Controllability of SVD control structures for ill-conditioned plants
Controllability of SVD control structures for ill-conditioned plants
- Author(s): M.F. Sagfor and K.V. Waller
- DOI: 10.1049/cp:19960605
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- Author(s): M.F. Sagfor and K.V. Waller Source: UKACC International Conference on Control. Control '96, 1996 p. 515 – 520
- Conference: UKACC International Conference on Control. Control '96
- DOI: 10.1049/cp:19960605
- ISBN: 0 85296 666 0
- Location: Exeter, UK
- Conference date: 2-5 Sept. 1996
- Format: PDF
A conventional diagonal controller can be designed from very limited process information. In the SVD control structure, a diagonal controller is applied to orthogonal sums and differences of the inputs and outputs. In this work, the process knowledge needed for the design of an SVD controller is analyzed. In contrast to conventional decentralized controllers, the SVD controller can compensate for the process directionality of ill-conditioned processes. The dual composition control problem of distillation columns is of particular interest, since reliable models for these columns are quite hard to obtain.
Inspec keywords: singular value decomposition; decentralised control; process control; chemical variables control; distillation; controllability; compensation
Subjects: Chemical industry; Chemical variables control; Multivariable control systems; Algebra; Industrial processes; Control technology and theory (production); Control system analysis and synthesis methods; Algebra; Control applications in chemical and oil refining industries
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