What controller is used to reduce oscillations?

A proportional-derivative (PD) controller is commonly used to reduce oscillations in control systems. The proportional component provides a response based on the current error, while the derivative component anticipates future errors by considering the rate of change of the error. This combination helps dampen oscillations and improve system stability by reacting appropriately to both the magnitude and rate of error changes. In some cases, a proportional-integral-derivative (PID) controller may be used for even better performance.