Abstract
This chapter presents a method of designing the centralized control system for the unstable system using the relay auto-tune method incorporating the effect of higher-order harmonics . The method of simultaneous auto-tuning of the four controllers is proposed for designing the TITO centralized control system. The limit cycles are obtained in the outputs with the same frequency but with different amplitude and time shift. The simulation studies on two TITO examples to evaluate the improved performances are presented. The robust behaviour of the proposed controller is analysed by using the inverse maximum singular value versus frequency plot.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Govindhakannan J, Chidambaram M (1997) Multivariable PI control of unstable systems. Proc Cont Qual 10:319–329
Dhanyaram V, Rajapandiyan C, Chidambaram M (2015) Steady-state gain identification and control of multivariable unstable systems. Chem Eng Commun 202(2):151–162
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2018 Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Chidambaram, M., Saxena, N. (2018). Centralized PID Controllers for Unstable System. In: Relay Tuning of PID Controllers . Advances in Industrial Control. Springer, Singapore. https://doi.org/10.1007/978-981-10-7727-2_6
Download citation
DOI: https://doi.org/10.1007/978-981-10-7727-2_6
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-10-7726-5
Online ISBN: 978-981-10-7727-2
eBook Packages: EngineeringEngineering (R0)