A common method for evaluating a servo system’s stability is to determine the system’s frequency response, which involves measuring the gain margin and phase margin at the crossover frequencies. To understand how gain and phase crossover frequency is used to determine stability, let’s look at exactly what it represents, using a Bode plot. Closed loop systems are difficult […]

# phase margin

## FAQ: What is the closed-loop frequency response of a servo motor?

For a system driven by sinusoidal inputs, such as a servo motor, frequency response is a measure of the amplitude and phase of the output signal relative to the input signal. It is a useful estimate of the limits of servo tuning that will produce a stable system without oscillation. To determine frequency response, a sinusoidal input […]