Comments on ‘Gain Scheduling Dynamic Linear Controllers for a Nonlinear Plant’
Leith, D. J. and Leithead, W.E. (1998) Comments on ‘Gain Scheduling Dynamic Linear Controllers for a Nonlinear Plant’. Automatica, 34 . pp. 1041-1043. ISSN 0005-1098
Lawrence & Rugh (1995), Kaminer et al. (1995) propose that the realisation for a gain-scheduled controller should be chosen to satisfy a local linear equivalence condition. However, this provides an inadequate basis selecting an appropriate realisation. Many realisations satisfy the local linear equivalence condition yet are not equivalent and can exhibit quite different dynamic behaviour. Furthermore, the condition imposes restrictions on the controller states and inputs which are not a priori necessary.
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