lead-lag compensator

Both analog and digital control systems use lead-lag compensators.

A lead-lag compensator consists of a lead compensator cascaded with a lag compensator.

A lead-lag compensator is a component in a control system that improves an undesirable frequency response in a feedback and control system.

Lead-lag compensators influence disciplines as varied as robotics, satellite control, automobile diagnostics, laser frequency stabilization, and many more.

(A loosely related concept is that of lead-lag compensators in control theory, but this is not generally referred to specifically as a "lead-lag effect.")