An improved adaptive feedforward cancellation for tool trajectory tracking in diamond turning of freeform optics

Author

Zhou, Xiaoqin ; Hu, Longfei

Author_Institution

Sch. of Mech. Sci. & Eng., Jilin Univ. Changchun, Changchun, China

fYear

2010

fDate

26-28 June 2010

Firstpage

3590

Lastpage

3593

Abstract

Optical free-form surfaces can be realized by diamond turning based on Fast Tool Servo (FTS), which is an efficient, precise and low-cost processing method. In order to use diamond turning to manufacture optical free-form surface, this paper develops a great stroke FTS which is driven by voice coil, analyzes and establishes a transfer function model of the FTS, and improves adaptive feedforward cancellation (AFC) control algorithm. Through simulation analysis, compare the performances of the control system in detail. The results show that the improved AFC in this paper betters the robustness of the control system, and it can be used to track the tool path of the FTS.

Keywords

adaptive control; control systems; feedforward; position control; robust control; adaptive feedforward cancellation control algorithm; control system; diamond turning; fast tool servo; freeform optics; low-cost processing method; manufacture optical free-form surface; simulation analysis; tool trajectory tracking; transfer function model; voice coil; Adaptive optics; Algorithm design and analysis; Automatic frequency control; Coils; Pulp manufacturing; Servomechanisms; Speech analysis; Trajectory; Turning; Virtual manufacturing; adaptive feedforward cancellation (AFC); diamond turning; fast tool servo (FTS); internal model control; optical free-form surface; tool path tracking; voice coil actuator;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-7737-1

Type

conf

DOI

10.1109/MACE.2010.5535387

Filename

5535387