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Modeling and analysis of steady-state vibration induced by backlash in servo rotary table |
Xiao YANG,Dun LU,Sanli LIU,Jun ZHANG,Wanhua ZHAO( ) |
| State Key Laboratory for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an 710049, China |
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Abstract Backlash cannot be always avoided in mechanical systems because of wear or looseness. Steady-state vibration may be induced by backlash in closed loop feed drive systems. This paper presents a mathematical model of a servo rotary table, considering the effect of backlash. The accuracy of this model is verified by an experiment. The influences of the parameters, such as position controller gain, velocity controller gain, load and the magnitude of backlash, on steady-state vibration are discussed. The steady-state vibration amplitude increases with the position controller gain, load and the magnitude of backlash. The steady-state vibration frequency increases with the position controller gain and the velocity controller gain, while an increase in load leads to a decrease in the frequency.
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| Keywords
backlash
servo rotary table
steady-state vibration
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Corresponding Author(s):
Wanhua ZHAO
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Online First Date: 12 February 2015
Issue Date: 01 April 2015
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