AGC. Automatic gauge control (AGC) regulates the thickness at a mill's exit by monitoring thickness and controlling the loading cylinder to achieve the target thickness. AGC relies on thickness feed-forward control using the entry thickness, thickness feedback control based on exit thickness measurements, mass flow control, and speed feed ...
Mechanical Engineering. Mechanical Engineering questions and answers. A model for the automatic gage control (AGC) system of a steel rolling mill is shown in Figure P2.34. The rolls are pressed using a single acting hydraulic actuator with a valve displacement of u. The rolls are displaced through y, thereby pressing the steel that is being rolled.
Various types of our AGC (, AWC, HGC) cylinders have been selling well in the domestic markets as well as in international markets. And we have the complete dynamic testing equipment to work with them. These strong and reliable mill type hydraulic cylinders are built for heavy-duty steel mill applications. They have been heavily tried ...
A fuzzy neural networks control has been developed and applied to the screw-down mechanism control of hydraulic AGC system of cold rolling mill and the simulation experiment results verify the superiority of the proposed compound control to the conventional PID control in the static and dynamic control performance. The hydraulic …
Using hydraulic roll force systems, steelmakers have the ability to control precisely their steel sheet's gauge (thickness). Using feedback or feed-forward systems, a computer's …
The hydraulic automatic gauge control (AGC) of cold rolling mill is directly related to the quality and effectiveness of cold rolling aluminum sheet strips. Traditional PID control becomes difficult to satisfy the necessity of improving the control performance of cold rolling mill. A new variable structure control (VSC) based on a co-ordination …
A new gauge control system has been developed and applied to a five stand tandem cold mill at Kakogawa Works. The system includes the following features: (a) Digital speed regulators which drive the roll with good accuracy; (b) A totally automatic gauge control (TAGC) based on a multivariable control method which regulates the exit …
Automatic Gauge Control (AGC) system is installed in the four-high plate mill, and it is the most important mechanism for dynamic thickness control in conventional rolling mills. Since the AGC system is responsible for maintaining the dynamic performance of the predicted quality of thickness, it is designed to suppress the disturbances during the
The AFC functions are typically performed in the same PC-based computer system hardware used to implement the automatic gauge control (AGC), interstand tension control (ITC) and mill setup models. The following schematic diagram shows the overall layout of the AFC system for a 4-high mill with CVC work roll side shifting.
In this mill, all the AGC control functions are self-adaptive. The AGC performance for all coils rolled from June 16 1998 to April 30 1999 is shown in figure 2 and in table 1.
High-precision suppression technology for the cold rolling mill control precision of hydraulic AGC system is put forward higher requirements. On the basis of related theory introduction, the article respectively analyzes the forward feedback AGC, monitor AGC system and a second flow control AGC system in detail, and expounds the various …
Hydraulic AGC (Automatic Gauge Control) Cylinder and System is constructed by Hydraulic Mill for Sheet Gauge Rolling. We provide Total actuators, for Integrated …
why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of sensors around the mill. Some of the key AGC input parameters are speed and tension. (See Figure 1) Conservation of mass dictates that the mass per unit time entering the mill must equal the
This phenomenon can be explained as follows. For α = 0.8, the compensation of mill modulus control AGC has the low-frequency attenuation characteristics; that is, the mill modulus control AGC can remove the low-frequency incoming thickness deviations. The dynamic response of the mill modulus control AGC …
Comparison of the plate exit thickness hex obtained in pass 2 with the conventional AGC controller (left) with the thickness obtained in pass 3 with the new feedforward control strategy (right) for a plate rolled at the finishing hot rolling mill in Dillingen, Germany. new control strategy pass no. 3 - with feedforward 3200 3000 2800 …
Generally this thickness control strategy is called as monitor automatic gauge control (Mon-AGC). For the sake of mill structure and thickness gage maintenance to avoid damaging the gage meter by the broken strip, generally the gage meter is not installed very near to the mill. For example the distance from the gage meter to the …
It is easy to see why Automatic Gauge Control (AGC) is an essential component of modern rolling mills. Comprehensive AGC algorithms incorporate readings from dozens of …
Accurate mathematical patterning of friction has always been a significant research project in the domains of machinery and control, and has played a crucial role in the analysis, control and compensation of mechanical systems containing friction. For high-property electrohydraulic servo control systems, friction compensation is an urgent …
In this study, the distributed control strategy is proposed for the automatic gauge control(AGC) system, which is a typical multi-agent system. The distributed control protocol is developed with the subspace identification method using the measurements of the local agent and its neighbors directly, without any knowledge of the AGC system …
AGC Ensures Your Production. AGC serves as a effectively mitigates variations in thickness caused by factors such as equipment wear, temperature fluctuations, material properties, and process instabilities. …
The AGC/ITC functions are typically performed in the same PC-based computer system hardware used to implement the automatic sheet flatness control (AFC) and mill setup models. Before a coil is processed, the AGC/ITC system receives rolling schedule information from the mill scheduling system or via manual data entry. This information …
The initial slab thickness is around 500 mm. The target thickness is typically 5 to 10 millimeters, and then the product is coiled. To reach this thickness, the strip has to be rolled several ...
The novel GM-AGC system has been applied successfully in a hot strip mill, the application results show that the thickness control precision is improved significantly, with the novel GM-AGC system ...
In this paper we will describe some substantial improvements made in strip thickness control in cold rolling using the self-tuning control system, developed by First Control.
Thickness accuracy is the most important product quality target of cold rolling strip, and AGC control is the key technologies to determine thickness accuracy in …
Gives a new control method, which is used in the AGC systems of cold rolling mill. To the shortage of control method which is used now, analyses and synthesize dynamic mathematical model of AGC ...
The signal is compared with a pressure given signal, and the servo valve is driven by the difference between them, and the pressure is adjusted to make the difference go to zero. The pressure control is mainly used for the pressure AGC control, the rolling mill prepressure and the zeroing, the rolling mill debugging and the fault diagnosis.
The hydraulic automatic gauge control (AGC) of cold rolling mill is directly related to the quality and effectiveness of cold rolling aluminum sheet strips. Traditional PID control becomes ...
Technology. Automatic Gauge Control is a technology used across diverse industrial processes to automatically regulate the thickness or gauge of materials being processed, such as metal sheets or strips.The primary objective of AGC is to consistently uphold a desired target thickness throughout the entire production process.
The hydraulic AGC system of aluminum cold rolling mill is directly related to the quality and effectiveness of cold rolling aluminum sheet strips. Traditional PID control becomes difficult to satisfy the necessity of improving the control performance of cold rolling mill. High precision, simple and effective control strategies are very important for the hydraulic …
In order to improve the control performance of strip rolling mill, theoretical model of the hydraulic gap control (HGC) system was established. HGC system offline identification scheme was designed for a tandem cold strip mill, the system model parameters were identified by ARX model, and the identified model was verified. Taking …
This mill, replacing the existing mill, went into commercial operation on August 1, 1984. The mill's high quality control systems have enabled us to achieve a high degree of accuracy in a number of areas, including, strip thickness, or strip crown and shape. The author and his tea~ have developed an absolute mode AGC system that has ...
The robustness and response of monitoring AGC is improved by development of feedback-assisted iterative learning control strategy for PI-P Smith predictor, and results indicate that this system remains stable during model mismatching. The performance of Smith prediction monitoring automatic gauge control (AGC) system is influenced by …
This. paper presents a new anti-interference strategy for AGC control of 20-Hi cold reversing mill. The proposed. algorithm introduces a united dynamic weights algorithm of feed forward-mass flow to avoid the complex. interference problem in AGC control, the relevant control strategy is provided to eliminate the adverse effects.