Compound control for speed and tension multivariable coupling system of reversible cold strip mill

Fang, Yiming; Liu, Le; Li, Jianxiong; Chang, Ru

doi:10.1007/s11771-015-2552-4

Cited by 16 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the complexity of the problem and the coupling of the tensions and velocities of the WWS to study, we use a mathematical model describing the set of physical processes [3]: The mathematical model is composed of three subsystems: the first (sys1) is composed of the state vector [ 1 , 1 ], controlled by the voltage 1 , the second (sys2) a as the state vector [ 2 ], is controlled by 2 and the third subsystem (sys3) a as a state vector [ 3 , 3 ], is controlled by the voltage 3 .…”

Section: A Mathematical Model Of Wwsmentioning

confidence: 99%

Improved Control of the Web Winding System Based on a Super-Twisting Observer

Akil¹,

Touati²,

Zegrari³

et al. 2019

IJRTE

View full text Add to dashboard Cite

The web winding system (WWS) presents a difficult problem at the level of control because of the strong nonlinearities of the models and the effects of internal or external disturbances. To improve the dynamic performance and robustness of the control of WWS, a robust control method based on the first and second order sliding mode algorithm is proposed in this work. The stability of the controllers is proved by the theory of Lyapunov stability using an appropriate switching function. In addition, an observer of super twisting tensions is suggested. The developed method allows a direct estimate "on line" of the tension. Finally, computer simulations are developed to show the performance of the sliding mode control and the proposed nonlinear observer.

show abstract

Section: A Mathematical Model Of Wwsmentioning

confidence: 99%

Improved Control of the Web Winding System Based on a Super-Twisting Observer

Akil¹,

Touati²,

Zegrari³

et al. 2019

IJRTE

View full text Add to dashboard Cite

show abstract

“…Decomposition techniques are widely introduced in several works in order to reduce the control design complexity of large scale systems ( [14]). The system given by (6) can be expanded into larger system then decomposed into simpler subsystems; using transformation matrices T and G we can expand inputs, states and outputs of state space representation of web winding system.…”

Section: Decomposition Conceptmentioning

confidence: 99%

“…are external input signals. If we replace U by its value in the open loop overlapped system given by (6), the system becomes:…”

Section: Overlapping Decomposition Theoriesmentioning

confidence: 99%

“…winding system has been proved in many papers ( [2], [3], [4], and [5]), in [6] multivariable control decoupling has been used in cold strip mill to decompose tensions and speed, however, the controller design is realized based on invariance principle with consideration that interconnection constraints between velocities and tensions are static, thus strong dynamic of interconnection has not been considered. Control complexity of web winding system has been analysed by few researchers, Stankovic el al.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Decentralized Controller Robustness Improvement Using Longitudinal Overlapping Decomposition - Application to Web Winding System

Doghmane¹,

Kidouche²

2018

ElAEE

View full text Add to dashboard Cite

Most of industrial systems are described by complex mathematical models with high order dimensions, wherein control engineering is facing big challenges in designing robust controllers for such type of systems; the main difficulty lies in founding a control structure that is tractable for large scale systems without complicating the controller design from one side, and with preserving controller robustness from the other side. Our study is focused on designing robust controller for industrial systems with complex structure. The robustness of decentralized controller has been improved by using overlapping decomposition approach; the obtained controller has been applied to Web Winding system with longitudinal structure. The designed approach leads to more computational technique, thus to easy-implementable controllers. Moreover, simulation results are presented with different input signals so that the usefulness of the proposed approach can be generalized.

show abstract

“…In [7], the PID control parameters were adjusted online by using the fuzzy logic method, which improved the tracking control precision of the rolling mill speed system effectively, but this control method has an obvious deficiency, that is, the online adjustment time is relatively long. In [9], a compound control method was proposed based on the invariance principle, however, this controller design method needs a repeat differential on the virtual control command in the derivation process, which makes increases the complexity of the controller to a large degree, due to the increase of system relative order; that is, the "differential explosion" phenomenon becomes apparent. In [9], a compound control method was proposed based on the invariance principle, however, this controller design method needs a repeat differential on the virtual control command in the derivation process, which makes increases the complexity of the controller to a large degree, due to the increase of system relative order; that is, the "differential explosion" phenomenon becomes apparent.…”

Section: Introductionmentioning

confidence: 99%

Neural Network Dynamic Surface Backstepping Control for the Speed and Tension System of Reversible Cold Strip Rolling Mill

Liu

Han

Fang

et al. 2017

Asian Journal of Control

Self Cite

View full text Add to dashboard Cite

To weaken the influences of uncertainties and system coupling items on the coordinated tracking control performance of the speed and tension system of a reversible cold strip rolling mill, a control strategy is proposed based on nonlinear disturbance observers (NDOs), dynamic surface backstepping control, and neural network adaptive approximation. First, the transformation form of the system model is given, and then NDOs are developed to counteract the unmatched uncertainties. Next, controllers for the speed and tension system are presented by combining backstepping with dynamic surface control. Again, the neural network adaptive method is used to approximate the matched uncertainties of the system, and the approximation values are introduced into the designed controllers for compensation. Finally, simulation research is carried out on the speed and tension system of a 1422 mm reversible cold strip rolling mill by using the actual data, and the results show the validity of the proposed control strategy in comparison with the decentralized overlapping control strategy.

show abstract

Compound control for speed and tension multivariable coupling system of reversible cold strip mill

Cited by 16 publications

References 7 publications

Improved Control of the Web Winding System Based on a Super-Twisting Observer

Improved Control of the Web Winding System Based on a Super-Twisting Observer

Decentralized Controller Robustness Improvement Using Longitudinal Overlapping Decomposition - Application to Web Winding System

Neural Network Dynamic Surface Backstepping Control for the Speed and Tension System of Reversible Cold Strip Rolling Mill

Contact Info

Product

Resources

About