Servomechanisms (servo actuators, or servos) find application in many fields of human activity: industrial and agricultural machines and equipment, military, and aerospace technologies. Thousands of engineers and specialists design, manufacture, research, and use servos of various structures, parameters, and functions. Servomechanisms are terminal, functional elements in automatic control systems with very high coefficients of signal power amplification. Servomechanisms, again, are theprincipal source of different non-linear relations in motion equations, complicating drastically the...