System and method for preventing large speed feedback deviation and large current fluctuation of rolling mill motor

Abstract

The present invention provides a system and method for preventing a large speed feedback deviation and a large current fluctuation of a rolling mill motor, and relates to the technical field of steel production, including a speed shaft system accuracy and plane system, an output shaft reference balance control system, a dynamic displacement deviation and test system, a multi-dimensional balance and main load optimization system, wherein the speed shaft system accuracy and plane system is used to collect feedback speed deviation, detect and quantify the initial accuracy data of the encoder installation shaft, and process the flatness; the present invention decomposes the balance system of the entire encoder shaft into quantitative subsystems, specifically decomposes it into an upper and lower balance system, a left and right balance system, and an axial vertical balance system, and then adjusts and optimizes the above subsystems one by one, and then performs overall balance adjustment and optimization of the entire system, thereby ensuring that each subsystem is balanced with zero error and achieving the overall optimal balance with zero error of the entire system.

Description

Technical Field

[0001] The invention relates to the technical field of steel production, and in particular to a system and method for preventing large speed feedback deviation and large current fluctuation of a rolling mill motor. Background Art

[0002] After the replacement of the intermediate rolling motor of the high-speed line of the steel mill, the current fluctuated greatly, with the upper and lower range values ​​reaching 80%, which had a great impact on the safe and stable operation of the equipment. The most serious problem was that it was easy to cause the transmission system to trip, which led to steel piling on site and production interruption.

[0003] Through continuous technical research and elimination of locking and re-optimization steps, the problem points were identified. The reason for the large current fluctuations and speed feedback fluctuations after the motor was replaced was that the encoder's installation shaft up and down balance system, left and right balance system, and axial vertical balance system had serious errors and deviations, which in turn led to serious errors and deviations in the encoder during speed acquisition, which were transmitted to the DC speed control system, affecting the smooth production and the safe and stable operation of the equipment. Therefore, the present invention proposes a system and method for preventing large deviations in speed feedback and large current fluctuations in the rolling mill motor to solve the problems existing in the prior art. Summary of the invention

[0004] In response to the above problems, the present invention proposes a system and method for preventing large speed feedback deviations and large current fluctuations of rolling mill motors. The system and method for preventing large speed feedback deviations and large current fluctuations of rolling mill motors ensure that each subsystem is balanced with zero error, while achieving the overall optimal balance with zero error of the entire system.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a system to prevent large speed feedback deviation and large current fluctuation of a rolling mill motor, including a speed shaft system accuracy and plane system, an output shaft reference balance control system, a dynamic displacement deviation and test system, a multi-dimensional balance and main load optimization system, the speed shaft system accuracy and plane system is used to collect feedback speed deviation, detect and quantify the initial accuracy data of the encoder installation shaft, and process the flatness; the output shaft reference balance control system is used to control the upper and lower balance systems and left and right balance systems of the encoder installation shaft with the motor output shaft as the reference line;

[0006] The dynamic displacement deviation and testing system is used to adjust the dynamic axial displacement deviation of the planar system until the dynamic axial displacement deviation is zero, and is also used to perform dynamic performance testing and comprehensive linkage balance adjustment on the main equipment; the multi-dimensional balancing and main bearing optimization system is used to perform zero deviation precision adjustment on the main bearing equipment, and is also used to perform standard interval testing, measurement and adjustment on the output shaft end face system of the main bearing equipment complex.

[0007] Further improvements are as follows: in the speed axis system accuracy and plane system, the flatness is processed specifically as follows: the entire encoder axis system is initialized, the entire base surface is cleared and the bumps on the circular base are removed; and in the speed axis system accuracy and plane system, the feedback speed deviation refers to the deviation between the set speed of the rolling mill drive DC motor and the speed fed back to the system by the encoder sensor through the transmission system, the deviation is collected and displayed by the human-machine system, and the deviation is calculated by coaxial data comparison; the encoder mounting shaft is located at the end of the output shaft of the main bearing equipment, and the speed is collected through the coaxial transmission system; flatness refers to the flatness system control based on the concave shaft seat mounting body at the non-load end of the motor, through the flatness test of the entire plane and all angles and the physical inlay test of the plane ring, the flatness displacement deviation and vertical deviation are quantitatively measured and systematically zero-error adjusted.

[0008] Further improvements are as follows: the speed axis system accuracy and plane system consists of a speed axis system accuracy acquisition system, a speed axis system accuracy measurement system, a speed axis system accuracy multi-dimensional correction system, a speed axis system accuracy precise quantification and numerical system, a plane system convexity and concave detection and processing system, a plane system circumferential edge flatness detection and processing system, and a plane system verticality detection and processing system.

[0009] Further improvement lies in that: in the output shaft reference balance control system, the up and down balance system and the left and right balance system of the encoder's mounting shaft are regulated until the up and down and left and right jump displacements reach zero error; wherein, the up and down balance system is a quantified system for up and down displacement, up and down vibration, and up and down concave and convex shaking with the motor output shaft as the reference line; the left and right balance system is a quantified system for left and right displacement, left and right vibration, and left and right concave and convex shaking with the motor output shaft as the reference line.

[0010] A further improvement is that the output shaft reference balance control system consists of an output shaft reference foundation and base system, an output shaft reference dynamic fine-tuning system, an output shaft reference horizontal direction precise quantitative adjustment system, an output shaft reference vertical direction precise quantitative adjustment system, a balance control dynamic fine-tuning system, and a balance control dynamic equalization and quantitative scale system.

[0011] Further improvements are as follows: in the dynamic displacement deviation and test system, the dynamic performance test is carried out on the main equipment, and during the test, the upper and lower balance systems, the left and right balance systems, and the axial vertical balance system are comprehensively linked and balanced and adjusted; and in the dynamic displacement deviation and test system, the plane system is: a detection and quantification system based on the plane convexity and the circumferential edge convexity, with the center line of the shaft system as the vertical expansion flatness and cleanliness; the dynamic axial displacement deviation refers to the balance error of the shaft end when the rolling mill is running, including the no-load state and the full-load state; the main equipment refers to the main motor equipment of the direct drive rolling mill; the comprehensive linkage balance refers to the overall balance performance including the main equipment and the speed measuring load-bearing shaft.

[0012] Further improvements are: the dynamic displacement deviation and testing system consists of a dynamic displacement deviation acquisition and quantification conversion system, a dynamic displacement deviation signal recognition and enhancement system, a dynamic displacement deviation rotation process differentiated level quantification system, a dynamic displacement deviation rotation process quantification data recognition system, a dynamic deviation test and interface connection system, and a dynamic deviation test data export system.

[0013] Further improvements are as follows: the multi-dimensional balancing and main load-bearing optimization system is used to perform zero-deviation precision adjustment on the upper and lower balancing system, the left and right balancing system, and the axial vertical balancing system of the main load-bearing equipment; and in the multi-dimensional balancing and main load-bearing optimization system, the main load-bearing equipment refers to the rolling mill transmission drive equipment connected to the reducer drive shaft, which transmits torque during the driving process; the output shaft end face system refers to the spacing distance between the vertical plane of the output shaft based on the main load-bearing equipment complex and the end face of the output shaft of the mechanical reducer device, which is used to buffer axial shaking.

[0014] Further improvements are as follows: the multi-dimensional balance and main load-bearing optimization system consists of a multi-dimensional balance comprehensive measurement, control and pre-adjustment system, a multi-dimensional balance precise quantitative data identification system, a multi-dimensional balance subsystem fine-tuning system, a multi-dimensional balance systematic adjustment and optimization system, a main load-bearing optimization and dynamic correction system, a main load-bearing optimization adjustment and an overall correction unit for the entire system.

[0015] The method for preventing a rolling mill motor from having a large speed feedback deviation and a large current fluctuation comprises the following steps:

[0016] Step 1: Collect the feedback speed deviation, and then detect and quantify the initial accuracy data of the encoder installation shaft;

[0017] Step 2: To process the flatness, first initialize the entire encoder axis system, then clear the entire base surface and remove the bumps on the circular base;

[0018] Step 3: Using the motor output shaft as the reference line, adjust the upper and lower balancing system of the encoder installation shaft to make the upper and lower jump displacement zero error;

[0019] Step 4: Using the motor output shaft as the reference line, adjust the left and right balance system of the encoder installation shaft to make the left and right runout displacement zero error;

[0020] Step 5: Adjust the dynamic axial displacement deviation of the plane system until the dynamic axial displacement deviation is zero;

[0021] Step 6: Perform dynamic performance test on the main equipment, and make comprehensive linkage balance adjustment on the up-down balance system, left-right balance system, and axial vertical balance system during the test;

[0022] Step 7: Perform zero deviation precision adjustment on the upper and lower balance system, left and right balance system, and axial vertical balance system of the main bearing equipment;

[0023] Step 8: Conduct standard interval testing, measurement and adjustment on the output shaft end face system of the main load-bearing equipment complex.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention decomposes the balance system of the entire encoder shaft into quantitative subsystems, specifically into an upper and lower balance system, a left and right balance system, and an axial vertical balance system. The above subsystems are then adjusted and optimized one by one, and then the overall balance adjustment and optimization of the entire system are performed, ensuring that each subsystem is balanced with zero error while achieving the overall optimal balance of the entire system with zero error.

[0026] 2. The present invention regards the main load-bearing device as one of the components of the balancing system, performs system balancing and zero-deviation adjustment and optimization on the main load-bearing device, thereby achieving overall systemic zero-error balance of the entire associated equipment body, improving the speed feedback accuracy of the equipment, eliminating abnormal current fluctuations, and ensuring the long-term safe and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a system schematic diagram of the present invention;

[0028] Figure 2 The present invention is a flow chart of the method. DETAILED DESCRIPTION

[0029] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0030] Embodiment 1

[0031] according to Figure 1 As shown, this embodiment proposes a system to prevent large speed feedback deviation and large current fluctuation of the rolling mill motor, including a speed shaft system accuracy and plane system, an output shaft reference balance control system, a dynamic displacement deviation and test system, and a multi-dimensional balance and main load optimization system:

[0032] The speed axis system accuracy and plane system is used to first collect the feedback speed deviation, and then detect and quantify the initial axis accuracy data of the encoder installation axis. Then the flatness is processed, specifically: first initialize the entire encoder axis system, then clear the entire base surface and remove the concave and convex of the circular base;

[0033] Feedback speed deviation refers to the deviation between the set speed of the rolling mill drive DC motor and the speed fed back to the system by the encoder sensor through the transmission system. The deviation is mainly used to collect and display data in the human-machine system. The deviation can be clearly and quantitatively calculated through coaxial data comparison. The encoder mounting shaft is located at the end of the output shaft of the main bearing equipment. Through the coaxial transmission system, accurate quantitative collection of the speed can be achieved. Flatness refers to the flatness system control based on the concave shaft seat mounting body at the non-load end of the motor. Through the flatness test of the entire plane and all angles and the physical inlay test and optimization of the flat ring, the accurate quantitative measurement of the flatness displacement deviation and vertical deviation and the systematic zero error adjustment and processing can be achieved, thereby achieving the optimal adjustment of the entire flatness, that is, zero offset and zero balance error;

[0034] The output shaft reference balance control system is used to first optimize the upper and lower balance system of the encoder installation shaft with the motor output shaft as the reference line, ensuring that zero error of upper and lower jump displacement is achieved after optimization. Then, the left and right balance system of the encoder installation shaft is optimized with the motor output shaft as the reference line, ensuring that zero error of left and right jump displacement is achieved after optimization;

[0035] The up-down balance system is a precise quantitative system for up-down displacement, up-down vibration, up-down concave-convex shaking based on the motor output shaft as the reference line. When the up-down balance system has deviations and displacement errors, it will cause the rolling mill drive motor to have systematic speed feedback interference of up-down displacement, up-down vibration, up-down concave-convex shaking during normal rolling, thus affecting the normal precise quantitative feedback of speed; the left-right balance system is a precise quantitative system for left-right displacement, left-right vibration, left-right concave-convex shaking based on the motor output shaft as the reference line. When the left-right balance system has deviations and displacement errors, it will cause the rolling mill drive motor to have systematic speed feedback interference of left-right displacement, left-right vibration, left-right concave-convex shaking during normal rolling, thus affecting the normal precise quantitative feedback of speed;

[0036] The dynamic displacement deviation and test system is used to first re-optimize the plane system, mainly to optimize and adjust the dynamic axial displacement deviation of the plane system until the dynamic axial displacement deviation is zero. Then the main equipment is tested for dynamic performance, and during the test, the up-down balance system, the left-right balance system, and the axial vertical balance system are adjusted and optimized for comprehensive linkage balance;

[0037] The plane system is a detection and precise quantification system based on the convexity and concavity of the plane and the convexity and concavity of the circumferential edge. Such plane dimensions are mainly reflected in the flatness and cleanliness of the vertical extension with the center line of the shaft system as the center line. Dynamic axial displacement deviation refers to the precise quantitative collection and corresponding optimization and adjustment of the shaft end balance error when the rolling mill is running, including no-load and full-load states; the main equipment refers to the main motor equipment of the direct drive rolling mill, and the main motor equipment includes the motor body, motor coupling, motor output shaft, motor armature connection system, motor excitation connection system, motor water cooling air inlet end, motor water cooling air outlet end, air-water cooling system, air-water cooling water inlet system, and air-water cooling water outlet system. Comprehensive linkage balance refers to the overall balancing performance including the main equipment and the speed measurement load-bearing shaft;

[0038] The multi-dimensional balancing and main load-bearing optimization system is used to firstly adjust and optimize the zero deviation precision of the upper and lower balancing system, the left and right balancing system, and the axial vertical balancing system of the main load-bearing equipment. Then, the output shaft end surface system of the main load-bearing equipment complex is tested, measured, adjusted, and optimized in the standard interval;

[0039] The main bearing equipment refers to the rolling mill transmission drive equipment connected to the reducer drive shaft. The main torque is transmitted during the driving process. Therefore, in order to ensure the maximum efficiency of torque transmission, it is necessary to ensure the zero deviation and zero error of the balance deviation and error of the main bearing equipment, thereby ensuring the maximum efficiency of electromechanical torque transmission and the maximum efficiency of the rolling mill rotation; the output shaft end face system refers to the spacing distance between the vertical plane of the output shaft based on the main bearing equipment complex and the end face of the output shaft of the mechanical reduction equipment. Such a fixed spacing distance can buffer the axial shaking during the normal operation of the equipment, thereby effectively avoiding the wear and extrusion of the equipment in the rotating state, thereby ensuring the best dynamic performance of the equipment.

[0040] Embodiment 2

[0041] according to Figure 1 As shown, this embodiment proposes a system for preventing large speed feedback deviation and large current fluctuation of the rolling mill motor, including a speed shaft system accuracy and plane system, an output shaft reference balance control system, a dynamic displacement deviation and test system, a multi-dimensional balance and main load optimization system;

[0042] The speed shaft system accuracy and plane system is used to collect feedback speed deviation, detect and quantify the initial accuracy data of the encoder installation shaft, and process the flatness; the speed shaft system accuracy and plane system consists of a speed shaft system accuracy acquisition system, a speed shaft system accuracy measurement system, a speed shaft system accuracy multi-dimensional correction system, a speed shaft system accuracy precision quantification and numerical system, a plane system convex and concave detection and processing system, a plane system circumferential edge flatness detection and processing system, and a plane system verticality detection and processing system. The speed shaft system accuracy and plane system can achieve zero error for the shaft system and plane system through a precise measurement and control system and a full range of optimization and adjustment designs;

[0043] The output shaft reference balance control system is used to control the upper and lower balance systems and left and right balance systems of the encoder installation shaft with the motor output shaft as the reference line; the output shaft reference balance control system is composed of the output shaft reference foundation and base system, the output shaft reference dynamic fine-tuning system, the output shaft reference horizontal direction precise quantitative adjustment system, the output shaft reference vertical direction precise quantitative adjustment system, the balance control dynamic fine-tuning system, the balance control dynamic equalization and quantitative scale system. The output shaft reference balance control system achieves zero error of the balance system through the dual control of reference balance control and dynamic balance, which effectively supports the precision and efficiency of the rolling mill transmission;

[0044] The dynamic displacement deviation and test system is used to adjust the dynamic axial displacement deviation of the planar system until the dynamic axial displacement deviation is zero, and is also used to perform dynamic performance testing and comprehensive linkage balance adjustment on the main equipment; the dynamic displacement deviation and test system consists of a dynamic displacement deviation acquisition and quantification conversion system, a dynamic displacement deviation signal recognition and enhancement system, a dynamic displacement deviation rotation process quantification system, a dynamic displacement deviation test and interface connection system, and a dynamic deviation test data export system. The dynamic displacement deviation and test system achieves dynamic adjustability and controllability of the dynamic deviation through innovative design and optimization, further improving the control accuracy of the system;

[0045] The multi-dimensional balancing and main load-bearing optimization system is used to perform zero-deviation precision adjustment on the main load-bearing equipment, and is also used to perform standard interval testing, measurement and adjustment on the output shaft end surface system of the main load-bearing equipment complex; the multi-dimensional balancing and main load-bearing optimization system consists of a multi-dimensional balancing comprehensive measurement and control and pre-adjustment system, a multi-dimensional balancing precise quantitative data identification system, a multi-dimensional balancing subsystem fine-tuning system, a multi-dimensional balancing systematic adjustment and optimization system, a main load-bearing optimization and dynamic correction system, a main load-bearing optimization adjustment and overall correction unit for the entire system. The multi-dimensional balancing and main load-bearing optimization system achieves zero-error control of speed acquisition and feedback through the overall comprehensive control of dynamic balance and static balance, as well as the balanced adjustment and optimization of the process.

[0046] Embodiment 3

[0047] according to Figure 2 As shown, this embodiment proposes a method for preventing a large deviation in speed feedback of a rolling mill motor and a large current fluctuation, comprising the following steps:

[0048] Step 1: Collect the feedback speed deviation, and then detect and quantify the initial accuracy data of the encoder installation shaft;

[0049] Step 2: To process the flatness, first initialize the entire encoder axis system, then clear the entire base surface and remove the bumps on the circular base;

[0050] Step 3: Using the motor output shaft as the reference line, adjust the upper and lower balancing system of the encoder installation shaft to make the upper and lower jump displacement zero error;

[0051] Step 4: Using the motor output shaft as the reference line, adjust the left and right balance system of the encoder installation shaft to make the left and right runout displacement zero error;

[0052] Step 5: Adjust the dynamic axial displacement deviation of the plane system until the dynamic axial displacement deviation is zero;

[0053] Step 6: Perform dynamic performance test on the main equipment, and make comprehensive linkage balance adjustment on the up-down balance system, left-right balance system, and axial vertical balance system during the test;

[0054] Step 7: Perform zero deviation precision adjustment on the upper and lower balance system, left and right balance system, and axial vertical balance system of the main bearing equipment;

[0055] Step 8: Conduct standard interval testing, measurement and adjustment on the output shaft end face system of the main load-bearing equipment complex.

[0056] The present invention decomposes the balance system of the entire encoder shaft into quantitative subsystems, specifically into the upper and lower balance systems, the left and right balance systems, and the axial vertical balance systems, and then adjusts and optimizes the above subsystems one by one, and then performs overall balance adjustment and optimization of the entire system, while ensuring that each subsystem is balanced with zero error, and at the same time achieving the overall optimal balance of the entire system with zero error. In addition, the present invention regards the main bearing device as one of the components of the balance system, performs system balance and zero deviation adjustment and optimization on the main bearing device, and then achieves the overall systematic zero error balance of the entire associated device body, improves the speed feedback accuracy of the device, eliminates abnormal current fluctuations, and ensures the long-term safe and stable operation of the device. Specifically: The present invention can achieve zero error of the shaft system and the plane system through a precise measurement and control system and an all-round optimization and adjustment design; the present invention achieves zero error of the balance system through dual control of reference balance control and dynamic balance, and effectively supports the precision and efficiency of the rolling mill transmission; the present invention achieves dynamic adjustability and controllability of dynamic deviation through innovative design and innovative optimization, and further improves the control accuracy of the system; the present invention achieves zero error control of speed acquisition and feedback through the overall comprehensive control of dynamic balance and static balance, and the balanced adjustment and optimization of the process.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A system to prevent large speed feedback deviation and current fluctuation of rolling mill motor, including speed shaft system accuracy and plane system, output shaft reference balance control system, dynamic displacement deviation and test system, multi-dimensional balance and main load optimization system, characterized by: The speed shaft system accuracy and plane system is used to collect feedback speed deviation, detect and quantify the initial accuracy data of the encoder installation shaft, and process the flatness. The feedback speed deviation refers to the deviation between the set speed of the rolling mill drive DC motor and the speed fed back to the system by the encoder sensor through the transmission system. The deviation is collected and displayed by the human-machine system, and the deviation is calculated by coaxial data comparison; The output shaft reference balance control system is used to control the upper and lower balance systems and the left and right balance systems of the encoder installation shaft with the motor output shaft as the reference line; The dynamic displacement deviation and test system is used to adjust the dynamic axial displacement deviation of the plane system until the dynamic axial displacement deviation is zero, and is also used to perform dynamic performance testing and comprehensive linkage balance adjustment on the main equipment. The plane system is: a detection and quantification system based on plane convexity and circumferential rim convexity, with the center line of the shaft system as the vertical expansion flatness and cleanliness; dynamic axial displacement deviation refers to the balance error of the shaft end when the rolling mill is running, including no-load state and full-load state; the main equipment refers to the main motor equipment of the direct drive rolling mill; the comprehensive linkage balance refers to the overall balance performance including the main equipment and the speed measurement bearing shaft; The multi-dimensional balancing and main bearing optimization system is used to perform zero-deviation precision adjustment on the main bearing equipment, and is also used to perform standard interval testing, measurement and adjustment on the output shaft end surface system of the main bearing equipment complex; In the output shaft reference balance control system, the up-down balance system and the left-right balance system of the encoder installation shaft are regulated until the up-down and left-right jump displacements reach zero error; wherein the up-down balance system is a quantified system for up-down displacement, up-down vibration, and up-down concave-convex shaking with the motor output shaft as the reference line; the left-right balance system is a quantified system for left-right displacement, left-right vibration, and left-right concave-convex shaking with the motor output shaft as the reference line; The multi-dimensional balancing and main load-bearing optimization system is used to perform zero-deviation precision adjustment on the upper and lower balancing systems, left and right balancing systems, and axial vertical balancing systems of the main load-bearing equipment; and in the multi-dimensional balancing and main load-bearing optimization system, the main load-bearing equipment refers to the rolling mill transmission drive equipment connected to the reducer drive shaft, which transmits torque during the driving process; the output shaft end face system refers to the spacing distance between the vertical plane of the output shaft based on the main load-bearing equipment complex and the end face of the output shaft of the mechanical reducer, which is used to buffer axial shaking.

2. The system for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor according to claim 1 is characterized in that: In the speed axis accuracy and plane system, the flatness is processed specifically as follows: the entire encoder axis is initialized, the entire base surface is cleared and the bumps on the circular base are removed; the encoder mounting shaft is located at the end of the output shaft of the main bearing device, and the speed is collected through the coaxial transmission system; flatness refers to the flatness system control based on the concave shaft seat mounting body at the non-load end of the motor, through the flatness test of the entire plane and all angles and the physical inlay test of the plane ring, the flatness displacement deviation and vertical deviation are quantitatively measured and systematically zero-error adjusted.

3. The system for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor according to claim 2 is characterized in that: The speed axis system accuracy and plane system consists of a speed axis system accuracy acquisition system, a speed axis system accuracy measurement system, a speed axis system accuracy multi-dimensional correction system, a speed axis system accuracy precise quantification and numerical system, a plane system convexity and concave detection and processing system, a plane system circumferential edge flatness detection and processing system, and a plane system verticality detection and processing system.

4. The system for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor according to claim 1, characterized in that: The output shaft reference balance control system consists of an output shaft reference foundation and base system, an output shaft reference dynamic fine-tuning system, an output shaft reference horizontal direction precise quantitative adjustment system, an output shaft reference vertical direction precise quantitative adjustment system, a balance control dynamic fine-tuning system, and a balance control dynamic equalization and quantitative scale system.

5. The system for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor according to claim 1, characterized in that: In the dynamic displacement deviation and test system, the main equipment is tested for dynamic performance, and during the test, the up and down balance system, the left and right balance system, and the axial vertical balance system are subjected to comprehensive linkage balance adjustment.

6. The system for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor according to claim 4, characterized in that: The dynamic displacement deviation and testing system consists of a dynamic displacement deviation acquisition and quantification conversion system, a dynamic displacement deviation signal recognition and enhancement system, a dynamic displacement deviation rotational speed differentiation level quantification system, a dynamic displacement deviation rotation process quantification data recognition system, a dynamic deviation test and interface connection system, and a dynamic deviation test data export system.

7. The system for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor according to claim 1, characterized in that: The multi-dimensional balance and main load-bearing optimization system consists of a multi-dimensional balance comprehensive measurement, control and pre-adjustment system, a multi-dimensional balance precise quantitative data identification system, a multi-dimensional balance subsystem fine-tuning system, a multi-dimensional balance systematic adjustment and optimization system, a main load-bearing optimization and dynamic correction system, a main load-bearing optimization adjustment and overall correction unit of the entire system.

8. A method for preventing large deviation in speed feedback and large current fluctuation of a rolling mill motor, characterized in that: The system for preventing large speed feedback deviation and large current fluctuation of the rolling mill motor according to claim 1 is implemented, comprising the following steps: Step 1: Collect the feedback speed deviation, and then detect and quantify the initial accuracy data of the encoder installation shaft; Step 2: To process the flatness, first initialize the entire encoder axis system, then clear the entire base surface and remove the bumps on the circular base; Step 3: Using the motor output shaft as the reference line, adjust the upper and lower balancing system of the encoder installation shaft to make the upper and lower jump displacement zero error; Step 4: Using the motor output shaft as the reference line, adjust the left and right balance system of the encoder installation shaft to make the left and right runout displacement zero error; Step 5: Adjust the dynamic axial displacement deviation of the plane system until the dynamic axial displacement deviation is zero; Step 6: Perform dynamic performance test on the main equipment, and make comprehensive linkage balance adjustment on the up-down balance system, left-right balance system, and axial vertical balance system during the test; Step 7: Perform zero deviation precision adjustment on the upper and lower balance system, left and right balance system, and axial vertical balance system of the main bearing equipment; Step 8: Conduct standard interval testing, measurement and adjustment on the output shaft end face system of the main load-bearing equipment complex.

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