Modification of the Localization Method for Suppressing Disturbances in Automation Systems

Zhmud Vadim
The localization method is used to control non-stationary linear objects. The mathematical model of the object is given by a transfer function with varying coefficients. This method was developed and studied in an analytical form. The advantage of this method is the effective suppression of the effect of changes in the coefficients of the object model on the stability and accuracy of the system. This is confirmed by the proved theorems for the differential equations describing the response of
more » ... g the response of the system to the prescription change. These advantages are not applicable when control has the goal to suppress disturbance. However, this task is the most important one in automatic control practice. In addition, the system by this method has a static error. This follows from the structure of the regulator. In all practical problems, the provision of zero static control error is necessary. This requirement is more important than requiring of a small dynamic error. There are many publications devoted to the localization method and its application, but the provision of zero static error in them is hardly discussed. The present paper is devoted to the investigation of providing a zero static error, an external loop method with an integrator is proposed. The proposed solution to guarantee the reliability of the result and for the sake of clarity is illustrated by the solution of a numerical example. The solution is implemented using the software for mathematical modeling VisSim.