In the experiment, the method of determination of impulse scale factor of visual instrument and the effect of measuring the time parameters with visual instrument are studied.

While impulse forces not acting on the centroid, the influence of accessional attack Angle oscillation amplitude, impulse force scale and function time interval on range correction was discussed.

For optimal model - reduction of large scale systems, up to now, the integral-square - error method has been developed for systems with impulse, power or sine function inputs only.