CN102768549A - Temperature control method and system of microwave oven, and microwave oven - Google Patents
Temperature control method and system of microwave oven, and microwave oven Download PDFInfo
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- CN102768549A CN102768549A CN2012102786838A CN201210278683A CN102768549A CN 102768549 A CN102768549 A CN 102768549A CN 2012102786838 A CN2012102786838 A CN 2012102786838A CN 201210278683 A CN201210278683 A CN 201210278683A CN 102768549 A CN102768549 A CN 102768549A
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Abstract
The invention discloses a temperature control method and a system of a microwave oven, and the microwave oven. The method comprises the following steps of: collecting a microwave oven temperature in stages; comparing an oven temperature and a set temperature through a (Proportion Integration Differentiation) PID instruction, obtaining a deviation value, carrying out the PID calculation and processing on the deviation value to obtain a corresponding controlled quantity; regulating a power of a microwave source based on the controlled quantity; and controlling a temperature of the microwave oven based on the regulated power output by the microwave source. Temperature control accuracy of the microwave oven is increased, thus, problems of high-cost implementation manner of a PID control method, complicated operation steps, heavy-workload microwave oven and a large quantity of manpower and financial resources wasting in the prior art are solved.
Description
Technical field
The present invention relates to microwave oven control field, in particular, relate to a kind of temperature-controlled process, system and microwave oven of microwave oven.
Background technology
Along with the development of China's industrial technology, microwave oven more and more is widely used in industrial circles such as machinery, metallurgy, oil and coal gas as a kind of equipment in order to calcining materials or burnt product that is built into fire resistive material.
The method of PID control is adopted in the control of microwave oven internal temperature mostly, mainly contains dual mode and realizes the PID control method.A kind of is to adopt the PID process control module, and the user only need be provided with some parameters when using this module, and very easy to use, a module can be controlled several roads even tens road closed loops.But costing an arm and a leg of this module generally used in large-scale control system.Another kind is to use self-compiling program to realize the PID closed-loop control, but this method all need be by user oneself establishment PID control program.
This shows that the implementation cost of PID control method of the prior art is expensive, complex operation step, can increase the work load of microwave oven, waste great amount of manpower financial resources.
Summary of the invention
In view of this, the invention provides a kind of temperature-controlled process and system of microwave oven, to overcome in the prior art because the implementation cost of PID control method is expensive, the problem of complex operation step.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of temperature-controlled process of microwave oven comprises:
Temperature in the microwave oven is gathered in segmentation;
Deviation in the more said stove of PID (PID) instruction between temperature and the design temperature is obtained departure, and said deviate is carried out PID computing and processing, obtains the control corresponding amount;
Regulate the power in controlled microwave source according to said controlled quentity controlled variable;
The temperature of the power controlled microwave heating furnace after regulating of the said microwave source output of foundation.
Preferably, before the PID calculation process, also comprise: PID is debugged, make ratio, integration and differentiation element can both reach threshold value; Wherein, said PID debugging is carried out under the situation that the maximum of the temperature control system of said microwave oven is carried.
Preferably, when carrying out the temperature-controlled process of said microwave oven, the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.
Preferably, obtain after the control corresponding amount, change said controlled quentity controlled variable and be suitable control information, according to the temperature in the said microwave oven of said suitable control information sequence regulating and controlling.
Preferably, said deviate is carried out PID handle, the detailed process that obtains corresponding controlled quentity controlled variable comprises: the differential component during the difference of temperature is handled as PID in the stove of temperature and previous moment in the stove of calculating current time; Obtain the interference value in forehearth; Receive said deviate, and carry out the PID computing, obtain corresponding controlled quentity controlled variable output according to said deviate, said differential component and said interference value.
A kind of microwave oven temperature control system comprises:
Segmentation is arranged at the thermopair in the microwave oven, is used to gather the interior temperature of stove of place section;
The PLC controller is used to obtain the interior temperature of stove that thermopair collects, and the deviation in the more said stove of PID instruction between temperature and the design temperature is obtained departure, and said departure is carried out PID computing and processing, obtains the control corresponding amount;
Voltage regulating module is used to receive said controlled quentity controlled variable, regulates the power of microwave source;
Microwave source is used for the modulation result according to said voltage regulating module, exports corresponding power.
Preferably; Above-mentioned microwave oven temperature control system; Also comprise: human-computer interaction interface, be used for showing the data of each operating process in the above-mentioned microwave oven, said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.
Preferably, above-mentioned microwave oven temperature control system also comprises: along the control unit, be used to change said controlled quentity controlled variable and be suitable control information, foundation is said along temperature in the control information sequence regulating and controlling microwave oven.
Preferably, said PLC controller comprises: analog module is used to obtain the interior temperature of stove that thermopair collects; The PID adjustment module is used for the deviation between the temperature and design temperature in the more said stove of PID instruction, obtains departure, and said departure is carried out PID computing and processing, obtains the control corresponding amount.
A kind of microwave oven comprises: aforesaid microwave oven temperature control system.
Can know via above-mentioned technical scheme; Compared with prior art; The invention discloses a kind of temperature-controlled process, system and microwave oven of microwave oven; Be arranged at temperature in the stove of the thermopair collection place section in the microwave oven through segmentation, the PLC controller obtains temperature in the stove that thermopair collects, and compares with design temperature through the PID instruction and obtains departure; Said departure is carried out PID computing and processing, obtain control corresponding amount to voltage regulating module and regulate the power output of microwave source and then the temperature of controlled microwave heating furnace.Through above-mentioned PID control method the operating cost of microwave oven is reduced greatly; Its operation steps is simple; Control accuracy is high, and antijamming capability is strong, realizes intelligent operation; And in the scope that allows load, armature resistance and moment of inertia to change, the premium properties of rapidity that can both keep responding and floating, non-overshoot.Thereby alleviated the work load of microwave oven, saved the great amount of manpower financial resources.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 is the temperature-controlled process process flow diagram of disclosed a kind of microwave oven in the embodiment of the invention one;
Fig. 2 handles the detailed process process flow diagram that obtains corresponding controlled quentity controlled variable in the temperature controlled processes of disclosed microwave oven in the embodiment of the invention one said deviate being carried out PID;
Fig. 3 is the concrete debug process process flow diagram of the PID of disclosed microwave oven in the embodiment of the invention one;
Fig. 4 is the temperature-controlled process process flow diagram of the embodiment of the invention two disclosed another microwave oven;
Fig. 5 is the temperature-controlled process process flow diagram of the embodiment of the invention three disclosed another microwave oven;
Fig. 6 is the structural representation of the embodiment of the invention four disclosed a kind of microwave oven temperature control systems;
Fig. 7 is the structural representation of the PLC controller in the embodiment of the invention four disclosed a kind of microwave oven temperature control systems;
Fig. 8 is the structural representation of the embodiment of the invention five disclosed another microwave oven temperature control system;
Fig. 9 is the structural representation of the embodiment of the invention six disclosed another microwave oven temperature control system.
Embodiment
For quote and know for the purpose of, the explanation of the technical term that hereinafter uses, write a Chinese character in simplified form or abridge and sum up as follows:
HMI, Human Machine Interface, human-computer interaction interface;
PLC, Programmable Logic Controller, programmable logic controller (PLC);
PID, Proportion Integration Differentiation, ratio, integration, differential control are called for short PID control, claim that again PID regulates.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention discloses a kind of temperature-controlled process, system and microwave oven of microwave oven, with implementation cost costliness, complex operation step, the work load problem heavily that solves the PID control method in the microwave oven of the prior art.
The invention discloses a kind of temperature-controlled process of microwave oven; The deviation of temperature and predefined temperature in the stove that collects through PID comparative heat galvanic couple; The deviate that obtains is carried out PID computing and processing; Result after handling is carried out the power adjustments of microwave source, export the power after the said adjusting, and then the temperature of controlled microwave heating furnace.
Embodiment one
The temperature-controlled process flow process of the embodiment of the invention one disclosed microwave oven is as shown in Figure 1, comprising:
Step S11: temperature in the microwave oven is gathered in segmentation.
In the process of execution in step S11, be based in the space that segmentation is divided in microwave oven the thermopair of each section placement.Each thermopair is used for gathering temperature in the stove of place section respectively, when which section temperature controller needs, thermopair that should section is then gathered the temperature of correspondent section.
Step S12: the deviation in the more said stove of PID instruction between temperature and the design temperature, obtain departure, said deviate is carried out PID computing and processing, obtain the control corresponding amount.
When execution in step S12, at first system is according to the speed of departure variation, and the differential part in the PID adjustment module provides bigger regulating action in advance; As long as departure exists, proportional parts will in time produce and the proportional regulating action of departure, reduces departure; As long as departure is non-vanishing, the output of controller will constantly change because of integral action.
Step S13: the power of regulating the controlled microwave source according to said controlled quentity controlled variable.
When execution in step S13, concrete adjusting or control method are: when temperature is higher than design temperature in the stove, then reduce the power output of microwave source; When temperature is lower than design temperature in the stove, then increase the power output of microwave source.Keep the balance of temperature in the microwave oven with this.
Step S 14: the temperature of the power controlled microwave heating furnace after regulating of the said microwave source output of foundation.
The disclosed embodiment of the invention described above obtains temperature in the stove that thermopair collects through the PLC controller; Deviation between PID instruction comparison and design temperature; Obtain departure; And said departure is carried out the PID computing arrive voltage regulating module with processing back output control corresponding amount, the output of regulating microwave source power comes the interior temperature of controlled microwave heating furnace.Can reduce the operating cost of microwave oven, its operation steps is simple, and intelligent running has improved the temperature controlled accuracy of microwave oven, thereby reduced its work load, has saved the great amount of manpower financial resources.
Based on the temperature-controlled process of above-mentioned microwave oven, concrete, in execution in step S12, said deviate is carried out PID and handle, as shown in Figure 2, its detailed process that obtains corresponding controlled quentity controlled variable comprises:
S21: the differential component during the difference of temperature is handled as PID in the stove of temperature and previous moment in the stove of calculating current time;
S22: obtain the interference value in forehearth;
S23: receive said deviate, and carry out the PID computing, obtain corresponding controlled quentity controlled variable output according to said deviate, said differential component and said interference value.
The accurate more regulating and controlling of this process the temperature in the microwave oven, and governing response is quick, has improved the efficient of whole microwave oven temperature control system, thereby has practiced thrift cost, has reduced the work load of microwave oven.
Same, said deviate is carried out the PID computing and handled the concrete debug process that also comprises PID before, as shown in Figure 3, said process comprises:
S31: close the control of integration control and differential, strengthen proportional control, make system produce concussion;
S32: reduce proportional control, find critical concussion point;
S33: strengthen integration control, make controlled variable reach desired value;
S34: re-power and see overshoot, concussion and stabilization time,,, then get into step S35 if do not reach threshold values if reach threshold values then get into step S36;
S35: to suitable some differential terms of increase of situation of hyperharmonic concussion.
S36: debug process finishes.
Need to prove that above-mentioned debugging is carried out under the situation that the maximum of the temperature control system of this microwave oven is carried.
Above-mentioned its operation steps of microwave oven temperature-controlled process is simple; Intelligent running; The debug process of before its operation, being done can guarantee its normal operation, finds that in advance the problem that the whole service process exists also in time solves, and has improved the high efficiency of its operational process; Make simple to operateization, improved overall system efficiency.
Embodiment two
The temperature-controlled process flow process of the embodiment of the invention two disclosed microwave ovens is as shown in Figure 4, comprising:
Step S41: temperature in the microwave oven is gathered in segmentation;
Step S42: the deviation in the more said stove of PID instruction between temperature and the design temperature, obtain departure, said deviate is carried out PID computing and processing, obtain the control corresponding amount;
Step S43: the power of regulating the controlled microwave source according to said controlled quentity controlled variable;
Step S44: the temperature of the power controlled microwave heating furnace after regulating of the said microwave source output of foundation.
Step S45: when carrying out the temperature-controlled process of said microwave oven, the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.
Above-mentioned steps S41 ~ S44 is consistent with the disclosed step S11 ~ S14 among the embodiment one, repeats no more here.
Difference is; In this embodiment two; In the intelligent running of microwave oven, increase to microwave oven in data in each operating process carry out real-time operation displayed process; Can realize the interaction between operating personnel and the microwave oven, thereby make operating personnel can know at any time that the course of work in the microwave oven further regulates the temperature in the microwave oven, make control more accurately, in time.
Embodiment three
The temperature-controlled process flow process of the embodiment of the invention three disclosed microwave ovens is as shown in Figure 5, comprising:
Step S51: temperature in the microwave oven is gathered in segmentation;
Step S52: the deviation in the more said stove of PID instruction between temperature and the design temperature, obtain departure, said deviate is carried out PID computing and processing, obtain the control corresponding amount;
Step S53: the power of regulating the controlled microwave source according to said controlled quentity controlled variable;
Step S54: the temperature of the power controlled microwave heating furnace after regulating of the said microwave source output of foundation.
Step S55: when carrying out the temperature-controlled process of said microwave oven, the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.Can realize the interaction between operating personnel and the microwave oven, thereby make operating personnel can know at any time that the course of work in the microwave oven further regulates the temperature in the microwave oven.
Step S56: obtain after the control corresponding amount, change said controlled quentity controlled variable and be suitable control information, according to the temperature in the said microwave oven of said suitable control information sequence regulating and controlling.
Above-mentioned steps S51 ~ S54 is consistent with the disclosed step S11 ~ S14 among the embodiment one, repeats no more here.
Difference is; In this embodiment three, when the microwave heating furnace interior was accurately controlled running, the process that the temperature in the said microwave oven is regulated in the sequential control of increase can realize the sequential control to temperature in the microwave oven; Make that regulating system is ruly carries out; Make that whole humidity control system control accuracy is higher, antijamming capability is stronger, and then make the total system structure compact more, be convenient to safeguard.
Embodiment four
Describe method in detail among the disclosed embodiment of the invention described above, can adopt the device of various ways to realize, therefore the invention also discloses a kind of microwave oven temperature control equipment, provide concrete embodiment below and be elaborated for method of the present invention.
The present invention discloses a kind of microwave oven temperature control system of using above-mentioned microwave oven temperature-controlled process; Its structure is as shown in Figure 6, comprising: segmentation is arranged at thermopair 111, PLC controller 112, voltage regulating module 113 and the microwave source 114 in the microwave oven.
Said segmentation is arranged at the thermopair 111 in the microwave oven, is used to gather temperature in the stove of place section, when which section temperature controller needs, thermopair that should section is then gathered the temperature of correspondent section.
Said voltage regulating module 113 is used to receive said controlled quentity controlled variable, regulates the power of microwave source.When temperature is higher than design temperature in the stove, then reduce the power output of microwave source; When temperature is lower than design temperature in the stove, then increase the power output of microwave source.Keep the balance of temperature in the microwave oven with this.
Said microwave source 114 is used for the modulation result according to said voltage regulating module, exports corresponding power.
The disclosed embodiment of the invention described above obtains temperature in the stove that thermopair collects through the PLC controller; Deviation between PID instruction comparison and design temperature; Obtain departure; And said departure is carried out the PID computing arrive voltage regulating module 113 with processing back output control corresponding amount, the output of regulating microwave source power comes the interior temperature of controlled microwave heating furnace.Can reduce the operating cost of microwave oven, its operation steps is simple, and intelligent running has improved the temperature controlled accuracy of microwave oven, thereby reduced its work load, has saved the great amount of manpower financial resources.
Concrete as shown in Figure 7 above-mentioned PLC controller comprises: analog module 221 and PID adjustment module 222.
Need to prove; The disclosed analog module 221 of the invention described above embodiment can be specially the FX2N-3A module; This module is 8 analog quantity functionalization modules that are widely used; Two input channels and an output channel are arranged, and input channel becomes digital value with the analog signal conversion that receives, and output channel adopts digital value and exports the equivalent simulating signal.Above-mentioned PID adjustment module 222 can be specially the FX2N-14MT module, and 8 advance 6 goes out to add up to 14 points, transistor output, integrated 2 road high-speed pulse input interfaces.
The accurate more regulating and controlling of this process the temperature in the microwave oven, and governing response is quick, has improved the efficient of whole microwave oven temperature control system, thereby has practiced thrift cost, has reduced the work load of microwave oven.
Embodiment five
Present embodiment also discloses a kind of microwave oven temperature control system on the basis of the disclosed embodiment of the invention described above; Its structure is as shown in Figure 8, comprising: segmentation is arranged at thermopair 331, PLC controller 332, voltage regulating module 333, microwave source 334 and the human-computer interaction interface 335 in the microwave oven.
Said segmentation is arranged at the thermopair 331 in the microwave oven, is used to gather the interior temperature of stove of place section; Said PLC controller 332 is used to obtain the interior temperature of stove that thermopair collects, and the deviation in the more said stove of PID instruction between temperature and the design temperature is obtained departure, and said departure is carried out PID computing and processing, obtains the control corresponding amount; Said voltage regulating module 333 is used to receive said controlled quentity controlled variable, regulates the power of microwave source; Said microwave source 334 is used for the modulation result according to said voltage regulating module, exports corresponding power; Human-computer interaction interface 335 is used for when carrying out the temperature-controlled process of said microwave oven, and the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.
The human-computer interaction interface 335 that in the intelligent running of microwave oven, increases can be realized the interaction between operating personnel and the microwave oven; Make operating personnel can know at any time that thereby the course of work in the microwave oven further regulates the temperature in the microwave oven, make control more accurately, in time.
Embodiment six
Present embodiment also discloses a kind of microwave oven temperature control system on the basis of the disclosed embodiment of the invention described above; Its structure is as shown in Figure 9, comprising: segmentation is arranged at thermopair 441, PLC controller 442, voltage regulating module 443, microwave source 444, human-computer interaction interface 445 and the suitable control unit 446 in the microwave oven.
Said segmentation is arranged at the thermopair 441 in the microwave oven, is used to gather the interior temperature of stove of place section; Said PLC controller 442 is used to obtain the interior temperature of stove that thermopair collects, and the deviation in the more said stove of PID instruction between temperature and the design temperature is obtained departure, and said departure is carried out PID computing and processing, obtains the control corresponding amount; Said voltage regulating module 443 is used to receive said controlled quentity controlled variable, regulates the power of microwave source; Said microwave source 444 is used for the modulation result according to said voltage regulating module, exports corresponding power; Human-computer interaction interface 445 is used for when carrying out the temperature-controlled process of said microwave oven, and the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove; Along control unit 446, be used to change said controlled quentity controlled variable and be suitable control information, foundation is said along temperature in the control information sequence regulating and controlling microwave oven.
When accurately control operates in microwave oven; What increase can sequential control regulate the temperature in the microwave oven along control unit 446; Make that whole humidity control system control accuracy is higher, antijamming capability is stronger, make the total system structure compact more, be convenient to safeguard.
Further, the invention also discloses a kind of microwave oven, comprise whole microwave heating furnace system, this system is used for segmentation and gathers temperature in the microwave oven; Deviation in the more said stove of PID instruction between temperature and the design temperature is obtained departure, and said deviate is carried out PID computing and processing, obtains the control corresponding amount; Regulate the power in controlled microwave source; Export the power after the said adjusting, accurately the temperature of controlled microwave heating furnace.
In sum:
Native system obtains temperature in the stove that thermopair collects through the PLC controller; Deviation between PID instruction comparison and design temperature; Obtain departure; And said departure is carried out the PID computing arrive voltage regulating module with processing back output control corresponding amount, the output of regulating microwave source power comes the interior temperature of controlled microwave heating furnace.Can reduce the operating cost of microwave oven, its operation steps is simple, and intelligent running has improved the temperature controlled accuracy of microwave oven, thereby reduced its work load, has saved the great amount of manpower financial resources.
Each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part is partly explained referring to method and is got final product.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can be directly with the software modules of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. the temperature-controlled process of a microwave oven is characterized in that, comprising:
Temperature in the microwave oven is gathered in segmentation;
Deviation in the more said stove of PID (PID) instruction between temperature and the design temperature is obtained departure, and said deviate is carried out PID computing and processing, obtains the control corresponding amount;
Regulate the power in controlled microwave source according to said controlled quentity controlled variable;
The temperature of the power controlled microwave heating furnace after regulating of the said microwave source output of foundation.
2. method according to claim 1 is characterized in that, before said deviate being carried out the PID computing and handling, also comprises:
PID is debugged, make ratio, integration and differentiation element can both reach threshold value;
Wherein, said PID debugging is carried out under the situation that the maximum of the temperature control system of said microwave oven is carried.
3. method according to claim 1 is characterized in that, also comprises:
When carrying out the temperature-controlled process of said microwave oven, the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.
4. method according to claim 1 is characterized in that, obtains also comprising after the control corresponding amount: change said controlled quentity controlled variable and be suitable control information, according to the temperature in the said microwave oven of said suitable control information sequence regulating and controlling.
5. method according to claim 1 is characterized in that, said deviate is carried out PID handle, and the detailed process that obtains corresponding controlled quentity controlled variable comprises:
Differential component during the difference of temperature is handled as PID in the stove of temperature and previous moment in the stove of calculating current time;
Obtain the interference value in forehearth;
Receive said deviate, and carry out the PID computing, obtain corresponding controlled quentity controlled variable output according to said deviate, said differential component and said interference value.
6. a microwave oven temperature control system is characterized in that, comprising:
Segmentation is arranged at the thermopair in the microwave oven, is used to gather the interior temperature of stove of place section;
Programmable logic controller (PLC) (PLC); Be used to obtain the interior temperature of stove that thermopair collects, the deviation in the more said stove of PID instruction between temperature and the design temperature is obtained departure; Said departure is carried out PID computing and processing, obtain the control corresponding amount;
Voltage regulating module is used to receive said controlled quentity controlled variable, regulates the power of microwave source;
Microwave source is used for the modulation result according to said voltage regulating module, exports corresponding power.
7. system according to claim 6 is characterized in that, also comprises:
Human-computer interaction interface is used for when carrying out the temperature-controlled process of said microwave oven, and the data that each operation is generated show that in real time said data comprise: the performance number of temperature, said deviate or the output of said microwave source in the said stove.
8. system according to claim 6 is characterized in that, also comprises the suitable control unit that is connected with said PLC:
Said along the control unit, be used to change said controlled quentity controlled variable and be suitable control information, foundation is said along temperature in the control information sequence regulating and controlling microwave oven.
9. system according to claim 6 is characterized in that, said PLC controller comprises:
Analog module is used to obtain the interior temperature of stove that thermopair collects;
The PID adjustment module is used for the deviation between the temperature and design temperature in the more said stove of PID instruction, obtains departure, and said departure is carried out PID computing and processing, obtains the control corresponding amount.
10. a microwave oven is characterized in that, comprises any described microwave oven temperature control system in the claim 6 ~ 9.
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