Howtosignalprocessing
- How do you reduce settling time in lead compensator?
- How does a lead compensator increase stability?
- Which compensator is used to reduce steady state error and improve speed of response?
How do you reduce settling time in lead compensator?
The lead compensator increases the gain of the system at high frequencies (the amount of this gain is equal to a). This can increase the crossover frequency, which will help to decrease the rise time and settling time of the system (but may amplify high frequency noise).
How does a lead compensator increase stability?
The lead compensator provides phase lead at high frequencies. This shifts the root locus to the left, which enhances the responsiveness and stability of the system. The lag compensator provides phase lag at low frequencies which reduces the steady state error.
Which compensator is used to reduce steady state error and improve speed of response?
We know that the lag compensator improves the steady-state performance of the system, and the lead compensator enhances the speed of the transient response. Thus, the combination of these two (lag-lead compensator) is used when the system's fast response and steady-state performance are required.
