Intelligent linkage control system and working method for squeezing and extracting juice in sugar factories

Abstract

The invention discloses an intelligent linkage control system for squeezing and juice extraction in a sugar factory and a working method thereof, including a nuclear scale balance control system, a squeezer speed control module and a squeezer control system; the nuclear scale balance control system includes a No. 1 sugarcane conveyor motor angular velocity sensor, a No. 1 sugarcane conveyor motor speed regulating cabinet, a No. 1 nuclear scale ionization chamber, a No. 2 sugarcane conveyor motor angular velocity sensor, a No. 2 sugarcane conveyor motor speed regulating cabinet, a No. 2 nuclear scale ionization chamber and a nuclear scale input squeezing amount control module; the squeezer control system includes several levels of squeezer control subsystems; the squeezer speed control module is respectively connected to the nuclear scale input squeezing amount control module and the squeezer control subsystems at various levels; each level of the squeezer control subsystem includes a squeezer motor current sensor, a squeezer motor speed regulating cabinet and a squeezer material level sensor group. The invention helps the squeezer to run smoothly, promotes the squeezing of sugar, reduces the light conversion degree of bagasse, increases the yield, reduces the moisture content of bagasse, and optimizes the squeezing process.

Description

Technical Field

[0001] The invention relates to a juice extraction control system in a sugar factory, and in particular to an intelligent linkage control system for squeezing juice extraction in a sugar factory and a working method thereof. Background Art

[0002] The juice extraction process in the sugar factory is completed in the pressing workshop, including the nuclear scale balance control system and the pressing control system. The function of the nuclear scale balance control system is to achieve balanced pressing volume according to the preset quality. In actual production, the fiber content of sugarcane varies with the sugarcane variety and season, which causes the density of sugarcane to change, resulting in changes in the volume of sugarcane entering the press, and changes in the material level of the press or the current of the press motor. In the prior art, the nuclear scale balance control system and the pressing control system operate separately, and data cannot be shared and linked to each other. Therefore, the pressing control system cannot know the changes in fiber content and can only adjust the speed of the press motor according to the changes in the material level of the press or the current of the press motor, resulting in delayed adjustment of the press and slow response, which causes unstable operation of the press and large fluctuations in the speed of the press motor, which seriously affects the production efficiency of the press, and the sugar cannot be completely squeezed out, affecting the output. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide an intelligent linkage control system for squeezing and juice extraction in a sugar factory and a working method thereof, so as to solve the technical problems in the prior art that the nuclear scale system and the squeezing control system operate separately, and data cannot be shared and linked and regulated between the two, resulting in unstable operation of the squeezing machine system, large fluctuations in the speed of the squeezing machine motor, serious impact on the production efficiency of the squeezing machine, and the inability to completely squeeze out the sugar, thereby affecting the output.

[0004] To achieve the above-mentioned purpose, the present invention provides an intelligent linkage control system for squeezing and juice extraction in a sugar factory, comprising a nuclear scale balance control system, a squeezer speed control module and a squeezer control system; the nuclear scale balance control system comprises a No. 1 sugarcane conveyor motor angular velocity sensor, a No. 1 sugarcane conveyor motor speed regulating cabinet, a No. 1 nuclear scale ionization chamber, a No. 2 sugarcane conveyor motor angular velocity sensor, a No. 2 sugarcane conveyor motor speed regulating cabinet, a No. 2 nuclear scale ionization chamber and a nuclear scale input squeezing amount control module respectively connected to the six; the squeezer control system comprises several levels of squeezer control subsystems; the squeezer speed control module is respectively connected to the nuclear scale input squeezing amount control module and the squeezer control subsystems at each level; each level of the squeezer control subsystem comprises a squeezer motor current sensor, a squeezer motor speed regulating cabinet and a squeezer material level sensor group.

[0005] Furthermore, each level of the press control subsystem also includes a press motor angular velocity sensor.

[0006] Further, it also includes a nuclear weigher incoming pressing amount adjustment system; the nuclear weigher incoming pressing amount adjustment system includes a PI controller and a nuclear weigher incoming pressing amount adjustment module; the PI controller is respectively connected to the pressing machine speed control module and the nuclear weigher incoming pressing amount adjustment module; the nuclear weigher incoming pressing amount adjustment module is connected to the nuclear weigher incoming pressing amount control module

[0007] The present invention also provides a working method for the intelligent linkage control system for pressing and juice extraction in a sugar factory. The method for adjusting the speed of the first-stage pressing machine is as follows: the maximum angular velocity of the first-stage pressing machine motor is preset in the pressing machine speed control module The maximum current I of the first-stage pressing machine motor M1 max and the maximum material level L1max of the first-stage pressing machine; first, judge whether the current I of the first-stage pressing machine motor M1 is greater than or equal to I M1 max, and judge whether the material level L1 of the first-stage pressing machine is greater than or equal to L1max;

[0008] When any one of them is satisfied, the pressing machine speed control module controls the target angular velocity of the first-stage pressing machine motor equal to That is, when I M1 ≥I M1 max or L1≥L1max,

[0009] When neither of them is satisfied, the pressing machine speed control module receives the angular velocity of the motor of the No. 2 cane conveyor and the instantaneous incoming pressing amount Tz of the No. 2 cane conveyor transmitted by the nuclear weigher balance control system, and combines the current I of the first-stage pressing machine motor measured by the first-stage pressing machine motor current sensor and calculates the target angular velocity of the first-stage pressing machine motor M1 ; the calculation method of is as follows:

[0010] When I M1 <I M1 max and L1 < L1max, 3≤K d1 ≤5; where K d1 is a set value related to the mechanical performance of the pressing machine;

[0011] After obtaining the target angular velocity of the first-stage pressing machine motor , the pressing machine speed control module will transmit it to the speed control cabinet of the first-stage pressing machine motor. The speed control cabinet of the first-stage pressing machine motor adjusts the angular velocity of the first-stage pressing machine motor, and the first-stage pressing machine motor angular velocity sensor measures the actual angular velocity of the first-stage pressing machine motor close to

[0012] Preferably, the K d1 The value is 3.5.

[0013] Furthermore, the speed adjustment method of the secondary and subsequent stages of the press is as follows:

[0014] The speed adjustment method of the secondary press is as follows: the maximum angular velocity of the secondary press motor is preset in the press speed control module. Maximum current I of the secondary press motor M2 max and the maximum material level L2max of the secondary press; first determine the current I of the secondary press motor M2 Is it greater than or equal to I M2 max, and determine whether the material level L2 of the secondary press is greater than or equal to L2max;

[0015] When any one of the two conditions is met, the press speed control module controls the target angular velocity of the secondary press motor. equal When I M2 ≥I M2 max or L2 ≥ L2max,

[0016] When both conditions are not met, the press speed control module receives the actual angular velocity of the first-stage press motor measured by the angular velocity sensor of the first-stage press motor. The current I of the first-stage press motor measured by the first-stage press motor current sensor M1 , and combined with the current I of the secondary press motor measured by the secondary press motor current sensor M2 , calculate the target angular velocity of the secondary press motor The calculation method is: 0.9≤K d2 ≤2;

[0017] Get the target angular velocity of the secondary press motor After that, the press speed control module will The speed controller of the secondary press motor adjusts the angular velocity of the secondary press motor, and the angular velocity sensor of the secondary press motor measures the actual angular velocity of the secondary press motor. Close to

[0018] Similarly, the speed adjustment method of the n-stage press is as follows: the maximum angular velocity of the n-stage press motor is preset in the press speed control module Maximum current I of the motor of the n-stage press Mnmax and n-stage press maximum material level L n max; first determine the current I of the n-level press motor Mn Is it greater than or equal to I Mn max, and determine the material level L of the n-stage press n Is it greater than or equal to L? n max;

[0019] When any one of the two conditions is met, the press speed control module controls the target angular velocity of the n-stage press motor. equal When I Mn ≥I Mn max or L n ≥L n When max,

[0020] When both conditions are not met, the press speed control module receives the actual angular velocity of the (n-1) level press motor. and the current I of the (n-1)-stage press motor M(n-1) , and combined with the current I of the n-stage press motor Mn Calculate the target angular velocity of the n-stage press motor The calculation method is: n>2;0.9≤K dn ≤2;

[0021] Get the target angular velocity of the n-stage press motor After that, the press speed control module will The speed control cabinet of the n-stage press motor is used to adjust the angular velocity of the n-stage press motor. The angular velocity sensor of the n-stage press motor measures the actual angular velocity of the n-stage press motor. Close to

[0022] Where K d2 and K dn All are set values ​​and are related to the mechanical properties of the press.

[0023] Preferably, the K d2 The value of K is 1.5; dn The value of is 1.5.

[0024] Further, the nuclear weighing input pressing amount adjustment method is as follows: the output parameter value range is set in the PI controller to be 0~p, the output value is represented by X, the nuclear weighing input pressing amount adjustment range is set in the nuclear weighing input pressing amount adjustment module to be -m%*Tz~m%*Tz; the calculated nuclear weighing input pressing amount adjustment amount is represented by ΔT; the press speed control module sets K S and The PI controller outputs the corresponding value X, and transmits X to the nuclear weighing input adjustment module. The nuclear weighing input adjustment module calculates ΔT based on X, and then calculates T S ,T S =T S +ΔT; where K S is the set value, which is related to the mechanical properties of the press, and 3≤K S ≤4; the nuclear weighing input pressing amount adjustment module will T S ′ is transmitted to the nuclear weighing crushing amount control module, which controls the motor speed control cabinet of the No. 1 sugarcane conveyor and the motor speed control cabinet of the No. 2 sugarcane conveyor to adjust the angular velocity of the motor of the No. 1 sugarcane conveyor and the angular velocity of the motor of the No. 2 sugarcane conveyor respectively, thereby adjusting the instantaneous crushing amount of the No. 2 sugarcane conveyor, so that the instantaneous crushing amount Tz of the No. 2 sugarcane conveyor is close to T S ;

[0025] The specific calculation method of ΔT is as follows:

[0026] When X=0, the adjustment amount of nuclear weighing into the pressing amount ΔT=-m%*Tz;

[0027] When 0<X<(p / 2), ΔT=(-m%*Tz)*[(1-(2X / p)];

[0028] When X = (p / 2), ΔT = 0;

[0029] When (p / 2)<X≤p, ΔT=m%*Tz*[(2X-p) / p].

[0030] Preferably, the K S The value is 3.5.

[0031] Preferably, the value of m is 5.

[0032] The beneficial effects of the present invention compared with the prior art are:

[0033] The present invention realizes data sharing and linkage control between the nuclear scale balance control system and the press control system through the press speed control module, so that the first-stage press can adjust the speed in real time according to the situation of the nuclear scale balance control system, reduce the impact on the press caused by the change of the input volume caused by the change of fiber content, which is beneficial to ensure the smooth operation of the first-stage press, create favorable conditions for the smooth operation of subsequent presses, improve the production efficiency of the press, help promote sugar extraction, reduce the light conversion degree of bagasse, increase production, and can also reduce the moisture content of bagasse, reduce safety hazards, improve the pressing efficiency and pressing effect, and optimize the pressing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of Example 1;

[0035] Figure 2 for Figure 1 Schematic diagram of the control subsystem structure of a certain level of press. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] like Figure 1-2 As shown, an intelligent linkage control system for squeezing and juice extraction in a sugar factory includes a nuclear scale balance control system, a squeezer speed control module and a squeezer control system; the nuclear scale balance control system includes a No. 1 sugarcane conveyor motor angular velocity sensor, a No. 1 sugarcane conveyor motor speed regulating cabinet, a No. 2 sugarcane conveyor motor angular velocity sensor, a No. 2 sugarcane conveyor motor speed regulating cabinet and a nuclear scale input squeezing amount control module respectively connected to the four; the squeezer control system includes several levels of squeezer control subsystems; the squeezer speed control module is respectively connected to the nuclear scale input squeezing amount control module and the squeezer control subsystems at each level; each level of the squeezer control subsystem includes a squeezer motor current sensor, a squeezer motor speed regulating cabinet and a squeezer material level sensor group.

[0039] Specifically, each stage of the press control subsystem also includes a press motor angular velocity sensor.

[0040] Specifically, it further includes a nuclear weigher incoming press amount adjustment system; the nuclear weigher incoming press amount adjustment system includes a PI controller and a nuclear weigher incoming press amount adjustment module; the PI controller is respectively connected to the press speed control module and the nuclear weigher incoming press amount adjustment module; the nuclear weigher incoming press amount adjustment module is connected to the nuclear weigher incoming press amount control module. The nuclear weigher incoming press amount adjustment system can slightly adjust the incoming press amount of the nuclear weigher weighing balance control system in real time, improving the working efficiency of the press.

[0041] Embodiment 2

[0042] A working method of an intelligent linkage control system for sugar mill pressing and juice extraction. The method for adjusting the speed of the first-stage press is as follows: The maximum angular velocity of the first-stage press motor is preset in the press speed control module The maximum current I of the first-stage press motor M1 max and the maximum material level L1max of the first-stage press; first, judge whether the current I of the first-stage press motor M1 is greater than or equal to I M1 max, and judge whether the material level L1 of the first-stage press is greater than or equal to L1max;

[0043] When any one of the two conditions is met, the press speed control module controls the target angular velocity of the first-stage press motor equal to That is, when I M1 ≥I M1 max or L1≥L1max,

[0044] When neither of the two conditions is met, the press speed control module receives the angular velocity of the motor of the No. 2 cane conveyor and the instantaneous incoming press amount Tz of the No. 2 cane conveyor transmitted by the nuclear weigher weighing balance control system and combines the current I of the first-stage press motor measured by the first-stage press motor current sensor M1 to calculate the target angular velocity of the first-stage press motor The calculation method is:

[0045] When I M1 <I M1 max and L1<L1max, K d1 =3.5; where K d1 is a set value related to the mechanical performance of the press;

[0046] After obtaining the target angular velocity of the first-stage press motor , the press speed control module transmits to the speed control cabinet of the first-stage press motor. The speed control cabinet of the first-stage press motor adjusts the angular velocity of the first-stage press motor, and the first-stage press motor angular velocity sensor measures the actual angular velocity of the first-stage press motor Close to

[0047] According to the method of Example 2, when a four-stage press is used, the light conversion degree of the bagasse of the four-stage press reaches 1.9%; the moisture content of the bagasse reaches 47%; when a five-stage press is used, the light conversion degree of the bagasse of the five-stage press reaches 1.7%; the moisture content of the bagasse reaches 47%.

[0048] Example 3

[0049] A working method of an intelligent linkage control system for squeezing and juice extraction in a sugar factory, which adds linkage control of the regulating subsystems of the squeezing machines at various levels on the basis of Example 2.

[0050] The speed adjustment method of the secondary press is as follows: the maximum angular velocity of the secondary press motor is preset in the press speed control module Maximum current I of the motor of the secondary press M2 max and the maximum material level L2max of the secondary press; first determine the current I of the secondary press motor M2 Is it greater than or equal to I M2 max, and determine whether the material level L2 of the secondary press is greater than or equal to L2max;

[0051] When any one of the two conditions is met, the press speed control module controls the target angular velocity of the secondary press motor. equal When I M2 ≥I M2 max or L2 ≥ L2max,

[0052] When both conditions are not met, the press speed control module receives the actual angular velocity of the first-stage press motor measured by the angular velocity sensor of the first-stage press motor. The current I of the first-stage press motor measured by the first-stage press motor current sensor M1 , and combined with the current I of the secondary press motor measured by the secondary press motor current sensor M2 , calculate the target angular velocity of the secondary press motor The calculation method is: K d2 =1.5;

[0053] Get the target angular velocity of the secondary press motor After that, the press speed control module will The speed controller of the secondary press motor adjusts the angular velocity of the secondary press motor, and the angular velocity sensor of the secondary press motor measures the actual angular velocity of the secondary press motor. Close to

[0054] Similarly, the speed adjustment method of the n-stage press is as follows: the maximum angular velocity of the n-stage press motor is preset in the press speed control module Maximum current I of the motor of the n-stage press Mn max and n-stage press maximum material level L n max; first determine the current I of the n-level press motor Mn Is it greater than or equal to I Mn max, and determine the material level L of the n-stage press n Is it greater than or equal to L? n max;

[0055] When any one of the two conditions is met, the press speed control module controls the target angular velocity of the n-stage press motor. equal When I Mn ≥I Mn max or L n ≥L n When max,

[0056] When both conditions are not met, the press speed control module receives the actual angular velocity of the (n-1) level press motor. and the current I of the (n-1)-stage press motor M(n-1) , and combined with the current I of the n-stage press motor Mn Calculate the target angular velocity of the n-stage press motor The calculation method is: n>2;K dn =1.5;

[0057] Get the target angular velocity of the n-stage press motor After that, the press speed control module will The speed control cabinet of the n-stage press motor is used to adjust the angular velocity of the n-stage press motor. The angular velocity sensor of the n-stage press motor measures the actual angular velocity of the n-stage press motor. Close to

[0058] Where K d2 and K dn All are set values ​​and are related to the mechanical properties of the press.

[0059] According to the method of Example 3, when a four-stage press is used, the light conversion degree of the bagasse of the four-stage press reaches 1.6%; the moisture content of the bagasse reaches 46%; when a five-stage press is used, the light conversion degree of the bagasse of the five-stage press reaches 1.4%; the moisture content of the bagasse reaches 46%.

[0060] Example 4

[0061] A working method of an intelligent linkage control system for squeezing juice in a sugar factory, based on Example 3, with the addition of a nuclear weighing input squeezing amount adjustment system;

[0062] The method for adjusting the nuclear weighing input amount is as follows: the output parameter value range is set in the PI controller to be 0~p, the output value is represented by X, the adjustment range of the nuclear weighing input amount is set in the nuclear weighing input amount adjustment module to be -m%*Tz~m%*Tz; the calculated nuclear weighing input amount adjustment amount is represented by ΔT; the press speed control module sets K S and The PI controller outputs the corresponding value X, and transmits X to the nuclear weighing input adjustment module. The nuclear weighing input adjustment module calculates ΔT based on X, and then calculates T S ,T S =T S +ΔT; where K S is the set value, and K S =3.5; the nuclear weighing input pressing amount adjustment module will T S ′ is transmitted to the nuclear weighing crushing amount control module, which controls the motor speed regulating cabinet of No. 1 sugarcane conveyor and the motor speed regulating cabinet of No. 2 sugarcane conveyor to adjust the angular velocity of the motor of No. 1 sugarcane conveyor and the angular velocity of the motor of No. 2 sugarcane conveyor respectively, thereby adjusting the instantaneous crushing amount of No. 2 sugarcane conveyor, so that the instantaneous crushing amount Tz of No. 2 sugarcane conveyor is close to T S ;

[0063] The specific calculation method of ΔT is as follows:

[0064] When X=0, the adjustment amount of nuclear weighing into the pressing amount ΔT=-m%*Tz;

[0065] When 0<X<(p / 2), ΔT=(-m%*Tz)*[(1-(2X / p)];

[0066] When X = (p / 2), ΔT = 0;

[0067] When (p / 2)<X≤p, ΔT=m%*Tz*[(2X-p) / p].

[0068] Preferably, the value of m is 5.

[0069] According to the method of Example 4, when a four-stage press is used, the light conversion degree of the bagasse of the four-stage press reaches 1.6%; the moisture content of the bagasse reaches 46%; when a five-stage press is used, the light conversion degree of the bagasse of the five-stage press reaches 1.4%; the moisture content of the bagasse reaches 46%.

[0070] Example 5

[0071] A working method of an intelligent linkage control system for squeezing and extracting juice in a sugar factory, compared with Example 4, except for K d1 , K S , K d2 and K dn Except that the value of is different from that in Example 4, the other features are the same as those in Example 4. Specifically, K d1 =5, K S =4, K d2 =2, K dn =2.

[0072] According to the method of Example 5, when a four-stage press is used, the light conversion degree of the bagasse of the four-stage press reaches 2.1%; the moisture content of the bagasse reaches 48%; when a five-stage press is used, the light conversion degree of the bagasse of the five-stage press reaches 1.9%; the moisture content of the bagasse reaches 48%.

[0073] Example 6

[0074] A working method of an intelligent linkage control system for squeezing and extracting juice in a sugar factory, compared with Example 4, except for K d1 , K S , K d2 and K dn Except that the value of is different from that in Example 4, the other features are the same as those in Example 4. Specifically, K d1 =3, K S =3, K d2 =0.9, K dn =0.9.

[0075] According to the method of Example 6, when a four-stage press is used, the light conversion degree of the bagasse of the four-stage press reaches 2.2%; the moisture content of the bagasse reaches 48%; when a five-stage press is used, the light conversion degree of the bagasse of the five-stage press reaches 2%; the moisture content of the bagasse reaches 48%.

[0076] The traditional nuclear scale balance control system and the press control system are operated independently, the linkage control is cancelled, and a four-stage press is used for pressing. The light conversion degree of the bagasse of the four-stage press is greater than 2.5%; the moisture content of the bagasse is greater than 50%; if a five-stage press is used for pressing, the light conversion degree of the bagasse of the five-stage press is greater than 2.2%; the moisture content of the bagasse is greater than 50%.

[0077] Conversion and bagasse moisture are important parameters for the pressing process. The lower the conversion, the more completely the sugar is squeezed out, which helps to increase sugar production. Bagasse is often used as a raw material for sugar factories to achieve waste utilization, energy conservation and environmental protection. However, when the moisture content of bagasse is greater than 50%, the combustion effect is poor, and it is even necessary to purchase additional bagasse as a supplementary fuel. The present invention can reduce the moisture content of bagasse to less than 48%, which has a good combustion effect and helps sugar factories reduce fuel costs. In addition, the residual sugar in the bagasse forms colloid when burned and needs to be cleaned regularly. The present invention can reduce the conversion of the four-stage press to less than 2.2%, and the conversion of the five-stage press to less than 2%, which can effectively reduce the number of cleaning times and further reduce production costs.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A working method of an intelligent linkage control system for squeezing juice in a sugar factory, characterized in that: The intelligent linkage control system for squeezing and juice extraction in a sugar factory includes a nuclear scale balance control system, a squeezer speed control module and a squeezer control system; the nuclear scale balance control system includes a No. 1 sugarcane conveyor motor angular velocity sensor, a No. 1 sugarcane conveyor motor speed regulating cabinet, a No. 1 nuclear scale ionization chamber, a No. 2 sugarcane conveyor motor angular velocity sensor, a No. 2 sugarcane conveyor motor speed regulating cabinet, a No. 2 nuclear scale ionization chamber and a nuclear scale input squeezing amount control module respectively connected to the six; the squeezer control system includes several levels of squeezer control subsystems; the squeezer speed control module is respectively connected to the nuclear scale input squeezing amount control module and the squeezer control subsystems at various levels; each level of the squeezer control subsystem includes a squeezer motor current sensor, a squeezer motor speed regulating cabinet and a squeezer material level sensor group; The speed adjustment method of the first-stage press is as follows: the maximum angular velocity of the first-stage press motor is preset in the press speed control module. Maximum current I of the first-stage press motor M1 max and the maximum material level L1max of the first-stage press; first determine the current I of the first-stage press motor M1 Is it greater than or equal to I M1 max, and determine whether the material level L1 of the first-stage press is greater than or equal to L1max; When any one of the two conditions is met, the press speed control module controls the target angular velocity of the first-stage press motor. equal That is, when I M1 ≥I M1 max or L1≥L1max, When both conditions are not met, the press speed control module receives the motor angular velocity of the No. 2 sugarcane conveyor transmitted by the nuclear balance control system. and the instantaneous crushing amount Tz of the No. 2 sugarcane conveyor, combined with the current I of the first-stage crusher motor measured by the first-stage crusher motor current sensor M1 , calculate the target angular velocity of the first-stage press motor The calculation method is: When I M1 <I M1 is less than Imax and L1 is less than L1max, 3 ≤ K d1 ≤ 5; where K d1 is a set value; Get the target angular velocity of the first-stage press motor After that, the press speed control module will The speed control cabinet of the first-stage press motor adjusts the angular velocity of the first-stage press motor, and the angular velocity sensor of the first-stage press motor measures the actual angular velocity of the first-stage press motor.

2. The working method of the intelligent linkage control system for squeezing juice in a sugar factory according to claim 1, characterized in that: Each level of the press control subsystem also includes a press motor angular velocity sensor.

3. The working method of the intelligent linkage control system for squeezing juice in a sugar factory according to claim 2, characterized in that: It also includes a nuclear weighing input pressing amount adjustment system; the nuclear weighing input pressing amount adjustment system includes a PI controller and a nuclear weighing input pressing amount adjustment module; the PI controller is connected to the press speed control module and the nuclear weighing input pressing amount adjustment module respectively; the nuclear weighing input pressing amount adjustment module is connected to the nuclear weighing input pressing amount control module.

4. The working method of the intelligent linkage control system for squeezing juice in a sugar factory according to claim 1, characterized in that: The K d1 The value is 3.

5.

5. A working method of an intelligent linkage control system for squeezing juice in a sugar factory as claimed in claim 2, characterized in that: The speed adjustment method for the secondary and subsequent presses is: The speed adjustment method of the secondary press is as follows: the maximum angular velocity of the secondary press motor is preset in the press speed control module. Maximum current I of the secondary press motor M2 max and the maximum material level L2max of the secondary press; first determine the current I of the secondary press motor M2 Is it greater than or equal to I M2 max, and determine whether the material level L2 of the secondary press is greater than or equal to L2max; When any one of the two conditions is met, the press speed control module controls the target angular velocity of the secondary press motor. equal That is, when I M2 ≥I M2 max or L2 ≥ L2max, When both conditions are not met, the press speed control module receives the actual angular velocity of the first-stage press motor measured by the angular velocity sensor of the first-stage press motor. The current I of the first-stage press motor measured by the first-stage press motor current sensor M1 , and combined with the current I of the secondary press motor measured by the secondary press motor current sensor M2 , calculate the target angular velocity of the secondary press motor The calculation method is: 0.9≤K d2 ≤2; Get the target angular velocity of the secondary press motor After that, the press speed control module will The speed controller of the secondary press motor adjusts the angular velocity of the secondary press motor, and the angular velocity sensor of the secondary press motor measures the actual angular velocity of the secondary press motor. Similarly, the speed adjustment method of the n-stage press is as follows: the maximum angular velocity of the n-stage press motor is preset in the press speed control module Maximum current I of the motor of the n-stage press Mn max and n-stage press maximum material level L n max; first determine the current I of the n-level press motor Mn Is it greater than or equal to I Mn max, and determine the material level L of the n-stage press n Is it greater than or equal to L? n max; When any one of the two conditions is met, the press speed control module controls the target angular velocity of the n-stage press motor. equal That is, when I Mn ≥I Mn max or L n ≥L n When max, When both conditions are not met, the press speed control module receives the actual angular velocity of the (n-1) level press motor. and the current I of the (n-1)-stage press motor M(n-1) , and combined with the current I of the n-stage press motor Mn Calculate the target angular velocity of the n-stage press motor The calculation method is: n>2; 0.9≤K dn ≤2； Get the target angular velocity of the n-stage press motor After that, the press speed control module will The speed control cabinet of the n-stage press motor is used to adjust the angular velocity of the n-stage press motor. The angular velocity sensor of the n-stage press motor measures the actual angular velocity of the n-stage press motor. Where K d2 and K dn All are set values.

6. The working method of the intelligent linkage control system for squeezing juice in a sugar factory according to claim 5, characterized in that: The K d2 The value of K is 1.5; dn The value of is 1.

5.

7. A working method of an intelligent linkage control system for squeezing juice in a sugar factory as claimed in claim 3, characterized in that: The method for adjusting the nuclear weighing input amount is as follows: the output parameter value range is set in the PI controller to be 0 to p, the output value is represented by X, the nuclear weighing input amount adjustment range is set in the nuclear weighing input amount adjustment module to be -m%*Tz to m%*Tz; the calculated nuclear weighing input amount adjustment amount is represented by ΔT; the press speed control module sets K S and The PI controller outputs the corresponding value X, and transmits X to the nuclear weighing input adjustment module. The nuclear weighing input adjustment module calculates ΔT based on X, and then calculates T S ,T S =Tz+ΔT; where K S is the set value, and 3≤K S ≤4; the nuclear weighing input pressing amount adjustment module will T S ' is transmitted to the nuclear weighing crushing amount control module, which controls the motor speed regulating cabinet of the No. 1 sugarcane conveyor and the motor speed regulating cabinet of the No. 2 sugarcane conveyor to adjust the angular velocity of the motor of the No. 1 sugarcane conveyor and the motor of the No. 2 sugarcane conveyor respectively, thereby adjusting the instantaneous crushing amount of the No. 2 sugarcane conveyor; The specific calculation method of ΔT is as follows: When X=0, the adjustment amount of nuclear weighing into the pressing amount ΔT=-m%*Tz; When 0<X<(p / 2), ΔT=(-m%*Tz)*[(1-(2X / p)]; When X = (p / 2), ΔT = 0; When (p / 2)<X≤p, ΔT=m%*Tz*[(2X-p) / p]; The value of m is 5.

8. The working method of the intelligent linkage control system for squeezing juice in a sugar factory according to claim 7, characterized in that: The K S The value is 3.5.

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