Download e-book for iPad: Algebraic Methods for Nonlinear Control Systems by Giuseppe Conte, Claude H. Moog, Anna Maria Perdon

System Theory

By Giuseppe Conte, Claude H. Moog, Anna Maria Perdon

ISBN-10: 1846285941

ISBN-13: 9781846285943

ISBN-10: 184628595X

ISBN-13: 9781846285950

It is a self-contained advent to algebraic regulate for nonlinear structures compatible for researchers and graduate scholars. it's the first publication facing the linear-algebraic method of nonlinear keep an eye on platforms in the sort of targeted and wide type. It presents a complementary method of the extra conventional differential geometry and bargains extra simply with numerous very important features of nonlinear structures.

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Additional info for Algebraic Methods for Nonlinear Control Systems (Communications and Control Engineering)

Sample text

1, to an irreducible input-output system, whenever it exists. 19. 16 are fulfilled. 14) is an irreducible input-output system. Proof. 16 is observable. 23). , s. 24) is controllable. 6. 20. Consider φ = y¨ − yu ˙ − y u. ˙ 34 2 Modeling ⎛ ⎛ ⎞ ⎞ y˙ 0 ⎜ yu ⎜0⎟ ⎟ ˙ + y u ˙ ⎟ and ge = ⎜ ⎟. Thus, dφr = d(y−yu) Compute fe = ⎜ ˙ ∈ H∞ . An ⎝ ⎝0⎠ ⎠ u˙ 0 1 irreducible differential form of φ = 0 is dφr = d(y˙ −yu). 14). The purpose of this section is to give an algorithmic construction of a canonical affine state-space representation; it results from a special choice of the basis for Hs+2 under some special structure of the input-output equation.

U(sij ) ) where 0 < λ < r, 0 < σ < rij + sij . 2 (r +s ) • If sij ≥ 0 and ∂ 2 yij ij ij /∂u(sij ) = 0 for some j = 1, . . , 2i−1 , stop! 2 (r +s ) • If Xi+1 + U = Y + U and ∂ 2 yij ij ij /∂u(sij ) = 0, whenever sij ≥ 0, then the algorithm stops and the realization is completed. Otherwise, define (r +s ) the new auxiliary outputs, whenever d(∂yij ij ij /∂u(sij ) ) = 0, respectively, (r ) d(yij ij − (r ∂yij ij +sij ) (sij ) ∂u u) = 0: (r +sij ) yi+1,2j−1 = ∂yij ij , yi+1,2j = ∂u(sij ) (r ) yij ij (r +sij ) − ∂yij ij ∂u(sij ) u End of the algorithm.

Consider the linear input-output relation y¨ = u + u˙ that corresponds to the transfer function s+1 s2 , having a zero in s = −1. Although the input-output relation is linear, the above procedure yields a generalized realization: ⎧ ⎨ x˙ 1 = x2 x˙ 2 = −u − u˙ ⎩ y = x1 The notions of controllability/accessibility and of observability that one can use in characterizing the structure of internal representations are reported in Chapters 3 and 4. 11) is in general observable, but not necessarily accessible .

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Algebraic Methods for Nonlinear Control Systems (Communications and Control Engineering) by Giuseppe Conte, Claude H. Moog, Anna Maria Perdon

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