Optimization of the Linear Periodically Time-Varying Circuits in the MATLAB Environment

The paper presents the results of applying two optimization functions «patternsearch» and «fmincon» of the MATLAB environment to optimization a single-circuit parametric amplifier. The optimization results showed that the «fmincon» function gave the wrong minimum value, and the «patternsearch» function solved the problem correctly. A similar conclusion was obtained by the developers of MATLAB on their problem. Therefore, in order to obtain adequate results, it is proposed to solve the optimization problem for different starting points and, if necessary, different optimization functions. The objective function is formed on the basis of the symbolic transfer function of the linear periodically time-varying circuit, obtained by the frequency symbol method in the system UDF MAOPCs. Computer experiments performed are described in detail.