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Estimating the plant state from the compensator state

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3 Author(s)
R. Fowell ; Hughes Aircraft Company, Los Angeles, CA, USA ; D. Bender ; A. Assal

For the system \dot{w} = Sw where w = (x\over{z}) , this note states and proves necessary and sufficient conditions under which a) z is an estimate of a linear function of x (i.e., z estimates Tx ), or b) a linear function of z is an estimate of x (i.e., Vz estimates x ). The mapping T has been used previously by the authors to compute the estimator-controller form of a compensator whose state vector z had the same dimension as the plant state vector x .

Published in:

IEEE Transactions on Automatic Control  (Volume:31 ,  Issue: 10 )