Control object research and model obtaining for the ALC system design

Abstract: We present a method for constructing models of microwave frequency synthesizer tract for a fixed frequency as a control object for the purpose of further AGC development. Static and dynamic characteristics of the control object were studied. To determine the coefficients of static characteristics of transmission controlled attenuator we used two ranges of values of the control action for three frequencies: 5, 6 and 7 GHz. For the dynamic characteristics of the control object we defined order and coefficients of the equations describing the dependence of the output power from the input power and the control action applied to the attenuator, and the dependence of the output voltage from the detector output. The results of comparative analysis of the model and the real object are given. The developed model corresponds to the real object.

Keywords: controlled attenuator, approximation of the nonlinear characteristic, nonlinear control object, static characteristics, dynamic properties, parametric feedback, model development