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Toward a coherent framework for the ...

Westervelt, Eric Richard.

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Toward a coherent framework for the control of planar biped locomotion.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Toward a coherent framework for the control of planar biped locomotion./
作者:	Westervelt, Eric Richard.
面頁冊數:	221 p.
附註:	Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2846.
Contained By:	Dissertation Abstracts International64-06B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3096239

Toward a coherent framework for the control of planar biped locomotion.
Westervelt, Eric Richard.

Toward a coherent framework for the control of planar biped locomotion. - 221 p.

Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2846.

Thesis (Ph.D.)--University of Michigan, 2003.

Planar, underactuated, biped walkers form an important domain of application for hybrid dynamical systems.Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Toward a coherent framework for the control of planar biped locomotion.
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245 1 0 $a Toward a coherent framework for the control of planar biped locomotion.
300 $a 221 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-06, Section: B, page: 2846.
500 $a Co-Chairs: Jessy W. Grizzle; Daniel E. Koditschek.
502 $a Thesis (Ph.D.)--University of Michigan, 2003.
520 $a Planar, underactuated, biped walkers form an important domain of application for hybrid dynamical systems.
520 $a This dissertation presents the design of controllers that induce exponentially stable dynamic walking for general planar biped robots that have one degree of freedom greater than the number of available actuators during the single support phase. The within-step control action creates an attracting invariant set---a two-dimensional zero dynamics submanifold of the full hybrid model---whose restriction dynamics admits a scalar linear time invariant return map. Exponentially stable periodic orbits of the zero dynamics correspond to exponentially stabilizable orbits of the full model. Thus, walking controllers may be designed via the two-dimensional zero dynamics. A convenient parameterization of the hybrid zero dynamics is imposed through the choice of a class of output functions. Parameter optimization is used to tune the hybrid zero dynamics in order to achieve closed-loop, exponentially stable walking with low energy consumption, while meeting natural kinematic and dynamic constraints. Two additional control features are developed: (1) the ability to compose controllers that induce walking at a, fixed average walking rate to obtain walking at several, discrete average walking rates with guaranteed stability during the transitions; and (2) the ability to regulate the average walking rate to a continuum of values. The general theory developed in the dissertation is experimentally verified on a five-link prototype walker, consisting of a torso and two legs with knees.
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