ABSTRACT
This chapter compares the λ and γ-tuning methods from a servo/regulation point of view. Simulation examples clarify the discussion and confirm the effectiveness of each approach. It proposes a tuning interval for λ, and suggests a value for balanced smooth/tight control. It is devoted to compare, from a servo/regulation point of view, the λ and γ-tuning approaches. The chapter deals with some implementation aspects. The λ-tuning strategy yields good set-point and disturbance responses when disturbances enter at the output of the plant. However, for lag-dominant plants, it provides sluggish (load) disturbance response. The chapter compares the λ- and γ-tuning approaches. Nevertheless, for larger allowed overshoots and/or more lag-dominant plants, then the γ-tuning technique allows better (input) disturbance attenuation for a given degree of robustness.
