CN112937926B - Sweating cooling method and device - Google Patents
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- 238000001816 cooling Methods 0.000 title claims abstract description 108
- 230000035900 sweating Effects 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 claims description 26
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- 230000008859 change Effects 0.000 claims description 16
- 238000013461 design Methods 0.000 claims description 9
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- 238000012986 modification Methods 0.000 description 3
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- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
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- 238000004886 process control Methods 0.000 description 1
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- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/52—Protection, safety or emergency devices; Survival aids
- B64G1/58—Thermal protection, e.g. heat shields
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Abstract
The application discloses a sweating cooling method and device, which are used for realizing efficient utilization of a sweating cooling medium and accurate control of end temperature. The sweating cooling method disclosed by the application comprises the following steps: determining a sweating cooling control model; determining parameters of the control model; determining a sweating cooling control law according to the parameters and the control model; and cooling the part to be cooled according to the sweating cooling control law. The application also provides a sweating cooling device.
Description
Technical Field
The application relates to the field of aircraft thermal protection, in particular to a sweating cooling method and device.
Background
Future near space vehicles are aiming at long-time, long-distance and reusable developments, which present new challenges for thermal protection design of critical components of the spacecraft for long-term operation in high-heat-flow environments. Advanced heat protection systems available for near space vehicles are becoming a challenge in developing hypersonic vehicles that can react quickly and fly for long periods of time at high mach numbers. The sweating cooling technology is one of the active heat protection technologies of hypersonic aircrafts.
At present, the sweating cooling still adopts an open loop control mode, namely under a certain opening condition, the sweating end head is opened to work until the cooling medium is exhausted or the task is completed. However, for longer and longer-distance flight conditions, the simple open-loop control mode is difficult to meet the efficient utilization of the limited cooling medium, so that more cooling medium is wasted in the front flight stage, and no medium is available in the rear flight stage.
Disclosure of Invention
Aiming at the technical problems, the embodiment of the application provides a sweating cooling method, a device and a storage medium, which are used for realizing efficient utilization of the sweating cooling medium and accurate control of the temperature of an end head and improving the utilization rate of the cooling medium.
In a first aspect, an embodiment of the present application provides a method for cooling sweat, including:
determining a sweating cooling control model;
determining parameters of the control model;
determining a sweating cooling control law according to the parameters and the control model;
and cooling the part to be cooled according to the sweating cooling control law.
Preferably, the determining the sweating cooling control model includes:
the sweating cooling control model is as follows:
where s is time, C(s) is temperature, U(s) is solenoid valve opening or flow, K is open-loop amplification factor, τ is time delay coefficient, and T is time constant.
Preferably, the determining the parameters of the control model includes:
determining parameters of a control model according to test data of the sweating cooling component under the high heat flow wind tunnel;
the parameters include an open loop amplification factor K, a time delay coefficient tau and a time constant T.
Further, the test data includes:
the temperature for starting the test is C0, the opening degree of the electromagnetic valve is u, and the opening time is t 0 Synchronously recording a temperature change curve, and ending the test when the temperature reaches a steady state C1;
the parameters are determined by the following formula:
T＝t 2 -t 1 ,
τ＝t 1 -t 0 ,
wherein t is 1 Is the time t corresponding to the intersection point of the tangent line at the inflection point of the temperature decrease curve and the straight line with the temperature of C0 2 Is the tangent line at the inflection point of the temperature drop curveThe time corresponding to the intersection of the straight lines at the temperature C1.
Preferably, said determining a sweating cooling control law based on said parameters and said control model comprises:
the sweating cooling control law is as follows:
u(k)＝u(k-1)+Δu(k)，
where k is the time variable, u (k-1) is the controller output at time k-1, and Δu (k) is the amount of change in the controller output at time k relative to the controller output at time k-1.
Further, the amount of change Deltau (k) of the controller output at time k relative to the controller output at time k-1 is determined by the following equation:
Δu(k)＝K P [e c (k)-e c (k-1)]+K I e c (k)/f+K D f[e c (k)-2e c (k-1)+e c (k-2)]，
wherein,,
e c (k)＝r(k)-c(k)-y τ (k)，
y τ (k)＝m(k)-m(k-N)，
r (K) is a temperature design value, c (K) is a temperature actual value, K p Is a proportional control parameter, K I Is an integral control parameter, K D Is a differential control parameter and f is the sampling frequency.
Further, according to the sweating cooling control law, the cooling the part to be cooled comprises:
discretizing the sweating cooling control law u (k), and controlling an electromagnetic valve of an actuating mechanism of the sweating cooling component to cool the component to be cooled according to the discretized result.
Further, the discretizing the sweating cooling control law u (k) includes:
establishing a trapezoid membership function;
and calculating a membership function value of the u (k) by using the trapezoid membership function.
The control model is firstly determined, then the parameters of the model are determined according to experimental data, the sweating cooling control law is determined, discretization processing is carried out on the output of the sweating cooling control law, and the electromagnetic valve of the cooling executing mechanism is controlled according to the discretization processing result, so that the efficient utilization of the sweating cooling medium and the accurate control of the end temperature are realized, and the cooling efficiency and the utilization rate of the cooling medium are improved.
In a second aspect, embodiments of the present application also provide an sweating cooling device, comprising:
a control model determination module for determining a sweating cooling control model and parameters of the control model;
the control law determining module is used for determining a sweating cooling control law according to the parameters and the control model;
and the cooling execution module is used for cooling the part to be cooled according to the sweating cooling control law.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art sweating cooling structure;
FIG. 2 is a schematic diagram of an sweating cooling control system provided in an embodiment of the present application;
FIG. 3 is a schematic flow chart of a method for cooling sweat according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an sweating cooling control model provided in an embodiment of the present application;
FIG. 5 is a schematic diagram of a method for determining model parameters according to experimental data according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a logic distribution of cooling valve control data according to an embodiment of the present application;
fig. 7 is a schematic diagram of an sweating cooling device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Some words appearing hereinafter are explained:
1. in the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
2. The term "plurality" in the embodiments of the present application means two or more, and other adjectives are similar thereto.
The principle of sweat cooling is shown in fig. 1, which is also called osmotic cooling, which is a limiting form of film cooling. The sweating cooling means that a gaseous or liquid cooling medium reaches the surface of the hot end through a porous medium structure to form a continuous and stable fluid adhesion surface with good heat insulation performance, namely a cooling medium film, which separates the heated structure from the heat flow, and meanwhile, the flow of the cooling medium in the laminate structure or the porous medium layer enhances heat exchange, so that a cooling effect is generated.
According to the sweating cooling method, a control system principle is shown in fig. 2, the control system consists of a controller, a sensor, an object and an actuator, wherein t represents time, r (t) represents a temperature set value, p (t) represents time-varying unmodeled external interference, and c (t) is the temperature of the cooled object.
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It should be noted that, the display sequence of the embodiments of the present application only represents the sequence of the embodiments, and does not represent the advantages or disadvantages of the technical solutions provided by the embodiments.
Example 1
Referring to fig. 3, a schematic diagram of a method for cooling sweat is provided in an embodiment of the present application, as shown in fig. 3, and the method includes steps S301 to S304:
s301, determining a sweating cooling control model;
s302, determining parameters of the control model;
s303, determining a sweating cooling control law according to the parameters and the control model;
and S304, cooling the part to be cooled according to the sweating cooling control law.
By the method of the embodiment, firstly, a model for controlling sweating and cooling is determined, then, parameters of the model are determined, finally, a control law is determined according to the model and the parameters, and the sweating and cooling process is controlled according to the control law, so that the efficiency of sweating and cooling is improved.
The sweating cooling component is used as a process control object model, and has time delay from the liquid injection and flow process, from the opening of the electromagnetic valve to the flow of the low-temperature liquid to the end head; the process of heating the cryogenic liquid to vaporization temperature and further to the high temperature gas under the external heat flow heating has a time delay characteristic. Therefore, the frequency domain transfer function (object model) is structured as a first-order inertial element with a pure time delay, that is, as a preferred example, in the above step S301, the sweating cooling control model may be:
wherein C is the actual temperature, U is the opening or flow of the electromagnetic valve, and the frequency domain transfer function describes the transfer characteristic from U to T. K is open-loop amplification factor, and describes temperature change caused by a certain electromagnetic valve opening under a steady-state condition; τ is a time delay coefficient, representing the time delay from the opening time of the electromagnetic valve to the beginning of the change of temperature; t is the time constant of the temperature dynamic change process under a certain opening degree.
As a preferred example, in the above step S302, the method for determining the parameters of the control model may be to perform a cooling test under a high heat flow wind tunnel on the object to be cooled to obtain test data, and then obtain three parameters τ, T and K of the model of formula (1) according to an engineering drawing method. As a preferable example, as shown in fig. 5, the current temperature is C0, and the solenoid valve (opening degree is u) is opened at time t 0 And (3) synchronously recording a temperature change curve at the moment, and ending a group of tests when the temperature reaches a steady state C1. Then engineering drawing is carried out, and three parameters tau, T and K can be determined through the following formulas:
T＝t 2 -t 1 ,
τ＝t 1 -t 0 ,
wherein t is 1 Is the time t corresponding to the intersection point of the tangent line at the inflection point of the temperature decrease curve and the straight line with the temperature of C0 2 Is the time corresponding to the intersection of the tangent line at the inflection point of the temperature decrease curve and the straight line at the temperature C1.
Examples of the above test methods are given below:
(1) Test data of a key sweating cooling part under a high heat flow wind tunnel are obtained, and measurement sensitivity of a temperature sensor in a temperature control key area is ensured, for example: the temperature is stabilized at 800 ℃, the temperature is required to be changed within the range of 700-900 ℃, and the temperature sensor feeds back the temperature change;
(2) The frequency of the test data acquisition signal should be not lower than 10Hz;
(3) Control the time-synchronicity deviation of the test signal, for example: the time mark deviation between the temperature measurement data and the solenoid valve switch instruction is not more than 5ms;
(4) After each group of tests enter a heat flow steady state, the electromagnetic valve is opened again, the state is maintained until the temperature signal enters the steady state, one group of tests can not be ended, and corresponding test heat flow condition parameters are recorded.
(5) Based on the temperature change and the heat flow conditions obtained by the above test, a graph (shown in fig. 5) is drawn, and three parameters τ, T and K are obtained by engineering drawing.
In the embodiment of the present invention, as a preferred example, in S303, the sweating and cooling control law is determined according to the parameters and the control model, that is, u (t) in fig. 2 and 4 is solved, that is:
the sweating cooling control law is as follows:
u(k)＝u(k-1)+Δu(k)，
where k is the time variable, u (k-1) is the controller output at time k-1, and Δu (k) is the amount of change in the controller output at time k relative to the controller output at time k-1.
Order the
The transfer function (i.e., equation (1)) can be converted to G(s) =g p (s)e -τs And the time delay link in the closed loop is shifted out, so that the design of a control law is facilitated. The control system is equivalent to a control object without time delay
Design controller D(s), its delay element e -τs Has no effect on closed loop stability, and only shows time delay at output.
Let the sampling frequency be f
N=τf formula (2)
Transfer function G p (s) Z-transformation to obtain a transfer function G in the Z-domain p (z) is:
e c (k)＝r(k)-c(k)-y τ (k) Formula (4)
y τ (k) =m (k) -m (k-N) formula (5)
Wherein m (k) is:
Δu(k)＝K P [e c (k)-e c (k-1)]+K I e c (k)/f+K D f[e c (k)-2e c (k-1)+e c (k-2)]formula (7)
u (k) =u (k-1) +Δu (k) formula (8)
r (K) is a temperature design value, c (K) is a temperature actual value, K p Is a proportional control parameter, K I Is an integral control parameter, K D Is a differential control parameter and f is the sampling frequency.
The PID control parameter (i.e., the proportional control parameter K p Integral control parameter K I And differential control parameter K D ) The method for obtaining the parameters may be a Bode diagram design method, a pole allocation method, or an online trial-and-error method, which are not described herein.
The sweating cooling control law output value u (k) is a continuous variable, and when the actuator (solenoid valve) of the sweating cooling unit is composed of n independent solenoid valves with different flow rates, discrete control amounts are required to control the opening or closing of the solenoid valves. Therefore, in step S304, the cooling of the component to be cooled is performed according to the sweating cooling control law, and the cooling of u (k) is required to be performed by n-! +1 gear discretization (i.e., n independent solenoid valves of different flow rates, n|+1 gear discrete flow control outputs that can be generated by a combination). As shown in fig. 6, for example, 2 independent different flow solenoid valves, a schematic diagram of 4 discrete flow control outputs can be produced in a combined manner, i.e., there are three combinations: the 2 electromagnetic valves are all closed, the electromagnetic valve 1 is opened, the electromagnetic valve 2 is closed, the electromagnetic valve 1 is closed, the electromagnetic valve 2 is opened, and the electromagnetic valves 1 and 2 are both opened.
As a preferred example, the embodiment of the present invention completes the discretization processing of u (k) by:
step 1: establishing a trapezoid membership function;
step 2: calculating a membership function value of u (k) by using the membership function;
step 3: and decoding an electromagnetic valve switch instruction according to the maximum membership function value.
That is, discretization processing is performed on the sweating cooling control law u (k), and the electromagnetic valve of the actuator for controlling the sweating cooling member cools the member to be cooled according to the result of the discretization processing.
As a preferred example, n ≡ after u (k) discretization! The +1 values, combined with the switching of the n solenoid valves, can be mapped using fuzzy sets. For example, the discretized value of u (k) is represented by n binary bits, the solenoid valves are numbered, each bit of the discretized value of u (k) corresponds to one solenoid valve control switch, i.e., the 0 th bit of the discretized value of u (k) corresponds to the 0 th solenoid valve, the 1 st bit corresponds to the 1 st solenoid valve, the 2 nd bit corresponds to the 2 nd solenoid valve, and so on, the n-1 th bit corresponds to the n-1 st solenoid valve. For each bit in the discretized value of u (k), when the value of the bit is 0, the corresponding solenoid valve is indicated to be closed, and when the value of the bit is 1, the corresponding solenoid valve is indicated to be opened.
For example, there are 2 solenoid actuators, where the value of u (k) is represented in 2-bit binary, the first bit being the control bit for solenoid valve 1 and the second bit being the control bit for solenoid valve 2. When the discretized value of u (k) is 00, both solenoid valves are closed; when the discretized value of u (k) is 01, the solenoid valve 1 is opened and the solenoid valve 2 is closed; when the discretized value of u (k) is 10, it indicates that the solenoid valve 1 is closed and the solenoid valve 2 is opened; when the discretized value of u (k) is 11, it means that both solenoid valve 1 and solenoid valve 2 are open.
By using the sweating cooling method provided by the embodiment of the invention, firstly, a control object model of a sweating end is determined, and parameters of the model are obtained based on wind tunnel experimental data. Then, a feedback control rate design method of a temperature change rate is introduced based on a control model of the identified sweating end, and aiming at discrete nonlinear characteristics of an executing mechanism, a switching strategy is intelligently distributed based on fuzzy logic, so that the end low-temperature protection under a long-time high-heat-flow environment is realized, and the efficiency of sweating and cooling is improved.
Example two
Based on the same inventive concept, an embodiment of the present invention further provides a sweating cooling device, as shown in fig. 7, including:
a control model determination module 701 for determining a sweating cooling control model and parameters of the control model;
a control law determination module 702 for determining a sweating cooling control law from the parameters and the control model;
and the cooling execution module 703 is used for cooling the component to be cooled according to the sweating cooling control law.
As a preferred example, the control model determination module 701 is configured to determine the sweating cooling control model according to the following formula:
where s is time, C(s) is temperature, U(s) is solenoid valve opening or flow, K is open-loop amplification factor, τ is time delay coefficient, and T is time constant.
As a preferred example, the control model determination module 701 is configured to determine parameters of the control model according to the following method:
determining parameters of a control model according to test data of the sweating cooling component under the high heat flow wind tunnel;
the parameters include an open loop amplification factor K, a time delay coefficient tau and a time constant T.
The test data includes:
the temperature for starting the test is C0, the opening degree of the electromagnetic valve is u, and the opening time is t 0 Synchronously recording a temperature change curve, and ending the test when the temperature reaches a steady state C1;
the parameters are determined by the following formula:
T＝t 2 -t 1 ,
τ＝t 1 -t 0 ,
wherein t is 1 Is the time t corresponding to the intersection point of the tangent line at the inflection point of the temperature decrease curve and the straight line with the temperature of C0 2 Is the time corresponding to the intersection of the tangent line at the inflection point of the temperature decrease curve and the straight line at the temperature C1.
As a preferred example, the control law determination module 702 is configured to determine the control law according to the following formula:
u(k)＝u(k-1)+Δu(k)，
where k is the time variable, u (k-1) is the controller output at time k-1, and Δu (k) is the amount of change in the controller output at time k relative to the controller output at time k-1.
The variation Deltau (k) of the controller output at time k relative to the controller output at time k-1 is determined by the following equation:
Δu(k)＝K P [e c (k)-e c (k-1)]+K I e c (k)/f+K D f[e c (k)-2e c (k-1)+e c (k-2)]，
wherein,,
e c (k)＝r(k)-c(k)-y τ (k)，
y τ (k)＝m(k)-m(k-N)，
r (K) is a temperature design value, c (K) is a temperature actual value, K p Is a proportional control parameter, K I Is an integral control parameter, K D Is a differential control parameter and f is the sampling frequency.
As a preferred example, the cooling execution module 703 is configured to:
discretizing the sweating cooling control law u (k), and controlling an electromagnetic valve of an actuating mechanism of the sweating cooling component to cool the component to be cooled according to the discretized result.
The discretizing the sweating cooling control law u (k) includes:
establishing a trapezoid membership function;
and calculating a membership function value of the u (k) by using the trapezoid membership function.
It should be noted that, the control model determining module 701 provided in the present embodiment can implement all the functions included in steps S301 and S302 in the first embodiment, solve the same technical problem, achieve the same technical effect, and are not described herein again;
accordingly, the control law determining module 702 provided in the present embodiment can implement all the functions included in step S303 in the first embodiment, solve the same technical problem, achieve the same technical effect, and are not described herein again;
accordingly, the cooling execution module 703 provided in the present embodiment can implement all the functions included in step S304 in the first embodiment, solve the same technical problem, achieve the same technical effect, and are not described herein again;
it should be noted that, the device provided in the second embodiment and the method provided in the first embodiment belong to the same inventive concept, solve the same technical problem, achieve the same technical effect, and the device provided in the second embodiment can implement all the methods in the first embodiment, and the same points are not repeated.
It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (4)
1. A method of sweating cooling comprising:
determining a sweating cooling control model;
determining parameters of the control model;
determining a sweating cooling control law according to the parameters and the control model;
cooling the part to be cooled according to the sweating cooling control law;
the determining a sweating cooling control model includes:
the sweating cooling control model is as follows:
wherein s is time, C(s) is temperature, U(s) is opening or flow of an electromagnetic valve, K is open-loop amplification factor, tau is a time delay coefficient, and T is a time constant;
the determining parameters of the control model includes:
determining parameters of a control model according to test data of the sweating cooling component under the high heat flow wind tunnel;
the parameters comprise open loop amplification factor K, time delay coefficient tau and time constant T;
the test data includes:
the temperature for starting the test is C0, the opening degree of the electromagnetic valve is u, and the opening time is t 0 Synchronously recording a temperature change curve, and ending the test when the temperature reaches a steady state C1;
the parameters are determined by the following formula:
T＝t 2 -t 1 ,
τ＝t 1 -t 0 ,
wherein t is 1 Is the time t corresponding to the intersection point of the tangent line at the inflection point of the temperature decrease curve and the straight line with the temperature of C0 2 Is the time corresponding to the intersection of the tangent line at the inflection point of the temperature falling curve and the straight line at the temperature C1;
said determining a control law of sweating cooling according to said parameters and said control model comprising:
the sweating cooling control law is as follows:
u(k)＝u(k-1)+△u(k)，
where k is the time variable, u (k-1) is the controller output at time k-1, deltau (k) is the amount of change in the controller output at time k relative to the controller output at time k-1;
said cooling the component to be cooled according to said sweating cooling control law comprising:
discretizing the sweating cooling control law u (k), and controlling an electromagnetic valve of an actuating mechanism of the sweating cooling component to cool the component to be cooled according to the discretized result.
2. The method of claim 1, wherein the amount of change Δu (k) of the controller output at time k relative to the controller output at time k-1 is determined by the following equation:
△u(k)＝K P [e c (k)-e c (k-1)]+K I e c (k)/f+K D f[e c (k)-2e c (k-1)+e c (k-2)]，
wherein,,
e c (k)＝r(k)-c(k)-y τ (k)，
y τ (k)＝m(k)-m(k-N)，
r (K) is a temperature design value, c (K) is a temperature feedback value, K p Is a proportional control parameter, K I Is an integral control parameter, K D Is a differential control parameter, f is a sampling frequency, G p (Z) is a transfer function of the Z domain.
3. The method of claim 1, wherein discretizing the sweating cooling control law u (k) comprises:
establishing a trapezoid membership function;
and calculating a membership function value of the u (k) by using the trapezoid membership function.
4. An sweating cooling device, comprising:
a control model determination module for determining a sweating cooling control model and parameters of the control model;
the control law determining module is used for determining a sweating cooling control law according to the parameters and the control model;
the cooling execution module is used for cooling the part to be cooled according to the sweating cooling control law;
the sweat cooling means for performing the method according to one of claims 1 to 3.
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