Download Block Backstepping Design of Nonlinear State Feedback by Shubhobrata Rudra, Ranjit Kumar Barai, Madhubanti Maitra PDF

By Shubhobrata Rudra, Ranjit Kumar Barai, Madhubanti Maitra

ISBN-10: 981101955X

ISBN-13: 9789811019555

ISBN-10: 9811019568

ISBN-13: 9789811019562

This ebook offers a singular, generalized method of the layout of nonlinear country suggestions keep an eye on legislation for a wide type of underactuated mechanical platforms in line with program of the block backstepping technique. The keep watch over legislations proposed this is powerful opposed to the results of version uncertainty in dynamic and steady-state functionality and addresses the problem of asymptotic stabilization for the category of underactuated mechanical structures.
An underactuated procedure is outlined as one for which the size of area spanned through the configuration vector is larger than that of the distance spanned by means of the keep watch over variables. keep watch over difficulties bearing on underactuated structures presently signify an lively box of study because of their large variety of purposes in robotics, aerospace, and marine contexts. The booklet derives a generalized thought of block backstepping keep watch over layout for underactuated mechanical structures, and examines a number of case reports that disguise fascinating examples of underactuated mechanical structures. The mathematical derivations are defined utilizing famous notations and easy algebra, with out the necessity for any designated earlier history in larger arithmetic. The chapters are lucidly defined in a scientific demeanour, beginning with regulate process preliminaries and relocating directly to a generalized description of the block backstepping strategy, prior to turning to a number of case reports. Simulation and experimental effects also are supplied to assist in reader comprehension.

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Additional resources for Block Backstepping Design of Nonlinear State Feedback Control Law for Underactuated Mechanical Systems

Example text

22)]. 44) that the controller parameters c1 and c2 control the rate of convergence of the regulated variables. It is also clear from Eq. 44) that c1, c2, and k should be selected from the set of all positive real numbers ðR þ Þ to ensure the asymptotic stability of the proposed control algorithm. Since a very high value of k may generate some adverse affect on the controller performance, a comparatively small value of k has been chosen to control the integral action. 7 The dimension of the reduced order system described by Eq.

4)] has been modified as expressed in the following Eq. 5): a1 ¼ Àc1 z1 À kv1 þ kðp1 þ g2 f1 þ p1 dg2 Á p À g1 f2 À p2 dg1 Á pÞ ð3:5Þ Rt where v1 ¼ 0 z1 dt and k is a design constant. With the above definition of stabilizing function, now the time derivative of z1 could be expressed as shown in following Eq. 6): z_ 1 ¼ p2 À a1 À c1 z1 À kv1 ð3:6Þ Step 3: In accordance with Eq. 6), the second error variable ðz2 2 RÞ has been defined as the difference between stabilizing function and the virtual control in such a manner that the two variables z1 and z2 could be used to represent a reduced state model of the system in strict feedback form.

This approach has eventually yielded a convenient design of control law. e. z_ 1 ¼ Àk1 v1 À c1 z1 þ z2 and z_ 2 ¼ Àz1 À c2 z2 . The desired dynamics of z2 is expressed in Eq. 11) as following: ð3:12Þ z_ 2 ¼ Àz1 À c2 z2 Please note that the dynamics z1 as mentioned in Eq. 8) together with the desired dynamics of z2 as shown in the above Eq. 12) describe the dynamics of a stable system, which resembles the state model of a second order stable system with two poles located at −c1, and −c2, respectively.

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Block Backstepping Design of Nonlinear State Feedback Control Law for Underactuated Mechanical Systems by Shubhobrata Rudra, Ranjit Kumar Barai, Madhubanti Maitra


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