Abstract
In this paper, a novel approach to identify the parameters of the unstable systems is considered and the stability analysis of the unstable system has been carried out. The relay feedback approach has been chosen to obtain the sustained oscillations, and single-relay feedback approach is considered for different bench examples for the analysis purpose unlike the conventional Z–N methods. The simplest method to generate sustained oscillation is used. An attempt is made to stabilize the oscillations of the unstable process considered, and the stability checking criterion such as Nyquist plot was also used. Simple relay identification with hysteresis is used to identify the unstable system parameters. In this analysis, a few transfer functions are considered with ratio of time delay to time constant less than 0.693 for analysis purpose. A new method of control is proposed for different unstable systems.
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References
A Thesis on Subspace Identification of Unstable Systems, submitted to IIT Madras by Chinta Sankar Rao
Liu, T., Wang, Q.-G., Huang, H.P.: A tutorial review on process identification from step or relay feedback tests. J. Process Control
Majhi, S.: Advanced control Theory: A Relay Feedback approach, 2nd edn
Åström, K.J., Hägglund, T.: Automatic tuning of simple regulators with specification on phase angle and amplitude margins. Automatica 20, 645–651 (1984)
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Kishore, D., Anand Kishore, K., Panda, R.C. (2019). Stability Analysis and Controller Design for Unstable Systems Using Relay Feedback Approach. In: Bansal, J., Das, K., Nagar, A., Deep, K., Ojha, A. (eds) Soft Computing for Problem Solving. Advances in Intelligent Systems and Computing, vol 816. Springer, Singapore. https://doi.org/10.1007/978-981-13-1592-3_17
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DOI: https://doi.org/10.1007/978-981-13-1592-3_17
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