A high-voltage powered induction heating furnace power control system and method for lunar soil in-situ heating

Abstract

The application discloses a high-voltage power supply type induction heating furnace power control system and method for lunar soil in-situ heating, mainly serving sample heating and volatile extraction, wherein the system comprises upper and lower computer controllers and a driver, the upper computer is connected with the lower computer through RS485, the driver comprises an H-bridge driver, a resonance capacitor, a voltage conversion module, a V / I monitoring module and a temperature measurement module, the lower computer is connected with the H-bridge driver, the H-bridge driver is connected with the resonance capacitor, and the resonance capacitor is connected with a coil of an induction heating furnace body; the lower computer is also connected with the voltage conversion module, the voltage conversion module is connected with the V / I monitoring module, the V / I monitoring module is connected with the H-bridge driver, the H-bridge driver is electrically connected with the coil, and the V / I monitoring module is also directly electrically connected with the lower computer; the lower computer is also electrically connected with the temperature measurement module, and the temperature measurement module is electrically connected with a thermocouple. The system can meet the requirements of temperature rising and temperature keeping in the induction heating process, thereby ensuring the smooth progress of the volatile extraction task.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lunar soil sample processing and volatile extraction, and particularly relates to a high-voltage powered induction heating furnace power control system and method for in-situ heating of lunar soil. BACKGROUND

[0002] Deep space exploration is not only a manifestation of a country's scientific and technological level, but also a manifestation of a country's comprehensive national strength. The first sampling and returning mission of the fourth phase of China's lunar exploration has made a great contribution to the deduction of the evolution history of the moon and scientific research. With the continuous updating and iteration of technology, the new phase of lunar exploration mission plans to analyze lunar soil samples in-situ.

[0003] Unlike the sampling mission, in-situ analysis does not require the sample to be brought back to Earth for extraction and analysis directly on orbit, so a method for heating and extracting volatiles from lunar soil samples is involved, which can process and extract the lunar soil samples obtained on orbit. When the rover is working in the lunar south polar region, the solar panel can only obtain a small amount of power from the weak sunlight, so the power of the analysis task is limited. In traditional lunar soil exploration, an electric resistance furnace is commonly used. This heating method requires heating the entire furnace body, which consumes a lot of energy and takes a long time to heat. The induction heating method can only heat the collected trace sample, and the heating object has a small volume, low energy consumption, and fast heating speed, but the induction heating temperature rising speed is very fast, and the temperature control of the heated object cannot be realized. SUMMARY

[0004] The technical problem actually solved by the present application is how to make the PWM square wave frequency output by the lower machine controller consistent with the inherent frequency of the coil-capacitor resonant circuit, thereby maximizing the alternating magnetic field energy conversion efficiency and realizing precise temperature control and pyrolysis of lunar soil samples.

[0005] To this end, one object of the present application is to provide a high-voltage powered induction heating furnace power control system for in-situ heating of lunar soil.

[0006] Another object of the present application is to provide a high-voltage powered induction heating furnace power control method for in-situ heating of lunar soil.

[0007] To achieve the above object, the embodiment of the present application provides a high-voltage power supply type induction heating furnace power control system for lunar soil in-situ heating, which comprises an upper computer controller, a lower computer controller and a driver, wherein the upper computer controller is electrically connected with the lower computer controller through RS485; the driver comprises an H-bridge driver, a resonance capacitor, a voltage conversion module, a V / I monitoring module and a temperature measuring module, wherein the lower computer controller is electrically connected with the H-bridge driver, the H-bridge driver is electrically connected with the resonance capacitor, and the resonance capacitor is electrically connected with a coil of an induction heating furnace body; the lower computer controller is also electrically connected with the voltage conversion module, the voltage conversion module is electrically connected with the V / I monitoring module, the V / I monitoring module is electrically connected with the H-bridge driver, the H-bridge driver is electrically connected with the coil of the induction heating furnace body, and the V / I monitoring module is also directly electrically connected with the lower computer controller; the lower computer controller is also electrically connected with the temperature measuring module, and the temperature measuring module is electrically connected with a thermocouple of the induction heating furnace body.

[0008] The high-voltage power supply type induction heating furnace power control system for lunar soil in-situ heating provided by the embodiment of the present application mainly serves sample heating and volatile extraction, adopts an E-shaped magnetic conductor type induction heater, can efficiently convert electric energy into heat energy through magnetic energy, and has a cleverly designed power supply driving module, which inputs a PWM wave of a certain resonance frequency, and the driver can monitor input voltage, input current, power temperature, the phase of an inverter side signal and the phase of a resonance side signal while differentiating the signal for driving the inductor; the lower computer controller adopts a TMS320F28335 digital signal processing module, differentiates an interface to output a PWM wave of a certain frequency for driving a resonance circuit, and receives current and voltage feedback pulses monitored by the driver through a differential input interface, adjusts the frequency of the input PWM through a digital phase-locked function built in the controller, realizes consistency of the input frequency and the resonance frequency, and makes the inductor in an optimal working state; meanwhile, the controller receives voltage values of temperature measuring elements such as thermocouples and thermocouples of the induction heating furnace, interprets the voltage values into temperature values for temperature closed-loop control, and finally realizes temperature rising and temperature keeping requirements in the induction heating process, thereby ensuring smooth volatile extraction.

[0009] In addition, the high-voltage power supply type induction heating furnace power control system for lunar soil in-situ heating provided by the above embodiment of the present application can have the following additional technical features.

[0010] Further, in an embodiment of the present application, the lower computer controller is used for outputting a PWM square wave of a preset frequency to the H-bridge driver and the comparator.

[0011] Further, in an embodiment of the present application, the driver further comprises an efficiency feedback module, wherein the efficiency feedback module comprises a comparator, a phase detector and a low-pass filter, the resonant capacitor is electrically connected with the comparator, the comparator is electrically connected with the phase detector, the phase detector is electrically connected with the low-pass filter, and the low-pass filter is connected with the lower machine controller.

[0012] Further, in an embodiment of the present application, the efficiency feedback module is used to compare the resonant frequency with the frequency of the input PWM square wave and output the phase difference between the two signal frequencies for comparison and analysis by the lower machine controller to adjust the frequency of the input PWM square wave.

[0013] To achieve the above-mentioned purposes, another aspect of the embodiment of the present application provides a high-voltage power supply type induction heating furnace power control method for lunar soil in-situ heating, which comprises the following steps: step S1, inputting a preset temperature value into the upper machine controller; step S2, selecting an input waveform duty cycle according to the preset temperature value by the lower machine controller, and determining the input frequency of the PWM square wave according to the input waveform duty cycle; step S3, heating the induction heating furnace body according to the input frequency and reading the phase difference between the inverter frequency and the resonant frequency; step S4, judging whether the input frequency is ahead of or lags behind the resonant frequency according to the phase difference, if ahead, reducing the input frequency, if lagging, increasing the input frequency, so as to keep the inverter frequency consistent with the resonant frequency; step S5, reading the current temperature value by the temperature measurement module and judging whether the current temperature value needs to be kept, if not, performing PD adjustment, and iteratively executing steps S2-S5 until the current temperature value needs to be kept, and outputting the current temperature value, the current input frequency and the current power; step S6, judging whether the heating time reaches the preset heating time, then iteratively executing steps S3-S6 until the preset heating time is reached, and completing the heating extraction.

[0014] The power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating provided by the embodiment of the present application mainly serves sample heating and volatile extraction, adopts an E-shaped magnetic conductor type induction heater, can efficiently convert electric energy into heat energy through magnetic energy, and has a cleverly designed power supply driving module, which inputs a PWM wave of a certain resonant frequency, and the driver can monitor the input voltage, input current, power temperature, phase of the inverter side signal and phase of the resonant side signal while differentiating the signals for driving the inductor; the lower computer controller adopts a TMS320F28335 digital signal processing module, differentiates the interface to output a PWM wave of a certain frequency for driving the resonant circuit, and receives the current and voltage feedback pulses monitored by the driver through the differential input interface, adjusts the frequency of the input PWM through the digital phase-locked function built in the controller, makes the input frequency consistent with the resonant frequency, and makes the inductor in the best working state; meanwhile, the controller receives the voltage values of the temperature measuring elements such as thermocouples and thermopiles of the induction heating furnace, interprets the temperature values for temperature closed-loop control, and finally realizes the requirements of temperature rising and temperature keeping in the induction heating process, thereby ensuring the smooth progress of the volatile extraction task.

[0015] In addition, the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating according to the above-mentioned embodiment of the present application can have the following additional technical features:

[0016] Further, in an embodiment of the present application, the range of the input waveform duty cycle is 0-90%.

[0017] Further, in an embodiment of the present application, the input waveform duty cycle in step S2 is input into a waveform generating function to determine the input frequency.

[0018] Further, in an embodiment of the present application, step S5 is specifically: comparing the current temperature value with the preset temperature value, inputting the difference into a PD algorithm, multiplying the output value of the PD algorithm by a preset coefficient ratio as a new input waveform duty cycle, and determining the new input frequency of the PWM square wave according to the new input waveform duty cycle.

[0019] Another aspect of the embodiment of the present application provides a computer device, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating as described in the above-mentioned embodiment when executing the computer program.

[0020] Still another aspect of the embodiment of the present application provides a non-temporary computer readable storage medium, which stores a computer program, and the computer program is executable on a processor to implement the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating as described in the above-mentioned embodiment.

[0021] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0023] Fig. 1 is a schematic diagram of a structure of a high-voltage powered induction heating furnace power control system for lunar soil in-situ heating according to an embodiment of the present application;

[0024] Fig. 2 is a schematic diagram of a structure of an induction heating furnace according to an embodiment of the present application;

[0025] Fig. 3 is a schematic diagram of a principle design of a heating furnace driving power supply module according to an embodiment of the present application;

[0026] Fig. 4 is a schematic diagram of a connection of an induction heating furnace and a high-voltage powered induction heating furnace power control system for lunar soil in-situ heating according to an embodiment of the present application;

[0027] Fig. 5 is an inverter control signal output waveform according to an embodiment of the present application;

[0028] Fig. 6 is a flow chart of a high-voltage powered induction heating furnace power control method for lunar soil in-situ heating according to an embodiment of the present application;

[0029] Fig. 7 is a temperature control algorithm flow chart according to an embodiment of the present application.

[0030] BRIEF DESCRIPTION OF DRAWINGS

[0031] 100 - upper computer controller, 200 - lower computer controller, 300 - driver, 301 - voltage inverter module (H-bridge driver), 302 - resonance capacitor, 303 - voltage conversion module, 304 - V / I monitoring module, 305 - temperature measurement module, 306 - efficiency feedback module, 1 - furnace body, 2 - coil, 3 - thermocouple, 4 - furnace drag, 5 - magnetic conductor, 6 - gas outlet pipe, 7 - reflecting screen, 8 - thermocouple, 9 - sample metal container, and 10 - sealing ring. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which like numerals indicate like elements or components, the intention being to describe embodiments fallaciously and by way of explanation of the present application, and not by way of restriction.

[0033] The power control system and method of the high-voltage powered induction heating furnace for lunar soil in-situ heating according to the embodiments of the present application will be described below with reference to the accompanying drawings. First, the power control system of the high-voltage powered induction heating furnace for lunar soil in-situ heating according to the embodiments of the present application will be described with reference to the accompanying drawings.

[0034] Fig. 1 is a structural schematic diagram of the power control system of the high-voltage powered induction heating furnace for lunar soil in-situ heating according to an embodiment of the present application.

[0035] As shown in Fig. 1, the system comprises a host computer controller 100, a slave computer controller 200 and a driver 300.

[0036] The host computer controller 100 is electrically connected with the slave computer controller 200 through RS485. The driver 300 comprises an H-bridge driver 301, a resonant capacitor 302, a voltage conversion module 303, a V / I monitoring module 304 and a temperature measurement module 305. The slave computer controller 200 is electrically connected with the H-bridge driver 301, the H-bridge driver 301 is electrically connected with the resonant capacitor 302, and the resonant capacitor 302 is electrically connected with the coil 2 of the induction heating furnace body. The slave computer controller 200 is also electrically connected with the voltage conversion module 303, the voltage conversion module 303 is electrically connected with the V / I monitoring module 304, the V / I monitoring module 304 is electrically connected with the H-bridge driver 301, and the H-bridge driver 301 is electrically connected with the coil 2 of the induction heating furnace body. The V / I monitoring module 304 is also directly electrically connected with the slave computer controller 200. The slave computer controller 200 is further electrically connected with the temperature measurement module 305, and the temperature measurement module 305 is electrically connected with the thermocouple 3 of the induction heating furnace body.

[0037] It can be understood that the host computer controller 100 is a PC, and the slave computer controller is a DSP digital processor made of a TMS32F28335 chip, and the two communicate through RS485.

[0038] Further, in an embodiment of the present application, the driver further comprises an efficiency feedback module 306. The efficiency feedback module comprises a comparator, a phase detector and a low-pass filter. The resonant capacitor is electrically connected with the comparator, the comparator is electrically connected with the phase detector, the phase detector is electrically connected with the low-pass filter, and the low-pass filter is electrically connected with the slave computer controller.

[0039] Further, in an embodiment of the present application, the efficiency feedback module 306 is used to compare the resonant frequency with the frequency of the input PWM square wave and output the phase difference of the two signal frequencies for comparison and analysis by the slave computer controller to adjust the frequency of the input PWM square wave.

[0040] Specifically, as shown in Figure 2, a cross-sectional view of the sample induction heating furnace mainly includes a coil, a magnetic conductor, a metal sample container, a thermocouple and a thermal resistance, etc., wherein the magnetic conductor 5 is used to constrain the alternating magnetic field generated by the coil 2, so that the magnetic flux can pass through the sample metal container 9, and under the action of electromagnetic induction, eddy current is generated to heat the container, thereby achieving the purpose of heating the internal sample; the thermocouple 3 and the thermocouple 8 are used as temperature measuring elements to monitor the temperature of the container in real time; the reflector 7 is used for heat preservation; the rover will collect the lunar soil sample through the mechanical arm and the sampling tube in the lunar south polar region, and encapsulate the trace lunar soil sample in the annular metal container 9, so that the inside of the metal container is the lunar soil, and the shell is an annular encapsulation device made of a metal conductor and has a certain electric conductivity.

[0041] As shown in Figure 3 , when the system of the embodiment of the present application works, a high-frequency PWM square wave is input into the coil 2, and an alternating magnetic field is generated by the electromagnetic induction principle, and since the magnetic permeability of the magnetic conductor is higher than that of air, the magnetic field is constrained inside the magnetic conductor; at the same time, the alternating magnetic field passes through the sample metal container from the center, and an induced electromotive force is generated in the metal container, and according to the Joule heat law, the electric eddy current is converted into heat energy in the metal container, thereby heating the internal lunar soil to achieve the purpose of pyrolyzing the lunar soil and extracting volatile components.

[0042] Further, as shown in Figures 4-5As shown, the lower machine controller 200 inputs the preset frequency PWM square wave to the driver 300, and the square wave duty cycle determines the size of the power input to the induction coil by the drive board. The square wave signal is transmitted to the inverter module 301 and also to the comparator for monitoring whether the input signal frequency and duty cycle are incorrect. At the same time, the lower machine controller 200 inputs 15V DC to the voltage conversion module 303, which converts the 15V voltage to 9V and 5V voltage, and feeds back the current total input and 5V and 9V voltage values to the lower machine controller 200 through the V / I monitoring module 304 for power monitoring, and inputs 9V driving voltage to the inverter module 301. The inverter module 304 is mainly composed of an H-bridge driver, which can amplify the input PWM waveform under the 9V driving voltage, so that the resonance effect occurs between the capacitor and the induction coil, to drive the following resonance circuit and generate an alternating magnetic field. The resonance circuit 302 is designed with a current sensor for monitoring the resonance frequency, and since the resonance frequency and the input PWM wave frequency may not be consistent, the heating efficiency is reduced, so the feedback module 306 is added to compare the input frequency, determine which frequency is higher, and transmit the phase difference to the lower machine controller 200, which adjusts the input PWM wave frequency according to the phase difference, so that the input frequency and the resonance frequency remain consistent. By adding the inductor to collect the signal frequency on the resonance side, and transmitting it to the comparator, phase detector and low pass filter in the efficiency feedback module 306 together with the input resonance PWM wave, the phase difference of the two signal frequencies is compared and output, for the controller to compare and analyze, so as to adjust the input signal frequency, so that the input PWM wave frequency and the resonance frequency are consistent, and the entire induction heating system can work at the highest efficiency.

[0043] Further, during the heating process, a thermocouple and a thermopile are installed inside the induction heating furnace, which jointly monitor the temperature and serve as a backup to prevent one from burning out and failing to monitor the temperature. The thermopile and thermocouple convert the temperature information into a voltage signal, which is read by the lower machine controller 200 through the internal analog quantity acquisition IO port, and is interpreted into a temperature value for temperature closed loop. A temperature control algorithm is written in the lower machine controller 200, and the PD algorithm in PID is used to quickly adjust the power so that the actual temperature approaches the set temperature.

[0044] The high-voltage power supply type induction heating furnace power control system for lunar soil in-situ heating according to the embodiment of the present application mainly serves sample heating and volatile extraction, adopts an E-shaped magnetic conductor type induction heater, can efficiently convert electric energy into heat energy through magnetic energy, and the power supply driving module is designed ingeniously, the controller inputs a PWM wave of a certain resonant frequency, the driver can monitor the input voltage, input current, power supply temperature, phase of the inverter side signal and phase of the resonant side signal while differentiating the signals for driving the inductor, the lower computer controller adopts a TMS320F28335 digital signal processing module, differentiates the interface to output a PWM wave of a certain frequency for driving the resonant circuit, and the differential input interface receives the current and voltage feedback pulses monitored by the driver, the frequency of the input PWM is adjusted through the digital phase-locked function built in the controller, the input frequency is consistent with the resonant frequency, the inductor is in the best working state, the controller receives the voltage values of the temperature measuring elements such as thermocouples and thermopiles of the induction heating furnace, interprets the temperature values for temperature closed-loop control, and finally realizes the requirements of temperature rising and temperature keeping in the induction heating process, thereby ensuring the smooth progress of the volatile extraction task.

[0045] Secondly, the high-voltage power supply type induction heating furnace power control method for lunar soil in-situ heating according to the embodiment of the present application is described with reference to the accompanying drawings.

[0046] Fig. 6 is a flow chart of the high-voltage power supply type induction heating furnace power control method for lunar soil in-situ heating according to one embodiment of the present application.

[0047] As shown in Fig. 6, the method comprises the following steps: Figure 6

[0048] In step S1, a preset temperature value is input into the upper computer controller.

[0049] In step S2, the lower computer controller selects an input waveform duty cycle according to the preset temperature value, and determines the input frequency of the PWM square wave according to the input waveform duty cycle.

[0050] As shown in Fig. 6, the duty cycle is Ton / Tcycle, and Tcycle is related to the resonant frequency. The embodiment of the present application changes the effective value of the output voltage of the driver by changing Ton / Tcycle, so that the input voltage range is within 0-8V, the impedance of the induction coil changes little, the purpose of adjusting the voltage to adjust the power is achieved, the power is reduced and the temperature is reduced, and the power is increased and the temperature is increased. Figure 5

[0051] In step S3, the induction heating furnace body is heated according to the input frequency, and the phase difference between the inverter frequency and the resonant frequency is read.

[0052] ​​Further, in one embodiment of the present application, step S5 is specifically:

[0053] The current temperature value is compared with the preset temperature value, the difference is input into the PD algorithm, and the output value is multiplied by the preset coefficient ratio as a new input waveform duty cycle, and the new input frequency of the PWM square wave is determined according to the new input waveform duty cycle.

[0054] In step S4, it is judged whether the input frequency is leading or lagging the resonant frequency according to the phase difference, and if leading, the input frequency is reduced, and if lagging, the input frequency is increased, so that the inverter frequency and the resonant frequency remain consistent.

[0055] In step S5, the current temperature value is read by the temperature measurement module, and it is judged whether the current temperature value needs to be maintained, and if not, the PD adjustment is performed, and steps S2-S5 are iteratively executed until the current temperature value needs to be maintained, and the current temperature value, the current input frequency and the current power are output.

[0056] In step S6, it is judged whether the heating time reaches the preset heating time, and then steps S3-S6 are iteratively executed until the preset heating time is reached, and the heating extraction is completed.

[0057] Specifically, as shown in Figure 7 The specific working process of the control method is as follows: the lower machine controller 200 selects the input signal duty cycle to select the input power according to the temperature setting value input by the upper machine controller PC100, the signal duty cycle changes in the range of 0-100%, but in order to ensure that the H-bridge driving circuit does not short circuit, a dead zone needs to be set, that is, the duty cycle cannot exceed the range of 90%, at the same time that the lower machine controller 200 inputs a certain frequency signal to the driver 300, the lower machine controller 200 reads the phase difference between the resonant frequency and the inverter frequency, judges whether the input frequency is leading or lagging the resonant frequency, if leading, the input frequency is reduced, and if lagging, the input frequency is increased, so that the inverter and the resonant frequency remain consistent, and the inductive heating system reaches the highest efficient working state. At the same time, the thermocouple and the thermopile transmit the temperature value of the heated sample metal container to the controller in real time, and the lower machine controller 200 compares it with the set value, the difference is input into the PD algorithm, the output value is multiplied by the coefficient to be proportional to the duty cycle value, and is input into the waveform generating function to realize the input power adjustment, in addition, the heating needs to be completed to the preset time to complete the heating extraction.

[0058] It should be noted that the foregoing explanation and description of the power control system for the high-voltage power supply type inductive heating furnace for lunar soil in-situ heating also applies to the method of this embodiment, which will not be repeated here.

[0059] The power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating provided by the embodiment of the present application mainly serves sample heating and volatile extraction, adopts an E-shaped magnetic conductor type induction heater, can efficiently convert electric energy into heat energy through magnetic energy, and the power supply driving module is designed ingeniously, the controller inputs a PWM wave of a certain resonant frequency, the driver can monitor the input voltage, input current, power supply temperature, phase of the inverter side signal and phase of the resonant side signal while differentiating the signals for driving the inductor, the lower computer controller adopts a TMS320F28335 digital signal processing module, differentiates the interface to output a PWM wave of a certain frequency for driving the resonant circuit, and the differential input interface receives the current and voltage feedback pulses monitored by the driver, the frequency of the input PWM is adjusted through the digital phase-locked function built in the controller, the input frequency is consistent with the resonant frequency, the inductor is in the best working state, the controller receives the voltage values of the thermocouple and thermopile temperature measuring elements of the induction heating furnace, interprets the temperature values for temperature closed-loop control, and finally realizes the requirements of temperature rising and temperature keeping in the induction heating process, thereby ensuring the smooth progress of the volatile extraction task.

[0060] In order to realize the above-mentioned embodiments, the present application further provides a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating as described in the above-mentioned embodiments.

[0061] In order to realize the above-mentioned embodiments, the present application further provides a non-temporary computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to realize the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating as described in the above-mentioned embodiments.

[0062] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0063] Moreover, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of indicated technical features. Thus, features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, for example, two, three, etc., unless explicitly specified otherwise.

[0064] Any process or method descriptions or descriptions of the flow diagrams herein, or otherwise described herein, can be understood as representing the steps of a method implemented by a computer or a processor, or otherwise understood as representing a computer or processor program code segment, or a computer or processor program code segment that can be executed over one or more computers or processors, and that performs a process or method. The present application is not limited to the details of the flow diagrams or the processing steps described herein, and it is contemplated that other steps or methods of performing a process or method can be employed, and that some of the described processing can take place significantly after other processing and / or in different order than the steps described herein. These descriptions and representations are meant to be purely exemplary, and the true scope of the application is represented by the appended claims.

[0065] Logic and / or steps represented in flow diagrams or otherwise described herein, for example, can be embodied in computer-readable instructions, which can be used to cause one or more computer or processors to perform the actions indicated in the flow diagrams. Likewise, software implementation of such logic and / or steps can be shown in one or more flow diagrams, which can be described herein as a set of steps or state transitions. It will be apparent to those skilled in the art that the steps in these flow diagrams can be implemented in software, firmware, special-purpose digital logic, or any combination thereof. It should also be apparent that a variety of software tools and techniques exist for use in designing and synthesizing such software or firmware, and such tools and techniques can be used to implement the flow diagrams herein. For example, it is common practice to use high-level programming languages to design software that is then compiled for use with a particular hardware configuration. Similarly, it is common practice to use hardware description languages (HDLs) to design hardware configurations that are then synthesized for use with a particular hardware configuration. In this context, the flow diagrams herein can be viewed as representations of software or HDL code that can be used to configure a computer or processor to perform the actions indicated in the flow diagrams.

[0066] It should be understood that various parts of the present application can be implemented in hardware, software, firmware or a combination thereof. In the above embodiments, the N steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As in another embodiment, if implemented in hardware, any of the following technologies known in the art or their combinations can be used: discrete logic circuit with logic gate circuit for implementing logic functions on data signals, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) and the like.

[0067] Those skilled in the art of the present technology can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by a program instructing the relevant hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0068] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically alone, or two or more units can be integrated into one module. The above integrated module can be realized in the form of hardware or in the form of a software functional module. The integrated module, if realized in the form of a software functional module and sold or used as an independent product, can also be stored in a computer readable storage medium.

[0069] The above-mentioned storage medium can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A high voltage powered induction heating furnace power control system for in-situ heating of lunar regolith, characterized by, The system comprises an upper computer controller, a lower computer controller and a driver, wherein, the upper computer controller is electrically connected with the lower computer controller through RS485; the driver comprises an H-bridge driver, a resonance capacitor, a voltage conversion module, a V / I monitoring module and a temperature measurement module, wherein, the lower computer controller is electrically connected with the H-bridge driver, the H-bridge driver is electrically connected with the resonance capacitor, and the resonance capacitor is electrically connected with the coil of the induction heating furnace body; the lower computer controller is also electrically connected with the voltage conversion module, the voltage conversion module is electrically connected with the V / I monitoring module, the V / I monitoring module is electrically connected with the H-bridge driver, the H-bridge driver is electrically connected with the coil of the induction heating furnace body, and the V / I monitoring module is also directly electrically connected with the lower computer controller; the lower computer controller is further electrically connected with the temperature measurement module, and the temperature measurement module is electrically connected with the thermocouple of the induction heating furnace body; the induction heating furnace comprises a coil, a magnetic conductor, a sample metal container, a thermocouple and a thermal resistance, wherein the magnetic conductor is used to constrain the alternating magnetic field generated by the coil, so that the magnetic flux can pass through the sample metal container to generate eddy current under the action of electromagnetic induction; the thermocouple and the thermal resistance are used as temperature measurement elements to monitor the temperature of the container in real time; the reflecting screen is used for heat preservation; the rover will collect the lunar soil sample through the mechanical arm and the sampling tube in the lunar south polar region, and encapsulate the trace lunar soil sample in the sample metal container; the lower computer controller is used to output the preset frequency PWM square wave to the H-bridge driver and the comparator; the driver further comprises an efficiency feedback module, wherein the efficiency feedback module comprises a comparator, a phase detector and a low-pass filter, the resonance capacitor is electrically connected with the comparator, the comparator is electrically connected with the phase detector, the phase detector is electrically connected with the low-pass filter, and the low-pass filter is connected with the lower computer controller; the efficiency feedback module is used to compare the resonance frequency with the frequency of the input PWM square wave, and output the phase difference of the two signal frequencies for comparison and analysis by the lower computer controller, so as to adjust the frequency of the input PWM square wave. The power control system of the high-voltage powered induction heating furnace for in-situ heating of lunar soil in claim 1 comprises the following steps:

2. A high-voltage powered induction heating furnace power control method for lunar soil in-situ heating, characterized in that, step S1, inputting a preset temperature value into the upper computer controller; step S2, selecting the input waveform duty cycle according to the preset temperature value, and determining the input frequency of the PWM square wave according to the input waveform duty cycle; step S3, heating the induction heating furnace body according to the input frequency, and reading the phase difference between the inverter frequency and the resonance frequency; step S4, judging whether the input frequency is ahead of or behind the resonance frequency according to the phase difference, and if ahead, reducing the input frequency, and if behind, increasing the input frequency, so as to keep the inverter frequency consistent with the resonance frequency; ​ In step S5, the current temperature value is read by using the temperature measuring module, and it is determined whether the current temperature value needs to be kept. If not, PD adjustment is performed, and steps S2-S5 are iteratively executed until the current temperature value needs to be kept, and the current temperature value, the current input frequency and the current power are output. In step S6, it is determined whether the heating time reaches the preset heating time, and steps S3-S6 are iteratively executed until the preset heating time is reached, and the heating extraction is completed.

3. The method for power control of high-voltage powered induction heating furnace for lunar soil in-situ heating according to claim 2, characterized in that, The input waveform duty cycle ranges from 0 to 90%.

4. The method for power control of high-voltage powered induction heating furnace for lunar soil in-situ heating according to claim 2, characterized in that, In step S2, the input waveform duty cycle is input into a waveform generating function to determine the input frequency.

5. The method for high-voltage powered induction heating furnace power control for lunar regolith in-situ heating of claim 2, wherein, In step S5, the current temperature value is compared with a preset temperature value, a difference value is input into a PD algorithm, and a preset coefficient proportion of an output value of the PD algorithm is taken as a new input waveform duty cycle, and a new input frequency of a PWM square wave is determined according to the new input waveform duty cycle. The computer program is executed by the processor to implement the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating according to any one of claims 2-5.

6. A computer device, comprising: The computer program is executed by the processor to implement the power control method for the high-voltage powered induction heating furnace for lunar soil in-situ heating according to any one of claims 2-5.

7. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, ​

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