CN106211393B - Heating power control method and device of electromagnetic heating system - Google Patents
Heating power control method and device of electromagnetic heating system Download PDFInfo
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- CN106211393B CN106211393B CN201510217248.8A CN201510217248A CN106211393B CN 106211393 B CN106211393 B CN 106211393B CN 201510217248 A CN201510217248 A CN 201510217248A CN 106211393 B CN106211393 B CN 106211393B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
Abstract
The invention discloses a heating power control method and a device of an electromagnetic heating system, wherein the method comprises the following steps: acquiring target power of the electromagnetic heating system, and continuously detecting feedback power of the electromagnetic heating system; when the current feedback power of the electromagnetic heating system is larger than the target power, judging whether the feedback power of the electromagnetic heating system is in a descending stage according to the current feedback power and the last feedback power, and if not, reducing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power; and when the current feedback power is less than or equal to the target power, judging whether the feedback power of the electromagnetic heating system is in a rising stage or not according to the current feedback power and the last feedback power, and if not, increasing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power. The method can realize accurate control of the heating power of the electromagnetic heating system and ensure the safe and reliable work of the electromagnetic heating system.
Description
Technical Field
The present invention relates to the field of electromagnetic heating technologies, and in particular, to a heating power control method for an electromagnetic heating system and a heating power control device for an electromagnetic heating system.
Background
In the related art, an electromagnetic heating system, such as an induction cooker, usually determines how much power should be compensated by a power difference between feedback power and target power, but there is a time delay between the feedback power and actual power, so that the actual power is reached, and the feedback power is not reached due to the time delay.
Therefore, the related art has a problem that power overshoot is easily generated due to a time difference between the feedback power and the actual power, and a certain safety hazard is caused in a serious situation.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a heating power control method for an electromagnetic heating system, which can accurately control the heating power of the electromagnetic heating system and ensure that the electromagnetic heating system works safely and reliably.
Another object of the present invention is to provide a heating power control device of an electromagnetic heating system.
In order to achieve the above object, an embodiment of the present invention provides a heating power control method for an electromagnetic heating system, including the following steps: acquiring target power of the electromagnetic heating system, and continuously detecting feedback power of the electromagnetic heating system; when the current feedback power of the electromagnetic heating system is larger than the target power, judging whether the feedback power of the electromagnetic heating system is in a descending stage according to the current feedback power and the last feedback power, and if not, reducing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power; and when the current feedback power of the electromagnetic heating system is smaller than or equal to the target power, judging whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power, and if not, increasing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power.
According to the heating power control method of the electromagnetic heating system, whether the feedback power of the electromagnetic heating system is in the rising stage or the falling stage or not is monitored, and when the feedback power of the electromagnetic heating system is not in the rising stage or the falling stage, the feedback power of the electromagnetic heating system tends to be stable, the heating power of the electromagnetic heating system is adjusted, so that the heating power of the electromagnetic heating system can be accurately controlled, the problem of power overshoot can be avoided, the situation of excessive adjustment can not occur, and the safe and reliable work of the electromagnetic heating system is guaranteed.
According to an embodiment of the present invention, judging whether the feedback power of the electromagnetic heating system is in a decreasing stage according to the current feedback power and the last feedback power specifically includes: judging whether the current feedback power is smaller than the last feedback power; if so, judging that the feedback power of the electromagnetic heating system is in the descending stage.
And when the feedback power of the electromagnetic heating system is in the descending stage, keeping the heating power of the electromagnetic heating system unchanged.
According to an embodiment of the present invention, judging whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power specifically includes: judging whether the current feedback power is larger than the last feedback power; and if so, judging that the feedback power of the electromagnetic heating system is in the rising stage.
And when the feedback power of the electromagnetic heating system is in the rising phase, keeping the heating power of the electromagnetic heating system unchanged.
In order to achieve the above object, a heating power control device of an electromagnetic heating system according to another embodiment of the present invention includes: the acquisition module is used for acquiring the target power of the electromagnetic heating system; the detection module is used for continuously detecting the feedback power of the electromagnetic heating system; the control module is respectively connected with the acquisition module and the detection module, when the current feedback power of the electromagnetic heating system is greater than the target power, the control module judges whether the feedback power of the electromagnetic heating system is in a descending stage according to the current feedback power and the last feedback power, and if not, the control module reduces the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power; and when the current feedback power of the electromagnetic heating system is smaller than or equal to the target power, the control module judges whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power, and if not, the control module increases the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power.
According to the heating power control device of the electromagnetic heating system, whether the feedback power of the electromagnetic heating system is in the rising stage or the falling stage or not is monitored, and when the feedback power of the electromagnetic heating system is not in the rising stage or the falling stage, the feedback power of the electromagnetic heating system tends to be stable, the heating power of the electromagnetic heating system is adjusted, so that the heating power of the electromagnetic heating system can be accurately controlled, the problem of power overshoot can be avoided, the situation of excessive adjustment can not occur, and the safe and reliable work of the electromagnetic heating system is guaranteed.
According to an embodiment of the present invention, the control module specifically determines whether the feedback power of the electromagnetic heating system is in a decreasing phase by determining whether the current feedback power is smaller than the last feedback power, wherein when the current feedback power is smaller than the last feedback power, the control module determines that the feedback power of the electromagnetic heating system is in the decreasing phase.
And when the feedback power of the electromagnetic heating system is in the descending stage, the control module keeps the heating power of the electromagnetic heating system unchanged.
According to an embodiment of the present invention, the control module specifically determines whether the feedback power of the electromagnetic heating system is in a rising stage by determining whether the current feedback power is greater than the last feedback power, wherein when the current feedback power is greater than the last feedback power, the control module determines that the feedback power of the electromagnetic heating system is in the rising stage.
And when the feedback power of the electromagnetic heating system is in the rising phase, the control module keeps the heating power of the electromagnetic heating system unchanged.
Drawings
Fig. 1 is a flowchart of a heating power control method of an electromagnetic heating system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a heating power control method of an electromagnetic heating system according to an embodiment of the present invention; and
fig. 3 is a block schematic diagram of a heating power control apparatus of an electromagnetic heating system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A heating power control method of an electromagnetic heating system and a heating power control apparatus of an electromagnetic heating system according to an embodiment of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a heating power control method of an electromagnetic heating system according to an embodiment of the present invention. As shown in fig. 1, the heating power control method of the electromagnetic heating system includes the following steps:
and S1, acquiring the target power of the electromagnetic heating system and continuously detecting the feedback power of the electromagnetic heating system.
In the embodiment of the present invention, the electromagnetic heating system may include household appliances such as an induction cooker, an electromagnetic rice cooker, an electromagnetic pressure cooker, and the like.
The continuous detection of the feedback power of the electromagnetic heating system may be a real-time detection of the feedback power of the electromagnetic heating system, or may be a detection of the feedback power of the electromagnetic heating system every other detection period.
S2, when the current feedback power of the electromagnetic heating system is larger than the target power, judging whether the feedback power of the electromagnetic heating system is in a descending stage according to the current feedback power and the last feedback power, and if not, reducing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power.
In step S2, according to an embodiment of the present invention, determining whether the feedback power of the electromagnetic heating system is in a decreasing phase according to the current feedback power and the last feedback power includes: judging whether the current feedback power is smaller than the last feedback power; if so, judging that the feedback power of the electromagnetic heating system is in a descending stage.
And when the feedback power of the electromagnetic heating system is in a descending stage, the heating power of the electromagnetic heating system is kept unchanged.
S3, when the current feedback power of the electromagnetic heating system is smaller than or equal to the target power, judging whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power, and if not, increasing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power.
It should be noted that, in the embodiment of the present invention, when the heating power of the electromagnetic heating system is decreased or increased according to the difference between the current feedback power and the target power, the specific adjusting mode is that the larger the difference value is, the more the heating power of the electromagnetic heating system is adjusted, for example, when the heating power of the electromagnetic heating system is adjusted according to the difference, the target power is 1500 watts, but the feedback power is 500 watts, and the difference value is larger, the amplitude of the regulation is larger, if the difference is small, the adjusting amplitude is small, so that the heating power of the electromagnetic heating system can be quickly adjusted to reach the target power, the problem that in the related technology, no matter the difference is large, the power is changed slowly due to the fact that a certain power is fixedly increased only when the difference is smaller than the target power and the power is fixedly reduced when the difference is larger than the target power is solved, and the problem that overshoot is easy to occur due to the fact that the fixed power is set to be large can be solved. In addition, the heating power control method of the electromagnetic heating system provided by the embodiment of the invention is simple to implement and reliable in operation, and does not occupy excessive resources of the system.
According to an embodiment of the present invention, in step S3, determining whether the feedback power of the electromagnetic heating system is in the rising phase according to the current feedback power and the last feedback power includes: judging whether the current feedback power is larger than the last feedback power; and if so, judging that the feedback power of the electromagnetic heating system is in a rising stage.
And when the feedback power of the electromagnetic heating system is in a rising stage, the heating power of the electromagnetic heating system is kept unchanged.
That is to say, in the embodiment of the present invention, when the heating power of the electromagnetic heating system is adjusted, whether the feedback power is still in the rising phase or the falling phase is monitored by comparing the current feedback power with the last feedback power, and if so, the heating power of the electromagnetic heating system is not adjusted; if the feedback power is not in the rising stage or the falling stage, the feedback power tends to be stable in a certain time range, and then the heating power of the electromagnetic heating system is adjusted, so that power overshoot is avoided, the situation that the power is excessively reduced is avoided, and the problem that the target power floats up and down in a long time is avoided.
Specifically, according to an embodiment of the present invention, as shown in fig. 2, the heating power control method of the electromagnetic heating system includes the following steps:
s201, start.
S202, judging whether the current feedback power is larger than the target power. If yes, go to step S203; if not, step S205 is performed.
And S203, judging whether the current feedback power is smaller than the last feedback power. If so, ending the process, and not adjusting the heating power of the electromagnetic heating system; if not, step S204 is performed.
S204, reducing the heating power of the electromagnetic heating system according to the difference value between the current feedback power and the target power, and then ending the process.
And S205, judging whether the current feedback power is larger than the last feedback power. If so, ending the process, and not adjusting the heating power of the electromagnetic heating system; if not, step S206 is performed.
S206, increasing the heating power of the electromagnetic heating system according to the difference value between the current feedback power and the target power, and then ending the process.
According to the heating power control method of the electromagnetic heating system, whether the feedback power of the electromagnetic heating system is in the rising stage or the falling stage or not is monitored, and when the feedback power of the electromagnetic heating system is not in the rising stage or the falling stage, the feedback power of the electromagnetic heating system tends to be stable, the heating power of the electromagnetic heating system is adjusted, so that the heating power of the electromagnetic heating system can be accurately controlled, the problem of power overshoot can be avoided, the situation of excessive adjustment can not occur, and the safe and reliable work of the electromagnetic heating system is guaranteed.
Fig. 3 is a block schematic diagram of a heating power control apparatus of an electromagnetic heating system according to an embodiment of the present invention. As shown in fig. 3, the heating power control device of the electromagnetic heating system includes an acquisition module 10, a detection module 20, and a control module 30.
The obtaining module 10 is used for obtaining a target power of the electromagnetic heating system, and the detecting module 20 is used for continuously detecting a feedback power of the electromagnetic heating system. The detecting module 20 continuously detects the feedback power of the electromagnetic heating system, and may detect the feedback power of the electromagnetic heating system in real time, or detect the feedback power of the electromagnetic heating system every other detecting period.
As shown in fig. 3, the control module 30 is connected to the obtaining module 10 and the detecting module 20, respectively, wherein when the current feedback power of the electromagnetic heating system is greater than the target power, the control module 30 determines whether the feedback power of the electromagnetic heating system is in a decreasing stage according to the current feedback power and the last feedback power, and if not, the control module 30 decreases the heating power of the electromagnetic heating system according to a difference between the current feedback power and the target power; when the current feedback power of the electromagnetic heating system is less than or equal to the target power, the control module 30 determines whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power, and if not, the control module 30 increases the heating power of the electromagnetic heating system according to the difference value between the current feedback power and the target power.
It should be noted that, in the embodiment of the present invention, when the control module decreases or increases the heating power of the electromagnetic heating system according to the difference between the current feedback power and the target power, the specific adjustment manner is that the larger the difference is, the more the heating power of the electromagnetic heating system is adjusted, for example, when the heating power of the electromagnetic heating system is adjusted according to the difference, the target power is 1500 watts, but the feedback power is 500 watts, at this time, the difference is larger, the amplitude of the adjustment is larger, and if the difference is smaller, the amplitude of the adjustment is smaller, so that the heating power of the electromagnetic heating system can be quickly adjusted to reach the target power, and the problem that the power change is slow because a certain power is fixedly increased only if the difference is smaller than the target power and is fixedly decreased when the difference is larger than the target power in the related art is avoided, and the problem of easy overshoot due to a large fixed power setting can be avoided. In addition, the heating power control device of the electromagnetic heating system provided by the embodiment of the invention is simple to realize and reliable in operation, and does not need to occupy excessive resources of the system during operation.
According to an embodiment of the present invention, the control module 30 specifically determines whether the feedback power of the electromagnetic heating system is in a decreasing phase by determining whether the current feedback power is smaller than the last feedback power, wherein when the current feedback power is smaller than the last feedback power, the control module 30 determines that the feedback power of the electromagnetic heating system is in the decreasing phase.
And, when the feedback power of the electromagnetic heating system is in the decreasing stage, the control module 30 keeps the heating power of the electromagnetic heating system unchanged.
According to an embodiment of the present invention, the control module 30 specifically determines whether the feedback power of the electromagnetic heating system is in a rising stage by determining whether the current feedback power is greater than the last feedback power, wherein when the current feedback power is greater than the last feedback power, the control module 30 determines that the feedback power of the electromagnetic heating system is in the rising stage.
And, when the feedback power of the electromagnetic heating system is in the rising phase, the control module 30 keeps the heating power of the electromagnetic heating system unchanged.
That is to say, in the embodiment of the present invention, when the heating power of the electromagnetic heating system is adjusted, whether the feedback power is still in the rising phase or the falling phase is monitored by comparing the current feedback power with the last feedback power, and if so, the heating power of the electromagnetic heating system is not adjusted; if the feedback power is not in the rising stage or the falling stage, the feedback power tends to be stable in a certain time range, and then the heating power of the electromagnetic heating system is adjusted, so that power overshoot is avoided, the situation that the power is excessively reduced is avoided, and the problem that the target power floats up and down in a long time is avoided.
According to the heating power control device of the electromagnetic heating system, whether the feedback power of the electromagnetic heating system is in the rising stage or the falling stage or not is monitored, and when the feedback power of the electromagnetic heating system is not in the rising stage or the falling stage, the feedback power of the electromagnetic heating system tends to be stable, the heating power of the electromagnetic heating system is adjusted, so that the heating power of the electromagnetic heating system can be accurately controlled, the problem of power overshoot can be avoided, the situation of excessive adjustment can not occur, and the safe and reliable work of the electromagnetic heating system is guaranteed.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. A heating power control method of an electromagnetic heating system, characterized by comprising the steps of:
acquiring target power of the electromagnetic heating system, and continuously detecting feedback power of the electromagnetic heating system;
when the current feedback power of the electromagnetic heating system is larger than the target power, judging whether the feedback power of the electromagnetic heating system is in a descending stage according to the current feedback power and the last feedback power, and if not, reducing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power; and
when the current feedback power of the electromagnetic heating system is smaller than or equal to the target power, judging whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power, and if not, increasing the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power;
when the feedback power of the electromagnetic heating system is in the descending stage, keeping the heating power of the electromagnetic heating system unchanged;
when the feedback power of the electromagnetic heating system is in the rising phase, keeping the heating power of the electromagnetic heating system unchanged.
2. The heating power control method of an electromagnetic heating system according to claim 1, wherein judging whether the feedback power of the electromagnetic heating system is in a decreasing stage according to the current feedback power and the last feedback power specifically includes:
judging whether the current feedback power is smaller than the last feedback power;
if so, judging that the feedback power of the electromagnetic heating system is in the descending stage.
3. The heating power control method of an electromagnetic heating system according to claim 1, wherein judging whether the feedback power of the electromagnetic heating system is in a rise phase according to the current feedback power and the last feedback power specifically includes:
judging whether the current feedback power is larger than the last feedback power;
and if so, judging that the feedback power of the electromagnetic heating system is in the rising stage.
4. A heating power control apparatus of an electromagnetic heating system, characterized by comprising:
the acquisition module is used for acquiring the target power of the electromagnetic heating system;
the detection module is used for continuously detecting the feedback power of the electromagnetic heating system;
a control module, which is respectively connected with the acquisition module and the detection module, wherein,
when the current feedback power of the electromagnetic heating system is larger than the target power, the control module judges whether the feedback power of the electromagnetic heating system is in a descending stage according to the current feedback power and the last feedback power, and if not, the control module reduces the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power; and
when the current feedback power of the electromagnetic heating system is smaller than or equal to the target power, the control module judges whether the feedback power of the electromagnetic heating system is in a rising stage according to the current feedback power and the last feedback power, and if not, the control module increases the heating power of the electromagnetic heating system according to the difference value of the current feedback power and the target power;
when the feedback power of the electromagnetic heating system is in the descending stage, the control module keeps the heating power of the electromagnetic heating system unchanged;
when the feedback power of the electromagnetic heating system is in the rising stage, the control module keeps the heating power of the electromagnetic heating system unchanged.
5. A heating power control device of an electromagnetic heating system as set forth in claim 4, wherein said control module determines whether the feedback power of the electromagnetic heating system is in a decreasing phase by determining whether the current feedback power is smaller than the last feedback power, and wherein when the current feedback power is smaller than the last feedback power, the control module determines that the feedback power of the electromagnetic heating system is in the decreasing phase.
6. A heating power control device of an electromagnetic heating system as set forth in claim 4, wherein said control module determines whether the feedback power of the electromagnetic heating system is in a rising phase by determining whether the current feedback power is greater than the last feedback power, wherein when the current feedback power is greater than the last feedback power, the control module determines that the feedback power of the electromagnetic heating system is in the rising phase.
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| CN108243516B (en) * | 2018-02-05 | 2021-02-26 | 宁波拓邦智能控制有限公司 | Power control method and device of electromagnetic heating equipment and electromagnetic heating equipment |
| CN110366283B (en) * | 2018-04-11 | 2022-04-19 | 佛山市顺德区美的电热电器制造有限公司 | Electromagnetic heating cooking utensil and power control method and device thereof |
| CN111385926B (en) * | 2018-12-29 | 2022-03-22 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of electromagnetic heating appliance and electromagnetic heating appliance |
| CN110649350A (en) * | 2019-09-30 | 2020-01-03 | 江西优特汽车技术有限公司 | Heating system for power battery |
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