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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6548
Title: Identification and autotuning of temperature-control system with application to injection molding
Authors: Liu, Tao
Gao, Furong
Yao, Ke
Keywords: Injection-molding machine
Internal model control (IMC)
Step-response identification
Temperature control
Issue Date: May-2009
Citation: IEEE transactions on control systems technology, v. 17, iss. 6, November 2009, p. 1282-1294
Abstract: Motivated by the practical barrel-temperature control of injection molding, this paper proposes two identification methods and a united control scheme for general temperature control design. Based on the unity step response, corresponding to the full heating response in a temperature-control system, an identification method is developed to obtain an integrating model for heating-up control design. By using a relay test around the set-point temperature, another identification method is proposed to obtain a model of stable or integrating type for control-system design to reject load disturbances during system operation. To ensure identification robustness, denoising strategies have also been presented for practical applications with measurement noise. For simplicity of implementation, a united control scheme based on the internal-model-control structure is proposed for both heating-up and steady operations against load disturbance. Analytical controller-design formulas and tuning rules are correspondingly developed for quantitative regulation of the heating-up response and the load-disturbance response for operation. Examples from the recent literature and a practical application to injection molding are performed to demonstrate the effectiveness and merit of the proposed identification methods and control scheme.
Rights: © 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
URI: http://hdl.handle.net/1783.1/6548
Appears in Collections:CBME Journal/Magazine Articles

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