Title :
Feedforward control for high precision linear servo system
Author :
Ismail, Hashimah ; Ishak, Norlela ; Tajjudin, Mazidah ; Rahiman, Mohd Hezri Fazalul ; Adnan, Ramli
Author_Institution :
Fac. of Eng., Univ. Selangor (UNISEL), Bestari Jaya, Malaysia
Abstract :
High precision control has received great attention. Nowadays, as the machines are used for precise operations in manufacturing field, fast and precision control for translational movement are required. In this paper, a linear digital tracking control system is considered to control the position of a non-minimum phase servo system. The system transfer function is obtained via system identification technique using Matlab Toolbox. Feedforward Zero Phase Error Tracking Control (ZPETC) is designed and used in this system. The performance of the controller is analyzed through simulation and real-time experiment by multiple frequency sine wave input. The system is further improved by introducing an error filter to the feedforward controller to increase frequency spectrum. Both controller performances are compared and the result shows significant improvement.
Keywords :
control system synthesis; feedforward; position control; servomechanisms; tracking; transfer functions; Matlab toolbox; error filter; feedforward control; feedforward zero phase error tracking control; frequency sine wave input; high precision control; linear digital tracking control system; linear servo system; nonminimum phase servo system; position control; system identification technique; system transfer function; translational movement; Feedforward neural networks; Mathematical model; Real time systems; Servomotors; System identification; Transfer functions; Feedforward Control; High Precision Control; Real-Time Control; System Identification; ZPETC;
Conference_Titel :
Control and System Graduate Research Colloquium (ICSGRC), 2011 IEEE
Conference_Location :
Shah Alam
Print_ISBN :
978-1-4577-0337-9
DOI :
10.1109/ICSGRC.2011.5991842
