The dynamic performance is a key factor that influences the dynamic accuracy of a feed axis servo system. The mechanism of dynamic errors with the electro-mechanical and rigid-flexible coupling characteristics has not been revealed. It leads to a blind region for the research on the dynamic optimal design and dynamic errors suppression of a feed axis servo system. Considering the concentrated and distributed flexibility of the structure, the dynamic model of a feed axis servo system is established based on the electro-mechanical and rigid-flexible coupling characteristics. According to analyzing the response of the dynamic model to step and sine signals in simulation, how the dynamic errors are produced is discussed and the influence of important factors on the dynamic errors is analyzed. The proposed dynamic model can systematically illustrated the formation of dynamic error, which lays a theoretical foundation for the dynamic optimal design and dynamic error suppression of the feed axis servo system.
LI Jie
,
XIE Fugui
,
LIU Xinjun
,
LIU Dawei
,
LI Fuhua
,
JIANG Zhong
. Dynamic Modeling of a Linear Feed Axis Considering the Characteristics of the Electro-mechanical and Rigid-flexible Coupling[J]. Journal of Mechanical Engineering, 2017
, 53(17)
: 60
-69
.
DOI: 10.3901/JME.2017.17.060
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