A Nonlinear Fuel Optimal Reaction Jet Control Law

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We derive a nonlinear fuel optimal attitude control system (ACS) that drives the final state to the desired state according to a cost function that weights the final state angular error relative to the angular rate error. Control is achieved by allowing the pulse-width-modulated (PWM) commands to begin and end anywhere within a control cycle, achieving a pulse width pulse time (PWPT) control. We show through a MATLAB{reg_sign} Simulink model that this steady-state condition may be accomplished, in the absence of sensor noise or model uncertainties, with the theoretical minimum number of actuator cycles. The ability to analytically achieve near-zero ... continued below

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5,340 Kilobytes pages

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Breitfeller, E. & Ng, L.C. June 30, 2002.

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We derive a nonlinear fuel optimal attitude control system (ACS) that drives the final state to the desired state according to a cost function that weights the final state angular error relative to the angular rate error. Control is achieved by allowing the pulse-width-modulated (PWM) commands to begin and end anywhere within a control cycle, achieving a pulse width pulse time (PWPT) control. We show through a MATLAB{reg_sign} Simulink model that this steady-state condition may be accomplished, in the absence of sensor noise or model uncertainties, with the theoretical minimum number of actuator cycles. The ability to analytically achieve near-zero drift rates is particularly important in applications such as station-keeping and sensor imaging. Consideration is also given to the fact that, for relatively small sensor and model errors, the controller requires significantly fewer actuator cycles to reach the final state error than a traditional proportional-integral-derivative (PID) controller. The optimal PWPT attitude controller may be applicable for a high performance kinetic energy kill vehicle.

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5,340 Kilobytes pages

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  • 11th Annual American Institute of Aeronautics and Astronautics/Missile Defence Agency Technology Conference and Exhibit, Monterey, CA (US), 07/29/2002--08/02/2002

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  • Report No.: UCRL-JC-148994
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 802835
  • Archival Resource Key: ark:/67531/metadc742240

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 30, 2002

Added to The UNT Digital Library

  • Oct. 19, 2015, 7:39 p.m.

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  • May 6, 2016, 3:37 p.m.

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Breitfeller, E. & Ng, L.C. A Nonlinear Fuel Optimal Reaction Jet Control Law, article, June 30, 2002; California. (digital.library.unt.edu/ark:/67531/metadc742240/: accessed October 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.