptying a timer and re-timing.
According to the method, the spacecraft component is thermally implemented according to the guidance opinion of thermal analysis, the guidance data obtained through the thermal analysis are used for obtaining a plurality of temperature control points for subsequent thermal control implementation, and the weight of each thermal control point is divided according to the relative importance of the thermal control points, for example: the weight of the thermal control point 1 is 1, the weight of the thermal control point 2 is 2, the weight of the thermal control point N is N, and the smaller the weight value is, the higher the priority in thermal control, the weight pointed by the technical scheme is not limited to one weight corresponding to one thermal control point, and comprises a plurality of thermal control points corresponding to one weight, the weight is initially provided as the heating priority of the heating system to be distinguished, but can be expanded to form functional distinction under different weights so as to adapt to the complex temperature control requirement of the thermal control environment.
In this example, the heating component is a thin film type electric heater, an electric heating belt, an armored heater, a wire wound resistor, a ceramic-metal integrated heater, etc., and the sensor mainly comprises a temperature sensor, such as an NTC thermistor, a PT100 platinum resistor, a PT1000 platinum resistor, etc., and the closed loop feedback control is performed by using the temperature data collected by the temperature sensor and the execution heating mechanism.
In this example, in order to enable the temperature control executing mechanism to effectively control the output size of the current, each path of thermal control adopts a PWM (Pulse Width Modulation) pulse width modulation method to adjust a duty ratio control signal, the current flowing through the heating mechanism is adjusted by adjusting the duty ratio, and the power of the heating mechanism is controlled by adjusting the current flowing through the heating mechanism.
In the example, the acquired real-time temperature data and current data are utilized, and a heating weight value defined according to the working condition of equipment by utilizing thermal analysis is used as the input quantity of the intelligent active thermal control method based on power distribution.
After the thermal control is enabled in the embodiment, when each temperature measuring point detects that the environmental temperature value is lower than the set thermal control starting threshold T th1 、T th2 …T thn When the thermal control channel corresponding to the temperature measuring point is opened for periodic thermal control, the thermal control channel corresponding to the temperature measuring point is not limited to one thermal control channel corresponding to one temperature measuring point, and the thermal control channel corresponding to a plurality of temperature measuring points is included, and temperature detection data of the temperature measuring point is used as feedback adjustment quantity of a plurality of heating mechanisms.
In this example, the temperature control system realizes a PWM control period T in which the heating mechanism is set, and all heating actuators of the temperature control system are circulated in the PWM heating period, i.e., T 1 、T 2 …T x Wherein x=1, 2 …; the total power control and the power control of each channel are realized by adjusting the PWM duty ratio.
In this example, a total power threshold P of the temperature control system is set set Setting a total power threshold to ensure the current total power P consumed by the heating mechanism during operation current Setting the temperature control target value T of each temperature measuring point without exceeding the total power threshold set1 、T set2 …T setn Setting a temperature control target value of each temperature measuring point to calculate an actual temperature measuring value T of each temperature measuring point current And target value T set Error E of (2) current By means of error E current Realizing the closed-loop control of the thermal control channels and setting the heating weight value W of each channel 1 、W 2 …W n The heating executing mechanism can be guided and controlled by reasonably distributing the weight values to the temperature measuring points, and the configuration parameter setting can be pre-performed by the system parametersThe setting is updated in real time or by a ground-end telemetry command.
In this example, for the first heating channel, the enabling heating is started and operates according to full power, but starting full power heating tends to increase the local heating power, at this time, the duty ratio of the other heat control channels with low weight should be reduced, and likewise, the heating point with high weight is not affected, heating is continuously performed according to the set temperature, the first heating should mark the heating mark position, and note that the first heating defined herein is relative to the exiting heating, if one heating channel exits heating, the heating mark is cleared, and enters heating again, marks the heating mark position, and is called first heating.
In this example, a PWM dynamic regulation mode is entered, and the current value of the corresponding channel is detected, and whether the total channel consumption power is higher than the total power threshold P is calculated set If it is higher than the total power threshold P set The duty ratio of the channel is adjusted, the PWM duty ratio adjustment ratio is adjusted according to the internal resistance relation of the heating devices, that is, in order to avoid global heating non-uniformity caused by adjusting the duty ratio of only one heating device, according to the self characteristics of the heating devices, the power calculation formula p=i is given by 2 R, it can be derived that the heating device power is related to the current flowing through the heating device and the internal resistance of the heating device itself, and the total resistance of the heating device is known as R total The distribution current of the heating unit is according to the heating current in the PWM mode
Proportional distribution, e.g. total heating current at rated power I total The average current in the high-authority mode is I aver The heating total current in PWM mode is I PWM ＝I total -I aver The current allocated per channel in PWM mode is +.>
The current power value is within the total power threshold, but the weight authority is higher than the authority, so that the high-weight heating power point still has the temperature when the PWM is reducedFor main regulation and control, when heating equipment for heating the PWM mode is increased, average total current can reduce the current obtained by each path, so that the duty ratio regulating heating mechanism can not play a role in heating when the duty ratio is reduced to a certain value, the heat control channel is required to be thoroughly closed at the moment, the duty ratio critical value is required to be calibrated for different heating mechanisms in actual engineering, and the closed heating channel enters a time zone to be heated. />
Claims (1)
1. The intelligent active heat control method of the heat control system based on power and temperature balance is characterized by comprising the following steps:
1) Collecting data: the method comprises the steps that a current monitoring device is additionally arranged on 1-N paths of heating channels of a thermal control circuit board and used for collecting 1-N paths of channel currents and calculating 1-N paths of channel power consumption, wherein N is a natural number, the 1-path power consumption value is W1 … N, the channel power consumption value is Wn, and the thermal control total power consumption value is W;
2) Initializing: instruction cycle t 1 、t 2 …t n The method for initializing the system parameters before starting up by using the time slices for counting once in each cycle of the operation period comprises the following steps: setting a temperature loop PID value, a current loop PID value and a total power threshold P of a temperature control system set Setting a temperature control target value T of each temperature measuring point set1 、T set2 …T setn Setting heating weight value W of each channel 1 、W 2 …W n Initializing a heating channel flag bit;
3) Judging the opening condition: after the system is started, the temperature sensor monitors the ambient temperature in real time and judges the ambient temperature in each time slice period, and the current temperature T current1 、T current2 …T currentn Below the set temperature T set1 、T set2 …T setn I.e. determine T current1 ≤T set1 、T current2 ≤T set2 …T currentn ≤T setn Whether or not the condition is fullIf the corresponding temperature acquisition channel meets the judgment condition, executing the step 4), and if the corresponding temperature acquisition channel does not meet the judgment condition, not enabling the thermal control;
4) Sequencing: step 3) after judging that the opening condition is met, further carrying out descending order on the weights of the heating channels meeting the opening condition, taking the first n channels with high priority level to start thermal control in the current time slice, and judging that the lowest-temperature heating channel is heated preferentially by the same-weight heater;
5) The first heating mode is turned on: if the current heating channel heating zone bit is the first heating zone bit, heating to a set temperature value according to rated power;
6) The first heating meets the set value: judging whether the first heating sensor enters a set heating temperature value T currentn ≥T setn If T currentn ＜T setn Continue heating if T currentn ≥T setn Step 7) is entered;
7) The heated mark is changed to a heated mark: the first heating zone bit is changed into a heated zone bit by entering a set value, the heated zone bit is used as a condition for entering PWM control, a channel of the zone bit is heated, full-power operation is not performed before the zone bit is not cleared, and PWM control is directly entered;
8) Entering a temperature control mode: judging whether the weight of a heating channel which is enabled to be heated at present is the highest priority, if so, the heating channel is not affected by dynamic adjustment PWM, enters an autonomous heating mode, always keeps a set temperature, enters a temperature ring, and otherwise, enters a step 9);
9) Entering a PWM temperature control mode: each channel enters PWM duty ratio to regulate and heat, each channel follows the duty ratio to regulate and heat, so that the total power consumption does not exceed the set total power value, the current loop control is performed, and the current loop control judges the current total heating power P current Whether or not it is smaller than the set total power value P set If smaller than the total power value, the duty cycle is increased, if the total power P is currently being heated current Greater than the set total power value P set The duty cycle is reduced;
10 Temperature timing judgment: judging whether the temperature value of each heating channel is larger than the set temperature or not every n time periods;
11 Withdrawal from heating: if the current heating enabled temperature is greater than the set temperature value, exiting heating, entering a heating zone to be heated, and clearing a heating mark position;
12 Failure duty cycle judgment): judging whether the PWM duty ratio of the current channel is the lowest PWM duty ratio, if so, continuing to heat the heating channel current loop, if so, exiting the heating of the current channel, entering the heating to be performed, and clearing the heating mark bit;
13 Entering an idle wait timer: and (3) entering idle timing of the channels entering the heating area, namely, timing a bit m time period, and judging whether each heating channel is lower than the minimum value of the allowable temperature fluctuation or not by timing time, if the temperature minimum value is reached, returning to the step (4), and if the temperature allowable minimum value is not met, emptying a timer and re-timing.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0357799A (en) * | 1989-07-27 | 1991-03-13 | Nec Corp | Thermal controller |
| DE4227070A1 (en) * | 1991-08-22 | 1993-03-11 | Gen Electric | Thermal controller for geosynchronous orbiting spacecraft - has combination of conductive panels and optically reflecting panels on spacecraft surface for thermal balance |
| JP2001097295A (en) * | 1999-09-30 | 2001-04-10 | Mitsubishi Electric Corp | Temperature control device for spacecraft |
| RU2005131238A (en) * | 2005-10-11 | 2007-04-20 | Открытое акционерное общество "Ракетно-космическа корпораци "Энерги " им. С.П. Королева" (RU) | METHOD FOR THERMAL ADJUSTMENT OF THE SPACE APPARATUS ONBOARD |
| CN103279157A (en) * | 2013-06-03 | 2013-09-04 | 北京空间飞行器总体设计部 | Temperature controlling method for satellite-borne rubidium clock temperature-control cabin |
| RU2014127238A (en) * | 2014-07-03 | 2016-02-10 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнева" | SPACE VEHICLE CONTROL SYSTEM |
| CN109245134A (en) * | 2018-11-14 | 2019-01-18 | 上海交通大学 | Adaptively regulate and control the hybrid energy-storing dispatching method and system of algorithm based on Virtual Fuzzy |
| WO2020214381A1 (en) * | 2019-04-16 | 2020-10-22 | Raytheon Company | Integrated thermal energy transport and storage structures |
| CN112265653A (en) * | 2020-09-30 | 2021-01-26 | 北京空间飞行器总体设计部 | Spacecraft autonomous thermal control method based on power balance |
| CN112849437A (en) * | 2021-01-11 | 2021-05-28 | 中国科学院微小卫星创新研究院 | On-orbit thermal control system and thermal control method for spacecraft |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4758716B2 (en) * | 2005-09-16 | 2011-08-31 | 株式会社タムラ製作所 | Control method of heating device |
| US20130306620A1 (en) * | 2012-05-21 | 2013-11-21 | Primestar Solar, Inc. | Heating system and methods for controlling the heaters of a heating system |
-
2021
- 2021-12-24 CN CN202111602032.5A patent/CN114229043B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0357799A (en) * | 1989-07-27 | 1991-03-13 | Nec Corp | Thermal controller |
| DE4227070A1 (en) * | 1991-08-22 | 1993-03-11 | Gen Electric | Thermal controller for geosynchronous orbiting spacecraft - has combination of conductive panels and optically reflecting panels on spacecraft surface for thermal balance |
| JP2001097295A (en) * | 1999-09-30 | 2001-04-10 | Mitsubishi Electric Corp | Temperature control device for spacecraft |
| RU2005131238A (en) * | 2005-10-11 | 2007-04-20 | Открытое акционерное общество "Ракетно-космическа корпораци "Энерги " им. С.П. Королева" (RU) | METHOD FOR THERMAL ADJUSTMENT OF THE SPACE APPARATUS ONBOARD |
| CN103279157A (en) * | 2013-06-03 | 2013-09-04 | 北京空间飞行器总体设计部 | Temperature controlling method for satellite-borne rubidium clock temperature-control cabin |
| RU2014127238A (en) * | 2014-07-03 | 2016-02-10 | Открытое акционерное общество "Информационные спутниковые системы" имени академика М.Ф. Решетнева" | SPACE VEHICLE CONTROL SYSTEM |
| CN109245134A (en) * | 2018-11-14 | 2019-01-18 | 上海交通大学 | Adaptively regulate and control the hybrid energy-storing dispatching method and system of algorithm based on Virtual Fuzzy |
| WO2020214381A1 (en) * | 2019-04-16 | 2020-10-22 | Raytheon Company | Integrated thermal energy transport and storage structures |
| CN112265653A (en) * | 2020-09-30 | 2021-01-26 | 北京空间飞行器总体设计部 | Spacecraft autonomous thermal control method based on power balance |
| CN112849437A (en) * | 2021-01-11 | 2021-05-28 | 中国科学院微小卫星创新研究院 | On-orbit thermal control system and thermal control method for spacecraft |
Non-Patent Citations (2)
| Title |
|---|
| 阎德劲.相变合金温控组件的制备及循环性能研究.《新技术新工艺》.2019,第32-37页. * |
| 陈文博.级联多电平变换器的主动温度控制及故障诊断策略研究.《博士论文全文数据库工程科技Ⅱ辑》.2021,全文. * |
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