Pulse-width pulse-frequency (PWPF) modulators arewidely used in spacecraft thruster control. Their dynamic characteristic is still lack of effective analysis tools. This paper presents a fractional describing functionmethod to describe the frequency characteristics of PWPF. A frequency-dependent gain and phase shift are clearly described by fractional-order expression, and the fractional-order behaviors depict the nonlinear properties of PWPF modulators. This fractional describing function method can also be applied to other kinds of modulators. Copyright © 2013 XinshengWang et al.
CITATION STYLE
Wang, X., Wang, D., Zhu, S., & Poh, E. K. (2013). Fractional describing function analysis of PWPF modulator. Mathematical Problems in Engineering, 2013. https://doi.org/10.1155/2013/287040
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