Tehnički vjesnik, Vol. 27 No. 6, 2020.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20191220133754
Multi-Position Identification of Joint Parameters in Ball Screw Feed System Based on Response Coupling
Fengqing Tian
; School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Jianmin Zhu*
; School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Xiaoru Li
; School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Zhiwen Huang
; School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Sažetak
Existing methods of parameters identification do not consider the torsion characteristics of a ball screw and the worktable position simultaneously. Therefore, this paper proposes a multi-position identification method based on receptance coupling. Firstly, the mathematical model of the feed drive system is established by the improved receptance coupling, and this model considers both axial and torsional vibration of the ball screw. Secondly, the identification equation is established by minimum error of the modal parameters of multiple worktable position, and differential evolution algorithm is used to calculate the stiffness and damping of the joint. Finally, the self-developed ball screw feed drive system is used for experimental study. The maximum error of the first four orders of natural frequencies predicted through multi-position identification results is 2.95%, and the multi-position method is more robust than the common method identification at one position. The experiment study showed that the proposed method is accuracy and necessity.
Ključne riječi
ball screw feed drive system; Frequency Response Function (FRF); Identification of joint parameters; position-dependent dynamics; receptance coupling method
Hrčak ID:
248131
URI
Datum izdavanja:
19.12.2020.
Posjeta: 1.995 *