Nonlinear sliding-mode control of a multi-motor web-winding system without tension sensor

Winding is an integral operation in almost every roll-to-roll system and the center-wound roll is one of the suitable and general schemes in a winding mechanism. The quality and performance of a center-wound roll are known to be related to the winding tension. In this paper, a novel optimization design method for winding tension using a special network structure is proposed. Firstly, based on the elasticity theory, the correlations between winding tension in the winding section and hoop stress distribution within a center-wound roll are analyzed. In addition, an analysis model for the residual stress due to the winding tension profile is developed. Then, according to the analysis model, the special network structure with back propagation training is developed to minimize the error of lateral residual stress, namely isostress-distribution. Finally, the experimental prototype of a roll-to-roll packaging system for glass-fiber fabric that can measure and control the winding tension is described, and actual experiments were carried out. Results show that the proposed method is very useful for determining the desirable taper-tension profile during the winding process and preventing defects of the center-wound roll.

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“…Furthermore, we substitute constant tension (8) into (6), which means the radial stress for the constant tension profile, that is:…”

Section: Winding Tension T Rmentioning

confidence: 99%

Optimization of taper winding tension in roll-to-roll web systems

Chen

Xiumiao

et al. 2014

Textile Research Journal

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“…As this scheme directly controls torque current of motors, faster dynamic response can be obtained in case of linear speed acceleration or deceleration [13,14]. In [15], a sliding-mode (SM) feedback linearization control system is designed for a multimotor web-winding system. This method consists of a SM velocity controller and two SM tension controllers.…”

Section: Introductionmentioning

confidence: 99%

No-Tension Sensor Closed-Loop Control Method with Adaptive PI Parameters for Two-Motor Winding System

Wang

Nan

Shi

et al. 2018

Mathematical Problems in Engineering

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In a winding system, it is very important to control the tension precisely. Based on the process of rewinding and unwinding, a sensorless tension control method with PI parameters of adaptive speed controllers is proposed in this paper. According to the principle of torque balance, a tension observer is designed to replace the tension sensor, and the observed value instead of the measured value of tension is used as feedback. Then the measurement delay caused by tension sensor is reduced. For the time-variable inertia, Landau discrete-time recursive algorithm is used to estimate the inertias of the rewind and unwind motors. Moreover, the estimated inertias are used to adjust the PI parameters of the speed controllers. As the tension control system has the ability to adapt to the change of inertia, its dynamic performance is improved to some extent. In addition, the proposed sensorless tension control method is simple and easy to implement, which only uses the current and speed signals of the motors without any additional hardware needed. At last, the feasibility and effectiveness of the proposed method are verified by the experimental results.

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“…A review of the web tension control problems can be found in [3]. Fuzzy logic [4] [5], neural network [6] [7], optimal control [8], nonlinear sliding mode [9], control active disturbance rejection control (ADRC) strategy [10] [11], and robust control approaches [12] are used. Robust Lyapunov-based feedback control [13] and multivariable H ∞ controller has been proposed for industrial web transport systems [14] [15].…”

Section: Introductionmentioning

confidence: 99%

Decentralized control design using Integrator Backstepping for controlling web winding systems

Mokhtari

Sicard

2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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Many types of materials are manufactured or processed in the form of a sheet or a web (textile, paper, metal, etc.), which then couples the processing rolls and the associated motor drives. In Winding and web transport systems, the main concern is to control independently speed and tension in spite of disturbances such as radius variations and changes of set point, and to the coupling introduced by the elastic web. So the increasing requirement on the control performance led to investigation for sophisticated control strategies. To improve the overall performance of the winding system, we propose to apply decentralized control based an Integrator Backstepping strategy for controlling web winding systems. The advantage of this type of control is to impose stability properties by building recursively a Lyapunov function for the overall cascade system. Our winding system is simulated in Matlab /Simulink T M environment, the results obtained illustrate the efficiency of the proposed control, with no overshoot, and the rising time is improved with good disturbance rejection comparing with the classical control law (PI controller).

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Nonlinear sliding-mode control of a multi-motor web-winding system without tension sensor

Cited by 90 publications

References 6 publications

Optimization of taper winding tension in roll-to-roll web systems

Optimization of taper winding tension in roll-to-roll web systems

No-Tension Sensor Closed-Loop Control Method with Adaptive PI Parameters for Two-Motor Winding System

Decentralized control design using Integrator Backstepping for controlling web winding systems

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