Limitations of PLL simulation: hidden oscillations in MatLab and SPICE

摘要: Nonlinear analysis of the phase-locked loop (PLL) based circuits is a challenging task, thus in modern engineering literature simplified mathematical models and simulation are widely used for their study. In this work limitations numerical approach discussed it shown that, e.g. hidden oscillations may not be found by simulation. Corresponding examples SPICE MatLab, which lead to wrong conclusions concerning operability PLL-based circuits, presented.