mill main drive system

Gearless mill drives Grinding ABB

Our GMD eliminates all mechanical components of a conventional mill drive system, such as ring-gear, pinion, gearbox, coupling, motor shaft and motor bearings: By mounting the rotor poles directly onto the mill, the mill itself becomes the rotor of the

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Ring-geared mill drives Grinding ABB

Based on ABB’s 800xA platform, the RMDcockpit is a specific mill application tool comprised of a touch screen panel allowing full access to the main parameters of the drive system as well as to the mill application features such as automatic positioning and creeping modes.

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Torsional Vibration Suppression Control in the Main Drive

01/06/2007· In the rolling mill main drive system, a shaft torsional vibration is often generated when a motor and a roll are connected with a flexible shaft. The state feedback control can effective suppress the torsional vibration of the main drive system of rolling mill. Because of the difficulty of measuring the load speed and the shaft torque, moreover the sensitive of Luenberger observer to the

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Impact of main drive system of 5 m wide and heavy plate

Aiming at the structural characteristics of the drive system of a 5000 mm wide and heavy plate mill, additional moment models acting on the work roll are established, and the influence coefficients of the additional moment of the main drive system are obtained according to Mohr integral method. The screw-down load deviation affected by the additional moment is calculated based on the influence

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Torsional Vibration Control of the Main Drive System of a

01/03/2006· In the main drive system of a rolling mill, shaft torsional vibration is often generated when a motor and a roll are connected with a flexible shaft. State feedback control can effectively suppress the torsional vibration of the main drive system of a rolling mill. Because of the difficulty of measuring the load speed and the shaft torque, and moreover the sensitivity of the Luenberger

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Study on Fault Diagnosis of Rolling Mill Main Drive System

A fault diagnosis approach for main drive system of rolling mill based on EMD (Empirical Mode Decomposition) and fracta1 dimension was proposed. Firstly, EMD was used to decompose the vibration signal of complex machine into a number of intrinsic mode functions (IMF). The root-mean-square value of some IMFs’ fractal dimension which contains main fault information is computed, which is the

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Selecting Inching Drives for Mill and Kiln Applications

the inching reducer and the main drive. Also included in the system, is a brake or backstop to hold the equipment when it is stopped in an unbalanced position and other appropriate safety devices. Typical drive arrangements are illustrated in Figure 1 for kilns and Figure 2 for mills. IC Engine or Motor Backstop Incher Reducer Main Reducer Clutch Gear Pinion Kiln Pillow Blocks Main Motor Cplg

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Nonlinear Torsional Vibration Dynamics Behaviors of

2. Dynamical Model of Rolling Mill’s Multi-DOF Main Drive System. Considering the influence of the joint angle, as shown in Figure 1, the main drive system of rolling mill can be regarded as an -DOF system. This rotational system with a joint angle of is driven at the angular frequency of the motor in the rolling mill.

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Research on Chaotic and Control of the Rolling Mill Main

Rolling mill as a class of key iron and steel industry metallurgical equipment, responsible for the national production of heavy plate strip, its productivity and product quality of course become the focus of attention. In a large rolling mill equipment, rolling mill drive system as the interface with the electrical system, electrical energy into mechanical energy, and rolled steel production

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An analysis on strip vibration coupled with torsional

The main drive system of each stand can be regarded as a mass-spring system in the tandem mill, which mainly composed of inertial components of electromotor, reduction gears and rollers etc., and elastic components of connecting shafts, a dimensional geometric model is shown in Fig. 1. Due to the traction behavior of motor drive, the motor of main drive system could be regarded as a fixed end

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Fuzzy Tuning PID Control of the Rolling Mill Main Drive

The main drive system using for four-high mill is usually a double closed loop DC motor speed regulating system. Generally, the speed controller and current controller are PID controllers, and the parameters of controllers are determined by the engineering design method. Once disturbance occur, the control effects are often just passable. In this paper, fuzzy logic is used to set the parameters of the speed PID

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Torsional Vibration Control of the Main Drive System of a

In the main drive system of a rolling mill, shaft torsional vibration is often generated when a motor and a roll are connected with a flexible shaft. State feedback control can effectively suppress the torsional vibration of the main drive system of a rolling mill. Because of the difficulty of measuring the load speed and the shaft torque, and moreover the sensitivity of the Luenberger observer to the model

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Adaptive Torsional Vibration Control of the Nonlinear

Adaptive Torsional Vibration Control of the Nonlinear Rolling Mill Main Drive System with Performance Constraints and Sensor Errors. December 2020; International Journal of Control Automation and

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Hopf bifurcation control for the main drive delay

13/05/2020· In this paper, the main drive delay system of the rolling mill is considered and a nonlinear controller is designed to control the Hopf bifurcation in the system. We give the conditions for the Hopf bifurcation to exist in the main drive delay system of rolling mill without control and under control, respectively. In the state under feedback control, the occurrence of Hopf bifurcation is effectively

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Fuzzy Self-Tuning PID Control of the Main Drive System

The main drive system used for four-high mill is usually a double closed-loop DC motor speed regulating system. Generally, the speed controller and current controller are proportional-integral-deri...

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Selecting Inching Drives for Mill and Kiln Applications

The inching drive, also known as a barring or auxiliary drive, is an important component of any mill or kiln installation. It is used for maintenance and inspection purposes, as well as an emergency auxiliary drive to keep kilns rotating when the main motor fails. This paper covers what data the end user needs to

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Nonlinear Dynamics of Torsional Vibration for Rolling Mill

The jointed shaft in the drivelines of the rolling mill, with its angle continuously varying in the production, has obvious impact on the stability of the main drive system. Considering the effect caused by the joint angle and friction force of roller gap, the nonlinear vibration model of the main drive system which contains parametric excitation stiffness and nonlinear friction damping was established. The amplitude

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What is an inching drive? Motion Control Tips

02/05/2018· An inching drive is used as an auxiliary system to the main drive for a large machine such as a ball mill, industrial kiln, conveyor, or elevator. Its purpose is to turn the equipment at a speed slower than the normal operating speed — typically 1 to 2 rpm, although fractional rpms are also common — and to do so at high torque — typically 120 percent of the normal drive torque. Three

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Line shaft Wikipedia

In 1828 in Lowell, Massachusetts, Paul Moody substituted leather belting for metal gearing to transfer power from the main shaft running from a water wheel. This innovation quickly spread in the U.S. Flat-belt drive systems became popular in the UK from the 1870s, with the firms of J & E Wood and W & J Galloway & Sons prominent in their introduction. Both of these firms manufactured stationary steam

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Home Radicon Drive Systems An elecon group company

Welcome to Radicon Drive Systems, Inc. Radicon is one of the world’s leading manufacturers of gearing and drive technology. With over 60 years of experience, Radicon is a market leader in the design and manufacture of geared motors, industrial reducers, screw jacks, and couplings. With one of the broadest product lines in the industry, Radicon can offer a world class solution for all of your drive needs. Our

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