Abstract
To reduce the influence of the static unbalance on an infrared missile
guidance system, a new static unbalance measure system for the gimbals
axes has been developed. Considering the coupling effects caused by a mass
eccentricity, the static balance condition and measure sequence for each
gimbal axis are obtained. A novel static unbalance test approach is
proposed after analyzing the dynamic model of the measured gimbal axis.
This approach is to drive the measured gimbal axis to do sinusoidal
reciprocating motion in a small angle and collect its drive currents in
real time. Then the static unbalance of the measured gimbal axis can be
obtained by the current multi-cycle integration. Also a measuring system
using the proposed approach has been developed. A balanced simulator is
used to verify the proposed approach by the load and repeatability tests.
The results show the proposed approach enhances the efficiency of the
static unbalance measurement, and the developed measuring system is able
to achieve a high precision with a greater stability.
Go to article