Get Advanced H∞ Control: Towards Nonsmooth Theory and PDF

By Yury V. Orlov, Luis T. Aguilar

ISBN-10: 1493902911

ISBN-13: 9781493902910

ISBN-10: 149390292X

ISBN-13: 9781493902927

This compact monograph is targeted on disturbance attenuation in nonsmooth dynamic platforms, constructing an H strategy within the nonsmooth surroundings. just like the normal nonlinear Happroach, the proposed nonsmooth layout promises either the interior asymptotic balance of a nominal closed-loop process and the dissipativity inequality, which states that the dimensions of an errors sign is uniformly bounded with recognize to the worst-case measurement of an exterior disturbance sign. This warrantly is completed by way of developing an power or garage functionality that satisfies the dissipativity inequality and is then applied as a Lyapunov functionality to make sure the interior balance requirements.

Advanced H regulate is designated within the literature for its remedy of disturbance attenuation in nonsmooth structures. It synthesizes numerous instruments, together with Hamilton–Jacobi–Isaacs partial differential inequalities in addition to Linear Matrix Inequalities. besides the finite-dimensional therapy, the synthesis is prolonged to infinite-dimensional atmosphere, concerning time-delay and disbursed parameter structures. to assist illustrate this synthesis, the e-book makes a speciality of electromechanical functions with nonsmooth phenomena attributable to dry friction, backlash, and sampled-data measurements. unique recognition is dedicated to implementation issues.

Requiring familiarity with nonlinear structures concept, this booklet could be obtainable to graduate scholars attracted to structures research and layout, and is a welcome boost to the literature for researchers and practitioners in those areas.

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Extra info for Advanced H∞ Control: Towards Nonsmooth Theory and Applications

Example text

T/S. /˚. 20) t where ˚. 12), which, under the lemma conditions, satisfies the inequality k˚. ; t/k Ä me . 21) 3 Linear H1 Control of Time-Varying Systems 48 for all t and some positive m and . 0; t/ C ˚ T . ; t/S. /˚. 19) is uniformly bounded iff these solutions have the same initial conditions. 0; t/qk Ä Kme t ! 0 as t ! 1. 19). t/ is positive definite. , [78, p. t/ for each " > 0 small enough. i i / ! i i i / is thus established. i i i / ! i /. t/ is chosen with sufficiently small " > 0, and the rest of the proof follows the same line of reasoning as that used in the proof of Theorem 4.

Let the H1 suboptimal control problem possess a solution. T 2/. 28) and some " > 0. T 2/. The detailed proof of the sufficiency follows the line of reasoning used in the proof of Theorem 4 and is left to the reader. Chapter 4 Nonlinear H1 Control In this chapter, the H1 (sub)optimal control problem is reformulated for an autonomous nonlinear system in terms of its L2 -induced norm. 3) for the H1 -norm extension in the time-varying setting]. An additional motivation comes from the time-domain interpretation, where the H1 norm stands for the maximum gain in the steady-state response to sinusoidal inputs.

Q; t/ D ˚A . t/ D q 2 Rn and evaluated at a time instant . t/q D Z s T . ; q; t/S. /s. ; q; t/d 1 ˛ t ks. 7) t In turn, Z ks. Â/kd kqke m0 . t/. t/q ˛ t 1 q T qe 2m0 . t/ are T -periodic, the transition matrix ˚A . ; t/ is such that ˚A . ; t/ D ˚A . 5) proves to be T -periodic, too. t C T / D Z 1 D t 1 t CT T ˚A . ; t C T /S. /˚A . ; t C T /d T ˚A . C T; t C T /S. C T /˚A . C T; t C T /d Z 1 D t T ˚A . ; t/S. /˚A . t/; D where the integration variable substitution is thus proved. 10) C T has been applied.

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Advanced H∞ Control: Towards Nonsmooth Theory and Applications by Yury V. Orlov, Luis T. Aguilar


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