Controller Design for a Closed-Loop Scanning Tunneling Microscope

Irfan Ahmad (1) , Alina Voda (1) , Gildas Besancon (2)

1 GIPSA-SLR - GIPSA - Systèmes linéaires et robustesse
2 GIPSA-SYSCO - GIPSA - Systèmes non linéaires et complexité

This paper focuses on controller design for a closed-loop scanning tunneling microscope to deal with fast variations in sample surface. A linear approximation approach is used to deal with non-linearities. The desired performances are then achieved by a controller design based on pole placement with sensitivity function shaping using second order digital notch filters. The corresponding simulation results show better performances than those obtained with PID control techniques.

Mots clés: Simulation; Scanning tunneling microscope; Linear approximation; Controller design; Sensitivity function shaping; Simulation.

Domaines: Automatique / Robotique

Irfan Ahmad, Alina Voda, Gildas Besancon. Controller Design for a Closed-Loop Scanning Tunneling Microscope. CASE 2008 - IEEE Conference on Automation Science and Engineering, Aug 2008, Washington, DC, United States. ⟨hal-00348387⟩