Lead compensator is a type of compensator or device which produces a sinusoidal output having the phase lead when sinusoidal input is applied. What have we learned today? What is a lead lag compensator?
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This shifts the root locus to the left, which enhances the responsiveness and stability of the system. To get intution, we start with the simplest form of controllers: It is a combination of both the lag and the lead.
Lead compensation introduces a zero, increasing system speed and reducing overshoot by improving the phase margin.
The lead compensator provides phase lead at high frequencies. Providing extra zeros eliminates annoying frequency. One solution is to use a notch filter.
