Design and Control of a Piezo-Based Fast Tool Servo System for Precision Diamond Turning

Y.H. Yang; Shi Jin Chen; K. Cheng

doi:10.4028/www.scientific.net/KEM.339.195

Paper Titles

EDM Properties of a Low Wear Electrically Conductive CVD Diamond Electrode
p.168

Static Characteristic Analysis of a 3-DOF Micropositioning Table for Grinding
p.177

A Novel Micro Sliding Rotary Engine
p.183

Predictive Model of Surface Roughness in High-Speed End Milling Process by Factorial Design of Experiments
p.189

Design and Control of a Piezo-Based Fast Tool Servo System for Precision Diamond Turning
p.195

A High Precision Focus Probe for the Quality Assessment of Grating Pitches
p.200

Molecular Dynamic Simulation Study of AFM Single-Wall Carbon Nanotube Tip-Surface Interactions
p.206

Experimental Study on the Surface Modification and Materials Removal of Ultra Thin DLC Films
p.211

Nanometer Positioning in the Presence of Friction
p.217

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Design and Control of a Piezo-Based Fast Tool Servo System for Precision Diamond Turning

Abstract:

A novel fast tool servo driven by piezoelectric actuator for precision diamond turning is designed in this paper. To overcome the inherent hysteresis and drift nonlinearity effect of the piezoelectric actuator, a closed-loop control system is established using strain gauge integrated in the actuator for position feedback, which has compact structure and can avoid interference in the machining. Furthermore, a fuzzy PI control algorithm is presented. It has not only the advantages of agility and adaptability of fuzzy control, but the characteristics of high accuracy of PI arithmetic. At last, experiments are carried out and the results show that the fuzzy PI control provides significantly better tracking accuracy and robustness against hysteresis and drift effects.