Aas 09-405 Pseudospectral Optimal Control on Arbitrary Grids

نویسندگان

  • Qi Gong
  • I. Michael Ross
  • Fariba Fahroo
چکیده

In advancing our prior work on a unified theory for pseudospectral (PS) optimal control, we present new results for PS methods over arbitrary grids. These results provide a way to compare performances among different PS methods and suggest guidelines to choose the proper grids and discretization approaches for solving optimal control problems. The new unified ideas reveal hidden properties of different types of PS methods and pave the way to construct more efficient algorithms for solving different types of optimal control problems. Our computational framework is not based on any particular choice of orthogonal polynomials; therefore, the approach unifies Legendre and Chebyshev PS methods under one framework.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Aas 05-338 Optimal Reconfiguration of a Tetrahedral Formation via a Gauss Pseudospectral Method

This paper addresses the problem of determining a minimum-fuel maneuver sequence to reconfigure a tetrahedral formation. The objective of this work is to develop a single orbit, minimum-fuel reconfiguration strategy such that, after reconfiguration, the four spacecraft are able to return to an acceptable tetrahe-dral configuration in a region of interest near apogee for a period of three weeks ...

متن کامل

Antisymmetry, pseudospectral methods, and conservative PDEs

“Dual composition”, a new method of constructing energy-preserving discretizations of conservative PDEs, is introduced. It extends the summation-by-parts approach to arbitrary differential operators and conserved quantities. Links to pseudospectral, Galerkin, antialiasing, and Hamiltonian methods are discussed.

متن کامل

Aas 13-836 Quaternion Based Optimal Spacecraft Reorientation under Complex Attitude Constrained Zones

The paper addresses quaternion-based energy and time optimal spacecraft reorientation in the presence of complex attitude constrained zones. Designing an optimal reorientation trajectory for a rigid body spacecraft is posed as a nonlinear optimal control problem. In this direction, attitude constrained zones are defined with respect to the onboard instrument under two categories, forbidden and ...

متن کامل

Advances in Pseudospectral Methods for Optimal Control

Recently, the Legendre pseudospectral (PS) method migrated from theory to flight application onboard the International Space Station for performing a finite-horizon, zeropropellant maneuver. A small technical modification to the Legendre PS method is necessary to manage the limiting conditions at infinity for infinite-horizon optimal control problems. Motivated by these technicalities, the conc...

متن کامل

DISTRIBUTION A: APPROVED FOR PUBLIC RELEASE Pseudospectral Optimal Control: Hidden Properties and Flight Results

The main goal of this joint project between the Naval Postgraduate School and the University of California, Santa Cruz, was to analyze the mathematical proprieties of pseudospectral (PS) optimal control theory. The secondary goal of our project was to exploit the new properties to develop or enhance computationally efficient control algorithms. These goals were motivated by a need to generate r...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009