Title :
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
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;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5535387
