Actuating signal It is also called error signal (see error signal).
Asymptote The path the root locus follows as the parameter becomes very large and approaches infinity.
Bandwidth The frequency at which the frequency response declines to 3 dB from its low-frequency value.
Bode plot The logarithm of the magnitude of the transfer function is plotted versus the logarithm of ω, the frequency. The ɸ, of the transfer function is plotted versus the logarithm of the frequency.
Characteristic equation The relation formed by equating to zero the denominator of a transfer function.
Closed-loop feedback control system A system that uses a measurement of the output and compares it with the desired output.
Compensation The ...