CN112555918A - Gas stove, fire control method and computer readable storage medium - Google Patents
Gas stove, fire control method and computer readable storage medium Download PDFInfo
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- CN112555918A CN112555918A CN202011258487.5A CN202011258487A CN112555918A CN 112555918 A CN112555918 A CN 112555918A CN 202011258487 A CN202011258487 A CN 202011258487A CN 112555918 A CN112555918 A CN 112555918A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The present invention relates to a gas range, a fire control method and a computer-readable storage medium, the gas range including a controller, the fire control method including the steps of: the controller reads the navigation menu and enters each cooking stage according to a preset sequence; the controller judges whether a temperature-time curve exists in the current cooking stage or not, if yes, the temperature of each moment in the temperature-time curve is extracted as a target temperature and is used as the input of the corresponding moment of a nonlinear tracking differentiator in an ADRC model, the actual temperature of a heated pot body on the combustion seat is obtained and is used as a controlled object, the actual temperature is used as the feedback input of an expansion state observer in the ADRC model, and the ADRC model is used for outputting the current values of the first proportional valve and the second proportional valve; therefore, the opening degrees of the first proportional valve and the second proportional valve are controlled to realize firepower control, so that the fire control requirement of the gas stove is accurately met, the resources are saved, and the running stability of the system is improved.
Description
Technical Field
The invention relates to the technical field of gas cooking, in particular to a gas stove, a fire control method and a computer readable storage medium.
Background
When cooking food with gas, the mastering of the duration and degree of heating is very important, and the gas firepower is difficult to control accurately in operation, and the industry proposes to adjust the firepower through a fire control algorithm in a gas cooker controller, such as a PID algorithm or a fuzzy control algorithm and the like. However, the PID algorithm needs to debug the corresponding parameters according to different states of the calculation model, and because the gas stove fire control system is a complex nonlinear system, it is difficult to establish an accurate mathematical model, so the PID algorithm is difficult to accurately meet the fire control requirement of the gas stove; fuzzy control algorithms also need to determine different control quantities according to different states of the system, and parameters are difficult to accurately determine. In addition, the firepower is adjusted through the fire control algorithm in the whole cooking process, the calculation process is complex, resources are saved, the stable operation of a control system is not facilitated, and the firepower is not controlled completely and the cooking fails due to the fact that a system makes mistakes.
Disclosure of Invention
Based on the above situation, the main objective of the present invention is to provide a gas stove, a fire control method and a computer readable storage medium, so as to precisely meet the fire control requirement of the gas stove, save resources and improve the stability of system operation.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a fire control method for a gas stove, the gas stove comprises a combustion base, the combustion base comprises an inner ring fire distribution cover and an outer ring fire distribution cover, the gas stove further comprises a first proportional valve connected with the inner ring fire distribution cover and a second proportional valve connected with the outer ring fire distribution cover, the gas stove further comprises a controller, an ADRC model and a plurality of navigation recipes are stored in the controller, each navigation recipe comprises a plurality of cooking stages, and at least one cooking stage has a temperature time curve for controlling fire; the control method comprises the following steps:
s10: the controller reads the navigation menu and enters each cooking stage according to the preset sequence in the navigation menu;
s20: the controller judges whether the current cooking stage has a temperature-time curve, if so, the step S30 is executed;
s30: the controller extracts the temperature of each moment in a temperature-time curve as a target temperature, the target temperature is used as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, the actual temperature of the heated pot body on the combustion seat is obtained as a controlled object, the actual temperature is used as the feedback input of an extended state observer in the ADRC model, and the ADRC model is used for outputting the current values of the first proportional valve and the second proportional valve;
s40: and the controller adjusts the input currents of the first proportional valve and the second proportional valve according to the current value output by the ADRC model so as to control the opening degrees of the first proportional valve and the second proportional valve to realize firepower control, and the change of the actual temperature along with time follows the temperature-time curve.
Optionally, the fire control method further comprises the steps of:
s50: when the actual temperature reaches the temperature of the preset food material throwing node, judging whether the food material throwing action is executed, if so, executing step S60;
s60: refreshing data of a temperature-time curve, taking an actual food material feeding node as a new time starting point, taking the temperature at each moment after the food material feeding node preset in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an expansion state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model; and then step S40 is executed.
Optionally, the step S50 further includes: when the actual temperature reaches the temperature of the preset food material throwing node, the controller sends a prompt signal for reminding a user to throw food materials or sends a control signal for controlling the automatic material throwing device to throw the food materials, and judges whether the food material throwing action is executed or not after first preset time, if yes, the step S60 is executed, and if not, the step S70 is executed;
s70: closing the second proportional valve, adjusting the first proportional valve to be the minimum current, continuing waiting for a second preset time, and closing the first proportional valve and simultaneously ending the current navigation menu if the food material throwing action is not executed within the second preset time; and if the food material throwing action is finished within the second preset time, returning to the step S60.
Optionally, in the step S50, when the actual temperature reaches the temperature of the food material feeding node preset for the food material, the prompt signal sent by the controller to remind the user to feed the food material is a voice prompt message.
Optionally, the controller obtains the actual temperature measured by a thermocouple arranged at the bottom of the heated pot body on the combustion seat in a wireless communication manner.
Optionally, the step S60 includes: s61: judging whether the difference value between the type of the actually-thrown food material and the type in the navigation menu is within the allowable difference range of the type, if so, executing S62; if not, replacing the new navigation menu and returning to S10;
s62: judging whether the difference value between the weight of the actual food material input and the weight in the navigation menu is within the weight allowable difference range, if so, refreshing data of a temperature-time curve, taking the actual food material input node as a new time starting point, taking the temperature at each moment after the food material input node preset in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on the combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model; if not, the navigation menu is replaced with a new one, and the process returns to S10.
In a second aspect, the present invention provides a computer-readable storage medium having stored thereon an executable program which, when executed, implements the control method as above.
In a third aspect, the invention provides a gas stove, which comprises a combustion base, wherein the combustion base comprises an inner ring fire distribution cover and an outer ring fire distribution cover, and the gas stove further comprises a first proportional valve connected with the inner ring fire distribution cover and a second proportional valve connected with the outer ring fire distribution cover;
the gas stove further comprises a controller, wherein an ADRC model and a plurality of navigation recipes are stored in the controller, each navigation recipe comprises a plurality of cooking stages, and at least one cooking stage is provided with a temperature-time curve for controlling firepower; the controller is configured to:
reading a navigation menu, and entering each cooking stage according to a preset sequence in the navigation menu;
judging whether a temperature-time curve exists in the current cooking stage or not, extracting the temperature at each moment in the temperature-time curve as a target temperature under the condition that the judgment result is yes, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by utilizing the ADRC model; and the number of the first and second groups,
and adjusting the input currents of the first proportional valve and the second proportional valve according to the current value output by the ADRC model so as to control the opening degrees of the first proportional valve and the second proportional valve to realize fire power control, so that the change of the actual temperature along with time follows the temperature-time curve.
Optionally, the controller is further configured to:
when the actual temperature reaches the temperature of a preset food material feeding node, judging whether the food material feeding action is executed, and if so, refreshing data of a temperature-time curve, taking the actual food material feeding node as a new time starting point, taking the temperature at each moment after the preset food material feeding node in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model.
Optionally, the controller is further configured to:
when the actual temperature reaches the temperature of the preset food material throwing node, the controller sends a prompt signal for reminding a user to throw food materials or sends a control signal for controlling the automatic food material throwing device to throw food materials, whether the food material throwing action is executed or not is judged after first preset time, if the judgment result is negative, the second proportional valve is closed, the first proportional valve is adjusted to be the minimum current, after second preset time is waited, whether the food material throwing action is executed or not is continuously judged, and if the judgment result is still negative, the first proportional valve is closed, and the current navigation menu is ended.
Optionally, the controller is further configured to:
judging whether the difference value between the type of the actually-thrown food material and the type in the navigation menu is within the allowable difference range of the type, if so, further judging whether the difference value between the weight of the actually-thrown food material and the weight in the navigation menu is within the allowable difference range of the weight, and if so, adjusting the firepower.
According to the control method, the firepower control of the gas stove is realized by adopting the ADRC algorithm, the establishment of an accurate mathematical model is not depended on, the parameters are easy to determine, the uncertainty and the unknown external disturbance of the model of the system are considered, the control problem of a nonlinear system can be well solved, and the firepower control is accurate; according to the control method, the fire control calculation is only carried out on the cooking stage with the temperature-time curve, the control process is simple, the resources are obviously saved, the stable operation of the system is facilitated, and the cooking success rate is improved.
Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.
Drawings
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a flowchart of a method for controlling the heating power of a gas range according to an embodiment of the present invention;
fig. 2 is a graph comparing ideal and actual temperature time curves provided by an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the nature of the present invention, well-known methods, procedures, and components have not been described in detail.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention provides a fire control method of a gas stove, wherein the gas stove comprises a combustion base, the combustion base comprises an inner ring fire distribution cover and an outer ring fire distribution cover, the gas stove further comprises a first proportional valve connected with the inner ring fire distribution cover and a second proportional valve connected with the outer ring fire distribution cover, the gas stove further comprises a controller, an ADRC model and a plurality of navigation recipes are stored in the controller, each navigation recipe comprises a plurality of cooking stages, and at least one cooking stage is provided with a temperature-time curve for controlling fire; the control method comprises the following steps:
s10: the controller reads the navigation menu and enters each cooking stage according to the preset sequence in the navigation menu;
s20: the controller judges whether the current cooking stage has a temperature-time curve, if so, the step S30 is executed;
s30: the controller extracts the temperature of each moment in the temperature-time curve as a target temperature, the target temperature is used as the input of the corresponding moment of the nonlinear tracking differentiator in the ADRC model, the actual temperature of the heated pot body on the combustion seat is obtained as a controlled object, the actual temperature is used as the feedback input of an extended state observer in the ADRC model, and the ADRC model is used for outputting the current values of the first proportional valve and the second proportional valve;
s40: the controller adjusts input currents of the first proportional valve and the second proportional valve according to a current value output by the ADRC model so as to control the opening degrees of the first proportional valve and the second proportional valve, thereby realizing firepower control and enabling the change of the actual temperature along with time to follow a temperature-time curve.
The temperature-time curve described above is directed to an abstract temperature-time correspondence, rather than a true existing curve. In practical applications, the corresponding relationship between temperature and time may be expressed in the form of a real curve, a table, or a function, where the real curve is a curve formed by the temperature changing with time, the real table is a table formed by each time and the corresponding temperature, and the real function is a function of the temperature changing with time. Of course, the temperature-time correspondence may also take other forms.
The ADRC (Active Disturbance Rejection Control) algorithm includes a nonlinear tracking differentiator TD, a nonlinear state error feedback Control law NLSEF, and an extended state observer ESO. Firstly, TD is used for realizing fast overshoot-free tracking of system input signals and providing good differential signals for the system input signals; secondly, the ADRC algorithm takes the uncertainty of a model of the system as the internal disturbance of the system, the uncertainty and the external disturbance of the system are regarded as the disturbance of the whole system, the comprehensive action of the internal disturbance and the external disturbance, namely the total disturbance of the system, is directly monitored without distinguishing the internal disturbance and the external disturbance, the state and the disturbance of the system are respectively estimated through an ESO (electronic stability and engineering automation) and the ESO converts a nonlinear uncertain object with unknown external disturbance into an 'integrator series type' by using NLSEF (non-linear fuzzy inference filter), and the ADRC algorithm is a structure for realizing feedback linearization on the nonlinear uncertain object; and finally, the ADRC utilizes NLSEF to obtain the compensation effect of the disturbance component and obtain the output of the controller. The control method does not depend on a specific mathematical model for describing an object and a specific form of external disturbance, so that the control method can compensate the disturbance of internal parameters and the model of a system and can inhibit the external disturbance, and the ADRC controller is called as an active disturbance rejection controller. The specific structure of the active disturbance rejection controller is as follows: and respectively processing the reference input and the system output by using TD and ESO, and selecting a proper nonlinear combination of state errors to obtain NLSEF of the system, thereby obtaining the output quantity of the controller.
According to the fire control method of the gas stove, the ADRC algorithm is adopted to realize the fire control of the gas stove, the establishment of an accurate mathematical model is not relied on, the parameters are easy to determine, the uncertainty and the unknown external disturbance of the model of the system are considered, the control problem of a nonlinear system can be well solved, and compared with the adoption of other algorithms such as a PID algorithm or a fuzzy control algorithm, the fire control can be realized more simply, conveniently and accurately. In addition, the target temperature in the temperature-time curve is used as the input value of the nonlinear tracker in the ADRC model at the corresponding moment, the actual temperature value of the pot body heated on the combustion seat is used as the feedback input value of the extended state observer, the ADRC model is used for outputting the current values of the first proportional valve and the second proportional valve, the objective accuracy of the input parameters of the ADRC model is guaranteed through the selection of the input value, the feedback input value and the output value, and the output value can be used for controlling the opening of the proportional valve, so that the accurate control of the fire power is realized.
The first proportional valve and the second proportional valve may control the opening degrees of the first proportional valve and the second proportional valve by the current applied to the control ends thereof, and if the control ends thereof input the maximum current, the opening degrees of the first proportional valve and the second proportional valve are the maximum opening degrees, at which the gas supply amount is the maximum and the gas range fire is the maximum, and the control ends input the minimum current, and the opening degrees thereof are the minimum, at which the gas range fire is the minimum, and corresponding currents may be applied according to other opening degrees.
When the temperature-time correspondence is adopted to adjust the firepower in the whole cooking stage, the temperature at each moment in the temperature-time correspondence needs to be paid attention to in the whole process, so that the complexity of the whole control method is inevitably increased, and the working efficiency of the cooking system is reduced. The invention considers that in some cooking stages, although the temperature-time corresponding relation is still followed in the stage, the firepower determined by the corresponding relation is basically constant, namely constant firepower heating such as big fire heating and small fire heating is adopted, in order to improve the control efficiency, simplify the calculation complexity and improve the system stability, the invention does not set a temperature-time curve when the cooking stage is the constant firepower heating, and does not need to focus on the temperature of each time in the temperature-time corresponding relation in the whole cooking process to carry out firepower control calculation by an ADRC algorithm.
Therefore, in the above method, the temperature-time curve is not set in the constant heating power stage (for example, in the cooking stage in which water is boiled with a continuous strong fire or in the stage in which the minimum fire after boiling soup in stewing is maintained in the boiling state), and the time-temperature curve is set only in the cooking stage in which heating power needs to be changed. In the specific operation, whether a temperature-time curve exists in the current cooking stage is judged firstly, if yes, the firepower is adjusted in real time according to the temperature-time corresponding relation, if not, namely, the cooking stage is constant firepower, after the currents of the first proportional valve and the second proportional valve are adjusted at the initial time of the cooking stage, the opening degrees of the two proportional valves are fixed, the total amount of gas capable of being output is fixed, the firepower is constant, the firepower is not adjusted at any time in the following process, only the heating time or the reached actual temperature is concerned, and therefore the whole control process can be simplified, the occupation of system resources is reduced, and the system stability is improved.
The control method of the invention can better ensure the temperature change in the whole heating process of the food, improve the taste of the food and effectively ensure the success rate of cooking. In the invention, the control of the firepower is not simply limited to big fire, middle fire and small fire, but the first proportional valve and the second proportional valve are independently controlled, so that the inner ring firepower and the outer ring firepower can be independently adjusted, namely, the inner ring firepower and the outer ring firepower are not influenced mutually, and can be combined according to requirements, thereby realizing the accurate control of the firepower through the combination of the inner ring firepower and the outer ring firepower, achieving the optimal firepower configuration at each moment, further leading the change relation of the actual temperature along with the time to better track the temperature-time corresponding relation through the accurate adjustment of the firepower, improving the accurate control of the heating process of the food at each moment and improving the taste of the food.
Optionally, the fire control method further includes the steps of:
s50: when the actual temperature reaches the temperature of the preset food material throwing node, judging whether the food material throwing action is executed, if so, executing step S60;
s60: refreshing data of a temperature-time curve, taking an actual food material feeding node as a new time starting point, taking the temperature at each moment after the food material feeding node is preset in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an expansion state observer in the ADRC model, and outputting the respective current values of a first proportional valve and a second proportional valve by using the ADRC model; and then step S40 is executed.
Specifically, in the process of adjusting the gas stove fire power according to the temperature-time correspondence, since the actual temperature information in cooking obtained by the temperature sensor is received by the controller from the acquisition, there is a delay inevitably, and therefore, the actual temperature at the time point corresponding to the food material throwing action does not reach the target temperature in the temperature-time correspondence corresponding to the time point, at this time, the actual temperature in the pan may be insufficient when the food material throwing action is performed, and the subsequent actual temperature tracks the temperature-time correspondence, and the comparison is difficult when the temperature-time correspondence is followed, for example, in the embodiment shown in fig. 2, the temperature-time correspondence is expressed as a temperature-time curve, the solid line ABCD represents a temperature-time curve, the dotted line represents an ideal actual temperature-time curve, the dotted line represents a possible actual temperature-time curve, the point B is set for throwing the food material, and the food, the actual temperature at the time corresponding to the point B may be B1, if the food material is added at this time, the target temperature in the subsequent temperature-time curve BC will suddenly drop, and the actual temperature in the pan does not reach the target temperature B at this time, and because the food material is added, the actual temperature will be lower, but the fire power will be reduced at this time according to the temperature-time curve, so that the BC section will be excessively cooled, and the temperature rise in the subsequent CD section is weak. In order to solve the problem, the invention adjusts the firepower according to the temperature-time corresponding relation, and simultaneously executes the food material throwing action by taking the target temperature as the basis, namely when the food material is thrown, the cooking action is executed only when the actual temperature in the pot reaches the target temperature, thereby avoiding that the temperature in the pot continues to follow the temperature-time corresponding relation to cause temperature rise and weakness and influence the heating degree of the food material at each moment when the temperature in the pot does not reach the target temperature. And when the cooking action is finished, refreshing the corresponding temperature-time relationship after the cooking action in the stage, or directly switching to the next cooking stage with independent time, that is, as shown in fig. 2, after the food material is put in at the point B, refreshing the BCD section, namely, the starting time of the BCD section does not directly continue the ending time of the section AB, but the moment after the food material is actually put in is taken as the starting time of the subsequent BCD section, so that the temperature at the point B can be ensured to be reached certainly, the subsequent BCD section can not be influenced to continuously adjust the firepower according to the temperature-time corresponding relationship, the actual temperature is enabled to be better close to the ideal actual temperature-time curve, and the food taste is improved.
In order to enable the delayed actual temperature in the cooking to reach the target temperature, for example, the actual temperature in the pot in the time-temperature curve can reach the target temperature B, after the time corresponding to the target temperature B passes, the actual temperature in the cooking is not immediately cooled according to the requirement of the curve BC section, but the heating time is continuously prolonged, the firepower at the point B is kept for heating for a fixed time, if the cooking is stir-frying, the heating is prolonged for 15 seconds, if the cooking is stewing, boiling or stewing, the heating is prolonged for 30 seconds, the actual temperature in the pot can be guaranteed to reach the target temperature B by prolonging the fixed time for heating, and at this time, the food material is thrown or the user is reminded to throw in the food material.
Optionally, step S50 further includes: when the actual temperature reaches the temperature of the preset food material throwing node, the controller sends a prompt signal for reminding a user to throw food materials or sends a control signal for controlling the automatic material throwing device to throw the food materials, and judges whether the food material throwing action is executed or not after first preset time, if yes, the step S60 is executed, and if not, the step S70 is executed;
s70: closing the second proportional valve, adjusting the first proportional valve to be the minimum current, continuing waiting for a second preset time, and closing the first proportional valve and simultaneously ending the current navigation menu if the food material throwing action is not executed within the second preset time; if the food material throwing action is completed within the second preset time, the process returns to step S60. Optionally, in step S50, when the actual temperature reaches the temperature of the food material feeding node preset for the food material, the prompt signal sent by the controller to remind the user to feed the food material is a voice prompt message.
In the present invention, it is also considered that, even when the actual temperature reaches the temperature of the preset food material throwing node, the food material may not be timely thrown, so in step S50, when the actual temperature reaches the temperature of the preset food material throwing node, it is required to first determine whether the food material throwing action is executed, and if so, the step S60 is executed. If the food materials are not timely thrown, at the moment, the firepower is set to be small fire, namely minimum firepower, after waiting for second preset time, the food material throwing action is not executed, and the first proportional valve is closed and the current navigation menu is ended; and if the food material throwing action is finished within the second preset time, returning to the step S60.
In order to avoid that when the actual temperature reaches the target temperature corresponding to the food material throwing action, the cooking system or the user does not execute the action, which results in a cooking failure, in a preferred embodiment of the present invention, when the actual temperature reaches the temperature of the food material throwing node, the controller sends a voice prompt message for executing the food material throwing action. The reminding unit is arranged in the controller, the reminding unit can be a buzzer, a loudspeaker and other devices, and the voice reminding information can be a monotonous ring or a specific language, such as food material throwing.
Optionally, the controller obtains the actual temperature measured by a thermocouple arranged at the bottom of the heated pot body on the combustion seat in a wireless communication mode.
Specifically, the thermocouple is used as a temperature sensor, the temperature parameter at the bottom of the pot body is transmitted to the controller of the gas stove in a wireless transmission mode, wiring specially performed for transmitting the temperature parameter between the pot body and the gas stove is avoided, the structure of a cooking system is simplified, and the use is convenient.
Optionally, step S60 includes: s61: judging whether the difference value between the type of the actually-thrown food material and the type in the navigation menu is within the allowable difference range of the type, if so, executing S62; if not, replacing the new navigation menu and returning to S10;
s62: judging whether the difference value between the weight of the actual food material input and the weight in the navigation menu is within the weight allowable difference range, if so, refreshing data of a temperature-time curve, taking the actual food material input node as a new time starting point, taking the temperature at each moment after the food material input node preset in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on the combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model; if not, the navigation menu is replaced with a new one, and the process returns to S10.
Considering that the actually-thrown food materials may not strictly follow the navigation menu, the above operation is performed, and because a sufficient number of navigation menus are stored in the controller, under the condition that the difference between the actually-thrown food materials and the set value exceeds the allowable range, the actually-thrown food materials can be matched in a mode of replacing more appropriate navigation menus, and the cooking success rate is guaranteed. For example, when cooking green pepper fried meat, if the food materials are added, not only the green pepper and the meat, but also the red pepper raw material which is not contained in the originally selected navigation recipe is added, and the difference of the added red pepper is not the difference range allowed by the type, a more matched navigation recipe needs to be searched according to the actual three main raw materials of the green pepper, the red pepper and the meat, and the fire power control in the subsequent cooking is performed according to the more matched navigation recipe.
Specifically, the type of the actually input food material is judged by arranging a camera with a detection function at a corresponding position of the gas stove, the controller judges whether the type of the actually input food material and the type difference in the navigation menu are within an allowable range, if not, the controller automatically matches a more adaptive navigation menu according to the type of the actually input food material, and performs subsequent fire control according to a newly matched navigation menu; the weight of the input food material is judged by a weight sensor arranged at a proper position, and the controller judges whether the weight of the input food material is within a difference allowable range.
Furthermore, the present invention also provides a computer-readable storage medium having stored thereon an executable program which, when executed, implements the control method as described above.
Moreover, the invention also provides a gas stove which comprises a combustion base, wherein the combustion base comprises an inner ring fire distribution cover and an outer ring fire distribution cover, and the gas stove also comprises a first proportional valve connected with the inner ring fire distribution cover and a second proportional valve connected with the outer ring fire distribution cover;
the gas stove also comprises a controller, wherein an ADRC model and a plurality of navigation recipes are stored in the controller, each navigation recipe comprises a plurality of cooking stages, and at least one cooking stage is provided with a temperature-time curve for controlling firepower; the controller is used for:
reading the navigation menu, and entering each cooking stage according to the preset sequence in the navigation menu;
judging whether a temperature-time curve exists in the current cooking stage or not, extracting the temperature at each moment in the temperature-time curve as a target temperature under the condition that the judgment result is yes, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model; and the number of the first and second groups,
and adjusting input currents of the first proportional valve and the second proportional valve according to a current value output by the ADRC model so as to control the opening degrees of the first proportional valve and the second proportional valve, thereby realizing firepower control and enabling the change of the actual temperature along with time to follow a temperature-time curve.
Optionally, the controller is further configured to: and when the actual temperature reaches the temperature of the preset food material feeding node, judging whether the food material feeding action is executed, and under the condition that the judgment result is yes, refreshing data of a temperature-time curve, taking the actual food material feeding node as a new time starting point, taking the temperature at each moment after the preset food material feeding node in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model.
Optionally, the controller is further configured to: when the actual temperature reaches the temperature of the preset food material throwing node, the controller sends a prompt signal for reminding a user to throw food materials or sends a control signal for controlling the automatic food material throwing device to throw food materials, whether the food material throwing action is executed or not is judged after first preset time, if the judgment result is negative, the second proportional valve is closed, the first proportional valve is adjusted to be the minimum current, after the second preset time is waited, whether the food material throwing action is executed or not is continuously judged, and if the judgment result is still negative, the first proportional valve is closed, and the current navigation menu is ended.
Optionally, the controller is further configured to: judging whether the difference value between the type of the actually-thrown food material and the type in the navigation menu is within the allowable difference range of the type, if so, further judging whether the difference value between the weight of the actually-thrown food material and the weight in the navigation menu is within the allowable difference range of the weight, and if so, adjusting the firepower.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.
Claims (11)
1. A gas stove fire control method is disclosed, the gas stove comprises a combustion base, the combustion base comprises an inner ring fire distribution cover and an outer ring fire distribution cover, the gas stove is characterized by further comprising a first proportional valve connected with the inner ring fire distribution cover and a second proportional valve connected with the outer ring fire distribution cover, the gas stove further comprises a controller, an ADRC model and a plurality of navigation recipes are stored in the controller, each navigation recipe comprises a plurality of cooking stages, and at least one cooking stage is provided with a temperature-time curve for controlling fire; the control method comprises the following steps:
s10: the controller reads the navigation menu and enters each cooking stage according to the preset sequence in the navigation menu;
s20: the controller judges whether the current cooking stage has a temperature-time curve, if so, the step S30 is executed;
s30: the controller extracts the temperature of each moment in a temperature-time curve as a target temperature, the target temperature is used as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, the actual temperature of the heated pot body on the combustion seat is obtained as a controlled object, the actual temperature is used as the feedback input of an extended state observer in the ADRC model, and the ADRC model is used for outputting the current values of the first proportional valve and the second proportional valve;
s40: and the controller adjusts the input currents of the first proportional valve and the second proportional valve according to the current value output by the ADRC model so as to control the opening degrees of the first proportional valve and the second proportional valve to realize firepower control, and the change of the actual temperature along with time follows the temperature-time curve.
2. The fire control method according to claim 1, characterized by further comprising the steps of:
s50: when the actual temperature reaches the temperature of the preset food material throwing node, judging whether the food material throwing action is executed, if so, executing step S60;
s60: refreshing data of a temperature-time curve, taking an actual food material feeding node as a new time starting point, taking the temperature at each moment after the food material feeding node preset in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an expansion state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model; and then step S40 is executed.
3. The fire control method according to claim 2, wherein step S50 further includes: when the actual temperature reaches the temperature of the preset food material throwing node, the controller sends a prompt signal for reminding a user to throw food materials or sends a control signal for controlling the automatic material throwing device to throw the food materials, and judges whether the food material throwing action is executed or not after first preset time, if yes, the step S60 is executed, and if not, the step S70 is executed;
s70: closing the second proportional valve, adjusting the first proportional valve to be the minimum current, continuing waiting for a second preset time, and closing the first proportional valve and simultaneously ending the current navigation menu if the food material throwing action is not executed within the second preset time; and if the food material throwing action is finished within the second preset time, returning to the step S60.
4. The fire control method according to claim 3, wherein in the step S50, when the actual temperature reaches the temperature of the food material feeding node preset by the food material, the prompt signal sent by the controller to remind the user to feed the food material is voice prompt information.
5. The fire control method according to any one of claims 1 to 4, wherein the controller obtains the actual temperature measured by a thermocouple provided at a bottom of a pot heated on the combustion base in a wireless communication manner.
6. The fire control method according to claim 2, wherein the step S60 includes: s61: judging whether the difference value between the type of the actually-thrown food material and the type in the navigation menu is within the allowable difference range of the type, if so, executing S62; if not, replacing the new navigation menu and returning to S10;
s62: judging whether the difference value between the weight of the actual food material input and the weight in the navigation menu is within the weight allowable difference range, if so, refreshing data of a temperature-time curve, taking the actual food material input node as a new time starting point, taking the temperature at each moment after the food material input node preset in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on the combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model; if not, the navigation menu is replaced with a new one, and the process returns to S10.
7. A computer-readable storage medium having stored thereon an executable program which, when executed, implements the control method of any one of claims 1-6.
8. A gas stove comprises a combustion base, the combustion base comprises an inner ring fire dividing cover and an outer ring fire dividing cover, and is characterized in that,
the gas stove also comprises a first proportional valve connected with the inner ring fire distributing cover and a second proportional valve connected with the outer ring fire distributing cover;
the gas stove further comprises a controller, wherein an ADRC model and a plurality of navigation recipes are stored in the controller, each navigation recipe comprises a plurality of cooking stages, and at least one cooking stage is provided with a temperature-time curve for controlling firepower; the controller is configured to:
reading a navigation menu, and entering each cooking stage according to a preset sequence in the navigation menu;
judging whether a temperature-time curve exists in the current cooking stage or not, extracting the temperature at each moment in the temperature-time curve as a target temperature under the condition that the judgment result is yes, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by utilizing the ADRC model; and the number of the first and second groups,
and adjusting the input currents of the first proportional valve and the second proportional valve according to the current value output by the ADRC model so as to control the opening degrees of the first proportional valve and the second proportional valve to realize fire power control, so that the change of the actual temperature along with time follows the temperature-time curve.
9. The gas range of claim 8, wherein the controller is further configured to:
when the actual temperature reaches the temperature of a preset food material feeding node, judging whether the food material feeding action is executed, and if so, refreshing data of a temperature-time curve, taking the actual food material feeding node as a new time starting point, taking the temperature at each moment after the preset food material feeding node in the temperature-time curve as a target temperature, taking the target temperature as the input of a nonlinear tracking differentiator in an ADRC model at the corresponding moment, acquiring the actual temperature of a heated pot body on a combustion seat as a controlled object, taking the actual temperature as the feedback input of an extended state observer in the ADRC model, and outputting the current values of the first proportional valve and the second proportional valve by using the ADRC model.
10. The gas range of claim 9, wherein the controller is further configured to:
when the actual temperature reaches the temperature of the preset food material throwing node, the controller sends a prompt signal for reminding a user to throw food materials or sends a control signal for controlling the automatic food material throwing device to throw food materials, whether the food material throwing action is executed or not is judged after first preset time, if the judgment result is negative, the second proportional valve is closed, the first proportional valve is adjusted to be the minimum current, after second preset time is waited, whether the food material throwing action is executed or not is continuously judged, and if the judgment result is still negative, the first proportional valve is closed, and the current navigation menu is ended.
11. The gas range of claim 9, wherein the controller is further configured to:
judging whether the difference value between the type of the actually-thrown food material and the type in the navigation menu is within the allowable difference range of the type, if so, further judging whether the difference value between the weight of the actually-thrown food material and the weight in the navigation menu is within the allowable difference range of the weight, and if so, adjusting the firepower.
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