Title :
Relay-based force ripple and friction modeling for the permanent magnet linear motor
Author :
Chen, Si-Lu ; Huang, Sunan ; Tan, Kok Kiong
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
Nonlinearities including friction and force ripple, exist in the permanent magnet linear motors, which limit control precision. In this paper, the dynamics model of the linear motor under nonlinear effects are first given. Parameter estimation via limit cycle experiments using the dual-relay feedback apparatus are proposed. Guidelines for choosing appropriate relay gains to tune the limit cycle amplitudes and frequencies within the feedback system with friction and force ripple are also provided. All the results are verified by simulation.
Keywords :
control nonlinearities; feedback; friction; limit cycles; linear motors; machine control; parameter estimation; permanent magnet motors; relays; dual-relay feedback apparatus; feedback system; friction modeling; nonlinear effects; nonlinearities; parameter estimation; permanent magnet linear motor; relay-based force ripple; Control nonlinearities; Force control; Force feedback; Friction; Guidelines; Limit-cycles; Nonlinear dynamical systems; Parameter estimation; Permanent magnet motors; Relays;
Conference_Titel :
Control, Automation, Robotics and Vision, 2008. ICARCV 2008. 10th International Conference on
Conference_Location :
Hanoi
Print_ISBN :
978-1-4244-2286-9
Electronic_ISBN :
978-1-4244-2287-6
DOI :
10.1109/ICARCV.2008.4795840
