Weighted multiple model adaptive LQG and PI control for a hydro turbine plant

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Hydro turbines are known to be highly nonlinear plants with uncertainties especially in the presence of large or abrupt disturbances. The presence of some nonlinear components within the system also increases its complexity. In this study, weighted multiple model adaptive control (MMAC), is proposed to be used as a controller for such systems, with the aim of providing desirable characteristics such as robustness and stability. To assure stability, the system was designed in accordance with the virtual equivalence system and adaptive mixing control criteria. Two different control structures, namely the LQG/LTR and PI controllers were optimized to meet these requirements and tested through simulations. For each control structure, four different linear compensators were tuned according to specific percentage load disturbances, and each compensator corresponds to an a priory identified candidate linear model of the plant. The LQG/LTR and PI controllers were designed for robustness and blended into the MMAC scheme. The plant operation, subjected to different disturbance conditions, was simulated. From the obtained results, the LQG/LTR scheme exhibited good performance for smooth disturbance changes but fluctuated in situations with sudden changes. The PI controller showed good performance for both, smooth varying and sudden applied disturbances.

Original languageEnglish
Title of host publication2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012
Pages656-661
Number of pages6
Publication statusPublished - 2012
Event2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012 - Tokyo
Duration: 18 Sep 201221 Sep 2012

Other

Other2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012
CityTokyo
Period18/9/1221/9/12

Fingerprint

Turbines
Controllers
Robustness (control systems)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Mechanical Engineering

Cite this

Hamarasheed, C., Mohamed Haris, S., & Mohd Nopiah, Z. (2012). Weighted multiple model adaptive LQG and PI control for a hydro turbine plant. In 2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012 (pp. 656-661). [6329659]

Weighted multiple model adaptive LQG and PI control for a hydro turbine plant. / Hamarasheed, Chalang; Mohamed Haris, Sallehuddin; Mohd Nopiah, Zulkifli.

2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012. 2012. p. 656-661 6329659.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hamarasheed, C, Mohamed Haris, S & Mohd Nopiah, Z 2012, Weighted multiple model adaptive LQG and PI control for a hydro turbine plant. in 2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012., 6329659, pp. 656-661, 2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012, Tokyo, 18/9/12.
Hamarasheed C, Mohamed Haris S, Mohd Nopiah Z. Weighted multiple model adaptive LQG and PI control for a hydro turbine plant. In 2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012. 2012. p. 656-661. 6329659
Hamarasheed, Chalang ; Mohamed Haris, Sallehuddin ; Mohd Nopiah, Zulkifli. / Weighted multiple model adaptive LQG and PI control for a hydro turbine plant. 2012 International Conference onAdvanced Mechatronic Systems, ICAMechS 2012. 2012. pp. 656-661
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