Blackbody double-closed-loop temperature control method, device and equipment and readable storage medium

Abstract

The invention relates to a black body double-closed-loop temperature control method, device and equipment and a readable storage medium. A blackbody temperature control system mathematical model is constructed in response to modeling operation of a user, a transfer function of a blackbody temperature control system is determined based on the blackbody temperature control system mathematical model, a double-closed-loop temperature control system is constructed based on the transfer function of the blackbody temperature control system, and double closed loops comprise an inner loop and an outer loop. And the temperature of the black body is regulated and controlled based on a double-closed-loop temperature control system. Compared with the prior art, the embodiment of the invention has the advantages that the blackbody temperature control system mathematical model is constructed, the transfer function of the blackbody temperature control system is determined, the double-closed-loop temperature control system is constructed based on the transfer function of the blackbody temperature control system, the temperature of the blackbody is regulated and controlled based on the double-closed-loop temperature control system, and double-closed-loop temperature control is adopted; the response speed and the steady-state precision of the blackbody temperature control system can be improved, and the inhibition capability of the system on disturbance such as environment temperature change and heater characteristic change can be enhanced.

Description

Technical Field

[0001] The present disclosure relates to the field of temperature control technology, and in particular to a blackbody double closed-loop temperature control method, device, equipment and readable storage medium. Background Art

[0002] As an idealized physical model, blackbody has unique thermal radiation characteristics, that is, it can completely absorb all incident electromagnetic radiation without reflection or transmission. Its own radiation characteristics are only related to temperature, and have nothing to do with the material properties of the blackbody. This unique property makes blackbody play an important role in many scientific research and industrial applications. In the fields of optics, precision measurement, material science research, etc., blackbody is widely used in temperature standards, thermal radiation testing, and thermal imaging.

[0003] In temperature standards and thermal radiation tests, accurate temperature control of black bodies is crucial. The stability and accuracy of temperature directly affect the reliability of test results. Therefore, researching and developing efficient temperature control methods is essential to ensure the performance of black bodies in various application fields.

[0004] In the related art, traditional temperature control methods generally adopt a single closed-loop control strategy, that is, adjusting specific parameters through a controller to achieve real-time control of temperature. Although this control strategy can basically meet the requirements of temperature control in most cases, its inherent limitations become particularly prominent in specific applications. Especially in the field of blackbody temperature control, there are often many unpredictable and difficult to compensate disturbance factors, such as ambient temperature fluctuations, equipment aging, and unstable power supply voltage, which will have a negative impact on the performance of the temperature control system. These disturbances may cause overshoot and steady-state errors in the control system, thereby affecting the temperature stability and thermal radiation performance of the blackbody. In addition, when dealing with complex external environments and internal equipment disturbances, the control effect of traditional temperature control methods often fails to meet expectations. Summary of the invention

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a blackbody double closed-loop temperature control method, device, equipment and readable storage medium.

[0006] In a first aspect, an embodiment of the present disclosure provides a blackbody double closed-loop temperature control method, the method comprising:

[0007] In response to a modeling operation of a user, a mathematical model of a blackbody temperature control system is constructed, and a transfer function of the blackbody temperature control system is determined based on the mathematical model of the blackbody temperature control system;

[0008] Constructing a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop;

[0009] The temperature of the black body is regulated based on the double closed-loop temperature control system.

[0010] In some embodiments, after constructing a dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, the method further includes:

[0011] The stability of the double closed-loop temperature control system is tested by the root locus method.

[0012] In some embodiments, the transfer function of the blackbody temperature control system is expressed as follows:

[0013]

[0014] Among them, G() represents the transfer function of the blackbody temperature control system, K represents the amplification factor, T represents the time constant, τ represents the lag time, s represents the complex variable in the Laplace transform, and e is a constant.

[0015] In some embodiments, the dual closed-loop temperature control system is constructed based on the transfer function of the blackbody temperature control system, including:

[0016] Set the inner loop to voltage loop and the outer loop to temperature loop;

[0017] Based on the transfer function of the blackbody temperature control system, the controller of the inner loop is set to a voltage controller, and the controller of the outer loop is set to an active disturbance rejection controller;

[0018] Adjust the parameters of the voltage controller and the parameters of the active disturbance rejection controller;

[0019] The inner loop includes a voltage controller, a semiconductor field effect transistor, a voltage follower and an inner loop analog-to-digital converter; the outer loop includes an anti-disturbance controller, a voltage loop, a temperature control device, a temperature sensor and an outer loop analog-to-digital converter.

[0020] In some embodiments, the temperature of the black body is regulated based on the dual closed-loop temperature control system, including:

[0021] The temperature of the black body is regulated by a voltage controller and / or an auto-disturbance rejection controller.

[0022] In some embodiments, the temperature of the black body is regulated by a voltage controller and / or an anti-disturbance control controller, including:

[0023] Sampling the voltage across the temperature control device through an inner loop analog-to-digital converter, obtaining a voltage sampling value, calculating the difference between the voltage sampling value and the voltage target value, performing compensation calculation based on the difference through a voltage controller, and adjusting the duty cycle and frequency of the control signal to regulate the voltage across the temperature control device; and / or

[0024] The actual temperature value of the black body collected by the temperature sensor is converted into a voltage value, sampled by an outer loop analog-to-digital converter, the actual temperature value corresponding to the sampled voltage value is determined, the difference between the actual temperature value and the temperature target value is calculated, and compensation calculation is performed based on the difference by the self-disturbance rejection controller to obtain the control voltage value and the temperature control type, and the control voltage value and the temperature control type at both ends of the temperature control device are output through the voltage loop to control the temperature control device to heat or cool the black body.

[0025] In some embodiments, the voltage controller is a proportional-integral controller, and the transfer function of the voltage controller is expressed as follows:

[0026]

[0027] Among them, G i () represents the transfer function of the voltage controller, K p represents the voltage controller proportionality factor, τ i is the integral time constant of the voltage controller, and s represents the complex variable in the Laplace transform.

[0028] In a second aspect, an embodiment of the present disclosure provides a blackbody double closed-loop temperature control device, the device comprising:

[0029] A construction unit, configured to construct a mathematical model of a blackbody temperature control system in response to a modeling operation of a user, and determine a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system;

[0030] A construction unit, used to construct a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop;

[0031] A control unit is used to control the temperature of the black body based on the double closed-loop temperature control system.

[0032] In a third aspect, an embodiment of the present disclosure provides an electronic device, including:

[0033] Memory;

[0034] Processor; and

[0035] Computer programs;

[0036] The computer program is stored in the memory and is configured to be executed by the processor to implement the method as described in the first aspect.

[0037] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program is executed by a processor to implement the method as described in the first aspect.

[0038] In a fifth aspect, an embodiment of the present disclosure further provides a computer program product, which includes a computer program or instructions, and when the computer program or instructions are executed by a processor, the method described in the first aspect is implemented.

[0039] The blackbody dual closed-loop temperature control method, device, equipment and readable storage medium provided in the embodiments of the present disclosure construct a mathematical model of a blackbody temperature control system in response to a modeling operation of a user, determine a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system, and construct a dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the dual closed-loop includes an inner loop and an outer loop, and the temperature of the blackbody is regulated based on the dual closed-loop temperature control system. Compared with the prior art, the embodiments of the present disclosure construct a mathematical model of a blackbody temperature control system in response to a modeling operation of a user, determine a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system, and construct a dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the dual closed-loop includes an inner loop and an outer loop, and the temperature of the blackbody is regulated based on the dual closed-loop temperature control system. The dual closed-loop temperature control can improve the response speed and steady-state accuracy of the blackbody temperature control system by adopting the dual closed-loop temperature control, and at the same time enhance the system's ability to suppress disturbances such as changes in ambient temperature and changes in heater characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0042] Figure 1 A flow chart of a blackbody double closed-loop temperature control method provided in an embodiment of the present disclosure;

[0043] Figure 2 A schematic diagram of the dual closed-loop temperature control system architecture provided by an embodiment of the present disclosure;

[0044] Figure 3 A flow chart of a blackbody double closed-loop temperature control method provided by another embodiment of the present disclosure;

[0045] Figure 4 A schematic diagram of the structure of a blackbody double closed-loop temperature control device provided in an embodiment of the present disclosure;

[0046] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0047] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0049] In the related art, traditional temperature control methods generally adopt a single closed-loop control strategy, that is, a controller is used to adjust specific parameters to achieve real-time control of temperature. Although this control strategy can basically meet the requirements of temperature control in most cases, its inherent limitations become particularly prominent in specific applications. Especially in the field of blackbody temperature control, there are often many unpredictable and difficult to compensate disturbance factors, such as ambient temperature fluctuations, equipment aging, and unstable power supply voltage, which will have a negative impact on the performance of the temperature control system. These disturbances may cause overshoot and steady-state errors in the control system, thereby affecting the temperature stability and thermal radiation performance of the blackbody. In addition, when dealing with complex external environments and internal equipment disturbances, the control effect of traditional temperature control methods often fails to meet expectations. In response to this problem, the embodiment of the present disclosure provides a blackbody dual closed-loop temperature control method, which is described below in conjunction with specific embodiments.

[0050] Figure 1 A flow chart of a blackbody dual closed-loop temperature control method provided in an embodiment of the present disclosure. The executor of the method is an electronic device, which may be a tablet computer, a laptop computer, or a personal computer or other device capable of temperature control. The method can be applied to the scenario of regulating the temperature of a blackbody, and can effectively regulate the fluctuations caused by disturbances, thereby significantly reducing overshoot and steady-state errors, and improving the dynamic performance and steady-state accuracy of the system. It is understandable that the blackbody dual closed-loop temperature control method provided in an embodiment of the present disclosure can also be applied in other scenarios.

[0051] Below Figure 1 The blackbody double closed-loop temperature control method shown in the figure is introduced, and the specific steps of the method are as follows:

[0052] S101. In response to a modeling operation of a user, a mathematical model of a blackbody temperature control system is constructed, and a transfer function of the blackbody temperature control system is determined based on the mathematical model of the blackbody temperature control system.

[0053] In this step, the user will perform a modeling operation, and the electronic device will respond to the user's modeling operation to construct a mathematical model of the blackbody temperature control system, and further determine the transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system. Specifically, the blackbody temperature control mathematical model can be regarded as a first-order inertial hysteresis system, and the transfer function of the blackbody temperature control system can be determined using the step response identification method.

[0054] In some embodiments, the transfer function of the blackbody temperature control system is expressed as follows:

[0055]

[0056] Among them, G() represents the transfer function of the blackbody temperature control system, K represents the amplification factor, T represents the time constant, τ represents the lag time, s represents the complex variable in the Laplace transform, and e is a constant.

[0057] Optionally, the values ​​of various parameters are related to factors such as blackbody specific heat capacity, blackbody mass and ambient temperature.

[0058] S102: construct a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop.

[0059] In this step, after obtaining the transfer function of the blackbody temperature control system, the electronic device can construct a double closed-loop temperature control system according to the transfer function of the blackbody temperature control system, and the double closed-loop includes an inner loop and an outer loop. Optionally, the inner loop is a voltage loop for regulating voltage fluctuations; the outer loop is a temperature loop for regulating temperature fluctuations.

[0060] S103, regulating the temperature of the black body based on the dual closed-loop temperature control system.

[0061] In this step, the electronic device can regulate the temperature of the black body according to the dual closed-loop temperature control system, thereby improving the accuracy and anti-interference ability of the black body temperature control, and ensuring that the black body can still maintain excellent thermal radiation characteristics under changing environmental conditions.

[0062] The embodiment of the present disclosure constructs a mathematical model of a blackbody temperature control system in response to a user's modeling operation, determines a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system, and constructs a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop, and the temperature of the blackbody is regulated based on the double closed-loop temperature control system. Compared with the prior art, the embodiment of the present disclosure constructs a mathematical model of a blackbody temperature control system in response to a user's modeling operation, determines a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system, and constructs a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop, and the temperature of the blackbody is regulated based on the double closed-loop temperature control system. The double closed-loop temperature control can improve the response speed and steady-state accuracy of the blackbody temperature control system, and enhance the system's ability to suppress disturbances such as changes in ambient temperature and changes in heater characteristics.

[0063] Figure 3 A flow chart of a blackbody double closed-loop temperature control method provided by another embodiment of the present disclosure is shown in FIG. Figure 3 As shown, the method includes the following steps:

[0064] S201. In response to a modeling operation of a user, a mathematical model of a blackbody temperature control system is constructed, and a transfer function of the blackbody temperature control system is determined based on the mathematical model of the blackbody temperature control system.

[0065] Specifically, the implementation process and principle of S301 and S101 are the same, and will not be repeated here.

[0066] S202, setting the inner loop as a voltage loop, and setting the outer loop as a temperature loop.

[0067] In this step, the inner loop can be set as a voltage loop, and the outer loop can be set as a temperature loop. The voltage loop is used to regulate voltage fluctuations; the temperature loop is used to regulate temperature fluctuations.

[0068] S203 . Based on the transfer function of the blackbody temperature control system, the controller of the inner loop is set to a voltage controller, and the controller of the outer loop is set to an active disturbance rejection controller.

[0069] In this step, according to the transfer function of the blackbody temperature control system, the controller of the inner loop and the controller of the outer loop are determined respectively, and the controller of the inner loop is set as a voltage controller, and the controller of the outer loop is set as an auto-disturbance rejection controller. The outer loop uses an auto-disturbance rejection controller to achieve overall temperature control, while the inner loop uses a voltage controller to accurately adjust the voltage across the temperature control device (i.e., the cooling and heating) to finely adjust the cooling and heating power.

[0070] The inner loop includes a voltage controller, a semiconductor field effect transistor (MOSFET), a voltage follower and an inner loop analog-to-digital converter; the outer loop includes an anti-disturbance controller, a voltage loop, a temperature control device, a temperature sensor and an outer loop analog-to-digital converter.

[0071] In some embodiments, the active disturbance rejection controller includes a tracking differentiator, an extended state observer, and a nonlinear error feedback control law, without specific limitation.

[0072] In some embodiments, the voltage controller is a proportional-integral controller, and the transfer function of the voltage controller is expressed as follows:

[0073]

[0074] Among them, G i () represents the transfer function of the voltage controller, K p represents the voltage controller proportionality factor, τ i is the integral time constant of the voltage controller, and s represents the complex variable in the Laplace transform.

[0075] Optionally, the coefficient of the voltage controller can be adjusted according to indicators such as overshoot, steady-state error, rise time, and adjustment time of the voltage controller.

[0076] S204: Adjust the parameters of the voltage controller and the parameters of the active disturbance rejection controller.

[0077] In this step, on the one hand, the parameters of the voltage controller are adjusted. For example, the black body temperature is controlled at 60°C, and the parameters of the voltage controller are adjusted using the critical proportionality method. The specific adjustment process of the voltage controller is as follows:

[0078] Step 1): Set the integral coefficient (K i ) is set to zero, leaving only the proportional coefficient (K p ).

[0079] Step 2): From a smaller K p value, and gradually increase K p , and observe the output voltage of the temperature control devices, namely the cooling and heater.

[0080] Step 3): When the system output begins to oscillate with equal amplitude, stop increasing K p . Record the K at this time p The critical ratio (K pc =1), and measure the oscillation period (T c =20s).

[0081] Step 4): According to K pc and T c, use the following empirical formula to calculate the initial value K of the voltage controller parameter p =0.45, K i =0.01215:

[0082]

[0083] Step 5): K p , K i The parameters can be used as initial values ​​and then fine-tuned according to actual conditions to obtain the best temperature control effect.

[0084] On the other hand, the parameters of the ADRC are adjusted. For example, the temperature of the black body is controlled at 60°C and heated for 60 minutes to adjust the parameters of the ADRC. Specifically, it includes TD parameters (fast tracking time constant r, used to adjust the speed of temperature change), ESO parameters (observer bandwidth ω, used to adjust the system response speed and noise) and NLSEF parameters (nonlinear feedback gain β1, β2, β3, used to adjust the system dynamic characteristics and control accuracy requirements). It is necessary to use the empirical formula method according to the dynamic characteristics of the black body system to obtain ω = 0.05, r = 0.0167, β1 = 0.0333, β2 = 0.000278, β3 = 4.63×10 -6 The formula is as follows:

[0085] ω=3 / t_s, where t_s is the desired adjustment time, which can be set to 60s;

[0086] r = ω / 3;

[0087] β1=2r, β2=r^2, β3=r^3.

[0088] S205, testing the stability of the dual closed-loop temperature control system by using a root locus method.

[0089] In this step, the electronic device may test the stability of the dual closed-loop temperature control system by using a root locus method, and when the test passes, S206 is executed.

[0090] S206: regulating the temperature of the black body by means of a voltage controller and / or an auto-disturbance rejection controller.

[0091] In this step, when the test is passed, the electronic device will adjust the temperature of the black body through the voltage controller and / or the anti-disturbance controller. Through the voltage controller and / or the anti-disturbance controller in the double closed-loop temperature control system, the system disturbance can be monitored and compensated in real time, thereby significantly reducing overshoot and steady-state error, and improving the dynamic performance and steady-state accuracy of the system.

[0092] In some embodiments, S206 may include but is not limited to S2061 and S2062:

[0093] S2061, sampling the voltage at both ends of the temperature control device through an inner loop analog-to-digital converter, obtaining a voltage sampling value, calculating a difference between the voltage sampling value and a voltage target value, performing compensation calculation based on the difference through a voltage controller, and adjusting a duty cycle and a frequency of a control signal to regulate the voltage at both ends of the temperature control device; and / or

[0094] In this embodiment, Figure 2 As shown in the figure, the inner loop is a voltage loop. After the voltage across the MOSFE is isolated by a voltage follower, the voltage across the temperature control device (i.e., the cooling and heating device) is sampled by the analog-to-digital converter. The voltage sampling value is compared with the voltage set value. After the voltage controller calculates, the duty cycle and frequency of the control signal output by the PWM are adjusted, thereby changing the voltage across the temperature control device to achieve the first round of closed-loop control.

[0095] S2062. Convert the actual temperature value of the black body collected by the temperature sensor into a voltage value, sample it through an outer loop analog-to-digital converter, determine the actual temperature value corresponding to the sampled voltage value, calculate the difference between the actual temperature value and the temperature target value, perform compensation calculation based on the difference through an anti-disturbance control controller to obtain a control voltage value and a temperature control type, output the control voltage value and the temperature control type at both ends of the temperature control device through a voltage loop, so as to control the temperature control device to heat or cool the black body.

[0096] In this embodiment, Figure 2 As shown in the figure, the outer loop is the temperature loop, which consists of an auto-disturbance rejection controller, a voltage loop, a temperature control device (i.e., a cooler and a heater), a temperature sensor, and an analog-to-digital converter. The actual temperature of the blackbody is collected by the temperature sensor, and the actual temperature value of the blackbody collected by the temperature sensor is converted into a voltage value, which is sampled by the analog-to-digital converter, and the actual temperature value is compared with the temperature target value. After the operation of the auto-disturbance rejection controller, the control voltage value and the temperature control type are obtained, and then the control voltage value and the temperature control type at both ends of the temperature control device are output through the voltage loop, so as to heat or cool the blackbody and realize the second round of closed-loop control. Optionally, the temperature control type refers to the heating or cooling type. When the actual temperature value is higher than the temperature target value, the cooling type is adopted, and the blackbody is cooled by the temperature control device; when the actual temperature value is lower than the temperature target value, the heating type is adopted, and the blackbody is heated by the temperature control device to maintain the steady-state balance of the blackbody temperature. Through the dual closed-loop temperature control system, the system disturbance can be monitored and compensated in real time, thereby significantly reducing overshoot and steady-state error, and improving the dynamic performance and steady-state accuracy of the system.

[0097] In some embodiments, the sampling period of the temperature loop is 4 to 8 times that of the voltage loop, that is, before performing one temperature loop adjustment, 4 to 8 voltage loop adjustments have been performed. It can also be set to other values ​​without specific limitation.

[0098] The disclosed embodiment constructs a mathematical model of a blackbody temperature control system in response to a modeling operation of a user, and determines a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system. Further, the inner loop is set as a voltage loop, and the outer loop is set as a temperature loop. Based on the transfer function of the blackbody temperature control system, the controller of the inner loop is set as a voltage controller, and the controller of the outer loop is set as an auto-disturbance rejection controller, and the parameters of the voltage controller and the parameters of the auto-disturbance rejection controller are adjusted. The stability of the dual closed-loop temperature control system is tested by the root locus method. Then, the temperature of the blackbody is regulated by the voltage controller and / or the auto-disturbance rejection controller. Through this method, the outer loop is responsible for the overall control of the temperature through the auto-disturbance rejection controller, and the inner loop finely adjusts the voltage at both ends of the temperature control device through the voltage controller to change its heating or cooling power. Through the application of the auto-disturbance rejection technology and the dual closed-loop control, the system disturbance can be estimated and compensated in real time, thereby significantly reducing overshoot and steady-state errors, and improving the dynamic performance and steady-state accuracy of the system.

[0099] Figure 4 The schematic diagram of the structure of the blackbody double closed-loop temperature control device provided in the embodiment of the present disclosure. The blackbody double closed-loop temperature control device can be the electronic device described in the above embodiment, or the blackbody double closed-loop temperature control device can be a component or assembly in the electronic device. The blackbody double closed-loop temperature control device provided in the embodiment of the present disclosure can execute the processing flow provided in the blackbody double closed-loop temperature control method embodiment, such as Figure 4 As shown, the blackbody dual closed-loop temperature control device 40 includes: a construction unit 41, a building unit 42, and a control unit 43; wherein the construction unit 41 is used to construct a mathematical model of a blackbody temperature control system in response to a modeling operation of a user, and determine a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system; the construction unit 42 is used to construct a dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the dual closed-loop includes an inner loop and an outer loop; and the control unit 43 is used to control the temperature of the blackbody based on the dual closed-loop temperature control system.

[0100] Optionally, after constructing the dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, the device 40 further includes: a testing unit 44; the testing unit 44 is used to test the stability of the dual closed-loop temperature control system by using a root locus method.

[0101] Optionally, the transfer function of the blackbody temperature control system is expressed as follows:

[0102]

[0103] Among them, G() represents the transfer function of the blackbody temperature control system, K represents the amplification factor, T represents the time constant, τ represents the lag time, s represents the complex variable in the Laplace transform, and e is a constant.

[0104] Optionally, when the construction unit 42 constructs a dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, it is specifically used to: set the inner loop as a voltage loop and the outer loop as a temperature loop; based on the transfer function of the blackbody temperature control system, set the controller of the inner loop to a voltage controller and the controller of the outer loop to an auto-disturbance rejection controller; adjust the parameters of the voltage controller and the parameters of the auto-disturbance rejection controller; wherein the inner loop includes a voltage controller, a semiconductor field effect transistor, a voltage follower and an inner loop analog-to-digital converter; the outer loop includes an auto-disturbance rejection controller, a voltage loop, a temperature control device, a temperature sensor and an outer loop analog-to-digital converter.

[0105] Optionally, when the control unit 43 controls the temperature of the black body based on the dual closed-loop temperature control system, it is specifically used to: control the temperature of the black body through a voltage controller and / or an anti-disturbance control controller.

[0106] Optionally, when the control unit 43 controls the temperature of the black body through a voltage controller and / or an anti-disturbance control controller, it is specifically used to: sample the voltage at both ends of the temperature control device through an inner loop analog-to-digital converter, obtain a voltage sampling value, calculate the difference between the voltage sampling value and the voltage target value, perform compensation calculation based on the difference through the voltage controller, and adjust the duty cycle and frequency of the control signal to control the voltage at both ends of the temperature control device; and / or convert the actual temperature value of the black body collected by the temperature sensor into a voltage value, sample it through an outer loop analog-to-digital converter, determine the actual temperature value corresponding to the sampled voltage value, calculate the difference between the actual temperature value and the temperature target value, perform compensation calculation based on the difference through the anti-disturbance control controller to obtain the control voltage value and the temperature control type, and output the control voltage value and the temperature control type at both ends of the temperature control device through the voltage loop to control the temperature control device to heat or cool the black body.

[0107] Optionally, the voltage controller is a proportional-integral controller, and the transfer function of the voltage controller is expressed as follows:

[0108]

[0109] Among them, G i () represents the transfer function of the voltage controller, K p represents the voltage controller proportionality factor, τ i is the integral time constant of the voltage controller, and s represents the complex variable in the Laplace transform.

[0110] Figure 4 The blackbody double closed-loop temperature control device of the illustrated embodiment can be used to implement the technical solution of the above-mentioned method embodiment. Its implementation principle and technical effect are similar and will not be repeated here.

[0111] Figure 5 Schematic diagram of the structure of an electronic device in the embodiment of the present disclosure. Figure 5 , which shows a structural schematic diagram of an electronic device 600 suitable for implementing the embodiments of the present disclosure. Figure 5 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0112] like Figure 5 As shown, the electronic device 600 may include a processing device (e.g., a central processing unit, a graphics processor, etc.) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage device 608 to a random access memory (RAM) 603 to implement the blackbody double closed-loop temperature control method of the embodiment described in the present disclosure. In the RAM 603, various programs and data required for the operation of the electronic device 600 are also stored. The processing device 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0113] Typically, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 609. The communication device 609 may allow the electronic device 600 to communicate with other devices wirelessly or by wire to exchange data. Although Figure 5 The electronic device 600 is shown with various devices, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0114] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program contains a program code for executing the method shown in the flowchart, thereby implementing the blackbody double closed-loop temperature control method as described above. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 609, or installed from the storage device 608, or installed from the ROM 602. When the computer program is executed by the processing device 601, the above-mentioned functions defined in the method of the embodiment of the present disclosure are executed.

[0115] It should be noted that the computer-readable medium disclosed above may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in combination with an instruction execution system, device or device. In the present disclosure, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, in which a computer-readable program code is carried. This propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. The computer readable signal medium may also be any computer readable medium other than a computer readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. The program code contained on the computer readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0116] In some embodiments, the client and the server may communicate using any currently known or future developed network protocol such as HTTP (HyperText Transfer Protocol), and may be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network ("LAN"), a wide area network ("WAN"), an internet (e.g., the Internet), and a peer-to-peer network (e.g., an ad hoc peer-to-peer network), as well as any currently known or future developed network.

[0117] The computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0118] The computer-readable medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device:

[0119] In response to a modeling operation of a user, a mathematical model of a blackbody temperature control system is constructed, and a transfer function of the blackbody temperature control system is determined based on the mathematical model of the blackbody temperature control system;

[0120] Constructing a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop;

[0121] The temperature of the black body is regulated based on the double closed-loop temperature control system.

[0122] Optionally, when the above one or more programs are executed by the electronic device, the electronic device may also execute other steps described in the above embodiments.

[0123] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages ​​or a combination thereof, including, but not limited to, object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).

[0124] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0125] The units involved in the embodiments described in the present disclosure may be implemented by software or hardware, wherein the name of a unit does not, in some cases, constitute a limitation on the unit itself.

[0126] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0127] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0128] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0129] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0130] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A blackbody double closed-loop temperature control method, characterized in that: The method comprises: In response to a modeling operation of a user, a mathematical model of a blackbody temperature control system is constructed, and a transfer function of the blackbody temperature control system is determined based on the mathematical model of the blackbody temperature control system; Constructing a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop; The temperature of the black body is regulated based on the double closed-loop temperature control system.

2. The method according to claim 1, characterized in that After constructing the dual closed-loop temperature control system based on the transfer function of the blackbody temperature control system, the method further includes: The stability of the double closed-loop temperature control system is tested by the root locus method.

3. The method according to claim 1, characterized in that The transfer function of the blackbody temperature control system is expressed as follows: Among them, G() represents the transfer function of the blackbody temperature control system, K represents the amplification factor, T represents the time constant, τ represents the lag time, s represents the complex variable in the Laplace transform, and e is a constant.

4. The method according to claim 1, characterized in that: The dual closed-loop temperature control system is constructed based on the transfer function of the blackbody temperature control system, including: Set the inner loop to voltage loop and the outer loop to temperature loop; Based on the transfer function of the blackbody temperature control system, the controller of the inner loop is set to a voltage controller, and the controller of the outer loop is set to an active disturbance rejection controller; Adjust the parameters of the voltage controller and the parameters of the active disturbance rejection controller; The inner loop includes a voltage controller, a semiconductor field effect transistor, a voltage follower and an inner loop analog-to-digital converter; the outer loop includes an anti-disturbance controller, a voltage loop, a temperature control device, a temperature sensor and an outer loop analog-to-digital converter.

5. The method according to claim 1, characterized in that The temperature of the black body is regulated based on the double closed-loop temperature control system, including: The temperature of the black body is regulated by a voltage controller and / or an auto-disturbance rejection controller.

6. The method according to claim 5, characterized in that The temperature of the black body is regulated by a voltage controller and / or an anti-disturbance control controller, including: Sampling the voltage across the temperature control device through an inner loop analog-to-digital converter, obtaining a voltage sampling value, calculating the difference between the voltage sampling value and the voltage target value, performing compensation calculation based on the difference through a voltage controller, and adjusting the duty cycle and frequency of the control signal to regulate the voltage across the temperature control device; and / or The actual temperature value of the black body collected by the temperature sensor is converted into a voltage value, sampled by an outer loop analog-to-digital converter, the actual temperature value corresponding to the sampled voltage value is determined, the difference between the actual temperature value and the temperature target value is calculated, and compensation calculation is performed based on the difference by the self-disturbance rejection controller to obtain the control voltage value and the temperature control type, and the control voltage value and the temperature control type at both ends of the temperature control device are output through the voltage loop to control the temperature control device to heat or cool the black body.

7. The method according to claim 4, characterized in that The voltage controller is a proportional-integral controller, and the transfer function of the voltage controller is expressed as follows: Among them, G i () represents the transfer function of the voltage controller, K p represents the voltage controller proportionality factor, τ i is the integral time constant of the voltage controller, and s represents the complex variable in the Laplace transform.

8. A blackbody double closed-loop temperature control device, characterized in that: include: A construction unit, configured to construct a mathematical model of a blackbody temperature control system in response to a modeling operation of a user, and determine a transfer function of the blackbody temperature control system based on the mathematical model of the blackbody temperature control system; A construction unit, used to construct a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, wherein the double closed-loop includes an inner loop and an outer loop; A control unit is used to control the temperature of the black body based on the double closed-loop temperature control system.

9. The device according to claim 8, characterized in that After the dual closed-loop temperature control system is constructed based on the transfer function of the blackbody temperature control system, the device further includes: a testing unit; The testing unit is used to test the stability of the double closed-loop temperature control system by using a root locus method.

10. The device according to claim 8, characterized in that The transfer function of the blackbody temperature control system is expressed as follows: Among them, G() represents the transfer function of the blackbody temperature control system, K represents the amplification factor, T represents the time constant, τ represents the lag time, s represents the complex variable in the Laplace transform, and e is a constant.

11. The device according to claim 8, characterized in that When the construction unit constructs a double closed-loop temperature control system based on the transfer function of the blackbody temperature control system, it is specifically used to: Set the inner loop to voltage loop and the outer loop to temperature loop; Based on the transfer function of the blackbody temperature control system, the controller of the inner loop is set to a voltage controller, and the controller of the outer loop is set to an active disturbance rejection controller; Adjust the parameters of the voltage controller and the parameters of the active disturbance rejection controller; The inner loop includes a voltage controller, a semiconductor field effect transistor, a voltage follower and an inner loop analog-to-digital converter; the outer loop includes an anti-disturbance controller, a voltage loop, a temperature control device, a temperature sensor and an outer loop analog-to-digital converter.

12. The device according to claim 8, characterized in that When the control unit controls the temperature of the black body based on the double closed-loop temperature control system, it is specifically used to: The temperature of the black body is regulated by a voltage controller and / or an auto-disturbance rejection controller.

13. The device according to claim 12, characterized in that When the control unit controls the temperature of the black body through the voltage controller and / or the anti-disturbance control unit, it is specifically used to: Sampling the voltage across the temperature control device through an inner loop analog-to-digital converter, obtaining a voltage sampling value, calculating the difference between the voltage sampling value and the voltage target value, performing compensation calculation based on the difference through a voltage controller, and adjusting the duty cycle and frequency of the control signal to regulate the voltage across the temperature control device; and / or The actual temperature value of the black body collected by the temperature sensor is converted into a voltage value, sampled by an outer loop analog-to-digital converter, the actual temperature value corresponding to the sampled voltage value is determined, the difference between the actual temperature value and the temperature target value is calculated, and compensation calculation is performed based on the difference by the self-disturbance rejection controller to obtain the control voltage value and the temperature control type, and the control voltage value and the temperature control type at both ends of the temperature control device are output through the voltage loop to control the temperature control device to heat or cool the black body.

14. The device according to claim 11, characterized in that The voltage controller is a proportional-integral controller, and the transfer function of the voltage controller is expressed as follows: Among them, G i () represents the transfer function of the voltage controller, K p represents the voltage controller proportionality factor, τ i is the integral time constant of the voltage controller, and s represents the complex variable in the Laplace transform.

15. An electronic device, characterized in that: include: Memory; processor; as well as Computer programs; The computer program is stored in the memory and is configured to be executed by the processor to implement the method according to any one of claims 1 to 7.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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