"Youla parameterization"

Discrete-time Reduced-Complexity Youla Parameterization for Dual-input Single-output Systems

A controller design is presented for directly shaping the sensitivity function in the feedback control of dual-input single-output (DISO) systems. We provide special forms of discrete-time Youla-Kucera (YK) parameterization to obtain stabilizing …

Pseudo Youla-Kucera Parameterization with Control of the Waterbed Effect for Local Loop Shaping

This paper discusses a discrete-time loop shaping algorithm for servo enhancement at multiple wide frequency bands. Such design considerations are motivated by a large class of practical control problems such as vibration rejection, active noise …

Reduced-Complexity and Robust Youla Parameterization for Discrete-Time Dual-Input-Single-Output Systems

A loop-shaping idea for dual-input-single-output (DISO) systems is presented in this paper. We explore special forms of Youla parameterization for obtaining stabilizing controllers for DISO systems, and discuss concepts to achieve reduced-complexity …

Control Methodologies for Precision Positioning Systems

We have many servo systems that require nano/micro level positioning accuracy. This requirement sets a number of interesting challenges from the viewpoint of sensing, actuation, and control algorithms. This paper considers the control aspect for …

Add-on Loop Shaping via Youla Parameterization for Precision Motion Control

Inverse-Based Local Loop Shaping and IIR-filter Design For Precision Motion Control

In motion-control problems such as vibration rejection, periodical reference tracking, and harmonic disturbance cancellation, the disturbances/references share a common characteristic of exhibiting concentrated energies at multiple bands of …