Design and Experimental Evaluation of a Multivariable Grinding Circuit Control System

Jämsä, S.L.; Melama, H.; Penttinen, J.

doi:10.1016/s1474-6670(17)64268-x

Cited by 7 publications

(3 citation statements)

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“…The primary grinding stage in the Vuonos concentrator comprises a rod mill and a pebble mill with a hydrocyclone classifier (Jämsä et al, 1983). The instrumentation of the grinding circuit is shown in Fig.…”

Section: Modeling Of the Primary Grinding Circuitmentioning

confidence: 99%

“…According to the present control strategy the process inputs are the crushed ore feed (U 1´s µ) and the water feed to the cyclone pump sump (U 2´s µ) and the process outputs are the cyclone overflow particle size (Y 1´s µ) and the cyclone feed density (Y 2´s µ). The transfer function matrix of the process is given by (Jämsä et al, 1983): Here all time constants are given in minutes.…”

Section: Modeling Of the Primary Grinding Circuitmentioning

confidence: 99%

“…An experimental model developed of a primary grinding circuit (Jämsä et al, 1983) containing unstable invariant zeros is described in Section 3. The simultaneous decoupling and pole-placement problem without cancelling the unstable invariant zeros of the primary grinding circuit is approached in Section 4 by searching for all solutions of the nonlinear system of equations composed of the characteristic equation and the decoupling conditions using the ideas of the αBB global optimization approach.…”

Section: Introductionmentioning

confidence: 99%

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A Decoupling Grinding Circuit Control System

Hauksdottir

Ierapetritou

Jämsä‐Jounela³

et al. 2002

IFAC Proceedings Volumes

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The problem of simultaneous decoupling and pole placement without cancelling invariant zeros is important, especially in the case of unstable invariant zeros. An experimental model developed of a primary grinding circuit contains such zeros. The simultaneous decoupling and pole-placement problem without cancelling the unstable invariant zeros of the primary grinding circuit is approached by searching for solutions of the nonlinear system of equations composed of the characteristic equation and the decoupling conditions using ideas of an αBB global optimization approach. The simultaneous steady-state decoupling and pole placement problem is then solved for the primary grinding circuit without cancelling invariant zeros using an eigenvector based approach as well as the steady-state decoupling condition.

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Section: Modeling Of the Primary Grinding Circuitmentioning

confidence: 99%

Section: Modeling Of the Primary Grinding Circuitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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