A New Pulse Modulator for Solid Propellant Attitude Control Motors

Abstract:

Antimissile interceptors with the attitude control motors (ACM) were researched. For solid propellant ACM, a pulse frequency modulation scheme is proposed, which is based on conventional PWPF modulator. The modulator extends the application of modulation control method to solid propellant ACM, and integrates it with a feedback of thrust estimation which is decided by location and thrust interaction factors. The stability of the new modulator was analyzed by Lyapunov method and a stability margin was given. Simulations show that the stability margin is conservative, but acceptable. Interceptor simulations using the modulator indicate that this technique provides closer-to-linear actuation than conventional bang-bang thruster control methods.

• Periodical: Advanced Materials Research (Volume 429)
• Pages: 292-297
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.429.292
• Online since: January 2012
• Authors: Qi Sun, Jun Zhou, Zhi Lei Ge
• Keywords: Anti-Missile Interceptor, Attitude Control Motors, Direct Lateral Force, Pulse Modulation, PWPF

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