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Design of state feedback control laws based on reduced order models

Abu Al-Saud, Fathi Abd Al-Adeem (1990) Design of state feedback control laws based on reduced order models. Masters thesis, King Fahd University of Petroleum and Minerals.

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Suboptimal linear quadratic control law of high dimensional systems based on reduced order models derived via balancing reduction method is derived. The proposed law is compared to suboptimal control laws based on aggregation and singular perturbation. Performance evaluation based on stability, suboptimality degree, quadratic cost degradation, closed loop step responses and controls, and closed loop pole positions has shown the superiority of the proposed suboptimal control law. The comparison is done through the application of the suboptimal control laws to several physical plants. The base of the comparison is the optimal control law. Also, a new reduction method, which combines features of balancing and aggregation, called Balagg, is introduced and evaluated. The use of reduced order models based on balancing, aggregation, balagg, and singular perturbation in pole placement is also considered. In pole placement, two design purposes are considered: 1. placing only some of the open loop eigenvalues and 2. shaping the open loop responses to nominal ones. Aggregation and balagg perform the best for the first design purpose while none of reduction methods meet the second design purpose.



Item Type:Thesis (Masters)
Date:June 1990
Date Type:Completion
Subjects:Electrical
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Abu Al-Saud, Fathi Abd Al-Adeem
Committee Advisor:Bettayeb, Mammar
Committee Members:Al-Baiyat, Samir A. and Al-Saggaf, U. M. and Bakri, Talal M.
ID Code:9602
Deposited By:KFUPM ePrints Admin
Deposited On:22 Jun 2008 16:44
Last Modified:25 Apr 2011 09:13

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