Heating control method and system, electrical equipment and storage medium

Abstract

The invention provides a heating control method and system, electrical equipment and a storage medium. The heating control method comprises the following steps that the water inlet flow speed F0 and the inlet temperature Tinlet 0 at the initial moment are obtained; calculating the time t of the water flow passing through the heating path according to F initial and V; outputting a heating control signal after t; the inlet flow speed F, the inlet temperature T < inlet > and the outlet temperature T < outlet > at all moments from the current moment i in the heating process are obtained; calculating theoretical power P < total > i at the moment i according to Fi, T < in > i and T < out > i at the moment i; the power proportion uki at the moment i is calculated according to the set temperatures Tset and Tin i, the inlet temperatures Tin i-1 and Tin i-2 and a PID algorithm; calculating the adjusting power Pi at the moment i according to the T < in > i, the T < in > i-1, the T < out > i, the T < out > i-1, the P < total > i and the uki; and outputting a corresponding heating control signal according to the Pi. Stable and high-precision control over the heating process is achieved in a multi-parameter closed-loop feedback control mode.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and specifically relates to a heating control method and its manufacturing process. Background Art

[0002] Many household appliances have heating functions, such as steam cleaners, electric water heaters, water dispensers, etc. The heating control method in the prior art is to adjust the power of the heating element and the flow rate of the medium proportionally. The disadvantage of this is that it cannot effectively self-regulate when external conditions change. At the same time, due to the influence of the complex and changeable operating environment, there are also problems such as slow response speed, low control accuracy, and the safety of the heating element. The above problems restrict the development of electrical products towards energy conservation and miniaturization. Summary of the Invention

[0003] The purpose of the present invention is to provide a heating control method and its manufacturing process, which realizes stable and high-precision control of the heating process through a multi-parameter closed-loop feedback control method.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A heating control method, including the following steps:

[0005] Obtain the inlet water flow rate F0 and the inlet temperature T at the initial moment 进0 ;

[0006] According to the inlet water flow rate F 初 and the volume V of the heating path, calculate the time △t for the water to pass through the heating path;

[0007] Output a heating control signal after experiencing the time △t;

[0008] Obtain the inlet flow rate F, the inlet temperature T 进 at each moment up to the current i-th moment during the heating process, 出 the outlet temperature T

[0009] According to the inlet flow rate F at the i-th moment i and the inlet temperature T 进i and the outlet temperature T 出i calculate the theoretical power P at the i-th moment 总i ;

[0010] According to the set temperature T set and the inlet temperature T at the i-th moment 进i and the inlet temperature T at the (i - 1)-th moment 进i-1 and the inlet temperature T at the (i - 2)-th moment 进i-2 and the PID algorithm, calculate the power ratio uk at the i-th moment i ;

[0011] According to the inlet temperature T at the i-th moment​​​进i 、The inlet temperature T at time i-1 进i-1 、The outlet temperature T at time i 出i 、The outlet temperature T at time i-1 出i-1 、The theoretical power P at time i 总i and the power ratio uk at time i i Calculate the adjusted power P at time i i ;

[0012] Output the corresponding heating control signal according to the adjusted power Pi at time i.

[0013] Furthermore, the calculation formula for the theoretical power P 总i is as follows:

[0014] P 总i = P 水i + P 蒸汽i ,

[0015] where,

[0016] Furthermore, the calculation of the power ratio uk at time i according to the set temperature T set 、the inlet temperature T at time i 进i 、the inlet temperature T at time i-1 进i-1 and the inlet temperature T at time i-2 进i-2 and the PID algorithm includes the following steps: i :

[0017] Calculate the temperature error amount e according to the set temperature T set and the inlet temperature T at time i 进i ; i ;

[0018] Calculate the power ratio parameter duk at time i according to the temperature error amount e at time i i 、the temperature error amount e at time i-1 i-1 and the temperature error amount e at time i-2 i-2 ; i ;

[0019] Calculate the power ratio uk at time i according to the proportional parameter duk at time i i and the power ratio uk at time i-1 i-1 ; i ;

[0020] Judge whether the power ratio uk i is greater than the first preset value. If so, output the first preset value as the value of the power ratio uk i . Otherwise, judge the power ratio uk iWhether it is less than the second preset value. If so, take 0 as the power ratio uk i and output the value. Otherwise, output the value of the power ratio uk i . The first preset value is greater than the second preset value.

[0021] Furthermore, the temperature error amount e i is calculated by the formula:

[0022] e i = T set - T 进i ;

[0023] The calculation formula of the power ratio parameter duk i is:

[0024] duk i = Kp·(e i - e i-1 ) + Ki·e i + Kd·(e i - 2·e i-1 + e i-2 ), where e i-1 is the temperature error amount at the (i - 1)th moment, e i-2 is the temperature error amount at the (i - 2)th moment, Kp is the proportionality coefficient, Ki is the integral coefficient, and Kd is the differential coefficient;

[0025] The calculation formula of the power ratio uk i is:

[0026] uk i = uk i-1 + duk1; uk i-1 is the power ratio at the (i - 1)th moment.

[0027] Furthermore, calculating the adjusted power P 进i at the i-th moment according to the inlet temperature T 进i-1 at the i-th moment, the inlet temperature T 出i at the (i - 1)th moment, the outlet temperature T 出i-1 at the i-th moment, the outlet temperature T 总i at the (i - 1)th moment, the theoretical power P i at the i-th moment and the power ratio uk i at the i-th moment includes the following steps:

[0028] Calculate the inlet temperature change coefficient t 进i at the i-th moment according to the inlet temperature T 进i-1 at the i-th moment and the inlet temperature T 进i at the (i - 1)th moment;

[0029] According to the outlet temperature T 出iand the outlet temperature T at the (i - 1)th moment 出i-1 Calculate the outlet temperature change coefficient t at the ith moment 出i ;

[0030] According to the theoretical power P at the ith moment 总i and the power ratio uk i Calculate the first reference power P at the ith moment 参1i ;

[0031] According to the inlet temperature change coefficient t at the ith moment 进i and the reference power P 参 Calculate the second reference power P at the ith moment 参2i ;

[0032] According to the outlet temperature change coefficient t at the ith moment 出i and the second reference power P 参2i Calculate the adjusted power P at the ith moment i .

[0033] Furthermore, the calculation formula for the inlet temperature change coefficient t 进i is:

[0034]

[0035] The calculation formula for the outlet temperature change coefficient t 出i is:

[0036]

[0037] The calculation formula for the first reference power P 参1i is:

[0038] P 参1i = P 总i ·uk i ,

[0039] The calculation formula for the second reference power P 参2i is:

[0040] P 参2i = P 进i-1 ·(1 - t 进i ),

[0041] The calculation formula for the adjusted power P i is:

[0042] P i = P 参2i ·(1 - t 出i ).

[0043] Furthermore, the following steps are also included:

[0044] According to the inlet flow rate F at time i i and the inlet flow rate F at time i - 1 i-1 calculate the negative pressure flow rate ΔF at time i i ;

[0045] According to the negative pressure flow rate ΔF at time i i , the empty occupancy ratio Y at time i - 1 i-1 and the inlet water flow rate F0 at the initial time, calculate the empty occupancy ratio Y at time i i ;

[0046] Output the corresponding water pump control signal according to the empty occupancy ratio Yi at time i.

[0047] Furthermore, the formula for calculating the empty occupancy ratio Y i is:

[0048] Y i = Y i-1 ·(1 + ΔFi), ΔF i = F i - F i-1 .

[0049] The present invention also provides a steam generator heating control system, including:

[0050] An acquisition module for acquiring the inlet water flow rate F0 and the inlet temperature T before heating 进0 and the inlet water flow rate F at each time i up to time i during the heating process i , the inlet temperature T 进i and the outlet temperature T 出i ;

[0051] A time calculation module for calculating the time Δt for water to pass through the heating path according to the inlet water flow rate F 初 and the volume V of the heating path;

[0052] A theoretical power calculation module for calculating the theoretical power P at time i according to the inlet water flow rate F i , the inlet temperature T 进i and the outlet temperature T 出i at time i; 总i ;

[0053] A power ratio calculation module for calculating the power ratio uk at time i according to the set temperature T set , the inlet temperature T at time i 进i , the inlet temperature T at time i - 1 进i-1 , the inlet temperature T at time i - 2 进i-2 and the PID algorithm; i ;

[0054] Adjust the power Pi A calculation module, configured to calculate the adjusted power Pi at the i-th moment according to the inlet temperature Ti at the i-th moment, the inlet temperature Ti-1 at the (i-1)-th moment, the outlet temperature Toi at the i-th moment, the outlet temperature Toi-1 at the (i-1)-th moment, the theoretical power Pi at the i-th moment, and the power ratio uki at the i-th moment; 进i the inlet temperature T at the i-th moment, 进i-1 the inlet temperature T at the (i-1)-th moment, 出i the outlet temperature T at the i-th moment, 出i-1 the outlet temperature T at the (i-1)-th moment, 总i the theoretical power P at the i-th moment, i and the power ratio uk at the i-th moment to calculate the adjusted power P at the i-th moment; i

[0055] An output module, configured to output a corresponding heating control signal according to the adjusted power Pi at the i-th moment.

[0056] The present invention further provides an electrical device, including: a processor and a memory, where the memory is configured to store a computer program, and the processor is configured to execute the computer program to implement the above method.

[0057] The present invention further provides a storage medium, storing a computer program, where the computer program can be executed by a processor to implement the above method.

[0058] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can dynamically track the changes in the inlet and outlet temperatures and the negative pressure caused by heating, and uses a PID feedback algorithm for dynamic adjustment to achieve the purpose of stable and high-precision adaptive control, which helps the product to develop in the direction of energy conservation and miniaturization. Specific embodiments

[0059] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0060] Embodiment 1

[0061] A heating control method includes the following steps:

[0062] S1. Before the start of the heating stage, obtain the inlet water flow rate F0 and the inlet temperature T at the initial moment; 进0

[0063] S2. Calculate the time Δt for the water flow to pass through the heating path according to the inlet water flow rate F and the volume V of the heating path. 初 In this step, the calculation formula for the time Δt is: Δt = V / F

[0064] 初

[0065] ​​​​S3. After a time interval of Δt, enter the heating stage. At this time, output a heating control signal to cause the heating device to start heating the medium.

[0066] S4. Obtain the inlet flow rate F, inlet temperature T at each moment up to the current i-th moment during the heating process 进 and the outlet temperature T 出 .

[0067] S5. According to the inlet flow rate F at the i-th moment i , inlet temperature T 进i and outlet temperature T 出i calculate the theoretical power P at the i-th moment 总i .

[0068] In this step, the calculation formula for the theoretical power P 总i is:

[0069] P 总i = P 水i + P 蒸汽i ,

[0070] where P 水i represents the power required to raise the temperature of water at the i-th moment, and P 蒸汽i represents the power required to raise the temperature of steam at the i-th moment. If water does not undergo a phase change, that is, T 出i is less than 100 °C, then P 蒸汽i is 0.

[0071] S6. According to the set temperature T set , inlet temperature T at the i-th moment 进i , inlet temperature T at the (i - 1)-th moment 进i-1 , inlet temperature T at the (i - 2)-th moment 进i-2 and the PID algorithm, calculate the power ratio uk at the i-th moment i . This step includes:

[0072] S61. Calculate the temperature error amount e set according to the set temperature T 进i and the inlet temperature T at the i-th moment i . The calculation formula for the temperature error amount e i is: e i = T set - T 进i . In this example, the set temperature T set is 105 °C, that is, the medium is steam.

[0073] S62. According to the temperature error amount e at the i-th moment i , temperature error amount e at the (i - 1)-th moment i-1 and temperature error amount e at the (i - 2)-th moment i-2Calculate the power ratio parameter duk at time i i The power ratio parameter duk i is calculated by the following formula:

[0074] duk i = Kp·(e i - e i-1 ) + Ki·e i + Kd·(e i - 2·e i-1 + e i-2 ), where e i-1 is the temperature error at time i - 1, e i-2 is the temperature error at time i - 2, Kp is the proportional coefficient, with a value of 10 in this example, Ki is the integral coefficient, with a value of 9 in this example, and Kd is the differential coefficient, with a value of 10 in this example. It should be noted that in this step, when i = 1, e i-1 = T set - T 进i-1 , at this time T 进i-1 = T 进0 has not generated a detected value. Therefore, in the present invention, for collected quantities such as the inlet temperature T 进 , the outlet temperature T 出 , and the inlet flow rate F, etc., the values at time 0 can be preset according to experience. Also, since there is no time i - 2 at this time, e i-2 is substituted into the calculation as 0.

[0075] S63. Calculate the power ratio uk at time i based on the ratio parameter duk at time i i and the power ratio uk at time i - 1 i-1 . i .

[0076] The power ratio uk i is calculated by the following formula:

[0077] uk i = uk i-1 + duk1; uk i-1 is the power ratio at time i - 1.

[0078] S64. Determine whether the power ratio uk i is greater than the first preset value. If so, output the first preset value as the value of the power ratio uk i [[ID=7‎1]]. Otherwise, determine whether the power ratio uk i is less than the second preset value. If so, output 0 as the value of the power ratio uk i . Otherwise, output the power ratio uk iValue; the first preset value is greater than the second preset value. In this example, the value ranges of the first preset value and the second preset value are 0 - 1000, the first preset value is 990, and the second preset value is 2.

[0079] S7. Calculate the adjusted power P at the i-th moment according to the inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the outlet temperature T at the i-th moment 出i , the outlet temperature T at the (i - 1)-th moment 出i-1 , the theoretical power P at the i-th moment 总i and the power ratio uk at the i-th moment i . This step includes: i

[0080] S71. Calculate the inlet temperature change coefficient t at the i-th moment according to the inlet temperature T at the i-th moment 进i and the inlet temperature T at the (i - 1)-th moment 进i-1 . The calculation formula for the inlet temperature change coefficient t 进i is: 进i

[0081]

[0082] S72. Calculate the outlet temperature change coefficient t at the i-th moment according to the outlet temperature T at the i-th moment 出i and the outlet temperature T at the (i - 1)-th moment 出i-1 . The calculation formula for the outlet temperature change coefficient t 出i is: 出i

[0083]

[0084] S73. Calculate the first reference power P at the i-th moment according to the theoretical power P at the i-th moment 总i and the power ratio uk i . The calculation formula for the first reference power P 参1i is: 参1i

[0085] P 参1i = P 总i · uk i .

[0086] S74. Calculate the second reference power P at the i-th moment according to the inlet temperature change coefficient t at the i-th moment 进i and the reference power P 参 . The calculation formula for the second reference power P 参2i is: 参2i

[0087] P 参2i= P 进i-1 ·(1 - t 进i ).

[0088] S75. According to the outlet temperature change coefficient t at the i-th moment 出i and the second reference power P 参2i calculate the adjusted power P at the i-th moment i .

[0089] The calculation formula for the adjusted power P i is:

[0090] P i = P 参2i ·(1 - t 出i ).

[0091] S8. Output the corresponding heating control signal according to the adjusted power Pi at the i-th moment

[0092] Repeat steps S4 to S8 to achieve the heating dynamic adaptive regulation based on the heating power

[0093] As a preferred example, since pressure will be generated during the vaporization of the heated water volume, this pressure will impact in the opposite direction of the inlet. As a result, the flow rate generated by the parameters of the inlet flow rate provided by the system will decay. Therefore, it is necessary to compensate the inlet flow rate parameter within the set time according to the decay coefficient. Thus, the following steps are also included:

[0094] S9. According to the inlet flow velocity Fi at the i-th moment i and the inlet flow velocity Fi-1 at the (i - 1)-th moment i-1 calculate the negative pressure flow velocity ΔFi at the i-th moment i . The calculation formula for the negative pressure flow velocity ΔFi is: ΔF i = F i - F i-1 .

[0095] S10. According to the negative pressure flow velocity ΔFi at the i-th moment i , the duty cycle Yi-1 at the (i - 1)-th moment i-1 and the inlet flow velocity F0 at the initial moment, calculate the duty cycle Yi at the i-th moment i . The calculation formula for the duty cycle Yi i is:

[0096] Y i = Y i-1 ·(1 + ΔFi).

[0097] S11. Output the corresponding water pump control signal according to the duty cycle Yi at the i-th moment

[0098] Repeat steps S9 to S11 to achieve the heating dynamic adaptive regulation based on the water pump power

[0099] It should be noted that the heating process is affected by both the flow rate change and the inlet and outlet temperature changes. Therefore, when performing dynamic adjustment during the heating-up process, multiple parameters such as flow rate loss (i.e., steam negative pressure) and inlet and outlet temperature changes need to be considered. Therefore, a closed-loop feedback control method is introduced to synchronously adjust the heating power and the pump power, so that the heating-up process can be carried out under more stable, safe and reliable working conditions, further saving electric energy, which helps to miniaturize the product.

[0100] As a preferred example, during the heating process, the value of i is 1, 2, 3, ……, n, t i and t i-1 has an interval of 100 ms.

[0101] The present invention also provides a steam generator heating control system, including:

[0102] An acquisition module for acquiring the inlet water flow rate F0 and the inlet temperature T before heating 进0 and the inlet flow rates F at each moment up to the i-th moment during the heating process i , the inlet temperature T 进i and the outlet temperature T 出i .

[0103] A time calculation module for calculating the time △t for water to pass through the heating path according to the inlet water flow rate F 初 and the volume V of the heating path; Theoretical power calculation module for calculating the theoretical power Pi at the i-th moment according to the inlet flow rate F at the i-th moment

[0104] , the inlet temperature T i and the outlet temperature T 进i ; 出i 总i set 进i

[0105] A power ratio calculation module for calculating the power ratio uk at the i-th moment according to the set temperature T set , the inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the inlet temperature T at the (i - 2)-th moment 进i-2 and the PID algorithm; i ;

[0106] An adjustment power P i Calculation module for calculating according to the inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the outlet temperature T at the i-th moment 出i , the outlet temperature T at the (i - 1)-th moment [[ID=and the theoretical power P at the i-th moment 出i-1 总i and the power ratio uk at the i-th momenti Calculate the adjusted power P at time i i ;

[0107] An output module, configured to output a corresponding heating control signal according to the adjusted power P at time i i and output a corresponding water pump control signal according to the duty cycle Y at time i i Output the corresponding water pump control signal.

[0108] A negative pressure calculation module, configured to calculate the negative pressure flow rate ΔF at time i according to the inlet flow rate F at time i i and the inlet flow rate F at time i - 1 i-1 Calculate the negative pressure flow rate ΔF at time i i .

[0109] A duty cycle calculation module, configured to calculate the duty cycle Y at time i according to the negative pressure flow rate ΔF at time i i , the duty cycle Y at time i - 1 i-1 and the inlet water flow rate F0 at the initial time to calculate the duty cycle Y at time i i .

[0110] The present invention also provides an electrical device, including: a processor and a memory, the memory is used to store a computer program, and the processor is used to execute the computer program to implement the above method.

[0111] As a preferred example, the electrical device is a coffee machine, an electric water heater, a water dispenser, an integrated stove, an electric iron, an electric steam oven, a steam mop, a floor washer, a dishwasher, a washing machine, a steam cleaner, a steam disinfection machine, a steamed egg cooker, a clothes steamer. The above electrical devices can select the outlet state of the medium according to the specific working mode, such as a high-temperature liquid medium or a high-temperature gas medium, and the medium source is also determined according to the type of the electrical device, which will not be elaborated here.

[0112] The present invention also provides a storage medium, storing a computer program, and the computer program can be executed by a processor to implement the above method.

[0113] Details not described in the present invention are all well-known technologies to those skilled in the art, so they will not be elaborated.

[0114] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the shown orientation or positional relationship, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0115] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A heating control method, characterized in that: It includes the following steps: Obtain the influent flow rate F0 and the inlet temperature T at the initial moment 进0 ; According to the inlet water flow rate F 初 and the volume V of the heating path, calculate the time Δt for the water flow to pass through the heating path; Output a heating control signal after a time interval △t has elapsed; Obtain the inlet flow rate F and inlet temperature T at each moment up to the current moment i during the heating process 进 , outlet temperature T 出 ; According to the inlet flow rate F at time i i , the inlet temperature T 进i and the outlet temperature T 出i calculate the theoretical power P at time i 总i ; According to the set temperature T set , the inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the inlet temperature T at the (i - 2)-th moment 进i-2 and calculate the power ratio uk at the i-th moment by the PID algorithm i ; According to the inlet temperature T at time i 进i , the inlet temperature T at time i-1 进i-1 , the outlet temperature T at time i 出i , the outlet temperature T at time i-1 出i-1 , the theoretical power P at time i 总i and the power ratio uk at time i i calculate the adjusted power P at time i i ; Output a corresponding heating control signal according to the adjusted power Pi at the i-th moment.

2. The heating control method according to claim 1, wherein: The theoretical power P 总i is calculated by the formula: P 总i = P 水i + P 蒸汽i , Among them, 3. The heating control method according to claim 1, characterized in that: According to the set temperature T set , the inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the inlet temperature T at the (i - 2)-th moment 进i-2 and calculating the power ratio uk at the i-th moment by the PID algorithm i include the following steps: According to the set temperature T set and the inlet temperature T at time i 进i calculate the temperature error amount e i ; According to the temperature error amount e at the i-th moment i , the temperature error amount e at the (i - 1)-th moment i-1 and the temperature error amount e at the (i - 2)-th moment i-2 calculate the power ratio parameter duk at the i-th moment i ; According to the proportional parameter duk at time i i and the power ratio uk at time i-1 i-1 calculate the power ratio uk at time i i ; Determine the power ratio uk i Whether it is greater than the first preset value. If so, use the first preset value as the power ratio uk i and output its value. Otherwise, determine the power ratio uk i Whether it is less than the second preset value. If so, use 0 as the power ratio uk i and output its value. Otherwise, output the value of the power ratio uk i ; The first preset value is greater than the second preset value.

4. A heating control method according to claim 3, characterized in that: The temperature error amount e i is calculated by the following formula: e i = T set - T 进i ; The power ratio parameter duk i has the following calculation formula: duk i = Kp·(e i - e i-1 ) + Ki·e i + Kd·(e i - 2·e i-1 + e i-2 ), where e i-1 is the temperature error at time i - 1, e i-2 is the temperature error at time i - 2, Kp is the proportionality coefficient, Ki is the integral coefficient, and Kd is the differential coefficient; The power ratio uk i has the following calculation formula: uk i = uk i-1 + duk1; uk i-1 is the power ratio at time i - 1.

5. A heating control method according to claim 1, characterized in that: The inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the outlet temperature T at the i-th moment 出i , the outlet temperature T at the (i - 1)-th moment 出i-1 , the theoretical power P at the i-th moment 总i and the power ratio uk at the i-th moment i to calculate the adjusted power P at the i-th moment i comprises the following steps: According to the inlet temperature T at time i 进i and the inlet temperature T at time i - 1 进i-1 calculate the inlet temperature change coefficient t at time i 进i ; According to the outlet temperature T at time i 出i and the outlet temperature T at time i-1 出i-1 calculate the outlet temperature change coefficient t at time i 出i ; According to the theoretical power P at the i-th moment 总i and the power ratio uk i calculate the first reference power P at the i-th moment 参1i ; According to the inlet temperature change coefficient t at time i 进i and the reference power P 参 calculate the second reference power P at time i 参2i ; According to the outlet temperature change coefficient t at the i-th moment 出i and the second reference power P 参2i calculate the adjusted power P at the i-th moment i .

6. The heating control method according to claim 5, characterized in that: The import temperature change coefficient t 进i is calculated by the following formula: The outlet temperature change coefficient t 出i is calculated by the following formula: The first reference power P 参1i is calculated by the following formula: P 参1i = P 总i · uk i , The calculation formula for the second reference power P 参2i is as follows: P 参2i = P 进i-1 ·(1 - t 进i ) The adjusted power P i has the following calculation formula: P i = P 参2i ·(1 - t 出i )。 7. A heating control method according to claim 1, characterized in that: It further includes the following steps: According to the inlet flow rate F at time i i and the inlet flow rate F at time i - 1 i-1 calculate the negative pressure flow rate ΔF at time i i ; According to the negative pressure flow rate △F at time i i , the empty occupancy ratio Y at time i - 1 i-1 and the influent flow rate F0 at the initial time to calculate the empty occupancy ratio Y at time i i ; Output a corresponding water pump control signal according to the duty cycle Yi at the i-th moment.

8. A heating control method according to claim 7, characterized in that: The empty duty cycle Y i has the following calculation formula: Y i = Y i-1 ·(1 + ΔFi), ΔF i = F i - F i-1 。 9. A heating control system for a steam generator, characterized in that: It includes: An acquisition module for acquiring the inlet water flow rate F0 and the inlet temperature T before heating 进0 and the inlet flow rate F at each moment up to the i-th moment during the heating process i 、the inlet temperature T 进i and the outlet temperature T 出i ; A time calculation module, configured to calculate the time Δt for water flow to pass through the heating path according to the influent water flow rate F 初 and the volume V of the heating path; Theoretical power calculation module, which is used to calculate the theoretical power Pi at the i-th moment according to the inlet flow rate Fi i , the inlet temperature Ti 进i and the outlet temperature To 出i ; 总i ; A power ratio calculation module, which is used to calculate the power ratio uk at the i-th moment according to the set temperature T set , the inlet temperature T at the i-th moment 进i , the inlet temperature T at the (i - 1)-th moment 进i-1 , the inlet temperature T at the (i - 2)-th moment 进i-2 and the PID algorithm i ; Adjust the power P i A calculation module for calculating, according to the inlet temperature T at time i 进i , the inlet temperature T at time i - 1 进i-1 , the outlet temperature T at time i 出i , the outlet temperature T at time i - 1 出i-1 , the theoretical power P at time i 总i and the power ratio uk at time i i calculate the adjusted power P at time i i ; An output module for outputting a corresponding heating control signal according to the adjusted power Pi at the i-th moment.

10. An electrical device, characterized in that: It includes: A processor and a memory, the memory is used to store a computer program, and the processor is used to execute the computer program to implement the method as claimed in claim 1.

11. A storage medium, characterized in that, A computer program is stored, and the computer program can be executed by a processor to implement the method as claimed in claim 1.

Images