समग्र ऊष्मा स्थानांतरण कैलकुलेटर — सूत्र

Gain Margin

Gain margin measures how much the open-loop gain can increase before the system becomes unstable. It is evaluated at the phase crossover frequency (where the open-loop phase equals -180°).

Formula

GM = 1 / G(j*omega_pc)= -20*log10(G(j*omega_pc)) dB

where omega_pc is the phase crossover frequency. A positive gain margin (in dB) indicates stability. The larger the gain margin, the more robust the system is to gain variations.